Transformer coil winding device with stable wire feeding function

Abstract

The invention discloses a transformer coil winding device capable of stably feeding wires, and belongs to the technical field of winding devices. Comprising a frame body, a winding roller and a bobbin frame are rotationally arranged on the frame body, a wiring harness barrel is rotationally installed on the bobbin frame, and a copper wire is wound on the wiring harness barrel; the frame body is further provided with a wire guiding mechanism located between the winding roller and the wire harness barrel, the wire guiding mechanism comprises a sliding groove fixed to the frame body, and a sliding seat is arranged on the sliding groove in a sliding mode. The transformer coil winding device has the beneficial effects that by arranging the sliding groove and the sliding seat, when the winding roller rotates for winding, the sliding seat can move, a copper wire is guided through the sliding seat, meanwhile, the wire guiding speed of the sliding seat is adjusted according to the thickness size of the copper wire, and tight winding is guaranteed.

Description

A transformer coil winding device for stable wire feeding Technical Field

[0001] This application relates to the field of winding device technology, and more specifically, to a transformer coil winding device for stable wire feeding. Background Technology

[0002] In the transformer manufacturing process, winding is one of the core processes. The performance of the winding device directly determines the winding accuracy, electrical performance and production efficiency of the transformer coil. As the power industry continues to raise the quality requirements of transformers, traditional winding devices for transformer production have gradually revealed many technical defects in practical applications, making it difficult to meet the production needs of high precision and high efficiency.

[0003] For example, patent document CN118398377B discloses a coil winding device for a power transformer assembly, including a winding machine and a frame, as well as a support frame, a support side plate, a wire management mechanism disposed on the support side plate, a winding mechanism disposed on the support frame, and a dispensing unit. The wire management mechanism includes a reciprocating lateral output end and a lateral moving seat for driving the wire movement. In this device, the copper wire is guided by the reciprocating lateral moving seat, resulting in uniform winding of the copper wire. However, different models and types of copper wires have different thicknesses. Therefore, to ensure uniform and tight winding of the copper wire during winding, the winding position of the copper wire needs to be adjusted while winding one turn, so that the winding position moves by the diameter of the copper wire, which facilitates tight winding of the copper wire coil. Therefore, the adjustment speed of the copper wire winding position needs to be matched with the winding speed and the thickness of the copper wire. However, the aforementioned lateral moving seat cannot adjust the movement speed of the copper wire winding position according to different copper wires during reciprocating movement, and cannot guarantee uniform and tight winding of the copper wire. At the same time, a certain tension force needs to be applied to the copper wire during winding to ensure tight winding.

[0004] For example, the patent document with publication number CN121282001B discloses a winding device for transformer production with tension adjustment function, including a wire feeding frame, a positioning seat and a power seat. The wire feeding frame is provided with several fixed shafts, and the wire coil is placed through the fixed shafts. Each fixed shaft is provided with a brake disc at its end. The brake disc rotates synchronously with the fixed shaft, and a brake is provided on one side of each brake disc. The brake can contact the side of the brake disc to form friction braking. When winding the transformer frame, if the wire feeding speed is too fast, the brake can apply pressure to the brake disc, reduce the rotation speed of the fixed shaft through friction, and thus increase the wire tension. The aforementioned device uses the friction of the brake disc to tension the copper wire. However, existing copper wires are generally wound in layers on a spool. Since the outer layer of copper wire is farther from the axis of the spool, it generates a larger torque on the spool, while the inner layer of copper wire is closer to the axis of the spool, it generates a smaller torque on the spool. As a result, even with the same friction, the tension of the outer and inner layers of copper wire is not the same during winding, which affects the winding quality.

[0005] Therefore, a transformer coil winding device with stable wire delivery is needed to solve the above problems. Summary of the Invention

[0006] The summary section of this application is intended to provide a brief overview of the concepts, which will be described in detail in the detailed description section below. This summary section is not intended to identify key or essential features of the claimed technical solutions, nor is it intended to limit the scope of the claimed technical solutions.

[0007] To address the technical problems mentioned in the background section, some embodiments of this application provide a transformer coil winding device for stable wire delivery, comprising: a frame, on which a winding roller and a wire spool frame are rotatably mounted, and a wire bundle spool is rotatably mounted on the wire spool frame, on which copper wire is wound; the frame also provides a wire conductor mechanism located between the winding roller and the wire bundle spool, the wire conductor mechanism comprising: a sliding groove fixed to the frame, on which a sliding seat is slidably mounted; front and rear frames, on which two sets of front and rear frames are fixedly mounted; a fixed wheel rotatably mounted on the front and rear frames; and a clamping wheel mounted on the upper side of the fixed wheel, with sliders rotatably mounted on the front and rear frames at both ends of the clamping wheel, and clamping springs connecting the sliders to the front and rear frames. The copper wire passes between the clamping wheel and the fixed wheel; left and right boxes, with two symmetrical sets arranged on the sliding seat; side frames, slidably mounted on the left and right boxes, with sliding rods fixedly connected to the side frames, the sliding rods slidingly engaging with the left and right boxes, and compression springs connecting the side frames and the left and right boxes; side wheels, rotatably mounted on the side frames, with the copper wire passing between the two side wheels; a reciprocating screw, rotatably mounted on the sliding groove, passing through the sliding seat and threadedly connected to the sliding seat; a guide roller, fixedly mounted on the sliding groove, the sliding groove passing through the sliding seat and slidingly engaging with the sliding seat; a driven wheel, rotatably mounted on the sliding groove; a transmission mechanism is provided between the driven wheel and the reciprocating screw to transmit power and adjust the movement speed of the sliding seat according to the copper wire size.

[0008] Furthermore, the transmission mechanism includes: a transmission shaft rotatably disposed within a sliding groove, the transmission shaft passing through two left and right boxes, a rotating sleeve rotatably disposed within the left and right boxes, the rotating sleeve being sleeved on the transmission shaft and rotating synchronously with the transmission shaft, a hydraulic cylinder fixedly disposed on one side of the sliding groove, a piston plate slidably disposed within the hydraulic cylinder, the piston plate dividing the inner cavity of the hydraulic cylinder into two non-communicating parts, a screw rotatably disposed within the hydraulic cylinder, the screw passing through the piston plate and threadedly connected to the piston plate, and the transmission shaft being fixedly connected to the piston plate.

[0009] Furthermore, two sets of transmission components are provided within the sliding groove. Each transmission component includes a rotating shaft rotatably disposed within the sliding groove, a fixed conical disc fixedly connected to the rotating shaft, and a movable conical disc slidably disposed thereon, with a pulley groove formed between the fixed and movable conical discs. The transmission component also includes a hydraulic piston fixed within the sliding groove, with an embedded ring fixedly connected to the piston rod end of the hydraulic piston. An annular groove is formed on the movable conical disc, and the embedded ring is embedded into the annular groove. A transmission shaft is provided between the two transmission components, wherein the transmission shaft is sleeved within the two pulley grooves. Oil supply lines are respectively provided between the two hydraulic pistons and two parts of the inner cavity of the hydraulic cylinder. A reciprocating screw is fixedly connected to one of the rotating shafts, and the driven wheel is fixedly connected to the other rotating shaft.

[0010] Furthermore, a rotating shaft is rotatably installed inside the left and right boxes. The rotating shaft has a worm gear. A worm wheel is fixedly connected to the rotating sleeve and cooperates with the worm gear. A gear is also fixedly installed on the rotating shaft. A rack is fixedly connected to the side frames. One end of the rack is inserted into the left and right boxes and meshes with the gear.

[0011] Furthermore, a tension assembly is provided on the spool frame. The tension assembly includes a friction plate that rotates synchronously with the wire harness spool on the spool frame. Two fixed frames are also fixedly connected to the friction plate and the spool frame. A sliding frame is slidably mounted on the fixed frame, and a pressure roller is rotatably mounted on the sliding frame. The pressure roller is located on the upper side of the wire harness spool and presses on the copper wire wound on the wire harness spool. A pressure spring is connected between the sliding frame and the fixed frame. A friction assembly that contacts one side of the friction plate is provided on the sliding frame.

[0012] Furthermore, the friction assembly includes: a telescopic electric cylinder fixed on a sliding frame, a pressure block fixedly connected to the piston rod end of the telescopic electric cylinder, a friction block slidably disposed inside the pressure block, a friction ball rotatably disposed on the friction block and in contact with the friction plate, a pressure sensor disposed between the friction block and the pressure block, the pressure sensor being electrically connected to the telescopic electric cylinder, and a shaft end disposed on the friction ball, the shaft end being rotatably engaged with the friction block.

[0013] Furthermore, a motor is fixedly installed on the frame, the power output end of the motor is fixedly connected to the winding roller, a pulley is fixedly connected to one end of the winding roller, and a synchronous belt is used to drive the pulley and the driven wheel.

[0014] The beneficial effects of this application are as follows: 1. Through the sliding groove and sliding seat, when the winding roller rotates once, it drives the driven wheel to rotate through the pulley, which in turn drives the reciprocating screw to rotate through the fixed cone disc, the movable cone disc, and the transmission belt, causing the sliding seat to move and guide the copper wire. At the same time, through the transmission mechanism, when the diameter of the copper wire increases, the transmission ratio between the driven wheel and the reciprocating screw also increases, so that every time the winding roller rotates once, the sliding seat moves by the diameter of the copper wire, ensuring that the copper wire is tightly wound.

[0015] 2. Through the set pressure rollers and pressure blocks, when the motor drives the winding rollers to wind, it pulls the copper wire, causing the wire harness drum to rotate. At this time, friction is generated between the friction plate and the friction ball, thus giving the copper wire a certain tension. As the copper wire on the wire harness drum is gradually unwound, the outer layer of copper wire is unwound first, followed by the inner layer. Under the action of the pressure spring, the sliding frame moves closer to the axis of the wire harness drum, which in turn drives the pressure block to move. At this time, the friction ball rolls on the surface of the friction plate and moves towards the center of the friction plate. When the outer layer of copper wire is unwound, because it is away from the axis of the wire harness drum, the rotational torque generated by the copper wire on the wire harness drum is relatively large. Since the friction block is also away from the center of the friction plate, the frictional torque generated by the friction ball on the friction plate is also relatively large, maintaining the tension of the copper wire. When the inner copper wire is unwound, the copper wire is close to the axis of the wire harness, so the rotational torque generated on the wire harness is small. At the same time, the friction block also moves to the center of the friction plate, so the frictional torque generated on the friction plate is also small. This ensures that the copper wire always maintains a stable tension and avoids uneven tension. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application.

[0017] Furthermore, throughout the accompanying drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and the elements are not necessarily drawn to scale.

[0018] In the accompanying drawings: Figure 1 is an overall schematic diagram according to an embodiment of the present application; Figure 2 is a structural schematic diagram of the sliding groove in the embodiment of Figure 1; Figure 3 is an installation schematic diagram of the sliding seat in the embodiment of Figure 1; Figure 4 is an installation schematic diagram of the two side frames in the embodiment of Figure 1; Figure 5 is an installation schematic diagram of the rotating sleeve in the embodiment of Figure 1; Figure 6 is a structural schematic diagram of the hydraulic cylinder in the embodiment of Figure 1; Figure 7 is an installation schematic diagram of the fixed cone disc and the movable cone disc in the embodiment of Figure 1; Figure 8 is an installation schematic diagram of the transmission belt in the embodiment of Figure 1; Figure 9 is an installation schematic diagram of the embedded ring in the embodiment of Figure 1; Figure 10 is an installation schematic diagram of the hydraulic piston in the embodiment of Figure 1; Figure 11 is an installation schematic diagram of the pressure roller in the embodiment of Figure 1; Figure 12 is an installation schematic diagram of the telescopic electric cylinder in the embodiment of Figure 1; Figure 13 is an installation schematic diagram of the friction ball in the embodiment of Figure 1.

[0019] 10. Frame; 11. Winding roller; 12. Wire spool frame; 13. Motor; 14. Pulley; 15. Wire guiding mechanism; 16. Sliding groove; 17. Sliding seat; 18. Guide roller; 19. Reciprocating lead screw; 20. Front and rear frames; 21. Fixed wheel; 22. Clamping wheel; 23. Slider; 24. Clamping spring; 25. Left and right boxes; 26. Side frames; 27. Side wheels; 28. Sliding rod; 29. ​​Compression spring; 30. Rack; 31. Rotating sleeve; 32. Rotating shaft; 33. Gear; 34. Worm gear; 35. Drive shaft; 6. Hydraulic cylinder; 37. Screw; 38. Piston plate; 39. Driven pulley; 40. Synchronous belt; 41. Rotating shaft; 42. Fixed cone disc; 43. Movable cone disc; 44. Hydraulic piston; 45. Embedded ring; 46. Annular groove; 47. Oil supply line; 48. Friction plate; 49. Wire harness tube; 50. Fixing frame; 51. Pressure roller; 52. Sliding frame; 53. Pressure spring; 54. Telescopic electric cylinder; 55. Pressure block; 56. Friction block; 57. Pressure sensor; 58. Friction ball; 59. Shaft end; 60. Drive belt. Detailed Implementation

[0020] Embodiments of this disclosure will now be described in more detail with reference to the accompanying drawings. While some embodiments of this disclosure are shown in the drawings, it should be understood that this disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this disclosure. It should be understood that the accompanying drawings and embodiments of this disclosure are for illustrative purposes only and are not intended to limit the scope of protection of this disclosure.

[0021] It should also be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings. Unless otherwise specified, the embodiments and features described in this disclosure can be combined with each other.

[0022] It should be noted that the concepts of "first" and "second" mentioned in this disclosure are used only to distinguish different devices, modules or units, and are not used to limit the order of functions performed by these devices, modules or units or their interdependencies.

[0023] It should be noted that the terms "a" and "a plurality of" used in this disclosure are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0024] This disclosure will now be described in detail with reference to the accompanying drawings and embodiments.

[0025] Referring to Figures 1-13, a transformer coil winding device for stable wire feeding includes: a frame 10, a winding roller 11, a spool frame 12, and a conductor mechanism 15. The winding roller 11 is rotatably mounted on the frame 10. The rotation of the winding roller 11 tightly winds copper wire onto it to form a coil. A motor 13 is fixedly mounted on the frame 10, and the power output end of the motor 13 is fixedly connected to one end of the winding roller 11, driving the winding roller 11 to rotate. The spool frame 12 is located in front of the winding roller 11, and a wire bundle spool 49 is rotatably mounted on the spool frame 12, with copper wire wound on the wire bundle spool 49. When the winding roller 11 winds the copper wire, it pulls the copper wire, causing the wire bundle spool 49 to unwind. A conductor mechanism 15 is provided between the spool frame 12 and the winding roller 11 to guide the copper wire to different positions on the winding roller 11, facilitating tight winding of the copper wire.

[0026] In one embodiment, the wire guiding mechanism 15 includes a sliding groove 16, a sliding seat 17, front and rear frames 20, a fixed wheel 21, a clamping wheel 22, left and right boxes 25, two side frames 26, two side wheels 27, a reciprocating screw 19, a guide roller 18, and a driven wheel 39. The sliding groove 16 is fixed on the frame 10 and arranged along the axis of the winding roller 11. The sliding seat 17 is slidably disposed on the sliding groove 16. Two sets of front and rear frames 20 are fixedly disposed on the sliding seat 17. The fixed wheel 21 is rotatably disposed on the front and rear frames 20, and the clamping wheel 22 is disposed on the upper side of the fixed wheel 21. The two ends of the clamping wheel 22 are rotatably disposed with sliders 23 slidably disposed on the front and rear frames 20. A clamping spring 24 is provided between the slider 23 and the front and rear frames 20, and the copper wire passes through the clamping wheel 22 and the fixed wheel 21. During winding, the copper wire passes between the clamping wheel 22 and the fixed wheel 21 and through two front and rear frames 20, which guide the copper wire. The clamping spring 24 acts to hold the copper wire between the clamping wheel 22 and the fixed wheel 21. The left and right boxes 25 are symmetrically arranged on the sliding seat 17. The side frames 26 are slidably mounted on the left and right boxes 25, and sliding rods 28 are fixedly connected to the side frames 26. The sliding rods 28 slide with the left and right boxes 25, and compression springs 29 connect the side frames 26 and the left and right boxes 25. When the copper wire passes through the two front and rear frames 20, the two side wheels 27 are located on the left and right sides of the copper wire, clamping it under the action of the compression springs 29. The side wheels 27 are rotatably mounted on the side frames 26, and the copper wire passes between the two side wheels 27. The reciprocating screw 19 is rotatably mounted on the sliding groove 16, passes through the sliding seat 17, and is threadedly connected to the sliding seat 17. The reciprocating screw 19 rotates, causing the sliding seat 17 to reciprocate left and right, guiding the copper wire to different positions on the winding roller 11. This ensures the copper wire is evenly wound on the winding roller 11, preventing overlapping and interlacing of copper wires in the same layer. The guide roller 18 is fixedly mounted on the sliding groove 16, which passes through the sliding seat 17 and slides in cooperation with it. In the above embodiment, while the winding roller 11 is winding, the sliding seat 17 slides back and forth on the sliding groove 16. The fixed wheel 21, clamping wheel 22, and side wheels 27 guide the copper wire, ensuring that the copper wire is wound onto the winding roller 11 turn by turn during winding.

[0027] Due to the different sizes of copper wires, in order to ensure that the copper wires are tightly wound, when the copper wire is wound once on the winding roller 11, the sliding seat 17 also needs to move by a distance equal to the diameter of the copper wire to ensure that the copper wires in the same layer are closely arranged. The following scheme is adopted.

[0028] A driven wheel 39 is rotatably mounted on the sliding groove 16. A pulley 14 is fixedly connected to one end of the winding roller 11. A synchronous belt 40 is connected between the pulley 14 and the driven wheel 39. When the winding roller 11 rotates to wind, it will drive the driven wheel 39 to rotate through the pulley 14 and the synchronous belt 40. A transmission mechanism is provided between the driven wheel 39 and the reciprocating screw 19. The transmission mechanism includes: a transmission shaft 35 rotatably disposed within a sliding groove 16, the transmission shaft 35 passing through two left and right boxes 25, and a rotating sleeve 31 rotatably disposed within each left and right box 25. The rotating sleeve 31 is sleeved on the transmission shaft 35 and rotates synchronously with the transmission shaft 35. A hydraulic cylinder 36 is fixedly disposed on one side of the sliding groove 16, and a piston plate 38 is slidably disposed within the hydraulic cylinder 36, dividing the inner cavity of the hydraulic cylinder 36 into two non-communicating parts. A screw 37 is rotatably disposed within the hydraulic cylinder 36, passing through the piston plate 38 and threadedly connected to the piston plate 38. The transmission shaft 35 is fixedly connected to the piston plate 38. When the rotating sleeve 31 rotates, it drives the transmission shaft 35 to rotate, which in turn drives the screw 37 to rotate, causing the piston plate 38 to move, adjusting the volume of the two parts of the inner cavity of the hydraulic cylinder 36. The hydraulic cylinder 36 is filled with hydraulic oil.

[0029] Two sets of transmission components are provided within the sliding groove 16. Each transmission component includes a rotating shaft 41 rotatably mounted within the sliding groove 16, with a fixed conical disc 42 fixedly connected to the rotating shaft 41 and a movable conical disc 43 slidably mounted thereon. A pulley groove is formed between the fixed conical disc 42 and the movable conical disc 43. The transmission components also include a hydraulic piston 44 fixed within the sliding groove 16, with an embedded ring 45 fixedly connected to the piston rod end of the hydraulic piston 44. An annular groove 46 is formed on the movable conical disc 43, and the embedded ring 45 is embedded within the annular groove 46. A transmission shaft 35 is provided between the two transmission components, and the transmission shaft 35 is fitted within the two pulley grooves. The structure of the fixed conical disc 42, the movable conical disc 43, and the transmission belt 60 can refer to the continuously variable transmission (CVT) structure in the prior art. By adjusting the distance between the movable conical disc 43 and the fixed conical disc 42, the transmission ratio between the two transmission components is adjusted, thereby adjusting the moving distance of the sliding seat 17 when the winding roller 11 rotates one revolution. By designing a suitable transmission ratio, the change in the moving distance of the sliding seat 17 is made consistent with the diameter of the copper wire. The reciprocating lead screw 19 is fixedly connected to one of the rotating shafts 41, and the driven wheel 39 is fixedly connected to the other rotating shaft 41.

[0030] Two hydraulic pistons 44 are respectively connected to two parts of the inner cavity of the hydraulic cylinder 36 by oil supply lines 47; the reciprocating screw 19 is fixedly connected to one of the rotating shafts 41. When the piston plate 38 moves, the two parts of the inner cavity of the hydraulic cylinder 36 will easily change, thereby causing the piston rod of one hydraulic piston 44 to extend and the piston rod of the other hydraulic piston 44 to retract, with the two piston rods moving the same distance.

[0031] A rotating shaft 32 is rotatably mounted inside the left and right boxes 25. The rotating shaft 32 has a worm gear 34. A worm wheel is fixedly connected to the rotating sleeve 31 and engages with the worm gear 34. A gear 33 is also fixedly mounted on the rotating shaft 32. A rack 30 is fixedly connected to the two side frames 26, with one end of the rack 30 inserted into the left and right boxes 25 and meshing with the gear 33. When a copper wire passes between the two side wheels 27, it compresses the compression spring 29, causing the rack 30 to move, which in turn rotates the gear 33, causing the rotating sleeve 31 to rotate, and subsequently, the drive shaft 35 to rotate.

[0032] In one embodiment, a tension assembly is provided on the spool frame 12. The tension assembly includes a friction plate 48 that rotates synchronously with the wire harness 49 on the spool frame 12. Two fixed frames 50 are fixedly connected to the friction plate 48 and the spool frame 12. A sliding frame 52 is slidably mounted on the fixed frame 50, and a pressure roller 51 is rotatably mounted on the sliding frame 52. The pressure roller 51 is located on the upper side of the wire harness 49 and presses on the copper wire wound on the wire harness 49. A pressure spring 53 is connected between the sliding frame 52 and the fixed frame 50. A friction assembly is provided on the sliding frame 52 that contacts one side of the friction plate 48. The friction assembly generates resistance on the wire harness 49, thereby generating tension on the copper wire during the winding process of the winding roller 11, ensuring that the copper wire is tightly wound.

[0033] Since copper wire is generally wound in layers on a spool, the outer layer of copper wire is farther from the axis of the spool, resulting in a larger torque on the spool, while the inner layer of copper wire is closer to the axis of the spool, resulting in a smaller torque on the spool. This causes the tension of the outer and inner layers of copper wire to be inconsistent during winding, even under the same frictional force, which affects the winding quality. The following solution is adopted.

[0034] The friction assembly includes: a telescopic electric cylinder 54 fixed on a sliding frame 52; a pressure block 55 fixedly connected to the piston rod end of the telescopic electric cylinder 54; a friction block 56 slidably disposed within the pressure block 55; a friction ball 58 rotatably disposed on the friction block 56 in contact with the friction plate 48; a pressure sensor 57 disposed between the friction block 56 and the pressure block 55; the pressure sensor 57 being electrically connected to the telescopic electric cylinder 54; and a shaft end 59 disposed on the friction ball 58, which rotatably engages with the friction block 56. Because the pressure roller 51 presses against the copper wire, as the copper wire on the wire harness cylinder 49 is gradually unwound, the outer layer of copper wire on the wire harness cylinder 49 is unwound first, followed by the inner layer. Under the action of the pressure spring 53, the sliding frame 52 moves closer to the axis of the wire harness cylinder 49, which in turn drives the pressure block 55 to move. At this time, the friction ball 58 rolls on the surface of the friction plate 48 and moves towards the center of the friction plate 48. Pressure sensor 57 is used to detect the pressure between friction block 56 and pressure block 55. When friction ball 58 generates friction on friction plate 48, pressure is generated between friction block 56 and pressure block 55. The magnitude of the friction force between friction block 56 and friction plate 48 is determined by the value detected by pressure sensor 57. When the outer layer copper wire is unwound, the copper wire generates a larger torque on the wire harness 49 because it is far from the axis of the wire harness 49. At the same time, since friction block 56 is also far from the center of friction plate 48, the frictional torque generated by friction ball 58 on friction plate 48 is also large, maintaining the tension of the copper wire. When the inner layer copper wire is unwound, the copper wire generates a smaller torque on the wire harness 49 because it is close to the axis of the wire harness 49. At the same time, friction block 56 also moves to a position close to the center of friction plate 48, and the frictional torque generated on friction plate 48 is also small, ensuring that the copper wire always maintains a stable tension and avoiding uneven tension. The friction point where the friction ball 58 contacts the friction plate 48 is at the same height as the pressure roller 51. At this point, the copper wire overcomes friction to unwind. It should be noted that, to prevent the friction force from decreasing, when the pressure sensor 57 detects that the pressure is below a set threshold, it outputs an electrical signal to control the piston rod of the telescopic cylinder 54 to extend, thereby increasing the friction force between the friction ball 58 and the friction plate 48; when the pressure sensor 57 detects that the pressure is above a set threshold, it controls the piston rod of the telescopic cylinder 54 to retract, thereby reducing the friction force between the friction ball 58 and the friction plate 48, so that the tension of the copper wire is maintained within a stable range.

[0035] Working or installation process: 1. Pass one end of the copper wire on the wire harness cylinder 49 through the two front and rear frames 20 and wind it onto the winding roller 11. When the motor 13 drives the winding roller 11 to wind, it pulls the copper wire, causing the wire harness cylinder 49 to rotate. At this time, friction is generated between the friction plate 48 and the friction ball 58, thus giving the copper wire a certain tension. As the copper wire on the wire harness cylinder 49 is gradually unwound, the outer layer of copper wire on the wire harness cylinder 49 is unwound first, and the inner layer of copper wire is unwound later. Under the action of the pressure spring 53, the sliding frame 52 moves closer to the axis of the wire harness cylinder 49, which in turn drives the pressure block 55 to move. At this time, the friction ball 58 rolls on the surface of the friction plate 48 and moves towards the center of the friction plate 48. When the outer layer of copper wire is unwound, because it is far from the axis of the wire harness 49, the rotational torque generated by the copper wire on the wire harness 49 is relatively large. Meanwhile, because the friction block 56 is also far from the center of the friction plate 48, the frictional torque generated by the friction ball 58 on the friction plate 48 is also relatively large, maintaining the tension of the copper wire. When the inner layer of copper wire is unwound, because the copper wire is close to the axis of the wire harness 49, the rotational torque generated by the copper wire on the wire harness 49 is relatively small. At this time, the friction block 56 also moves to a position close to the center of the friction plate 48, and the frictional torque generated by the friction plate 48 is also relatively small, ensuring that the copper wire maintains a stable tension and avoiding uneven tension.

[0036] 2. When the copper wire passes between the two side wheels 27, it causes the two side wheels 27 to separate, which in turn compresses the compression spring 29 and causes the rack 30 to move. This, in turn, drives the rotating sleeve 31 to rotate through the gear 33 and the worm gear 34. The rotating sleeve 31 drives the transmission shaft 35 to rotate, which in turn drives the screw 37 to rotate and thus drives the piston plate 38 to move. This causes the hydraulic oil in the two parts of the inner cavity of the hydraulic cylinder 36 to flow out in one and into the other, thereby adjusting the distance between the two fixed cone discs 42 and the two movable cone discs 43, thereby adjusting the transmission ratio between the two rotating shafts 41. When the winding roller 11 rotates one revolution, it drives the driven wheel 39 to rotate through the pulley 14. This, in turn, drives the reciprocating screw 19 to rotate through the fixed cone disc 42, the movable cone disc 43 and the transmission belt 60, causing the sliding seat 17 to move. As the diameter of the copper wire increases, the transmission ratio between the driven wheel 39 and the reciprocating screw 19 also increases, which in turn causes the sliding seat 17 to move according to the diameter of the copper wire every time the winding roller 11 rotates once, ensuring that the copper wire is tightly wound.

[0037] The above description is merely a selection of preferred embodiments of this disclosure and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in the embodiments of this disclosure is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described inventive concept. For example, technical solutions formed by substituting the above-described features with (but not limited to) technical features with similar functions disclosed in the embodiments of this disclosure.

Claims

1. A transformer coil winding device for stable wire feeding, comprising: The frame (10) is characterized in that: a winding roller (11) and a wire spool frame (12) are rotatably mounted on the frame (10), a wire harness spool (49) is rotatably mounted on the wire spool frame (12), and copper wire is wound on the wire harness spool (49); the frame (10) is also provided with a wire guide mechanism (15) located between the winding roller (11) and the wire harness spool (49), the wire guide mechanism (15) including: a sliding groove (16) fixed on the frame (10), and a sliding seat (17) slidably mounted on the sliding groove (16). Front and rear frames (20), two sets of front and rear frames (20) are fixedly installed on the sliding seat (17); fixed wheel (21), rotatably installed on the front and rear frames (20); clamping wheel (22), installed on the upper side of the fixed wheel (21), with sliders (23) rotatably installed on the front and rear frames (20) at both ends of the clamping wheel (22), and clamping springs (24) connected between the sliders (23) and the front and rear frames (20), and copper wire passing through the clamping wheel (22) and the fixed wheel (21); left and right Box (25) has two sets of symmetrical left and right sides on the sliding seat (17); side frames (26) are slidably set on the left and right boxes (25), and sliding rods (28) are fixedly connected to the side frames (26). The sliding rods (28) slide with the left and right boxes (25), and compression springs (29) are connected between the side frames (26) and the left and right boxes (25); side wheels (27) are rotatably set on the side frames (26), and copper wires pass between the two side wheels (27); reciprocating screw (19) is rotatably set on the side frames (26). The reciprocating screw (19) is placed on the sliding groove (16), passes through the sliding seat (17), and is threadedly connected to the sliding seat (17); the guide roller (18) is fixedly set on the sliding groove (16), the sliding groove (16) passes through the sliding seat (17) and slides with the sliding seat (17); the driven wheel (39) is rotatably set on the sliding groove (16); a transmission mechanism is provided between the driven wheel (39) and the reciprocating screw (19) to transmit power and adjust the movement speed of the sliding seat (17) according to the copper wire size.

2. The transformer coil winding device for stable wire feeding according to claim 1, characterized in that: The transmission mechanism includes: a transmission shaft (35) rotatably disposed in a sliding groove (16), the transmission shaft (35) passing through two left and right boxes (25), a rotating sleeve (31) rotatably disposed in the left and right boxes (25), the rotating sleeve (31) being sleeved on the transmission shaft (35) and rotating synchronously with the transmission shaft (35), a hydraulic cylinder (36) fixedly disposed on one side of the sliding groove (16), a piston plate (38) slidably disposed in the hydraulic cylinder (36), the piston plate (38) dividing the inner cavity of the hydraulic cylinder (36) into two non-communicating parts, a screw (37) rotatably disposed in the hydraulic cylinder (36), the screw (37) passing through the piston plate (38) and threadedly connected to the piston plate (38), and the transmission shaft (35) being fixedly connected to the piston plate (38).

3. The transformer coil winding device for stable wire feeding according to claim 2, characterized in that: Two sets of transmission components are provided in the sliding groove (16). The transmission components include a rotating shaft (41) rotatably disposed in the sliding groove (16), a fixed cone disc (42) fixedly connected to the rotating shaft (41) and a movable cone disc (43) slidably disposed thereon, and a pulley groove is formed between the fixed cone disc (42) and the movable cone disc (43); the transmission components also include a hydraulic piston (44) fixed in the sliding groove (16), and an embedded ring (45) fixedly connected to the piston rod end of the hydraulic piston (44) on the movable cone disc. (43) has an annular groove (46) and the embedded ring (45) is embedded in the annular groove (46); a transmission shaft (35) is provided between the two transmission components, wherein the transmission shaft (35) is sleeved in the grooves of the two pulleys; wherein the two hydraulic pistons (44) are respectively connected to the two parts of the inner cavity of the hydraulic cylinder (36) by oil supply pipelines (47); the reciprocating screw (19) is fixedly connected to one of the rotating shafts (41), and the driven wheel (39) is fixedly connected to the other rotating shaft (41).

4. The transformer coil winding device for stable wire feeding according to claim 3, characterized in that: A rotating shaft (32) is rotatably installed inside the left and right boxes (25). The rotating shaft (32) has a worm gear (34). A worm wheel is fixedly connected to the rotating sleeve (31) and cooperates with the worm gear (34). A gear (33) is also fixedly installed on the rotating shaft (32). A rack (30) is fixedly connected to the two side frames (26). One end of the rack (30) is inserted into the left and right boxes (25) and meshes with the gear (33).

5. The transformer coil winding device for stable wire feeding according to claim 4, characterized in that: The wire spool frame (12) is provided with a tension assembly, which includes a friction plate (48) on the wire spool frame (12) that rotates synchronously with the wire harness spool (49). On the friction plate (48), two fixed frames (50) are also fixedly connected to the wire spool frame (12). A sliding frame (52) is slidably provided on the fixed frame (50). A pressure roller (51) is rotatably provided on the sliding frame (52). The pressure roller (51) is located on the upper side of the wire harness spool (49). The pressure roller (51) presses on the copper wire wound on the wire harness spool (49). A pressure spring (53) is connected between the sliding frame (52) and the fixed frame (50). A friction assembly is provided on the sliding frame (52) that contacts one side of the friction plate (48).

6. The transformer coil winding device for stable wire feeding according to claim 5, characterized in that: The friction assembly includes: a telescopic electric cylinder (54) fixed on a sliding frame (52), a pressure block (55) fixedly connected to the piston rod end of the telescopic electric cylinder (54), a friction block (56) slidably disposed inside the pressure block (55), a friction ball (58) rotatably disposed on the friction block (56) and in contact with the friction plate (48), a pressure sensor (57) disposed between the friction block (56) and the pressure block (55), the pressure sensor (57) being electrically connected to the telescopic electric cylinder (54), and a shaft end (59) disposed on the friction ball (58), the shaft end (59) being rotatably engaged with the friction block (56).

7. The transformer coil winding device for stable wire feeding according to claim 1, characterized in that: A motor (13) is fixedly installed on the frame (10). The power output end of the motor (13) is fixedly connected to the winding roller (11). A pulley (14) is fixedly connected to one end of the winding roller (11). A synchronous belt (40) is connected between the pulley (14) and the driven wheel (39).

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