Pay-off device for transformer
By designing a transformer wire feeder with adaptive inner diameter adjustment and anti-loosening device, the problem of insufficient adaptability and stability of traditional wire feeders in the production of small electronic transformers has been solved, achieving an efficient and stable wire feeder process and improving product quality.
Patent Information
- Application Number
- CN202512044851.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-31
- Publication Date
- 2026-02-13
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Existing traditional wire feeders suffer from poor adaptability, insufficient stability, and lack of anti-loosening and anti-knotting functions in the production of small electronic transformers, resulting in low production efficiency and unstable product quality.
A transformer coil feeder was designed, which includes an inner diameter adaptive adjustment, reliable fixing and anti-loosening device. Through the synergistic action of a large torsion spring, a triangular block and a triangular slot, it can achieve precise fitting and stable fixing of bare copper coils with different inner diameters, preventing shaking and loosening. The combination structure of an L-shaped tensioning rod and an arc-shaped outer wrapping rod is used to prevent the coil from tangling and knotting.
It enables flexible adaptation to bare copper coils with different inner diameters, prevents shaking and loosening during the wire feeding process, ensures the stability and continuity of wire feeding, and improves production efficiency and product quality.
Smart Images
Figure CN121528751A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of transformer manufacturing technology, specifically to a wire feeder for transformers. Background Technology
[0002] In the manufacturing process of small electronic transformers, the unwinding of bare copper coils is one of the key steps. As a core auxiliary equipment, the performance of the unwinding device directly affects the stability of the unwinding process, production efficiency, and the quality of the final product. Currently, although the traditional unwinding devices widely used in the industry can meet basic unwinding requirements, in actual application scenarios, due to the special characteristics of small electronic transformer production, many undeniable defects have gradually been exposed, seriously restricting the smoothness of the production process and the improvement of product quality.
[0003] First, the linkage structure of traditional wire feeders lacks adaptive adjustment functionality for the inner diameter of the bare copper coil. Small electronic transformers come in various specifications, resulting in diverse inner diameters of the corresponding bare copper coils. Existing wire feeders typically have fixed linkage dimensions, making flexible adjustment impossible for different inner diameters of bare copper coils. This often means a single wire feeder can only accommodate a single coil specification. During production, changing to different coil specifications requires disassembling and replacing the corresponding linkage components, increasing equipment setup time, raising production support costs, frequently interrupting the production process, and significantly reducing overall production efficiency.
[0004] Secondly, traditional wire feeders are installed by placing them directly on top of the base, lacking a reliable fixing and positioning structure. During the wire feeding process, the bare copper coil drives the wire feeder to rotate synchronously. Under the influence of rotational force, especially when the coil weight distribution is uneven or the wire feeding speed fluctuates, the wire feeder is prone to shaking. Without an effective limiting and fixing mechanism, this shaking gradually intensifies, potentially causing the entire wire feeder to tip over. This problem not only compromises the stability of the wire feeding, causing copper wire deformation or surface damage, but may also lead to equipment collision malfunctions, posing a potential threat to the personal safety of operators.
[0005] Finally, during the winding process, as the number of turns of the bare copper coil gradually decreases, the coil tension continuously weakens, leading to loosening of the remaining coil. Loose bare copper coils are prone to tangling and stacking during subsequent winding, resulting in knots. Once knots appear, production must be halted for manual straightening, severely impacting production continuity. Simultaneously, the knotted copper wires may undergo plastic deformation or even break due to stretching, resulting in material waste. Furthermore, loose or knotted copper wires cannot maintain a regular arrangement during winding operations, directly affecting the accuracy of the small electronic transformer windings, leading to unstable electrical performance and reduced product yield.
[0006] In summary, the shortcomings of existing traditional wire feeders in terms of adaptability, stability, and anti-loosening and anti-knotting capabilities can no longer meet the high-efficiency and high-precision production requirements of small electronic transformers. Therefore, we propose a transformer wire feeder with adaptive inner diameter adjustment, reliable fixing, and anti-loosening and anti-knotting functions. Summary of the Invention
[0007] To address the shortcomings of existing technologies, this invention provides a wire feeder for transformers, which solves the problems mentioned in the background section.
[0008] To achieve the above objectives, the present invention provides the following technical solution: a transformer wire feeder, comprising a base, a placement hole on the top surface of the base, a guide rod fixedly mounted on the outer side of the top of the base, a guide wheel rotatably mounted on the top of the guide rod, an inner diameter adaptation device on the top of the base, a fixing device on the top of the base near the inner diameter adaptation device, an anti-loosening device between the inner diameter adaptation device and the fixing device, the inner diameter adaptation device comprising a placement seat, the placement seat being disposed on the top of the base, and a cylindrical hole being opened at the bottom of the placement seat, a foot fixedly mounted at the bottom of the placement seat, the foot being near the circular... The outer wall of the heart has a cylindrical slot, the top of the placement seat has an arc-shaped slide, the top center of the placement seat has a rotating column that is rotatably mounted through it, the top of the rotating column has an octagonal slot, and the bottom of the octagonal slot has a cylindrical through hole, the bottom of the rotating column has a turntable fixedly mounted, the bottom of the turntable has a through cavity, the outer wall of the turntable has a limit push rod fixedly mounted, the inner wall of the arc-shaped slide has an adapting rod slidably mounted, the bottom outer wall of the adapting rod near the bottom of the arc-shaped slide has a limit block one fixedly mounted, the top of the adapting rod has a limit block two fixedly mounted, and the top outer wall of the adapting rod near the limit block two has a nut threadedly connected.
[0009] According to the above technical solution, the inner diameter adaptation device further includes a housing, a slot, a large torsion spring, an arc-shaped slide groove, a rotating rod, a positioning plate, and a triangular locking block. The housing is fixedly installed on the top of the center end of the placement seat. The slot is opened on the outer wall of the top of the housing. The large torsion spring is disposed between the housing and the rotating column. The arc-shaped slide groove is opened on the top of the housing. The rotating rod is fixedly installed on the top of the turntable near the arc-shaped slide groove. The positioning plate is fixedly installed on the outer wall of the rotating column near the top of the housing. The triangular locking block is fixedly installed on the bottom of both ends of the positioning plate.
[0010] Further, according to the above technical solution, the radian of the included angle between both ends of the arc-shaped slideway and the center of the circle is equal to the radian of the included angle between both ends of the arc-shaped chute and the center of the circle. Two of the limiting push rods are in a group, and the limiting push rods in each group are arranged parallel to each other. The number of the adapting rods corresponds to the number of the limiting push rods in each group. The triangular clamping block is located on the clamping track of the triangular clamping groove. The rotating rod is slidably installed on the inner wall of the arc-shaped chute.
[0011] According to the above technical solution, the fixing device includes a top plate, which is arranged between the second limiting block and the nut. The central end of the top plate is fixedly installed with a mounting plate. The bottom of the mounting plate is fixedly installed with a motor. The output end of the motor is fixedly installed with a rotating seat. The top of the rotating seat is fixedly installed with a connecting block. The outer wall of the connecting block penetrates and is fixedly installed with an L-shaped tensioning rod. The bottom of the motor is fixedly installed with an octagonal clamping block.
[0012] According to the above technical solution, the fixing device further includes a first pressing plate, a first spring, a long rod, a second pressing plate, a pressing column, a sliding cavity, a cone, a sliding plate, a second spring, a middle-shaped through groove, a resisting clamping rod, a reset plate and a third spring. The first pressing plate is slidably installed on the inner wall of the cylindrical through hole of the rotating column. The first spring is arranged between the bottom surface of the first pressing plate and the inner wall of the cylindrical through hole of the rotating column. The long rod is fixedly installed at the bottom of the first pressing plate. The second pressing plate is fixedly installed at the bottom of the long rod. The pressing column is fixedly installed at the bottom of the second pressing plate. The sliding cavity is opened on the inner wall of the cylindrical hole of the placing seat. The cone is slidably installed on the inner wall of the cylindrical hole of the placing seat. The sliding plate is fixedly installed on the outer wall of the cone close to the sliding cavity. The second spring is arranged between the sliding plate and the sliding cavity. The middle-shaped through groove is opened on the inner wall of the base close to the cylindrical hole of the placing seat. The resisting clamping rod is slidably installed on the inner wall of the middle-shaped through groove. The reset plate is fixedly installed on the outer wall of the central end of the resisting clamping rod. The second spring is arranged between the surface of the reset plate close to the foot and the middle-shaped through groove.
[0013] Further, according to the above technical solution, a second guiding wheel is fixedly installed at the top of the connecting block. A tensioning wheel is arranged at one end of the L-shaped tensioning rod perpendicular to the base. The second pressing plate is slidably installed on the inner wall of the through cavity of the turntable. The cone is placed in an inverted conical shape. One end of the resisting clamping rod in contact with the inclined surface of the cone is provided with an arc chamfer, and the resisting clamping rod is located on the movement track of the inclined surface of the cone. The resisting clamping rod is located on the clamping track of the cylindrical clamping groove of the foot.
[0014] According to the above technical solution, the anti-loosening device includes a rotating roller, a sliding cavity, a slide rod, a placement rod, a spring, a mounting frame, a rotating shaft, a small torsion spring, an arc-shaped outer rod, and a contact plate. The rotating roller is rotatably mounted on the outer wall of the adaptation rod. The sliding cavity is opened inside the adaptation rod. The slide rod is slidably mounted on the inner wall of the sliding cavity. The placement rod is vertically and fixedly mounted on the outer wall of the slide rod. The spring is disposed between the placement rod and the sliding cavity. The mounting frame is fixedly mounted on the top outer wall of the slide rod. The rotating shaft is fixedly mounted on the inner wall of the mounting frame. The arc-shaped outer rod is rotatably mounted on the outer wall of the rotating shaft. The small torsion spring is disposed between the arc-shaped outer rod and the rotating shaft. The contact plate is fixedly mounted on the end of the L-shaped tensioning rod away from the tensioning wheel.
[0015] Furthermore, according to the above technical solution, the top end of the slide rod is designed in an arc shape, the small torsion spring drives the arc-shaped outer rod to rotate downward, the contact plate is inclined, and the inclined surface of the contact plate is located on the movement trajectory of the top end of the slide rod.
[0016] This invention provides a wire feeder for transformers. It has the following advantages:
[0017] (1) Through the synergistic effect of the large torsion spring, the triangular block and the triangular slot, the present invention can automatically release the torque limitation and provide continuous thrust when the coil becomes loose and the inner diameter expands during the subsequent wire feeding process. This drives the adaptation rod to slide outward synchronously and always maintains a precise fit with the inner diameter of the coil. This avoids problems such as wire feeding deviation and jamming caused by adaptation deviation, and ensures the smoothness and stability of the bare copper coil wire feeding process. This provides reliable support for the efficient production of small electronic transformers.
[0018] (2) The present invention enables quick and easy installation through a base, a placement seat, and a fixing device. The placement seat is firmly fixed to the base, effectively preventing shaking or tipping caused by the rotational force of the coil during the wire feeding process. Compared with the traditional wire feeder which is placed directly on top of the base and lacks an effective fixing mechanism, the fixing device provided by this wire feeder significantly improves the stability of the wire feeding process, ensuring production safety and coil quality.
[0019] (3) This invention uses a small torsion spring to apply downward rotational torque to the arc-shaped outer wrapping rod to wrap the coil downwards. The arc-shaped outer wrapping rod can tightly wrap the outer wall of the bare copper coil, forming an effective constraint from the outside, avoiding the situation of loose structure and copper wire stacking due to the reduction of the number of turns of the coil. At the same time, when the L-shaped tensioning rod drives the inclined contact plate to rotate counterclockwise, it will continuously contact the arc surface at the top of the sliding rod and drive it to move downwards. After the contact plate passes the sliding rod, the sliding rod will be reset upwards under the action of the spring, thereby driving the placement rod to achieve up and down reciprocating motion. Combined with the wrapping effect of the arc-shaped outer wrapping rod, a double regularization effect is formed on the coil from both the inside and outside, always maintaining the compact state and stable tension of the coil, effectively preventing the copper wire from tangling and knotting, ensuring the continuity and smoothness of the wire release process, avoiding the waste of raw materials and the decrease in transformer winding accuracy caused by loose copper wire and knotting, and further improving the production quality and efficiency of small electronic transformers. Attached Figure Description
[0020] Figure 1 This is a front view schematic diagram of the overall structure of the present invention;
[0021] Figure 2 This is a bottom view of the overall structure of the present invention;
[0022] Figure 3 This is a cross-sectional schematic diagram of the overall structure of the present invention;
[0023] Figure 4 This is a cross-sectional schematic diagram of the inner diameter adaptation device of the present invention;
[0024] Figure 5 This is a partial schematic diagram of the inner diameter adaptation device of the present invention;
[0025] Figure 6 This is a cross-sectional schematic diagram of the fixing device of the present invention;
[0026] Figure 7 This is an enlarged schematic diagram of point A in the present invention;
[0027] Figure 8 This is a cross-sectional schematic diagram of the anti-loosening device of the present invention;
[0028] Figure 9 This is an enlarged schematic diagram of point B in the present invention.
[0029] In the diagram: 1. Base; 2. Guide rod; 3. Guide wheel one; 4. Inner diameter adaptation device; 41. Placement seat; 4101. Stand; 42. Arc-shaped slide; 43. Rotating column; 4301. Octagonal slot; 44. Turntable; 45. Limiting push rod; 46. Adapting rod; 47. Limiting block one; 48. Limiting block two; 49. Nut; 410. Outer shell; 411. Triangular slot; 412. Large torsion spring; 413. Arc-shaped slide; 414. Rotating rod; 415. Corresponding plate; 416. Triangular block; 5. Fixing device; 51. Top plate; 52. Mounting plate; 53. Motor; 54. Rotating seat; 55. Connecting block; 56. L-shaped tensioning rod; 57. Octagonal locking block; 58. Pressure plate one; 59. Spring one; 510. Long rod; 511. Pressure plate two; 512. Pressure column; 513. Sliding cavity; 514. Cone; 515. Sliding plate; 516. Spring two; 517. T-shaped through slot; 518. Abutting locking rod; 519. Reset plate; 520. Spring three; 6. Anti-loosening device; 61. Rotating roller; 62. Sliding cavity; 63. Sliding rod; 64. Placement rod; 65. Spring four; 66. Mounting frame; 67. Rotating shaft; 68. Small torsion spring; 69. Arc-shaped outer wrapping rod; 610. Abutting plate. Detailed Implementation
[0030] 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.
[0031] Please see Figures 1-5One embodiment of the present invention is as follows: a transformer wire feeder includes a base 1, a placement hole on the top surface of the base 1, a guide rod 2 fixedly installed on the outer side of the top of the base 1, a guide wheel 3 rotatably installed on the top of the guide rod 2, an inner diameter adaptation device 4 on the top of the base 1, a fixing device 5 on the top of the base 1 near the inner diameter adaptation device 4, an anti-loosening device 6 between the inner diameter adaptation device 4 and the fixing device 5, the inner diameter adaptation device 4 includes a placement seat 41, the placement seat 41 is disposed on the top of the base 1, and a cylindrical hole is opened at the bottom of the placement seat 41. A foot 4101 is fixedly installed at the bottom of the placement seat 41, and a cylindrical slot is opened on the outer wall of the foot 4101 near the center. The top of the seat 41 is provided with an arc-shaped slide rail 42. A rotating column 43 is rotatably installed through the center of the top of the seat 41. An octagonal slot 4301 is provided at the top of the rotating column 43, and a cylindrical through hole is provided at the bottom of the octagonal slot 4301. A turntable 44 is fixedly installed at the bottom of the rotating column 43. A through cavity is provided at the bottom of the turntable 44. A limit push rod 45 is fixedly installed on the outer wall of the turntable 44. An adapting rod 46 is slidably installed on the inner wall of the arc-shaped slide rail 42. A limit block 47 is fixedly installed on the outer wall of the bottom end of the adapting rod 46 near the bottom of the arc-shaped slide rail 42. A limit block 48 is fixedly installed on the top end of the adapting rod 46 near the top end of the limit block 48. A nut 49 is threadedly connected to the outer wall of the adapting rod 46 near the top end of the limit block 48.
[0032] The inner diameter adaptation device 4 also includes a housing 410, a triangular groove 411, a large torsion spring 412, an arc-shaped slide 413, a rotating rod 414, a positioning plate 415, and a triangular block 416. The housing 410 is fixedly installed on the top of the center end of the placement seat 41. The triangular groove 411 is opened on the outer wall of the top of the housing 410. The large torsion spring 412 is disposed between the housing 410 and the rotating column 43. The arc-shaped slide 413 is opened on the top of the housing 410. The rotating rod 414 is fixedly installed on the top of the turntable 44 near the arc-shaped slide 413. The positioning plate 415 is fixedly installed on the outer wall of the rotating column 43 near the top of the housing 410. The triangular block 416 is fixedly installed on the bottom of both ends of the positioning plate 415.
[0033] The arc angle between the two ends of the arc slide 42 and the center is equal to the arc angle between the two ends of the arc groove 413 and the center. The limiting push rods 45 are set in pairs, and each set of limiting push rods 45 is set parallel to each other. The number of adapting rods 46 corresponds to the number of limiting push rods 45 in each set. The triangular block 416 is located on the engagement trajectory of the triangular slot 411. The rotating rod 414 is slidably installed on the inner wall of the arc groove 413.
[0034] In a small electronic transformer manufacturing workshop, user A needs to lay out bare copper coils of different inner diameters. In this embodiment, the bare copper coil is first placed on the top of the placement base 41 near the outer wall of the adapting rod 46. The rotating column 43 is rotated clockwise, causing the turntable 44 to rotate clockwise. The turntable 44 then causes the limiting push rod 45 to rotate clockwise, clamping the adapting rod 46 between their inner walls. This rotation of the limiting push rod 45 simultaneously causes the adapting rod 46 to slide outwards along the inner wall of the arc-shaped slide rail 42. The bare copper coils of different inner diameters expand outwards through the adapting rod 46, thus accommodating bare copper coils of different inner diameters.
[0035] As subsequent wire feeding continues, the coil may become loose, causing its inner diameter to continue to expand. To further improve the accuracy and stability of the inner diameter adaptation, after the triangular locking block 416 is removed from the inner wall of the triangular locking slot 411, the large torsion spring 412 releases the torque restriction on the rotating column 43. This allows the rotating column 43 to be driven by the torque of the large torsion spring 412 to rotate the turntable 44 clockwise. The turntable 44 then drives the rotating rod 414 to slide clockwise along the inner wall of the arc-shaped groove 413. During subsequent wire feeding, the continuous expansion of the inner diameter causes the large torsion spring 412 to drive the rotating column 43 to rotate clockwise. The rotating column 43 then drives the turntable 44 to rotate clockwise, which in turn drives the limiting push rod 45 to rotate clockwise. The limiting push rod 45 continuously provides outward thrust to the adapting rod 46. Through the coordinated action of the large torsion spring 412, the triangular locking block 416 and the triangular locking groove 411, when the coil becomes loose and the inner diameter expands during the subsequent wire feeding process, the torque limitation can be automatically released and a continuous thrust can be provided to drive the adaptation rod 46 to slide outward synchronously, always maintaining a precise fit with the inner diameter of the coil. This avoids problems such as wire feeding deviation and jamming caused by adaptation deviation, ensuring the smoothness and stability of the bare copper coil wire feeding process, and providing reliable support for the efficient production of small electronic transformers.
[0036] Please see Figures 6-7 Based on the above embodiments, in another embodiment of the present invention, the fixing device 5 includes a top plate 51, which is disposed between the limiting block 48 and the nut 49. A mounting plate 52 is fixedly installed at the center end of the top plate 51, a motor 53 is fixedly installed at the bottom of the mounting plate 52, a rotating seat 54 is fixedly installed at the output end of the motor 53, a connecting block 55 is fixedly installed at the top of the rotating seat 54, an L-shaped tensioning rod 56 is fixedly installed through the outer wall of the connecting block 55, and an octagonal locking block 57 is fixedly installed at the bottom of the motor 53.
[0037] The fixing device 5 also includes a pressure plate 58, a spring 59, a long rod 510, a pressure plate 511, a pressure column 512, a sliding cavity 513, a cone 514, a sliding plate 515, a spring 516, a U-shaped through slot 517, a contact lever 518, a reset plate 519, and a spring 520. The pressure plate 58 is slidably installed on the inner wall of the cylindrical through hole of the rotating column 43. The spring 59 is disposed between the bottom surface of the pressure plate 58 and the inner wall of the cylindrical through hole of the rotating column 43. The long rod 510 is fixedly installed on the bottom of the pressure plate 58, the pressure plate 511 is fixedly installed on the bottom of the long rod 510, and the pressure column 512 is fixedly installed on the bottom of the pressure plate 511. The sliding cavity 513 is opened on the inner wall of the cylindrical hole of the placement seat 41. The cone 514 is slidably installed on the inner wall of the cylindrical hole of the placement seat 41. The sliding plate 515 is fixedly installed on the outer wall of the cone 514 near the sliding cavity 513. The second spring 516 is disposed between the sliding plate 515 and the sliding cavity 513. The Chinese character-shaped through groove 517 is opened on the inner wall of the base 1 near the cylindrical hole of the placement seat 41. The abutment rod 518 is slidably installed on the inner wall of the Chinese character-shaped through groove 517. The reset plate 519 is fixedly installed on the outer wall of the center end of the abutment rod 518. The second spring 516 is disposed between the side of the reset plate 519 near the upright foot 4101 and the Chinese character-shaped through groove 517.
[0038] A guide wheel is fixedly installed on the top of the connecting block 55. A tensioning wheel is set at one end of the L-shaped tensioning rod 56 perpendicular to the base 1. The pressure plate 511 is slidably installed on the inner wall of the through cavity of the turntable 44. The cone 514 is placed in an inverted cone shape. The end of the contact rod 518 that contacts the inclined surface of the cone 514 is set with a rounded chamfer. The contact rod 518 is located on the movement trajectory of the inclined surface of the cone 514. The contact rod 518 is located on the engagement trajectory of the cylindrical slot of the foot 4101.
[0039] After the inner diameter of the coil is adjusted, the starting end of the coil is wound through the tension wheel on the L-shaped tensioning rod 56 to the guide wheel 2 at the top of the connecting block 55, then through the guide wheel 2 to the guide wheel 3 on the guide rod 2, and finally out through the guide wheel 3. The output end of the motor 53 drives the rotating seat 54 to rotate, the rotating seat 54 drives the connecting block 55 to rotate, and the connecting block 55 drives the tension wheel on the L-shaped tensioning rod 56 to rotate. The tension wheel provides tension force, pulling the copper wire upward.
[0040] To prevent the wire feeder from shaking or tipping over during the wire feeding process, in this embodiment, the top plate 51 is placed on top of the limiting block 48. The nut 49 is installed on the top surface of the top plate 51 but not fixed; it only limits the movement of the top plate 51. Simultaneously, the octagonal locking block 57 at the bottom of the motor 53 engages with the octagonal slot 4301 of the rotating column 43. The octagonal locking block 57 pushes the pressure plate 58 downwards, which in turn moves the long rod 510 downwards. The long rod 510 then moves the pressure plate 511 downwards, which in turn moves the pressure column 512 downwards. The pressure column 512 pushes the cone 514 on the inner wall of the cylindrical hole of the placement seat 41 downwards, with the bottom inclined surface of the cone 514 abutting against... The rounded chamfered end of the contact lever 518 allows it to slide along the inner wall of the U-shaped through slot 517 towards the upright foot 4101. The contact lever 518 then inserts into the cylindrical slot of the upright foot 4101, thus completing the rapid and secure installation of the base 1, the placement seat 41, and the fixing device 5. Springs 59, 516, and 520 provide a reset effect for the pressure plate 58, the sliding plate 515, and the reset plate 519, respectively. Through the rapid and secure installation of the base 1, the placement seat 41, and the fixing device 5, the placement seat 41 is firmly fixed to the base 1, effectively preventing shaking or tipping caused by coil rotation during the wire feeding process. Compared to traditional wire feeders that are directly placed on top of the base 1 and lack an effective fixing mechanism, the fixing device 5 provided by this wire feeder significantly improves the stability of the wire feeding process, ensuring production safety and coil quality.
[0041] Please see Figures 8-9 Based on the above embodiments, in another embodiment of the present invention, the anti-loosening device 6 includes a rotating roller 61, a sliding cavity 62, a slide rod 63, a placement rod 64, a spring 65, a mounting frame 66, a rotating shaft 67, a small torsion spring 68, an arc-shaped outer rod 69, and a contact plate 610. The rotating roller 61 is rotatably mounted on the outer wall of the adaptation rod 46. The sliding cavity 62 is opened inside the adaptation rod 46. The slide rod 63 is slidably mounted on the inner wall of the sliding cavity 62. The placement rod 64 is vertically and fixedly mounted on the outer wall of the slide rod 63. The spring 65 is disposed between the placement rod 64 and the sliding cavity 62. The mounting frame 66 is fixedly mounted on the top outer wall of the slide rod 63. The rotating shaft 67 is fixedly mounted on the inner wall of the mounting frame 66. The arc-shaped outer rod 69 is rotatably mounted on the outer wall of the rotating shaft 67. The small torsion spring 68 is disposed between the arc-shaped outer rod 69 and the rotating shaft 67. The contact plate 610 is fixedly mounted on the end of the L-shaped tensioning rod 56 away from the tensioning wheel.
[0042] The top of the slide bar 63 is designed with an arc shape. The small torsion spring 68 drives the arc-shaped outer rod 69 to rotate downward. The contact plate 610 is set at an angle, and the inclined surface of the contact plate 610 is located on the movement trajectory of the top of the slide bar 63.
[0043] During the coil laying process, as the number of turns in the bare copper coil gradually decreases, the coil tension weakens, making it prone to loosening. In this embodiment, the coil is placed on top of the placement rod 64. The arc-shaped outer wrapping rod 69, through a small torsion spring 68 between itself and the rotating shaft 67, experiences a downward rotational torque, wrapping the outer wall of the bare copper coil inward to prevent it from becoming too loose due to the reduction in the number of turns. The L-shaped tensioning rod 56 drives the contact plate 610 to rotate counterclockwise. The contact plate 610 abuts against the arc surface at the top of the slide rod 63, causing the slide rod 63 to move downward, which in turn moves the placement rod 64 downward. When the contact plate 610 passes one of the slide rods 63, the slide rod 63 at that point is reset upward by the spring 65 at its bottom. By using a small torsion spring 68 to impart downward rotational torque to the arc-shaped outer wrapping rod 69, the coil is wrapped downwards. The arc-shaped outer wrapping rod 69 can tightly wrap the outer wall of the bare copper coil, forming an effective constraint from the outside, preventing the coil from becoming loose and the copper wire from stacking due to the reduction in the number of turns. At the same time, when the L-shaped tensioning rod 56 drives the inclined contact plate 610 to rotate counterclockwise, it will continuously contact the arc surface at the top of the slide rod 63 and drive it to move downwards. After the contact plate 610 passes the slide rod 63, the slide rod 63 returns to its original position under the action of the spring 65, thereby driving the placement rod 64 to achieve up and down reciprocating motion. Combined with the wrapping effect of the arc-shaped outer wrapping rod 69, a double regularization effect is formed on the coil from both the inside and outside, always maintaining the coil's compact state and stable tension, effectively preventing the copper wire from tangling and knotting, ensuring the continuity and smoothness of the wire feeding process, avoiding the waste of raw materials and the decrease in transformer winding accuracy caused by loose and knotted copper wires, and further improving the production quality and efficiency of small electronic transformers.
[0044] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A transformer wire feeder, comprising a base (1), wherein a placement hole is provided on the top surface of the base (1), a guide rod (2) is fixedly installed on the outer side of the top of the base (1), and a guide wheel (3) is rotatably installed on the top end of the guide rod (2), characterized in that: The base (1) is provided with an inner diameter adaptation device (4) at its top. The base (1) is provided with a fixing device (5) near the top of the inner diameter adaptation device (4). An anti-loosening device (6) is provided between the inner diameter adaptation device (4) and the fixing device (5). The inner diameter adaptation device (4) includes a placement seat (41). The placement seat (41) is located at the top of the base (1). A cylindrical hole is provided at the bottom of the placement seat (41). A foot (4101) is fixedly installed at the bottom of the placement seat (41). A cylindrical slot is provided on the outer wall of the foot (4101) near the center. An arc-shaped slide (42) is provided at the top of the placement seat (41). A rotating column is rotatably installed through the center end of the top of the placement seat (41). 43) An octagonal slot (4301) is provided at the top of the rotating column (43), and a cylindrical through hole is provided at the bottom of the octagonal slot (4301). A turntable (44) is fixedly installed at the bottom of the rotating column (43). A through cavity is provided at the bottom of the turntable (44). A limit push rod (45) is fixedly installed on the outer wall of the turntable (44). An adapting rod (46) is slidably installed on the inner wall of the arc-shaped slide (42). A limit block one (47) is fixedly installed on the outer wall of the bottom end of the adapting rod (46) near the bottom of the arc-shaped slide (42). A limit block two (48) is fixedly installed on the top end of the adapting rod (46). A nut (49) is threadedly connected to the outer wall of the top end of the adapting rod (46) near the limit block two (48).
2. The transformer wire feeder according to claim 1, characterized in that: The inner diameter adaptation device (4) further includes a housing (410), a slot (411), a large torsion spring (412), an arc-shaped slide groove (413), a rotating rod (414), a co-positioning plate (415), and a triangular locking block (416). The housing (410) is fixedly installed at the top of the center end of the placement seat (41). The slot (411) is opened on the top outer wall of the housing (410). The large torsion spring (412) is arranged between the housing (410) and the rotating column (43). The arc-shaped slide groove (413) is opened on the top of the housing (410). The rotating rod (414) is fixedly installed on the top of the turntable (44) near the arc-shaped slide groove (413). The co-positioning plate (415) is fixedly installed on the outer wall of the rotating column (43) near the top of the housing (410). The triangular locking block (416) is fixedly installed at the bottom of both ends of the co-positioning plate (415).
3. A wire feeder for a transformer according to claims 1 and 2, characterized in that: The arc angle between the two ends of the arc slide (42) and the center of the circle is equal to the arc angle between the two ends of the arc groove (413) and the center of the circle. The limiting push rods (45) are arranged in pairs, and each pair of limiting push rods (45) is arranged in parallel. The number of the adapting rods (46) corresponds to the number of each pair of limiting push rods (45). The triangular block (416) is located on the snapping trajectory of the triangular slot (411). The rotating rod (414) is slidably installed on the inner wall of the arc groove (413).
4. A wire feeder for a transformer according to claim 1, characterized in that: The fixing device (5) includes a top plate (51), which is disposed between the limiting block (48) and the nut (49). A mounting plate (52) is fixedly installed at the center end of the top plate (51). A motor (53) is fixedly installed at the bottom of the mounting plate (52). A rotating seat (54) is fixedly installed at the output end of the motor (53). A connecting block (55) is fixedly installed at the top of the rotating seat (54). An L-shaped tensioning rod (56) is fixedly installed through the outer wall of the connecting block (55). An octagonal locking block (57) is fixedly installed at the bottom of the motor (53).
5. A wire feeder for a transformer according to claim 4, characterized in that: The fixing device (5) also includes a pressure plate (58), a spring (59), a long rod (510), a pressure plate (511), a pressure column (512), a sliding cavity (513), a cone (514), a sliding plate (515), a spring (516), a U-shaped through slot (517), a contact lever (518), a reset plate (519), and a spring (520). The pressure plate (58) is slidably installed on the inner wall of the cylindrical through hole of the rotating column (43). The spring (59) is located between the bottom surface of the pressure plate (58) and the inner wall of the cylindrical through hole of the rotating column (43). The long rod (510) is fixedly installed on the bottom of the pressure plate (58). The pressure plate (511) is fixedly installed on the bottom of the long rod (510). The pressure column (512) is fixedly installed on the pressure plate (511). At the bottom, the sliding cavity (513) is opened on the inner wall of the cylindrical hole of the placement seat (41), the cone (514) is slidably installed on the inner wall of the cylindrical hole of the placement seat (41), the sliding plate (515) is fixedly installed on the outer wall of the cone (514) near the sliding cavity (513), the second spring (516) is arranged between the sliding plate (515) and the sliding cavity (513), the Chinese character-shaped through groove (517) is opened on the inner wall of the base (1) near the cylindrical hole of the placement seat (41), the abutting lever (518) is slidably installed on the inner wall of the Chinese character-shaped through groove (517), the reset plate (519) is fixedly installed on the outer wall of the center end of the abutting lever (518), and the second spring (516) is arranged between the side of the reset plate (519) near the upright foot (4101) and the Chinese character-shaped through groove (517).
6. A wire feeder for a transformer according to claims 4 and 5, characterized in that: The top of the connecting block (55) is fixedly installed with a guide wheel 2. The L-shaped tensioning rod (56) is provided with a tensioning wheel at one end perpendicular to the base (1). The pressure plate 2 (511) is slidably installed on the inner wall of the through cavity of the turntable (44). The cone (514) is placed in an inverted cone shape. The end of the contact rod (518) that contacts the inclined surface of the cone (514) is set with a rounded chamfer. The contact rod (518) is located on the movement trajectory of the inclined surface of the cone (514). The contact rod (518) is located on the snapping trajectory of the cylindrical slot of the foot (4101).
7. A wire feeder for a transformer according to claim 1, characterized in that: The anti-loosening device (6) includes a rotating roller (61), a sliding cavity (62), a sliding rod (63), a placement rod (64), a spring (65), a mounting frame (66), a rotating shaft (67), a small torsion spring (68), an arc-shaped outer rod (69), and a contact plate (610). The rotating roller (61) is rotatably mounted on the outer wall of the adapting rod (46). The sliding cavity (62) is opened inside the adapting rod (46). The sliding rod (63) is slidably mounted on the inner wall of the sliding cavity (62). The placement rod (64) is vertically and fixedly installed. On the outer wall of the slide rod (63), the spring four (65) is disposed between the placement rod (64) and the sliding cavity (62). The mounting frame (66) is fixedly installed on the top outer wall of the slide rod (63). The rotating shaft (67) is fixedly installed on the inner wall of the mounting frame (66). The arc-shaped outer wrapping rod (69) is rotatably installed on the outer wall of the rotating shaft (67). The small torsion spring (68) is disposed between the arc-shaped outer wrapping rod (69) and the rotating shaft (67). The abutment plate (610) is fixedly installed on the end of the L-shaped tensioning rod (56) away from the tensioning wheel.
8. A wire feeder for a transformer according to claim 7, characterized in that: The top of the slide bar (63) is designed in an arc shape. The small torsion spring (68) drives the arc-shaped outer rod (69) to rotate downward. The contact plate (610) is set at an angle, and the inclined surface of the contact plate (610) is located on the movement trajectory of the top of the slide bar (63).