Winding device for magnetic core of switching power supply transformer

Abstract

The utility model provides a winding device for a magnetic core of a switching power supply transformer, belongs to the technical field of magnetic core processing, and solves the technical problems that the condition of uneven internal stress is easy to occur and the service life of the magnetic core is shortened due to the lack of a structure for stabilizing the winding tightness degree in the prior art. A winding device for a magnetic core of a switching power supply transformer comprises a winding frame, a protective cylinder fixed on the winding frame, a winding wheel rotatably connected in the protective cylinder, a magnetic core fixing assembly arranged on the winding wheel, a cutting assembly arranged on the winding frame, and a lead frame fixed on the winding frame and located between the magnetic core fixing assembly and the cutting assembly. A wire guide hole is formed in the wire guide frame, and a bobbin is rotationally connected to the winding frame. The coil winding device has the advantages of being suitable for coil winding of magnetic cores of different specifications and capable of stabilizing the winding tightness degree of the magnetic cores.

Description

Technical Field

[0001] The utility model belongs to the technical field of magnetic core processing, and relates to a winding device, in particular to a winding device for a switching power supply transformer magnetic core. Background Technique

[0002] A switching power supply transformer is a power transformer with a switching tube added. In the circuit, in addition to the voltage conversion function of an ordinary transformer, it also has the functions of insulation isolation and power transmission. It is generally used in occasions involving high-frequency circuits such as switching power supplies. The switching power supply transformer and the switching tube together form a self-excited (or he-excited) intermittent oscillator, thereby modulating the input DC voltage into a high-frequency pulse voltage. It plays the role of energy transfer and conversion. In a flyback circuit, when the switching tube is turned on, the transformer converts electrical energy into magnetic energy and stores it, and releases it when the switching tube is turned off. In a forward circuit, when the switching tube is turned on, the input voltage directly supplies the load and stores energy in the energy storage inductor. When the switching tube is turned off, the energy storage inductor continues to supply power to transfer to the load.

[0003] After retrieval, as disclosed in the Chinese patent document, there is a high-efficiency winding device for magnetic cores [Application No.: 202120285340.9; Publication No.: CN 213988589 U]. The high-efficiency winding device for magnetic cores includes a bottom plate. One end of the upper surface of the bottom plate is fixedly connected with a power output device. A transmission device is installed on the upper surface of the bottom plate. The transmission device is fixedly connected with the power output device. One end of the upper surface of the bottom plate away from the power output device is fixedly connected with a clamping device. The clamping device is fixedly connected with the transmission device. The upper surface of the bottom plate is fixedly connected with a U-shaped plate. A positioning device is fixedly connected to the surface of the U-shaped plate. The power output device includes a motor base, a servo motor, a first vertical plate, a connecting shaft and a coupling. One end of the upper surface of the bottom plate is fixedly connected with a motor base, and a servo motor is fixedly connected above the motor base. The utility model can improve the efficiency of coil winding, has adaptability, can adapt to different specifications of magnetic cores for coil winding, has a simple structure and strong practicability.

[0004] Although this patent can adapt to different specifications of magnetic cores for coil winding, however, this patent lacks a structure for stabilizing the winding tightness, and there will be a situation where the winding of the switching power supply transformer magnetic core is too loose or too tight during the winding process, resulting in uneven internal stress and reducing the service life of the magnetic core. Content of the Utility Model

[0005] The purpose of the utility model is to address the above problems existing in the prior art and propose a winding device for a switching power supply transformer magnetic core. The technical problem to be solved by this utility model is: how to achieve coil winding for different specifications of magnetic cores and stabilize the winding tightness of the magnetic core.

[0006] The object of the utility model can be achieved by the following technical solutions:

[0007] A winding device for a switch power supply transformer core, comprising a winding frame, a protective cylinder fixed on the winding frame, a winding wheel rotatably connected inside the protective cylinder. A magnetic core fixing component is arranged on the winding wheel, a cutting component is arranged on the winding frame, a wire guide frame is fixed on the winding frame, the wire guide frame is located between the magnetic core fixing component and the cutting component, and a wire hole is opened on the wire guide frame. A bobbin is rotatably connected to the winding frame.

[0008] The working principle of the utility model is as follows: The transformer core can be placed on the magnetic core fixing component, and then the transformer core is fixed by the magnetic core fixing component. Then, the wire on the bobbin is passed through the wire hole until it is connected to the transformer core. At this time, the winding wheel can be started, and the winding wheel continuously cooperates with the magnetic core fixing component to wind up the wire, so that the wire is wound on the transformer core, realizing the automatic winding function, improving the overall use efficiency. And after the winding is completed, the wire is cut by the cutting component to complete the winding work.

[0009] The magnetic core fixing component includes a pair of tension rods slidably connected to the winding wheel, a transmission gear rotatably connected inside the winding wheel. A pair of driving lead screws are coaxially fixed on the transmission gear, and the threads of the two driving lead screws face opposite directions. The two driving lead screws are respectively threadedly connected to the corresponding tension rods. And a driving motor is fixed inside the winding wheel, and the output shaft of the driving motor is coaxially fixed with a driving gear, and the driving gear meshes with the transmission gear.

[0010] With the above structure, the driving motor can drive the driving gear to rotate. After the driving gear rotates, it will drive the transmission gear to rotate. After the transmission gear rotates, it will drive the two driving lead screws to rotate. The two driving lead screws then drive the corresponding tension rods to perform the tensioning and fixing action. And since the transformer core is fixed by tensioning, it also has good adaptability and can adapt to transformer cores of different specifications.

[0011] The cutting component includes a pair of cutting knives slidably connected to the winding frame, a bidirectional lead screw rotatably connected inside the winding frame. The two threaded sections on both sides of the bidirectional lead screw are threadedly connected to the corresponding cutting knife handles. A transmission motor is fixed inside the winding frame, and the output shaft of the transmission motor is coaxially fixedly connected to the bidirectional lead screw.

[0012] With the above structure, the driving motor can drive the bidirectional lead screw to rotate. After the bidirectional lead screw rotates, it will drive the two cutting knives to perform the cutting action through the threaded connection with the cutting knife handles.

[0013] A servo motor is fixed inside the winding frame, and the output shaft of the servo motor is coaxially fixedly connected to the winding wheel.

[0014] With the above structure, the winding wheel can be driven by a servo motor to rotate, so that the winding wheel cooperates with the magnetic core fixing component to automatically wind the guide wire on the transformer magnetic core, improving the overall winding efficiency.

[0015] A compaction frame is fixed on the protection cylinder. A guide chute is provided on the compaction frame. A compaction plate is slidably connected in the guide chute. A spring is fixed between the top of the compaction plate and the bottom of the guide chute.

[0016] With the above structure, during the process of continuously winding the wire on the transformer magnetic core by the compaction plate, the wire can be compacted in real time, improving the neatness during winding and the aesthetics after winding, and also improving the use effect of the transformer magnetic core.

[0017] Compared with the prior art, the winding device of the switching power supply transformer magnetic core has the following advantages:

[0018] 1. The method of fixing the transformer magnetic core by tensioning also has good adaptability and can adapt to transformer magnetic cores of different specifications.

[0019] 2. And after winding is completed, the wire is cut by the cutting component to complete the winding work, enabling the present utility model to have a cut-off at the winding end point.

[0020] 3. During the process of continuously winding the wire on the transformer magnetic core by the compaction plate, the wire is compacted in real time, improving the tightness and neatness during winding and the aesthetics after winding, and also improving the use effect of the transformer magnetic core. Description of the Drawings

[0021] Figure 1 is a schematic structural diagram of the present utility model.

[0022] Figure 2 is a schematic structural diagram of the magnetic core fixing component in the present utility model.

[0023] Figure 3 is a schematic structural diagram of the inside of the compaction frame in the present utility model.

[0024] Figure 4 is a schematic structural diagram of the cutting component in the present utility model.

[0025] In the figure, 1. winding frame; 2. protection cylinder; 3. winding wheel; 4. wire rack; 5. wire hole; 6. wire cylinder; 7. tensioning rod; 8. transmission gear; 9. driving lead screw; 10. driving motor; 11. driving gear; 12. cutting knife; 13. bidirectional lead screw; 14. transmission motor; 15. servo motor; 16. compaction frame; 17. guide chute; 18. compaction plate; 19. spring. Detailed Embodiment

[0026] The following are specific embodiments of the present utility model. In combination with the accompanying drawings, the technical solutions of the present utility model will be further described, but the present utility model is not limited to these embodiments.

[0027] As Figures 1 - 4 shown, a winding device for a switching power supply transformer core includes a winding frame 1, a protective cylinder 2 fixed on the winding frame 1, a winding wheel 3 rotatably connected inside the protective cylinder 2. A magnetic core fixing component is arranged on the winding wheel 3, a cutting component is arranged on the winding frame 1, a wire guide frame 4 is fixed on the winding frame 1, the wire guide frame 4 is located between the magnetic core fixing component and the cutting component, and a wire hole 5 is formed in the wire guide frame 4. A bobbin 6 is rotatably connected to the winding frame 1.

[0028] The transformer core can be placed on the magnetic core fixing component, and then the transformer core is fixed by the magnetic core fixing component. Then, the wire on the bobbin 6 is passed through the wire hole 5 until it is connected to the transformer core. At this time, the winding wheel 3 can be started, and the winding wheel 3 continuously cooperates with the magnetic core fixing component to wind up the wire, so that the wire is wound on the transformer core, realizing the automatic winding function, improving the overall use efficiency. And after the winding is completed, the wire is cut by the cutting component to complete the winding work.

[0029] The magnetic core fixing component includes a pair of tension rods 7 slidably connected to the winding wheel 3, a transmission gear 8 rotatably connected inside the winding wheel 3. A pair of driving lead screws 9 are coaxially fixed on the transmission gear 8, and the threads of the two driving lead screws 9 face in opposite directions. The two driving lead screws 9 are respectively threadedly connected to the corresponding tension rods 7. And a driving motor 10 is fixed inside the winding wheel 3, and a driving gear 11 is coaxially fixed on the output shaft of the driving motor 10. The driving gear 11 meshes with the transmission gear 8.

[0030] With the above structure, the driving motor 10 can drive the driving gear 11 to rotate. After the driving gear 11 rotates, it will drive the transmission gear 8 to rotate. After the transmission gear 8 rotates, it will drive the two driving lead screws 9 to rotate. The two driving lead screws 9 then drive the corresponding tension rods 7 to perform the action of tensioning and fixing. And because the transformer core is fixed by tensioning, it also has good adaptability and can adapt to transformer cores of different specifications.

[0031] The cutting component includes a pair of cutting knives 12 slidably connected to the winding frame 1, a bidirectional lead screw 13 rotatably connected inside the winding frame 1. The two threaded sections on both sides of the bidirectional lead screw 13 are threadedly connected to the handle parts of the corresponding cutting knives 12. A transmission motor 14 is fixed inside the winding frame 1, and the output shaft of the transmission motor 14 is coaxially fixedly connected to the bidirectional lead screw 13.

[0032] With the above structure, the driving motor 10 can drive the bidirectional lead screw 13 to rotate. After the bidirectional lead screw 13 rotates, it will drive the two cutting knives 12 to perform cutting actions through the threaded connection with the handle of the cutting knife 12.

[0033] A servo motor 15 is fixed inside the winding frame 1, and the output shaft of the servo motor 15 is coaxially and fixedly connected to the winding wheel 3.

[0034] With the above structure, the servo motor 15 can drive the winding wheel 3 to rotate, enabling the winding wheel 3 to cooperate with the magnetic core fixing component to automatically wind the conductor around the transformer magnetic core, thereby improving the overall winding efficiency.

[0035] A compaction frame 16 is fixed on the protective cylinder 2. A guiding chute 17 is provided on the compaction frame 16. A compaction plate 18 is slidably connected inside the guiding chute 17. A spring 19 is fixed between the top of the compaction plate 18 and the bottom of the guiding chute 17.

[0036] With the above structure, during the continuous winding of the conductor around the transformer magnetic core by the compaction plate 18, the conductor can be compacted in real time, improving the neatness during winding and the aesthetics after winding, and also enhancing the service effect of the transformer magnetic core.

[0037] The working principle of the present utility model: Place the transformer magnetic core on the two tensioning rods 7. At this time, the driving motor 10 drives the driving gear 11 to rotate. After the driving gear 11 rotates, it drives the transmission gear 8 to rotate. After the transmission gear 8 rotates, it drives the two driving lead screws 9 to rotate. The two driving lead screws 9 then drive the corresponding tensioning rods 7 to tension and fix the transformer magnetic core. Then, pass the conductor on the bobbin 6 through the wire hole 5 until it is connected to the transformer magnetic core. The servo motor 15 drives the winding wheel 3 to rotate, enabling the winding wheel 3 to cooperate with the magnetic core fixing component to automatically wind the conductor around the transformer magnetic core. During the continuous winding of the conductor around the transformer magnetic core by the compaction plate 18, the conductor can be compacted in real time, improving the neatness during winding and the aesthetics after winding, and also enhancing the service effect of the transformer magnetic core. After winding is completed, the driving motor 10 can drive the bidirectional lead screw 13 to rotate. After the bidirectional lead screw 13 rotates, it will drive the two cutting knives 12 to perform cutting actions on the conductor through the threaded connection with the handle of the cutting knife 12.

[0038] In summary, by placing the transformer core on the core fixing component, then fixing the transformer core through the core fixing component, and then passing the wire on the bobbin 6 through the wire hole 5 until it is connected to the transformer core, at this time, the winding wheel 3 can be started. The winding wheel 3 continuously cooperates with the core fixing component to wind up the wire, so that the wire is wound around the transformer core, realizing the automatic winding function, improving the overall use efficiency, and after the winding is completed, the wire is cut by the cutting component to complete the winding work.

[0039] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art to which the present invention pertains can make various modifications or supplements to the described specific embodiments or use similar methods for substitution, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A winding device for a magnetic core of a switching power supply transformer, comprising a winding frame (1), a protective cylinder (2) fixed on the winding frame (1), and a winding wheel (3) rotatably connected inside the protective cylinder (2), characterized in that: The winding wheel (3) is provided with a magnetic core fixing component, the winding frame (1) is provided with a cutting component, a wire frame (4) is fixed on the winding frame (1), the wire frame (4) is located between the magnetic core fixing component and the cutting component, a wire hole (5) is opened on the wire frame (4), and a wire drum (6) is rotatably connected to the winding frame (1).

2. A winding device for a switching power supply transformer core according to claim 1, characterized in that: The magnetic core fixing assembly comprises a pair of tensioning rods (7) slidably connected to the winding wheel (3), and a transmission gear (8) rotatably connected inside the winding wheel (3); a pair of driving screws (9) are coaxially fixed on the transmission gear (8), and the threads of the two driving screws (9) are in opposite directions; the two driving screws (9) are respectively threadedly connected to the corresponding tensioning rods (7); a driving motor (10) is fixed inside the winding wheel (3), and a driving gear (11) is coaxially fixed to the output shaft of the driving motor (10), and the driving gear (11) is meshed with the transmission gear (8).

3. The winding device for a switching power supply transformer core according to claim 1, characterized in that: The cutting assembly comprises a pair of cutting knives (12) slidably connected to the winding frame (1), and a bidirectional lead screw (13) rotatably connected inside the winding frame (1), the threaded sections on both sides of the bidirectional lead screw (13) being threadedly connected to the corresponding handles of the cutting knives (12), and a transmission motor (14) being fixed inside the winding frame (1), and the output shaft of the transmission motor (14) being coaxially fixedly connected to the bidirectional lead screw (13).

4. The winding device for a switching power supply transformer core according to claim 1, characterized in that: A servo motor (15) is fixed inside the winding frame (1), and an output shaft of the servo motor (15) is coaxially fixedly connected to the winding wheel (3).

5. The winding device for a switching power supply transformer core according to claim 1, characterized in that: A compacting frame (16) is fixed on the protective tube (2), a guide slot (17) is provided on the compacting frame (16), a compacting plate (18) is slidably connected in the guide slot (17), and a spring (19) is fixed between the top of the compacting plate (18) and the bottom of the guide slot (17).

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