A self-wound air core coil device

Abstract

The application discloses a self-winding hollow coil device, and relates to the technical field of mechanical automation, which comprises a machine base and a wire feeding unit, a lifting frame, a lifting cylinder, a core mold, a motor, a locking structure, a capturing unit, a wire end flattening unit, a coil pre-pressing unit, a wire cutting unit, a wire tail compacting unit and a discharging unit which are arranged on the machine base. The wire feeding unit is used for conveying copper wires, the locking structure can lock the copper wires, and the units work cooperatively to complete the manufacturing of the hollow coil. The application realizes automatic winding of the hollow coil, improves production efficiency, and guarantees product quality and consistency.

Description

Technical Field

[0001] This application relates to the technical field of mechanical automation, and in particular to a device for self-winding hollow coils. Background Technology

[0002] As a key component in electronic devices, the manufacturing precision and consistency of air-core coils directly affect the performance and reliability of electronic products. In the traditional air-core coil production process, the winding of the coil and the fixing of the beginning and end are mostly completed manually or by semi-automatic equipment, which results in low production efficiency, high dependence on the operator's skills, and difficulty in ensuring product consistency.

[0003] In the present technology, some automatic winding equipment has emerged to improve production efficiency and automation. However, these devices still have shortcomings in achieving precise capture, reliable locking, and flattening of the coil's starting end, as well as the coordination and stability of key processes such as coil tail cutting, compaction, and finished product demolding. For example, the fixing of the coil's starting end is often not firm enough or its shape is irregular, affecting the stability of subsequent winding and the final geometric profile of the coil; during the winding of the coil body and the processing of the tail end, there is a lack of effective support and reaction force design, which can easily lead to coil deformation or displacement when cutting the copper wire; the process connections in the entire manufacturing process are not tight enough, and the synchronization and coordination accuracy between various actuators need to be improved, which restricts further improvement in production efficiency and finished product qualification rate.

[0004] Therefore, there is an urgent need for a self-winding hollow coil equipment with a higher degree of automation, close connection between each process and precise coordination, in order to solve the above-mentioned technical problems and achieve high-efficiency and high-consistency automated production of hollow coils. Summary of the Invention

[0005] In view of the problems existing in the prior art, this application provides a self-winding hollow coil device.

[0006] This application provides a self-winding hollow coil device, which adopts the following technical solution:

[0007] A self-winding hollow coil device includes: a base; a wire feeding unit for conveying copper wire; a lifting frame slidably mounted on the base in a vertical direction; a lifting cylinder mounted on the base for driving the lifting frame to move up and down; a core mold rotatably mounted on the lifting frame; a motor mounted on the lifting frame for driving the core mold to rotate; a locking structure mounted on the core mold for locking the copper wire; a capturing unit mounted on the base for capturing the copper wire, enabling the locking structure to accurately lock the copper wire; a wire end flattening unit mounted on the base for flattening the protruding starting wire end onto the core mold; a coil pre-compression unit mounted on the base for compressing the coil; a wire cutting unit mounted on the base for cutting the copper wire; a wire tail compaction unit for pressing and adhering the wire tail to the outer diameter surface of the coil; and a unloading unit for peeling the finished coil from the core mold.

[0008] Optionally, the wire feeding unit includes: a winding reel, rotatably mounted on a machine base, for winding copper wire; a wire feeding mechanism, including a wire feeding roller, a pressure roller, and a drive motor, wherein the wire feeding roller and the pressure roller are both rotatably mounted on the machine base for clamping the copper wire, and the drive motor is used to drive the wire feeding roller to rotate; multiple stress-relieving guide rollers, all rotatably mounted on the machine base, each stress-relieving guide roller being evenly distributed between the winding reel and the wire feeding mechanism and being in rolling contact with the copper wire for eliminating bending stress in the copper wire; and a positioning seat, fixedly mounted on the machine base, wherein a positioning sleeve is fixedly mounted on the positioning seat for the copper wire to pass through and for positioning the copper wire.

[0009] Optionally, the locking structure includes a corner block fixedly disposed on the side wall of the core mold, and the bottom of the corner block is provided with a positioning notch for the copper wire to be inserted.

[0010] Optionally, the capture unit includes a curved rod that is vertically slidably mounted on the base, a servo cylinder for driving the curved rod to move up and down, and a bending part on the curved rod for receiving copper wires.

[0011] Optionally, the side wall of the corner block is also provided with a positioning stop for positioning the starting wire end of the coil, and the wire end flattening unit is used to make the wire end fit tightly against the positioning stop of the corner block.

[0012] Optionally, the wire end flattening unit includes a pressure rod rotatably mounted on the base and a stepper motor for driving the pressure rod to rotate. The end of the pressure rod is provided with a limiting groove for the copper wire to be inserted.

[0013] Optionally, the coil preload unit includes a clamping block that is slidably disposed on the base in a horizontal direction, and a first driving structure for driving the clamping block to slide. The clamping block is provided with a chamfered surface for abutting against the copper wire coil and clamping the coil.

[0014] Optionally, the cutting unit includes a cutting blade and a top support block slidably mounted on the base, a second driving structure for driving the cutting blade to slide, and a third driving structure for driving the top support block to slide. The position of the cutting blade corresponds to the position of the positioning sleeve and is used to cut the copper wire at the outlet position of the positioning sleeve. The top support block is used to abut against the coil and provide reverse support force for the cutting blade to cut the copper wire.

[0015] Optionally, the wire end compaction unit includes a longitudinal push block and a transverse push block slidably disposed on the base, an electric push rod for driving the longitudinal push block to slide, and a fourth drive structure for driving the transverse push block to slide. The end of the longitudinal push block is provided with an arc-shaped surface, and the transverse push block is used to press against the bent part of the copper wire.

[0016] Optionally, the unloading unit includes a demolding block that is horizontally slidably disposed on the machine base, and a fifth driving structure for driving the demolding block to slide, wherein the demolding block is used to slide to a position above the finished coil.

[0017] In summary, this application includes at least one of the following beneficial technical effects:

[0018] 1. This application uses a wire feeding unit to deliver copper wire, providing raw materials for coil winding; a lifting frame, in conjunction with a lifting cylinder, can drive the core mold to move up and down, adjusting its position; a capturing unit precisely captures the copper wire, and a locking structure locks the copper wire onto the core mold, ensuring a stable starting position for winding; a motor drives the core mold to rotate, realizing copper wire winding; a wire end flattening unit flattens the starting wire end onto the core mold, ensuring that the geometric profile of the beginning meets design requirements; a coil pre-pressing unit presses the coil to prevent centrifugal loosening or wire routing disorder during high-speed winding; a wire cutting unit cuts the copper wire; a wire tail compaction unit presses the wire tail onto the outer diameter surface of the coil, completing the closed-loop forming of the shape; and a material unloading unit peels the finished coil from the core mold, achieving smooth material discharge. Overall, this improves the automation level and production efficiency of the equipment, and enhances the yield and product quality.

[0019] 2. This application uses a winding reel to wind copper wire, which is convenient for storage and supply; the wire feeding roller and pressure roller clamp the copper wire, and the drive motor drives the wire feeding roller to rotate to realize the copper wire transportation; multiple stress-relieving guide rollers can eliminate the bending stress of the copper wire and avoid the stress affecting the winding quality; the positioning sleeve allows the copper wire to pass through and be positioned, ensuring that the copper wire is accurately transported to the position of the subsequent process, improving the automation level and production efficiency of the equipment, and ensuring the yield and quality of finished products.

[0020] 3. In this application, the clamping block of the coil preload unit slides horizontally under the drive of the first drive structure, and uses its inclined surface to press against the copper wire coil to prevent centrifugal loosening or wire routing disorder during high-speed winding, which helps to improve the finished quality of the hollow coil. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0022] Figure 2 This is a schematic diagram illustrating the structure of the core mold in an embodiment of this application;

[0023] Figure 3 This is a schematic diagram illustrating the structure of the wire feeding unit according to an embodiment of this application;

[0024] Figure 4 This is a partial structural schematic diagram of an embodiment of this application;

[0025] Figure 5 This is a schematic diagram illustrating the structure of the capture unit in an embodiment of this application;

[0026] Figure 6 This is a schematic diagram illustrating the structure of the wire end flattening unit in an embodiment of this application;

[0027] Figure 7 This is a schematic diagram illustrating the structure of the coil preload unit according to an embodiment of this application;

[0028] Figure 8 This is a schematic diagram illustrating the structure of the longitudinal push block in an embodiment of this application.

[0029] Explanation of reference numerals in the attached drawings: 1. Base; 11. Lifting frame; 12. Lifting cylinder; 13. Motor; 2. Wire feeding unit; 21. Winding reel; 22. Stress-relieving guide roller; 23. Positioning seat; 24. Wire feeding roller; 25. Pressure roller; 26. Drive motor; 27. Positioning sleeve; 3. Core mold; 31. Corner block; 32. Positioning notch; 33. Positioning stop; 4. Snapping unit; 41. Bending rod; 411. Bending section; 42. Servo cylinder; 5. Wire end flattening unit; 51. 511. Pressure rod; 52. Limiting slot; 6. Stepper motor; 6. Coil pre-compression unit; 61. Pressing block; 611. Beveled surface; 62. Guide rail; 63. Slider; 64. Guide wheel; 65. Cam; 66. Servo motor; 67. Tension spring; 7. Cutting unit; 71. Cutting tool; 72. Top support block; 8. Wire tail compaction unit; 81. Longitudinal push block; 811. Arc surface; 82. Transverse push block; 83. Electric push rod; 9. Unloading unit; 91. Demolding stop. Detailed Implementation

[0030] The following will be combined with the appendix Figure 1 - Appendix Figure 8The technical solutions in the embodiments of the present invention are clearly and completely described herein. The described embodiments are only possible technical implementations of the present invention and not all possible implementations. Those skilled in the art can obtain other embodiments in conjunction with the embodiments of the present invention without creative effort, and these embodiments are also within the protection scope of the present invention.

[0031] This application mainly adopts a centralized power distribution and multi-process collaborative execution architecture, which achieves the effect of efficient and highly consistent automated production of hollow coils. The following is a further detailed description of this application.

[0032] This application discloses a self-wound hollow coil device. (Refer to...) Figure 1 and Figure 2 The system includes a base 1, a wire feeding unit 2, a lifting frame 11, a lifting cylinder 12, a core mold 3, a motor 13, a locking structure, a capturing unit 4, a wire end flattening unit 5, a coil pre-compression unit 6, a wire cutting unit 7, a wire tail compaction unit 8, and a feeding unit 9. The wire feeding unit 2 is mounted on the base 1 to feed copper wire to the equipment. The lifting frame 11 is slidably mounted on the base 1 in a vertical direction. The lifting cylinder 12 is mounted on the base 1 to drive the lifting frame 11 to move up and down. The core mold 3 is rotatably mounted on the lifting frame 11. The motor 13 is mounted on the lifting frame 11 to drive the core mold 3 to rotate. The locking structure... The copper wire is locked on the core mold 3, the copper wire is captured by the capture unit 4 on the machine base 1, and the locking structure accurately locks the copper wire. The wire end flattening unit 5 on the machine base 1 flattens the protruding starting wire end on the core mold 3. The coil pre-compression unit 6 on the machine base 1 compresses the coil. The wire cutting unit 7 on the machine base 1 cuts the copper wire. The wire tail compaction unit 8 presses the wire tail and attaches it to the outer diameter surface of the coil. The unloading unit 9 peels the finished coil off the core mold 3. This achieves the automation of hollow coil winding, end processing and demolding, improving production efficiency and finished product quality.

[0033] Reference Figure 3 Specifically, the wire feeding unit 2 includes a winding reel 21, a wire feeding mechanism, a stress-relieving guide roller 22, and a positioning seat 23. The winding reel 21 is rotatably mounted on the machine base 1 and is used to wind copper wire. It can adopt a common disc structure, and the material can be metal or plastic, as long as it can stably wind copper wire. In some cases, a similar spool structure can be used to replace the winding reel 21. The wire feeding mechanism includes a wire feeding roller 24, a pressure roller 25, and a drive motor 26. Both the wire feeding roller 24 and the pressure roller 25 are rotatably mounted on the machine base 1 and are used to clamp the copper wire. The drive motor 26 is used to drive the wire feeding roller 24 to rotate. The wire feeding roller 24 and the pressure roller 25 are usually made of metal. The side walls of the wire feeding roller 24 and the pressure roller 25 are provided with annular grooves for the copper wire to pass through and for positioning the copper wire. The wire feeding roller 24 is connected to the drive motor 26 through a gear reducer.

[0034] Reference Figure 3 Multiple stress-relieving guide rollers 22 are provided, all rotatably mounted on the base 1, and each stress-relieving guide roller 22 is positioned between the winding reel 21 and the wire feeding mechanism. Specifically, the stress-relieving guide rollers 22 are arranged in two rows, and the stress-relieving guide rollers 22 in the same row are evenly distributed along the feeding direction of the copper wire. The copper wire passes through the two rows of stress-relieving guide rollers 22 and is in rolling contact with each stress-relieving guide roller 22. The sidewalls of the stress-relieving guide rollers 22 are also provided with annular grooves along the circumference of the stress-relieving guide rollers 22 for the copper wire to pass through. During the feeding process, each stress-relieving guide roller 22 can effectively eliminate the bending stress of the copper wire, ensuring that the copper wire is straight. The stress-relieving guide rollers 22 are generally cylindrical, with a polished surface, and can be made of stainless steel or other materials; in some cases, roller sets can also be used to replace the stress-relieving guide rollers 22.

[0035] Reference Figure 3 The positioning seat 23 is fixedly mounted on the base 1, and a positioning sleeve 27 is fixedly mounted on the positioning seat 23 for the copper wire to pass through and for positioning the copper wire. The positioning seat 23 is usually made of metal or plastic, and the inner diameter of the positioning sleeve 27 is adapted to the outer diameter of the copper wire to ensure that the copper wire can pass through smoothly and be accurately positioned. The combination logic of the wire feeding unit 2 is as follows: the winding reel 21 outputs copper wire, which, after being relieved of stress by the stress-relieving guide roller 22, is clamped by the wire feeding mechanism and conveyed to the positioning sleeve 27, and finally reaches the winding part. This combination can ensure the stability and accuracy of the copper wire during the conveying process and avoid the influence of stress and conveying errors on the winding quality.

[0036] Reference Figure 2 Specifically, the locking structure includes a bend block 31 fixedly mounted on the side wall of the core mold 3. The bottom of the bend block 31 has a positioning notch 32 for the copper wire to be inserted. The bend block 31 is generally made of metal and is welded or integrally formed on the side wall of the core mold 3. The positioning notch 32 is usually V-shaped or U-shaped to facilitate accurate insertion of the copper wire. In some special designs, the bend block 31 can also have an adjustable structure to accommodate copper wires of different specifications. The side wall of the bend block 31 also has a positioning stop 33 for positioning the starting end of the coil. The positioning stop 33 is integrally formed with the bend block 31 or fixed to the bend block 31 by welding or other methods. Its height and length are determined according to the design requirements of the hollow coil. When the copper wire is inserted into the positioning notch 32, as the core mold 3 rotates, the positioning notch 32 bends the end of the copper wire, achieving initial locking of the starting end and providing a stable starting position for subsequent winding.

[0037] Reference Figure 4 and Figure 5Specifically, the capture unit 4 includes a curved rod 41 vertically slidably mounted on the base 1, a servo cylinder 42 for driving the curved rod 41 up and down, and a bending part 411 on the curved rod 41 for receiving copper wire. The curved rod 41 is generally made of metal, and the angle and shape of its bending part 411 are designed according to the copper wire conveying path and capture requirements. The servo cylinder 42 is connected to the curved rod 41 through a piston rod to achieve precise lifting and lowering of the curved rod 41. In some similar devices, an electric push rod can also be used to replace the servo cylinder 42 to drive the curved rod 41. The copper wire is captured by the rising of the curved rod 41, and then, in conjunction with the lowering of the core mold 3, the copper wire smoothly enters the positioning notch 32 of the locking structure, achieving precise capture and initial locking. This is because the servo cylinder 42 can precisely control the lifting and lowering position of the curved rod 41, and the bending part 411 can accurately receive the copper wire, ensuring the accuracy and reliability of the capture action.

[0038] Reference Figure 4 and Figure 6 The wire end flattening unit 5 includes a pressure rod 51 rotatably mounted on the base 1 and a stepper motor 52 for driving the pressure rod 51 to rotate. The end of the pressure rod 51 is provided with a limiting slot 511 for the copper wire to be inserted. The pressure rod 51 is typically made of metal, and its length and diameter are determined according to actual needs. The width of the limiting slot 511 is adapted to the outer diameter of the copper wire to ensure accurate insertion. In other devices, other drive structures can be used to replace the stepper motor 52. When the pressure rod 51 rotates, the limiting slot 511 forces the protruding starting wire end to be flattened against the positioning stop 33 of the bend block 31, ensuring that the geometric profile of the starting end meets the design requirements. This is because the stepper motor 52 can precisely control the rotation angle of the pressure rod 51, and the limiting slot 511 can accurately hold the copper wire, ensuring the accuracy of the flattening action.

[0039] Reference Figure 4 and Figure 7 Specifically, the coil pre-loading unit 6 includes a clamping block 61 slidably mounted on the base 1 in the horizontal direction, and a first driving structure for driving the clamping block 61 to slide. The clamping block 61 has a beveled surface 611 for abutting against the copper wire coil and clamping the coil. The clamping block 61 is generally made of metal, and the angle and length of its beveled surface 611 are designed according to actual needs. The working time of the coil pre-loading unit 6 is after the coil has been successfully wound 2-3 turns and a pre-wound layer has been formed. The first driving structure drives the clamping block 61 to approach the coil, and the beveled surface 611 on the clamping block 61 abuts against the bottom position of the coil pre-wound layer. Then, as the clamping block 61 continues to slide, the end of the beveled surface 611 clamps the pre-wound layer, making the coil of the pre-wound layer tighter and preventing centrifugal loosening or wire tangling during subsequent high-speed winding.

[0040] Reference Figure 7Specifically, the first driving structure includes a guide rail 62, a slider 63, a guide wheel 64, a cam 65, a servo motor 66, and a tension spring 67. The guide rail 62 is fixedly mounted on the base 1, the slider 63 is slidably mounted on the guide rail 62, and the clamping block 61 is fixedly mounted on the guide rail 62. The guide wheel 64 is rotatably mounted on the slider 63. The servo motor 66 is fixedly mounted on the base 1, and the cam 65 is fixedly connected to the output shaft of the servo motor 66. The two ends of the tension spring 67 are fixedly connected to the slider 63 and the guide rail 62 respectively, and are used to drive the slider 63 to slide closer to the cam 65, so that the guide wheel 64 and the cam 65 always remain in contact. By driving the cam 65 to rotate through the servo motor 66, the slider 63 can be driven to slide on the guide rail 62. In addition, the first driving structure can also be a cylinder or an electric push rod, etc., which is connected to the clamping block 61 through a piston rod to realize the sliding of the clamping block 61. In some cases, a screw and nut mechanism can also be used to drive the clamping block 61 to slide.

[0041] Reference Figure 4 Specifically, the tangent unit 7 includes a cutting blade 71 and a top support block 72 slidably mounted on the base 1, a second drive structure for driving the cutting blade 71 to slide, and a third drive structure for driving the top support block 72 to slide. The position of the cutting blade 71 corresponds to the exit position of the positioning sleeve 27, and it can cut the copper wire at the exit position of the positioning sleeve 27. The top support block 72 is used to abut against the coil, providing reverse support force for the cutting blade 71 to cut the copper wire. The cutting blade 71 is usually made of high-strength steel, and its end is provided with a cutting edge; the top support block 72 is generally made of metal with a smooth surface. The second and third drive structures are the same as the first drive structure, and also use a combination of guide rails, sliders, guide wheels, cams, servo motors, and tension springs. The cutting blade 71 is fixedly mounted on the slider of the second drive structure, and the top support block 72 is fixedly mounted on the slider of the third drive structure. In addition, the second and third drive structures can also use cylinders or electric push rods, etc. When it is necessary to cut the copper wire, the cutting blade 71 quickly slides to cut the copper wire, while the top support block 72 provides a reverse support force to ensure the stability of the cutting process and prevent the coil from deforming.

[0042] Reference Figure 4 and Figure 8Specifically, the wire end compaction unit 8 includes a longitudinal push block 81 and a transverse push block 82 slidably mounted on the base 1, an electric push rod 83 for driving the longitudinal push block 81 to slide, and a fourth drive structure for driving the transverse push block 82 to slide. The end of the longitudinal push block 81 is provided with an arc-shaped surface 811. The longitudinal push block 81 and the transverse push block 82 are generally made of metal. The arc-shaped surface 811 of the longitudinal push block 81 can reduce friction with the copper wire. The electric push rod 83 is fixedly mounted on the base 1, and its movable rod is fixedly connected to the longitudinal push block 81. When the copper wire is cut, the electric push rod 83 pushes the longitudinal push block 81 upward, and the arc-shaped surface 811 on the longitudinal push block 81 abuts against the cut copper wire. Under the action of the pushing force, the copper wire is folded upward and attached to the coil surface.

[0043] Reference Figure 4 The function of the transverse pusher 82 is to ensure the accuracy of the bend by pressing against the bent part of the copper wire while it is folding. Its end has a rounded chamfer to make the transition of the bend smoother and reduce wear on the copper wire. The specific structure of the fourth drive structure is the same as that of the first drive structure, also using a combination of guide rails, sliders, guide wheels, cams, servo motors, and tension springs. The transverse pusher 82 is fixedly connected to the slider on the fourth drive structure. Similarly, the fourth drive structure can also use a cylinder or an electric push rod.

[0044] Reference Figure 4 Specifically, the unloading unit 9 includes a demolding block 91 horizontally slidably mounted on the base 1, and a fifth drive structure for driving the demolding block 91 to slide. The fifth drive structure can move the demolding block 91 to a position above the finished coil. The demolding block 91 is generally made of metal, and its shape and size are designed according to the size and shape of the finished coil. The specific structure of the fifth drive structure is also the same as that of the first drive structure, and the demolding block 91 is fixedly mounted on the slider of the fifth drive structure. The working principle of the unloading unit 9 is that after the coil is fully formed, the core mold 3 moves downward to avoid it, the demolding block 91 moves along the slide to the mold position, the core mold 3 retracts and rises, and the mechanical stopping force of the block peels off the finished coil, achieving smooth unloading.

[0045] The implementation principle of the self-winding hollow coil equipment in this application embodiment is as follows: The copper wire is fed by the wire feeding unit 2 to provide raw materials for coil winding; the lifting frame 11, in conjunction with the lifting cylinder 12, can drive the core mold 3 to move up and down to adjust the position of the core mold 3; the capturing unit 4 accurately captures the copper wire so that the locking structure locks the copper wire on the core mold 3 to ensure the stability of the starting position of the winding; the motor 13 drives the core mold 3 to rotate to realize the winding of the copper wire; the wire end flattening unit 5 flattens the starting wire end on the core mold 3 to ensure that the geometric contour of the beginning end meets the design requirements; the coil pre-pressing unit 6 presses the coil to prevent centrifugal loosening or wire disorder during high-speed winding; the wire cutting unit 7 cuts the copper wire; the wire tail compaction unit 8 presses the wire tail to adhere to the outer diameter surface of the coil to complete the closed-loop forming of the shape; the unloading unit 9 peels the finished coil from the core mold 3 to achieve smooth material discharge, which improves the automation level and production efficiency of the equipment, and enhances the yield and product quality.

[0046] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A device for self-winding hollow coils, characterized in that, include: Base (1); The wire feeding unit (2) is used to feed copper wire; The lifting frame (11) is slidably mounted on the base (1) in the vertical direction; The lifting cylinder (12) is mounted on the base (1) and is used to drive the lifting frame (11) to move up and down. The core mold (3) is rotatably mounted on the lifting frame (11); An electric motor (13) is mounted on a lifting frame (11) and is used to drive the core mold (3) to rotate. A locking structure is provided on the core mold (3) for locking the copper wire; The capture unit (4) is set on the base (1) and is used to capture copper wires so that the locking structure can accurately lock the copper wires. The wire end flattening unit (5) is set on the machine base (1) and is used to flatten the protruding starting wire end on the core mold (3); The coil preload unit (6) is installed on the base (1) and is used to press the coil; A wire cutting unit (7) is mounted on the base (1) and is used to cut copper wires; The wire tail compaction unit (8) is used to press and adhere the wire tail to the outer diameter surface of the coil; The unloading unit (9) is used to peel the finished coil from the core mold (3); The locking structure includes a corner block (31) fixedly disposed on the side wall of the core mold (3), and the bottom of the corner block (31) is provided with a positioning notch (32) for the copper wire to be inserted; The capture unit (4) includes a bent rod (41) that is vertically slidably mounted on the base (1), a servo cylinder (42) for driving the bent rod (41) to move up and down, and a bent part (411) is provided on the bent rod (41) for receiving copper wire. The side wall of the corner block (31) is also provided with a positioning stop (33) for positioning the starting wire end of the coil. The wire end flattening unit (5) is used to make the wire end stick to the positioning stop (33) of the corner block (31). The wire flattening unit (5) includes a pressure rod (51) rotatably mounted on the base (1) and a stepper motor (52) for driving the pressure rod (51) to rotate. The end of the pressure rod (51) is provided with a limiting slot (511) for the copper wire to be inserted.

2. The self-winding hollow coil device according to claim 1, characterized in that: The wire feeding unit (2) includes: A winding reel (21) is rotatably mounted on a base (1) for winding copper wire; The wire feeding mechanism includes a wire feeding roller (24), a pressure roller (25) and a drive motor (26). The wire feeding roller (24) and the pressure roller (25) are rotatably mounted on the machine base (1) for clamping copper wires. The drive motor (26) is used to drive the wire feeding roller (24) to rotate. Multiple stress-relieving guide rollers (22) are provided and are rotatably mounted on the machine base (1). Each stress-relieving guide roller (22) is evenly distributed between the winding disc (21) and the wire feeding mechanism and is rolledly connected to the copper wire to eliminate the bending stress of the copper wire. A positioning seat (23) is fixedly installed on the base (1). A positioning sleeve (27) is fixedly installed on the positioning seat (23) for the copper wire to pass through and for positioning the copper wire.

3. The self-winding hollow coil device according to claim 1, characterized in that: The coil preload unit (6) includes a clamping block (61) that is slidably disposed on the base (1) in the horizontal direction, and a first driving structure for driving the clamping block (61) to slide. The clamping block (61) is provided with a chamfered surface (611) for abutting against the copper wire coil and clamping the coil.

4. The self-winding hollow coil device according to claim 1, characterized in that: The cutting unit (7) includes a cutting blade (71) and a top support block (72) slidably mounted on the base (1), as well as a second driving structure for driving the cutting blade (71) to slide and a third driving structure for driving the top support block (72) to slide. The position of the cutting blade (71) corresponds to the position of the positioning sleeve (27) and is used to cut the copper wire at the outlet position of the positioning sleeve (27). The top support block (72) is used to abut against the coil and provide reverse support force for the cutting blade (71) to cut the copper wire.

5. The self-winding hollow coil device according to claim 4, characterized in that: The wire end compaction unit (8) includes a longitudinal push block (81) and a transverse push block (82) slidably disposed on the base (1), an electric push rod (83) for driving the longitudinal push block (81) to slide, and a fourth drive structure for driving the transverse push block (82) to slide. The end of the longitudinal push block (81) is provided with an arc-shaped surface (811), and the transverse push block (82) is used to press against the bent part of the copper wire.

6. The self-winding hollow coil device according to claim 1, characterized in that: The unloading unit (9) includes a demolding block (91) that is horizontally slidably disposed on the base (1), and a fifth driving structure for driving the demolding block (91) to slide, and the demolding block (91) is used to slide to the position above the finished coil.

Images