A boneless transformer winding device

Abstract

This utility model discloses a frameless transformer winding device, including a base plate. A hollow block is fixedly connected to the upper surface of the base plate. A connecting block is movably connected to the middle of the upper surface of the hollow block. A first rotating disk is movably connected to the inner surface of the connecting block. A winding post is movably connected to the inner surface of the first rotating disk. A toothed plate is fixedly connected to the left surface of the connecting block. The lower surface of the toothed plate is movably connected to the upper surface of the hollow block. This utility model, by setting up a connecting block, a first rotating disk, a toothed plate, a round shaft, and gears, allows the round shaft and gears to rotate when the first motor starts running. Because the gears and toothed plate mesh with each other, the toothed plate and the connecting block as a whole will move left and right along the outer surface of the winding post under the drive of the gears. During this process, the distance between the first and second rotating disks will change, thereby facilitating the production of frameless coils of different lengths.

Description

Technical Field

[0001] This utility model relates to the technical field of coil winding devices, and in particular to a wire winding device for a frameless transformer. Background Technology

[0002] A frameless transformer is a power conversion device that uses a special winding process. Its core feature is that it eliminates the magnetic circuit gaps of traditional iron core laminations by optimizing the winding structure. This design reduces hysteresis loss and eddy current effects, making electromagnetic energy transfer more efficient. The windings are made of highly conductive materials with precise arrangement, and the vacuum impregnation process ensures insulation reliability. Frameless transformers have the advantages of compact size and low temperature rise. They also significantly reduce vibration and noise during operation, making them suitable for special power supply applications that are space-sensitive or require quiet operation, such as medical equipment and precision instruments.

[0003] When producing boneless transformers, operators frequently use winding devices to wind boneless coils. However, while existing winding devices have basic winding functions, they generally require fixed-length stranded wire plates to produce boneless coils of the required length. This necessitates operators preparing numerous stranded wire plates in advance when producing boneless coils of varying lengths, increasing production costs and causing inconvenience. Therefore, improvements are needed. Utility Model Content

[0004] The purpose of this invention is to provide a frameless transformer winding device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a frameless transformer winding device, comprising a base plate, a hollow block fixedly connected to the upper surface of the base plate, a connecting block movably connected to the middle of the upper surface of the hollow block, a first rotating disk movably connected to the inner surface of the connecting block, a winding post movably connected to the inner surface of the first rotating disk, a toothed plate fixedly connected to the left surface of the connecting block, the lower surface of the toothed plate movably connected to the upper surface of the hollow block, a first motor fixedly installed on the left side of the top of the inner surface of the hollow block, a round shaft fixedly sleeved at the other end of the output shaft of the first motor, the top end of the outer surface of the round shaft penetrating the hollow block and extending above the hollow block and fixedly connected to a gear, the outer surface of the gear meshing with the outer surface of the toothed plate, an L-shaped plate located in front of the gear movably connected to the outer surface of the toothed plate, and the lower surface of the L-shaped plate fixedly connected to the upper surface of the hollow block.

[0006] As a preferred technical solution of this utility model, the upper surface of the toothed plate is movably connected to a first fixing plate located on the left side of the L-shaped plate, and the right side of the upper surface of the hollow block is fixedly connected to a second fixing plate located on the right side of the winding post. The left surface of the second fixing plate and the right surface of the winding post are movably connected. Long rods are fixedly connected to both the front and rear sides of the right surface of the first fixing plate. The right end of the long rod passes through the connecting block and extends to the left surface of the second fixing plate and is fixedly connected to the second fixing plate.

[0007] As a preferred embodiment of this utility model, a drive motor is fixedly installed on the right surface of the second fixing plate, and a rotating shaft is fixedly sleeved at the other end of the output shaft of the drive motor. The left end of the rotating shaft passes through the second fixing plate and the winding post in sequence and extends to the left surface of the winding post. The outer surface of the rotating shaft and the inner surface of the winding post are fixedly sleeved. A connecting plate is movably connected to the left surface of the second fixing plate, and a second rotating disk is fixedly connected to the left surface of the connecting plate. The inner surface of the second rotating disk is movably connected to the right side of the outer surface of the winding post. A connecting plate is movably connected to the lower side of the outer surface of the connecting plate, and the lower surface of the connecting plate is movably connected to the upper surface of the hollow block.

[0008] As a preferred embodiment of this utility model, a movable groove is provided on the outer surface of the winding post, and a second movable block is movably connected to the left side of the inner surface of the movable groove. The outer surface of the second movable block is fixedly connected to the inner surface of the first rotating disk. A first movable block is movably connected to the right side of the inner surface of the movable groove. The outer surface of the first movable block is fixedly connected to the inner surface of the second rotating disk. A ring is fixedly connected to the left surface of the first rotating disk, and the outer surface of the ring is movably connected to the inner surface of the connecting block.

[0009] As a preferred technical solution of this utility model, limiting grooves are provided on both the front and rear sides of the upper surface of the hollow block. A U-shaped frame is movably connected to the right side of the inner surface of the limiting groove. The upper surface of the U-shaped frame is fixedly connected to the lower surface of the connecting plate. A crossbar is fixedly connected to the left side of the inner surface of the limiting groove. The right end of the crossbar passes through the U-shaped frame and extends to the right side of the inner surface of the limiting groove. The outer surface of the crossbar and the inner surface of the U-shaped frame are movably sleeved.

[0010] As a preferred embodiment of this utility model, a fixing block located on the right side of the U-shaped frame is fixedly connected to both the front and rear sides of the top of the inner surface of the hollow block. A second motor is fixedly installed on the front surface of the fixing block. A double-threaded rod is fixedly sleeved at the other end of the output shaft of the second motor. The rear end of the double-threaded rod passes through the fixing block and extends to the rear surface of the fixing block. Two hinge blocks are threadedly sleeved on both the front and rear sides of the outer surface of the double-threaded rod. A limiting rod located on the right side of the double-threaded rod is fixedly connected to the front surface of the fixing block. The rear end of the limiting rod passes through the fixing block and the hinge block in sequence and extends to the rear surface of the fixing block. The outer surface of the limiting rod and the inner surface of the hinge block are movably sleeved.

[0011] As a preferred embodiment of this utility model, a first connecting rod is hinged to the left surface of the hinge block, a second connecting rod is hinged to the left end of the first connecting rod, a third connecting rod is hinged to the other end of the second connecting rod, a fourth connecting rod is hinged to the other end of the third connecting rod, and the other end of the fourth connecting rod is hinged to the lower surface of the U-shaped frame.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model, by setting up a connecting block, a first rotating disk, a toothed plate, a round shaft, and a gear, allows the round shaft and gear to start rotating when the first motor starts running. Since the gear and toothed plate mesh with each other, the toothed plate and the connecting block as a whole will start to move left and right along the outer surface of the winding post under the drive of the gear. During this process, the distance between the first rotating disk and the second rotating disk will change, thereby facilitating the production of boneless coils of different lengths.

[0014] 2. This utility model, by setting up a connecting plate, a first connecting rod, a second connecting rod, a third connecting rod, and a fourth connecting rod, allows the double-threaded rod to rotate when the operator starts the second motor, causing the two hinge blocks to move towards each other. At this time, the first connecting rod will rotate, and the second connecting rod will rotate along with the first connecting rod. Similarly, the third and fourth connecting rods will also start to rotate. At this time, the other end of the fourth connecting rod will drive the hinge block, thereby causing the hinge block, the connecting plate, the connecting plate, and the second rotating plate to move to the left as a whole. Finally, the boneless coil wound on the outer surface of the winding post will be pushed out to the left side of the winding post by the second rotating plate, thus achieving the function of automatically pushing out the finished boneless coil. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0017] Figure 3 This is a cross-sectional view of the U-shaped frame of this utility model;

[0018] Figure 4 This is a cross-sectional structural diagram of the crossbar of this utility model;

[0019] Figure 5 This is a cross-sectional structural diagram of the hollow block of this utility model;

[0020] Figure 6 This is a cross-sectional view of the circular shaft of this utility model.

[0021] In the diagram: 1. Base plate; 2. Hollow block; 3. Connecting block; 4. Rotating disk No. 1; 5. Gear plate; 6. Motor No. 1; 7. Round shaft; 8. Gear; 9. L-shaped plate; 10. Fixed plate No. 1; 11. Fixed plate No. 2; 12. Long rod; 13. Drive motor; 14. Rotating shaft; 15. Winding post; 16. Moving groove; 17. Rotating disk No. 2; 18. Moving block No. 1; 19. Connecting disk; 20. Connecting plate; 21. Ring; 22. Moving block No. 2; 23. U-shaped frame; 24. Crossbar; 25. Fixed block; 26. Motor No. 2; 27. Double-threaded rod; 28. Hinge block; 29. ​​Limiting rod; 30. Connecting rod No. 1; 31. Connecting rod No. 2; 32. Connecting rod No. 3; 33. Connecting rod No. 4; 34. Limiting groove. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model. The preferred embodiments of this utility model will now be described in more detail with reference to the accompanying drawings. Although the preferred embodiments of this utility model are shown in the drawings, it should be understood that this utility model can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make this utility model more thorough and complete, and to fully convey the scope of this utility model to those skilled in the art.

[0023] The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular forms “a,” “the,” and “the” used in this invention and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0024] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0025] In the description of this utility model, it should be understood that the terms "thickness", "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] It should be understood that although the terms "first," "second," "third," etc., may be used to describe various components in this invention, this information should not be limited to these terms. These terms are only used to distinguish components of the same type from each other. For example, without departing from the scope of this invention, a first component may also be referred to as a second component, and similarly, a second component may also be referred to as a first component. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0028] like Figures 1 to 6As shown, this utility model provides a frameless transformer winding device, including a base plate 1, a hollow block 2 fixedly connected to the upper surface of the base plate 1, a connecting block 3 movably connected to the middle of the upper surface of the hollow block 2, a first rotating disk 4 movably connected to the inner surface of the connecting block 3, a winding post 15 movably connected to the inner surface of the first rotating disk 4, a toothed plate 5 fixedly connected to the left surface of the connecting block 3, the lower surface of the toothed plate 5 movably connected to the upper surface of the hollow block 2, a first motor 6 fixedly installed on the left side of the top of the inner surface of the hollow block 2, a round shaft 7 fixedly sleeved at the other end of the output shaft of the first motor 6, the top end of the outer surface of the round shaft 7 penetrating the hollow block 2 and extending above the hollow block 2 and fixedly connected to a gear 8, the outer surface of the gear 8 meshing with the outer surface of the toothed plate 5, an L-shaped plate 9 located in front of the gear 8 movably connected to the outer surface of the toothed plate 5, and the lower surface of the L-shaped plate 9 fixedly connected to the upper surface of the hollow block 2.

[0029] When the operator starts motor 6, the round shaft 7 and gear 8 will start to rotate. At this time, the rotation of gear 8 will drive the toothed plate 5, which will cause the toothed plate 5 and the connecting block 3 to move left and right as a whole. The design of the L-shaped plate 9 plays a protective role for the toothed plate 5.

[0030] Among them, the upper surface of the toothed plate 5 is movably connected to the first fixing plate 10 located on the left side of the L-shaped plate 9, and the right side of the upper surface of the hollow block 2 is fixedly connected to the second fixing plate 11 located on the right side of the winding post 15. The left surface of the second fixing plate 11 and the right surface of the winding post 15 are movably connected. The front and rear sides of the right surface of the first fixing plate 10 are fixedly connected to long rods 12. The right end of the long rod 12 passes through the connecting block 3 and extends to the left surface of the second fixing plate 11 and is fixedly connected to the second fixing plate 11.

[0031] When the connecting block 3 begins to move as a whole, the design of the long rod 12 restricts the overall movement direction of the connecting block 3, thereby ensuring that the inner surface of the first rotating disk 4 can always be aligned with the outer surface of the winding post 15.

[0032] Among them, a drive motor 13 is fixedly installed on the right surface of the second fixing plate 11. The other end of the output shaft of the drive motor 13 is fixedly sleeved with a rotating shaft 14. The left end of the rotating shaft 14 passes through the second fixing plate 11 and the winding post 15 in sequence and extends to the left surface of the winding post 15. The outer surface of the rotating shaft 14 and the inner surface of the winding post 15 are fixedly sleeved. A connecting plate 19 is movably connected to the left surface of the second fixing plate 11. A second rotating plate 17 is fixedly connected to the left surface of the connecting plate 19. The inner surface of the second rotating plate 17 is movably connected to the right side of the outer surface of the winding post 15. A connecting plate 20 is movably connected to the lower side of the outer surface of the connecting plate 19. The lower surface of the connecting plate 20 is movably connected to the upper surface of the hollow block 2.

[0033] The design of the connecting disc 19 and the second rotating disc 17 allows the second rotating disc 17 and the connecting disc 19 to move to the left along the outer surface of the winding post 15. When the drive motor 13 is started, the rotating shaft 14 and the winding post 15 as a whole will start to rotate.

[0034] The outer surface of the winding post 15 is provided with a movable groove 16. The left side of the inner surface of the movable groove 16 is movably connected to a second movable block 22. The outer surface of the second movable block 22 is fixedly connected to the inner surface of the first rotating disk 4. The right side of the inner surface of the movable groove 16 is movably connected to a first movable block 18. The outer surface of the first movable block 18 is fixedly connected to the inner surface of the second rotating disk 17. The left surface of the first rotating disk 4 is fixedly connected to a ring 21. The outer surface of the ring 21 is movably connected to the inner surface of the connecting block 3.

[0035] The design of the moving groove 16, the second moving block 22 and the first moving block 18 makes the first rotating disk 4 and the second rotating disk 17 rotate together with the winding post 15. The design of the ring 21 ensures that the first rotating disk 4 will not detach from the inner surface of the connecting block 3 when rotating.

[0036] In this case, limit grooves 34 are provided on both the front and rear sides of the upper surface of the hollow block 2. A U-shaped frame 23 is movably connected to the right side of the inner surface of the limit groove 34. The upper surface of the U-shaped frame 23 is fixedly connected to the lower surface of the connecting plate 20. A crossbar 24 is fixedly connected to the left side of the inner surface of the limit groove 34. The right end of the crossbar 24 passes through the U-shaped frame 23 and extends to the right side of the inner surface of the limit groove 34. The outer surface of the crossbar 24 and the inner surface of the U-shaped frame 23 are movably sleeved.

[0037] The design of the U-shaped frame 23 restricts the overall movement range of the connecting plate 20, while the design of the crossbar 24 ensures the stability of the U-shaped frame 23 and the connecting plate 20 as a whole during movement.

[0038] Among them, the front and rear sides of the top of the inner surface of the hollow block 2 are fixedly connected to the fixing block 25 located on the right side of the U-shaped frame 23. The front surface of the fixing block 25 is fixedly installed with the second motor 26. The other end of the output shaft of the second motor 26 is fixedly sleeved with the double threaded rod 27. The rear end of the double threaded rod 27 passes through the fixing block 25 and extends to the rear surface of the fixing block 25. The front and rear sides of the outer surface of the double threaded rod 27 are threadedly sleeved with the hinge block 28. There are two hinge blocks 28. The front surface of the fixing block 25 is fixedly connected to the limiting rod 29 located on the right side of the double threaded rod 27. The rear end of the limiting rod 29 passes through the fixing block 25 and the hinge block 28 in sequence and extends to the rear surface of the fixing block 25. The outer surface of the limiting rod 29 and the inner surface of the hinge block 28 are movably sleeved.

[0039] When the operator starts the second motor 26, the double-threaded rod 27 will start to rotate. At this time, the two hinge blocks 28 will start to move towards and away from each other. The design of the limit rod 29 restricts the movement direction of the two hinge blocks 28.

[0040] Among them, the left surface of the hinge block 28 is hinged to the first connecting rod 30, the left end of the first connecting rod 30 is hinged to the second connecting rod 31, the other end of the second connecting rod 31 is hinged to the third connecting rod 32, the other end of the third connecting rod 32 is hinged to the fourth connecting rod 33, and the other end of the fourth connecting rod 33 is hinged to the lower surface of the U-shaped frame 23.

[0041] When the hinge block 28 moves, the first link 30 will start to rotate under the drive of the hinge block 28. At the same time, the second link 31, the third link 32 and the fourth link 33 will also rotate, and the U-shaped frame 23 as a whole will start to move to the left under the drive of the left end of the fourth link 33.

[0042] Working principle and usage process of this utility model:

[0043] First, the operator starts motor 6. As motor 6 runs, the shaft 7 and gear 8 will start to rotate. Since the outer surface of gear 8 and the outer surface of gear plate 5 mesh with each other, the rotation of gear 8 will drive gear plate 5, thereby causing gear plate 5 and connecting block 3 to move to the right as a whole until the distance between rotating disk 4 and rotating disk 17 meets the operator's production needs.

[0044] After the boneless coil production is completed, the operator first starts motor 6 to make connecting block 3 contact gear 8. Then the operator starts motor 26. As motor 26 runs, double threaded rod 27 will start to rotate, causing the two hinge blocks 28 to move. At this time, connecting rod 30 will rotate with the movement of hinge block 28. At the same time, connecting rod 31 will also rotate with the rotation of connecting rod 30. Similarly, connecting rod 32 and connecting rod 33 will also start to rotate. Finally, hinge block 28 will be driven by the left end of connecting rod 33. This causes hinge block 28, connecting plate 20, connecting disc 19 and rotating disc 17 to move to the left as a whole. Finally, the boneless coil wound on the outer surface of winding post 15 will be pushed out to the left side of winding post 15 by rotating disc 17, thus completing the automatic unloading of the boneless coil.

[0045] The present invention has been described in detail above with reference to the accompanying drawings. In the above embodiments, the descriptions of each embodiment have different focuses; for parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments. Those skilled in the art should also understand that the actions and modules involved in the specification are not necessarily essential to the present invention. Furthermore, it is understood that the steps in the method of the present invention embodiments can be adjusted, combined, and deleted according to actual needs, and the structure in the device of the present invention embodiments can be combined, divided, and deleted according to actual needs.

[0046] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A frameless transformer winding device, comprising a base plate (1), characterized in that: A hollow block (2) is fixedly connected to the upper surface of the base plate (1). A connecting block (3) is movably connected to the middle of the upper surface of the hollow block (2). A first rotating disk (4) is movably connected to the inner surface of the connecting block (3). A winding post (15) is movably connected to the inner surface of the first rotating disk (4). A toothed plate (5) is fixedly connected to the left surface of the connecting block (3). The lower surface of the toothed plate (5) is movably connected to the upper surface of the hollow block (2). The left side of the top of the inner surface of the hollow block (2) is fixed. A No. 1 motor (6) is installed. A round shaft (7) is fixedly sleeved on the other end of the output shaft of the No. 1 motor (6). The top end of the outer surface of the round shaft (7) passes through the hollow block (2) and extends to the top of the hollow block (2) and is fixedly connected to a gear (8). The outer surface of the gear (8) meshes with the outer surface of the gear plate (5). An L-shaped plate (9) located in front of the gear (8) is movably connected to the outer surface of the gear plate (5). The lower surface of the L-shaped plate (9) is fixedly connected to the upper surface of the hollow block (2).

2. The frameless transformer winding device according to claim 1, characterized in that: The upper surface of the toothed plate (5) is movably connected to a first fixing plate (10) located on the left side of the L-shaped plate (9). The right side of the upper surface of the hollow block (2) is fixedly connected to a second fixing plate (11) located on the right side of the winding post (15). The left surface of the second fixing plate (11) and the right surface of the winding post (15) are movably connected. Long rods (12) are fixedly connected to both the front and rear sides of the right surface of the first fixing plate (10). The right end of the long rod (12) passes through the connecting block (3) and extends to the left surface of the second fixing plate (11) and is fixedly connected to the second fixing plate (11).

3. The frameless transformer winding device according to claim 2, characterized in that: A drive motor (13) is fixedly installed on the right surface of the second fixing plate (11). A rotating shaft (14) is fixedly sleeved at the other end of the output shaft of the drive motor (13). The left end of the rotating shaft (14) passes through the second fixing plate (11) and the winding post (15) in sequence and extends to the left surface of the winding post (15). The outer surface of the rotating shaft (14) and the inner surface of the winding post (15) are fixedly sleeved. A connecting plate (19) is movably connected to the left surface of the second fixing plate (11). A second rotating plate (17) is fixedly connected to the left surface of the connecting plate (19). The inner surface of the second rotating plate (17) is movably connected to the right side of the outer surface of the winding post (15). A connecting plate (20) is movably connected to the lower side of the outer surface of the connecting plate (19). The lower surface of the connecting plate (20) is movably connected to the upper surface of the hollow block (2).

4. The frameless transformer winding device according to claim 1, characterized in that: The outer surface of the winding post (15) is provided with a moving groove (16). A second moving block (22) is movably connected to the left side of the inner surface of the moving groove (16). The outer surface of the second moving block (22) is fixedly connected to the inner surface of the first rotating disk (4). A first moving block (18) is movably connected to the right side of the inner surface of the moving groove (16). The outer surface of the first moving block (18) is fixedly connected to the inner surface of the second rotating disk (17). A ring (21) is fixedly connected to the left surface of the first rotating disk (4). The outer surface of the ring (21) is movably connected to the inner surface of the connecting block (3).

5. The frameless transformer winding device according to claim 1, characterized in that: Limiting grooves (34) are provided on both the front and rear sides of the upper surface of the hollow block (2). A U-shaped frame (23) is movably connected to the right side of the inner surface of the limiting groove (34). The upper surface of the U-shaped frame (23) is fixedly connected to the lower surface of the connecting plate (20). A crossbar (24) is fixedly connected to the left side of the inner surface of the limiting groove (34). The right end of the crossbar (24) passes through the U-shaped frame (23) and extends to the right side of the inner surface of the limiting groove (34). The outer surface of the crossbar (24) and the inner surface of the U-shaped frame (23) are movably sleeved.

6. The frameless transformer winding device according to claim 1, characterized in that: The hollow block (2) has a fixed block (25) fixedly connected to the front and rear sides of the top of the inner surface of the top of the hollow block (2), which is located on the right side of the U-shaped frame (23). The front surface of the fixed block (25) is fixedly mounted with a second motor (26). The other end of the output shaft of the second motor (26) is fixedly sleeved with a double-threaded rod (27). The rear end of the double-threaded rod (27) passes through the fixed block (25) and extends to the rear surface of the fixed block (25). The front and rear sides of the outer surface of the double-threaded rod (27) are threaded with hinge blocks (28). There are two hinge blocks (28). The front surface of the fixed block (25) is fixedly connected with a limiting rod (29) located on the right side of the double-threaded rod (27). The rear end of the limiting rod (29) passes through the fixed block (25) and the hinge block (28) in sequence and extends to the rear surface of the fixed block (25). The outer surface of the limiting rod (29) and the inner surface of the hinge block (28) are movably sleeved.

7. A frameless transformer winding device according to claim 6, characterized in that: The left surface of the hinge block (28) is hinged to a first connecting rod (30), the left end of the first connecting rod (30) is hinged to a second connecting rod (31), the other end of the second connecting rod (31) is hinged to a third connecting rod (32), the other end of the third connecting rod (32) is hinged to a fourth connecting rod (33), and the other end of the fourth connecting rod (33) is hinged to the lower surface of the U-shaped frame (23).

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