Winding gear of three-dimensional wound core transformer
By designing a starting groove and a fixing plate on the winding gear of a three-dimensional wound core transformer, the problem of coil starting end offset or loosening is solved, the coil winding quality is improved and the transformer forming quality is enhanced.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-27
- Publication Date
- 2026-03-03
AI Technical Summary
The coils of existing three-dimensional wound core transformers lack effective fixation during the winding process, which makes the starting end prone to offset or loosening, affecting the winding quality and potentially causing faults such as coil scattering and short circuits.
Design a three-dimensional winding gear for a core transformer, including a track ring, a fixed ring, a gear ring, and a fixed pressure plate. By opening a starting groove on the gear ring and setting the fixed pressure plate, the fixed pressure plate cooperates with the starting groove to press the starting end of the coil into the winding space, ensuring the stability of the coil during the winding process.
This improved the quality of coil winding, prevented coil shifting and loosening during the winding process, and ensured the forming quality of the three-dimensional wound core transformer.
Smart Images
Figure CN223967114U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of winding equipment technology, and in particular to a three-dimensional winding gear for a core transformer. Background Technology
[0002] The winding gear is one of the key components in the manufacturing process of three-dimensional wound core transformers. Its main function is to provide stable support and guidance for the winding of the coil, ensuring that the coil is wound evenly, tightly, and orderly onto the insulating cylinder. However, in existing three-dimensional wound core transformers, the starting end of the coil lacks effective fixation during the winding process, making it prone to offset or loosening. This leads to a decrease in the overall winding quality of the coil, and may even result in coil scattering, short circuits, and other faults, thus affecting the overall quality of the three-dimensional wound core transformer. Utility Model Content
[0003] The main purpose of this invention is to propose a three-dimensional wound core transformer winding gear, which aims to solve the technical problem that the coils of three-dimensional wound core transformers lack effective fixation, resulting in a decrease in the winding quality of the coils.
[0004] To achieve the above objectives, the three-dimensional wound core transformer winding gear proposed in this utility model includes a track ring, a fixed ring, a gear ring, and a fixed pressure plate. The track ring is circular. The fixed ring is stacked and connected to the track ring, and is used to connect the core of the three-dimensional wound core transformer. The gear ring is rotatably sleeved on the track ring. The gear ring forms a first annular surface on the side away from the fixed ring along its thickness direction. The first annular surface has a starting groove recessed towards the fixed ring. The starting groove extends radially from the inner edge of the gear ring to the outer edge of the gear ring. The fixed pressure plate is disposed in the starting groove and forms a threading space for the coil to pass through between the plate and the groove wall of the starting groove.
[0005] In one embodiment, the inner edge of the gear ring protrudes from the first annular surface in a direction away from the fixed ring to form a support ring, which is used to be fitted inside the insulating cylinder of the three-dimensional wound core transformer.
[0006] In one embodiment, the two ends of the fixed pressure plate abut against the two side groove walls of the starting groove respectively, and the wire threading space is formed between the fixed pressure plate and the bottom groove wall of the starting groove. The fixed pressure plate has a wire passing hole on the side facing the inner edge of the gear ring that communicates with the wire threading space.
[0007] In one embodiment, two opposing limiting posts are installed on the support ring, each of the limiting posts extending radially outward along the support ring to engage with a limiting groove on the inner wall of the insulating cylinder.
[0008] In one embodiment, the side of the fixed pressure plate opposite to the starting groove is flush with the first annular surface, and the fixed pressure plate is fastened to the gear ring by fasteners.
[0009] In one embodiment, the depth of the starting groove is half the thickness of the gear ring.
[0010] In one embodiment, the first annular surface is further provided with two tail grooves that are recessed toward the fixing ring. The two tail grooves and the starting groove are evenly distributed at intervals on the first annular surface, and each tail groove extends from the outer edge of the gear ring toward the inner edge.
[0011] In one embodiment, each of the tail grooves includes a groove opening and a groove bottom connected sequentially along the radial direction of the gear ring, wherein the groove opening is formed on the side away from the groove bottom, the opening side is located on the outer edge of the gear ring, the groove bottom is on the side away from the groove opening, the closing side is close to the inner edge of the gear ring, and the groove opening is gradually narrowed from the opening side to the closing side.
[0012] In one embodiment, both the gear ring and the track ring are formed by splicing two semi-circular rings.
[0013] In one embodiment, the fixing ring is bolted to the track ring, and the fixing ring has a fixing threaded hole that passes through the fixing ring in the radial direction.
[0014] The three-dimensional wound core transformer winding gear proposed in this utility model has a gear ring rotatably fitted onto a track ring. The track ring provides stable support and guidance for the rotation of the gear ring, ensuring stable rotation during coil winding. By creating a starting groove in the gear ring and installing a fixing plate within the starting groove, the fixing plate cooperates with the starting groove to press the starting end of the coil firmly within the threading space, keeping the starting end of the coil fixed during winding. This solves the problem of coil starting end offset or loosening, ensuring stability during coil winding, improving coil winding quality, and preventing coil scattering, short circuits, and other faults, thereby improving the forming quality of the three-dimensional wound core transformer. Attached Figure Description
[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.
[0016] Figure 1 A side view of an embodiment of the three-dimensional wound core transformer winding gear provided by this utility model;
[0017] Figure 2 A schematic diagram of the structure of the first annular surface of an embodiment of the three-dimensional wound core transformer winding gear provided by this utility model;
[0018] Figure 3 A schematic diagram of the structure of a fixing ring for a three-dimensional wound core transformer winding gear provided by this utility model;
[0019] Figure 4 This is a schematic diagram of a structure of a fixing plate for a three-dimensional wound core transformer winding gear provided by this utility model.
[0020] Explanation of icon numbers:
[0021] 10. Track ring; 20. Fixing ring; 21. Fixing threaded hole; 30. Gear ring; 31. First annular surface; 32. Starting groove; 33. Ending groove; 331. Groove opening; 3311. Opening side; 332. Groove bottom; 3321. Closed side; 34. Support ring; 341. Limiting post; 40. Fixing pressure plate; 41. Wire passage hole.
[0022] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.
[0024] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.
[0025] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.
[0026] In the winding process of existing three-dimensional wound core transformers, the starting end of the coil is not effectively fixed, which makes it easy for the starting end to shift or loosen. This leads to a decrease in the winding quality of the entire coil, and may even cause faults such as coil scattering and short circuits, thus affecting the forming quality of the three-dimensional wound core transformer.
[0027] This utility model proposes a three-dimensional wound core transformer winding gear, including a track ring 10, a fixed ring 20, a gear ring 30, and a fixed pressure plate 40. The track ring 10 is circular, and the fixed ring 20 is stacked and connected to the track ring 10. The fixed ring 20 is used to connect the core of the three-dimensional wound core transformer. The gear ring 30 is rotatably sleeved on the track ring 10. The gear ring 30 forms a first annular surface 31 on the side away from the fixed ring 20 along its thickness direction. The first annular surface 31 has a starting groove 32 that is recessed towards the fixed ring 20. The starting groove 32 extends radially from the inner edge of the gear ring 30 to the outer edge of the gear ring 30. The fixed pressure plate 40 is disposed in the starting groove 32 and forms a threading space for the coil to pass through between the plate and the groove wall of the starting groove 32.
[0028] Please see Figure 1 and Figure 2 The track ring 10, fixed ring 20, and gear ring 30 are coaxially arranged. When the gear ring 30 rotates around the track ring 10, the track ring 10 and fixed ring 20 remain relatively fixed to the insulating cylinder, and the track ring 10 provides stable rotational guidance for the gear ring 30. When performing the winding operation of the three-dimensional wound core transformer, the core of the three-dimensional wound core transformer is first connected to the fixed ring 20. Then, the starting end of the coil is introduced into the starting slot 32. The fixed pressure plate 40 cooperates with the slot wall of the starting slot 32 to press the starting end of the coil into the winding space. Finally, the gear ring 30 is driven to rotate around the track ring 10, and the winding operation is achieved by the gear ring 30 driving the coil.
[0029] The three-dimensional wound core transformer winding gear proposed in this utility model has a gear ring 30 rotatably fitted onto a track ring 10. The track ring 10 provides stable support and guidance for the rotation of the gear ring 30, ensuring stable rotation of the gear ring 30 during coil winding. By creating a starting groove 32 in the gear ring 30 and installing a fixing plate 40 within the starting groove 32, the fixing plate 40 cooperates with the starting groove 32 to press the starting end of the coil firmly within the threading space, keeping the starting end of the coil fixed during winding. This solves the problem of coil starting end offset or loosening, ensuring stability during coil winding, improving coil winding quality, and preventing coil scattering, short circuits, and other faults, thereby improving the forming quality of the three-dimensional wound core transformer.
[0030] In one embodiment, the inner edge of the gear ring 30 protrudes from the first annular surface 31 toward the direction away from the fixed ring 20 to form a support ring 34, which is used to be fitted inside the insulating cylinder of the three-dimensional wound core transformer.
[0031] Please continue reading. Figure 1 The support ring 34 extends from the inner edge of the gear ring 30 in a direction away from the fixed ring 20. The insulating cylinder can be fitted over the support ring 34 so that the inner wall of the insulating cylinder contacts the outer wall of the support ring 34, and the end of the insulating cylinder can abut against the first annular surface 31. When the coil is wound on the insulating cylinder, the support ring 34 can provide support for the cylinder wall. The setting of the support ring 34 not only improves the connection stability between the winding gear and the insulating cylinder, but also improves the load-bearing capacity of the insulating cylinder for the coil wound on it.
[0032] In one embodiment, the two ends of the fixed pressure plate 40 abut against the two side groove walls of the starting groove 32 respectively, and a threading space is formed between the fixed pressure plate 40 and the bottom groove wall of the starting groove 32. A threading hole 41 communicating with the threading space is opened on the side of the fixed pressure plate 40 facing the inner edge of the gear ring 30.
[0033] Please see Figure 2 and Figure 4 When winding a three-dimensional wound core transformer, the starting end of the coil first passes through the wire-passing hole 41, then extends within the wire-passing space and is tightly clamped by the fixing plate 40 and the bottom wall of the starting groove 32. The two ends of the fixing plate 40 are in close contact with the side walls of the starting groove 32, ensuring stable installation of the fixing plate 40 within the starting groove 32 and preventing displacement or loosening of the fixing plate 40 during winding. The wire-passing hole 41 allows the starting end of the coil to smoothly enter the wire-passing space and maintains a smooth wire path within the space, preventing twisting or offset of the starting end of the coil during introduction.
[0034] In one embodiment, two opposing limiting posts 341 are installed on the support ring 34, each limiting post 341 extending radially outward along the support ring 34 to engage with the limiting groove on the inner wall of the insulating cylinder.
[0035] Please see Figure 2 Two limiting posts 341 are positioned opposite each other on the outer wall of the support ring 34. When the insulating cylinder is sleeved on the outside of the support ring 34, the two limiting posts 341 respectively engage with the limiting grooves on the inner wall of the insulating cylinder, thereby preventing relative rotation between the insulating cylinder and the support ring 34 and further improving the connection stability between the insulating cylinder and the support ring 34. In addition, the two limiting posts 341 can apply a pair of opposite supporting forces to the inner wall of the insulating cylinder, further improving the load-bearing capacity of the insulating cylinder and enabling the insulating cylinder to wind more coils. Therefore, the winding gear proposed in this utility model is suitable for large-capacity three-dimensional wound core transformers.
[0036] In one embodiment, the side of the fixed pressure plate 40 facing away from the starting groove 32 is flush with the first annular surface 31, and the fixed pressure plate 40 is fastened to the gear ring 30 by fasteners.
[0037] It should be noted that the thickness of the fixing plate 40 can be flexibly set according to the actual diameter of the coil. When the side of the fixing plate 40 facing the starting groove 32 presses the wire harness into the threading space, the side of the fixing plate 40 facing away from the starting groove 32 is flush with the first annular surface 31, avoiding interference of the fixing plate 40 with the coil winding. Fasteners are inserted through the gear ring 30 and the fixing plate 40 to secure the fixing plate 40 in the starting groove 32, ensuring that the fixing plate 40 applies sufficient tightening force to the coil, thereby firmly pressing the starting end of the coil into the threading space and ensuring the winding quality of the coil.
[0038] In one embodiment, the depth of the starting groove 32 is half the thickness of the gear ring 30.
[0039] Furthermore, by setting the depth of the starting groove 32 to half the thickness of the gear ring 30, the starting groove 32 has a certain depth, ensuring that the starting end of the coil can be firmly fixed within the starting groove 32 under the action of the fixing plate 40. This prevents the starting end of the coil from being pulled out during winding due to the starting groove 32 being too shallow, or from twisting within the groove due to the starting groove 32 being too deep. At the same time, the depth of the starting groove 32 is not too large, thus not affecting the structural strength of the gear ring 30, allowing the gear ring 30 to rotate stably.
[0040] In one embodiment, the first annular surface 31 is further provided with two tail grooves 33 that are recessed toward the fixed ring 20. The two tail grooves 33 and the starting groove 32 are evenly distributed at intervals on the first annular surface 31, and each tail groove 33 extends from the outer edge of the gear ring 30 toward the inner edge.
[0041] Understandably, each tail groove 33 is recessed into the gear ring 30 from the first annular surface 31. The tail groove 33 provides space to accommodate the end of the coil, thereby reducing the space occupied by the coil end and thus reducing the coil winding size. The center lines of the two tail grooves 33 and the center line of the starting groove 32 are both distributed at 120° on the first annular surface 31, so that the coil can be evenly distributed on the winding gear during the winding process, ensuring uniform coil winding and improving the winding quality of the coil.
[0042] In one embodiment, each tail groove 33 includes a groove opening portion 331 and a groove bottom 332 connected sequentially along the radial direction of the gear ring 30. The groove opening portion 331 forms an open side 3311 on the side away from the groove bottom 332, and the open side 3311 is located at the outer edge of the gear ring 30. The side of the groove bottom 332 away from the groove opening portion 331 is a closed side 3321, and the closed side 3321 is close to the inner edge of the gear ring 30. The groove opening portion 331 is gradually narrowed from the open side 3311 to the closed side 3321.
[0043] Please see Figure 2 During the winding operation of a three-dimensional wound core transformer, the end of the coil is introduced from the outer edge of the gear ring 30 into the open side 3311 of the tail slot 33. It first passes through the slot opening 331. Since the slot opening 331 gradually narrows from the open side 3311 to the closed side 3321, the end of the coil, guided by the slot opening 331, approaches the bottom 332 of the slot and finally reaches the closed side 3321. The tapered slot opening 331 effectively guides the end of the coil to accurately enter the tail slot 33. The bottom 332 of the slot forms the closed side 3321, providing a space for the end of the coil and preventing it from coming out of the tail slot 33 during winding.
[0044] In one embodiment, both the gear ring 30 and the track ring 10 are formed by splicing two semi-circular rings.
[0045] Understandably, both the gear ring 30 and the track ring 10 are formed by splicing two semicircular rings. The two semicircular rings can be quickly assembled using bolts, clips, and other connecting parts, which facilitates quick assembly and disassembly.
[0046] In one embodiment, the fixing ring 20 is bolted to the track ring 10, and the fixing ring 20 has a fixing threaded hole 21 that passes through the fixing ring 20 in the radial direction.
[0047] Please see Figure 3The fixing ring 20 is semi-circular and is bolted to the track ring 10. This facilitates assembly and disassembly while ensuring a secure connection between the fixing ring 20 and the track ring 10, thereby guaranteeing a stable connection between both the fixing ring 20 and the track ring 10 and the insulating cylinder. The fixing ring 20 has radially formed threaded holes 21 for connecting to the transformer core. This ensures a secure connection between the fixing ring 20 and the transformer core during coil winding, thus improving the coil winding quality.
[0048] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.
Claims
1. A three-dimensional wound core transformer winding gear, characterized by, The utility model relates to a three-dimensional wound core transformer fixed ring and gear ring, including: A track ring in the shape of a torus; A fixed ring laminatedly connected to the track ring, used for connecting the core of the three-dimensional wound core transformer; A gear ring rotatably sleeved outside the track ring, a first annular surface being formed on the side of the gear ring away from the fixed ring along the thickness direction of the gear ring, a start groove recessed towards the fixed ring being formed on the first annular surface, the start groove extending through the inner edge of the gear ring to the outer edge of the gear ring along the radial direction; A fixed pressing plate arranged in the start groove and forming a threading space for the coil to pass through between the fixed pressing plate and the groove wall of the start groove.
2. The three-dimensional volume core transformer winding gear according to claim 1, wherein, The inner edge of the gear ring protrudes to form a support ring in the direction away from the fixed ring, the support ring being used for sleeving in the insulation cylinder of the three-dimensional wound core transformer.
3. The three-dimensional volume core transformer winding gear according to claim 2, wherein The two ends of the fixed pressing plate respectively abut against the two side groove walls of the start groove oppositely arranged, the threading space being formed between the fixed pressing plate and the bottom groove wall of the start groove, a wire passing hole being formed on the side of the fixed pressing plate towards the inner edge of the gear ring and being in communication with the threading space.
4. The three-dimensional volume core transformer winding gear according to claim 2, wherein Two limit columns oppositely arranged are mounted on the support ring, each limit column extending outward along the radial direction of the support ring to be insertedly matched with the limit groove of the inner wall of the insulation cylinder.
5. The three-dimensional volume core transformer winding gear according to claim 1, wherein The side of the fixed pressing plate away from the start groove is flush with the first annular surface, and the fixed pressing plate is fastened to the gear ring through a fastener.
6. The three-dimensional volume core transformer winding gear according to claim 5, wherein The depth of the start groove is half the thickness of the gear ring.
7. The three-dimensional volume core transformer winding gear according to any one of claims 1 to 6, characterized in that The first annular surface further forms two tail grooves recessed towards the fixed ring, the two tail grooves and the start groove being uniformly distributed at intervals on the first annular surface, and each tail groove extending from the outer edge of the gear ring to the inner edge.
8. The three-dimensional volume core transformer winding gear according to claim 7, wherein Each tail groove includes a slot opening part and a slot bottom part in sequence along the radial direction of the gear ring, wherein the side of the slot opening part away from the slot bottom part forms an opening side, the opening side being located at the outer edge of the gear ring, the side of the slot bottom part away from the slot opening part being a closed side, the closed side being close to the inner edge of the gear ring, and the slot opening part being tapered from the opening side to the closed side.
9. The three-dimensional volume core transformer winding gear according to any one of claims 1 to 6, characterized in that The gear ring and the track ring are both formed by splicing two semicircular rings.
10. The three-dimensional volume core transformer winding gear according to any one of claims 1 to 6, characterized in that The fixed ring and the track ring are bolted, and the fixed ring is provided with a fixed threaded hole extending through the fixed ring along the radial direction.