A transformer skeleton winding jig
By designing a winding fixture with a support plate, a U-shaped frame, and a reset rod, the problems of loosening and falling off the winding shaft were solved, achieving winding stability and safety, and ensuring the flatness and safety of the winding.
Patent Information
- Application Number
- CN202521366529.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-01
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-07-01
AI Technical Summary
The existing transformer bobbin winding fixture lacks a clamping and limiting device, which makes it easy for the winding shaft and bobbin to loosen during assembly, resulting in uneven winding. Furthermore, there is a risk of the bobbin falling off when the winding shaft rotates, endangering the safety of machine operators.
A winding fixture comprising a fixture body, a support plate, a U-shaped frame, a reset rod, and a drive screw is designed. The sliding plate is driven by a knob and the drive screw to make the ball bearings squeeze the side end of the skeleton, the U-shaped frame squeezes the skeleton in both directions, the reset rod provides elasticity to ensure the skeleton fits stably, and the rotating drum guides the winding of the wire harness to prevent loosening and misalignment.
It achieves stable assembly of the winding shaft and the bobbin, preventing loosening and detachment, ensuring the flatness and safety of the winding, and reducing the safety risks for machine operators.
Smart Images
Figure CN224682934U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of winding fixture technology, and in particular to a transformer bobbin winding fixture. Background Technology
[0002] A winding fixture is used to stably fix the transformer frame in a specific position during the winding process, preventing it from shaking, shifting, or rotating, and ensuring the accuracy and stability of the winding.
[0003] However, the bobbin winding fixture and bobbin assembly lack a clamping and limiting device, which makes it easy for the winding shaft and bobbin to loosen during assembly, resulting in uneven winding. When the winding shaft rotates, the bobbin may fall off and fly out, causing injury to the machine operator. Utility Model Content
[0004] To address the shortcomings of existing technologies, this utility model provides a transformer bobbin winding fixture, which solves the technical problem that the bobbin winding fixture and bobbin are not equipped with a clamping and limiting device during assembly, making it easy for the winding shaft and bobbin to loosen during assembly, resulting in uneven winding, and the risk of the bobbin falling off and flying out when the winding shaft rotates, which could cause injury to machine operators.
[0005] To achieve the above objectives, this utility model provides the following technical solution: A transformer bobbin winding fixture includes a fixture body and a bobbin body. The fixture body has a rotating shaft inside, and the bobbin body has a slot at its side end. A limiting component is provided on the side end of the fixture body. The limiting component includes a support plate, a frame plate, and a U-shaped frame. A rotating cylinder is rotatably installed inside the U-shaped frame, and at least two reset rods are fixedly installed on the side end of the U-shaped frame.
[0006] Preferably, a sliding plate is slidably mounted on the inner side of the support plate, and a ball bearing is rotatably mounted on the top of the sliding plate; A drive screw is rotatably mounted inside the support plate, and a knob is rotatably mounted on the outside of the support plate.
[0007] Preferably, a sleeve that connects to the drive screw is fixedly installed on the side end of the slide plate, and the thread helix angle of the sleeve is smaller than the friction angle; Two fastening bolts are provided at each of the two sides of the support plate, and a guide groove is provided inside the support plate. Each of the reset rods has a segmented structure, and the surface of the rotating cylinder is provided with guide grooves.
[0008] Compared with the prior art, the present invention has the following beneficial effects; In this invention, the sliding plate is driven by the knob, the drive screw, and the sleeve, which causes the ball bearings to press against the side end of the skeleton body. This, combined with the U-shaped frame, applies bidirectional pressure to the skeleton, stabilizing its axial and radial positions. The U-shaped frame connects to the inner side of the skeleton body, with both ends fitting against the inner wall of the skeleton body, thus restricting the radial movement of the skeleton body. The reset rod generates elasticity under pressure, making the U-shaped frame fit more stably against the inner wall of the skeleton, preventing the winding shaft and skeleton assembly from loosening.
[0009] In this invention, a support plate is fixed to the side of the fixture body, and a U-shaped frame is connected to the inner side of the skeleton body. The two ends of the U-shaped frame are in contact with the inner wall of the skeleton body. The U-shaped frame moves first on the skeleton body, and at the same time, the reset rod squeezes the rotating drum. The rotating drum is in contact with the surface of the skeleton body. When winding the wire harness, the rotating drum squeezes the wire harness and guides the winding movement of the wire harness to prevent the wire harness from being misaligned. Attached Figure Description
[0010] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.
[0011] Figure 1 This is a structural diagram of the fixture body of this utility model; Figure 2 This is a structural diagram of the skeleton body of this utility model; Figure 3 This is a structural diagram of the frame plate of this utility model; Figure 4 This is a structural diagram of the skateboard of this utility model.
[0012] In the diagram: 11. Fixture body; 12. Skeleton body; 13. Support plate; 14. Frame plate; 15. U-shaped frame; 16. Rotary cylinder; 17. Reset rod; 18. Knob; 19. Drive screw; 21. Tube sleeve; 22. Slide plate; 23. Ball bearing; 24. Fastening bolt. Detailed Implementation
[0013] This application provides a transformer bobbin winding fixture, which effectively solves the problems of the lack of a clamping and limiting device between the bobbin winding fixture and the bobbin during assembly, which easily leads to loosening of the winding shaft and the bobbin, resulting in uneven winding and the risk of the bobbin falling off and flying out when the winding shaft rotates, causing injury to the machine operator. By using a knob, drive screw, and sleeve to drive the slide plate to make the ball press against the side end of the bobbin body, and with the cooperation of the U-shaped frame, the bobbin is bidirectionally compressed, stabilizing the axial and radial position of the bobbin. The U-shaped frame connects to the inner side of the bobbin body, and its two ends fit against the inner wall of the bobbin body, restricting the radial movement of the bobbin body; the reset rod generates elasticity under compression, making the U-shaped frame fit more stably against the inner wall of the bobbin and preventing the winding shaft and bobbin assembly from loosening.
[0014] Example: like Figures 1-4 As shown, the technical solution in this application embodiment effectively solves the technical problem that the lack of a clamping and limiting device between the bobbin winding fixture and the bobbin assembly makes it easy for the winding shaft and bobbin to loosen during assembly, resulting in uneven winding and a risk of the bobbin falling off and flying out when the winding shaft rotates, causing injury to the machine operator. The overall idea is as follows: To address the problems existing in the prior art, this utility model provides a transformer bobbin winding fixture, including a fixture body 11 and a bobbin body 12. The fixture body 11 has a rotating shaft inside, and the side end of the bobbin body 12 has a slot. By connecting one end of the bobbin body 12 to the fixture body 11, the rotating shaft inside the fixture body 11 drives the bobbin body 12 to rotate, and one end of the wire harness is wound around the surface of the bobbin body 12. The rotating bobbin body 12 evenly winds the wire harness around the surface of the bobbin body 12. A limiting component is provided on the side of the fixture body 11. The limiting component includes a support plate 13, a frame plate 14, and a U-shaped frame 15. A rotating cylinder 16 is rotatably installed inside the U-shaped frame 15. At least two reset rods 17 are fixedly installed on the side end of the U-shaped frame 15. By connecting the fixture body 11 and the skeleton body 12, the support plate 13 is fixed to the side of the fixture body 11. At the same time, the U-shaped frame 15 connects to the inner side of the skeleton body 12. The two ends of the U-shaped frame 15 are in contact with the inner wall of the skeleton body 12. By moving the U-shaped frame 15 on the skeleton body 12, the reset rods 17 squeeze the rotating cylinder 16. The rotating cylinder 16 is in contact with the surface of the skeleton body 12. When winding the wire harness, the rotating cylinder 16 squeezes the wire harness and guides the winding movement of the wire harness to prevent the wire harness from being misaligned. A slide plate 22 is slidably installed on the inner side of the support plate 13. A ball bearing 23 is rotatably installed on the top of the slide plate 22. By pushing the slide plate 22 to slide inside the support plate 13, the slide plate 22 drives the ball bearing 23 to move towards the side end of the frame body 12. The ball bearing 23 can rotate freely inside the slide plate 22. The slide plate 22 drives the ball bearing 23 to press the side end of the frame body 12. Together with the U-shaped frame 15, it generates bidirectional compression on one end of the frame body 12, stabilizing the position of the frame body 12. A drive screw 19 is rotatably mounted inside the support plate 13, and a knob 18 is rotatably mounted on the outside of the support plate 13. By rotating the knob 18, the knob 18 and the drive screw 19 are connected through a bevel gear. The rotating knob 18 drives the drive screw 19 to rotate inside the support plate 13. A sleeve 21 that mates with the drive screw 19 is fixedly installed on the side end of the slide plate 22. The thread helix angle of the sleeve 21 is smaller than the friction angle. The rotating drive screw 19 generates a thrust on the sleeve 21, causing the slide plate 22 to slide in a fixed direction inside the support plate 13. The forward rotating drive screw 19 pushes the slide plate 22 to press against the side end of the frame body 12. At the same time, the drive screw 19 stops rotating. The drive screw 19 and the sleeve 21 can lock themselves to limit the position of the slide plate 22. Two fastening bolts 24 are provided at both ends of the support plate 13. A guide groove is provided inside the support plate 13. The slide plate 22 presses against the frame body 12 along the support plate 13. At the same time, the ball bearing 23 can rotate freely inside the slide plate 22. When the frame body 12 rotates, it drives the ball bearing 23 to rotate inside the slide plate 22. The slide plate 22 can press and restrict the frame body 12, and also reduce the resistance to the rotation of the frame body 12 through the rotation of the ball bearing 23. Each reset rod 17 has a segmented structure, and the surface of the rotating cylinder 16 is provided with guide grooves.
[0015] Working principle: The first step is to align the end of the skeleton body 12 with the slot with the fixture body 11. The internal rotating shaft of the fixture body 11 is adapted to the skeleton slot to provide a rotational power basis for subsequent winding. The U-shaped frame 15 is then connected to the inside of the skeleton body 12, so that both ends of the U-shaped frame 15 are tightly fitted to the inner wall of the skeleton body 12. The structure of the U-shaped frame 15 restricts the radial movement of the skeleton body 12. At this time, the reset rod 17 on the U-shaped frame 15 is compressed due to the fit between the U-shaped frame 15 and the skeleton, and its elastic force reacts to the U-shaped frame 15, making the U-shaped frame 15 more stably fit to the inner wall of the skeleton. The inner rotating cylinder 16 of the U-shaped frame 15 is pressed by the reset rod 17 and fits to the surface of the skeleton body 12.
[0016] Rotating knob 18, which is connected to drive screw 19 via bevel gear, causes drive screw 19 to rotate inside support plate 13. When drive screw 19 rotates, it engages with sleeve 21 on the side of slide plate 22, generating a thrust on sleeve 21, forcing slide plate 22 to slide along guide groove inside support plate 13. During the sliding process, slide plate 22 drives top ball bearing 23 to approach the side of frame body 12 until ball bearing 23 presses against the side of frame body 12. At this time, ball bearing 23 can rotate freely inside slide plate 22, which not only works with U-shaped frame 15 to form bidirectional compression on the frame, stabilizing the axial and radial positions of the frame, but also reduces the frictional resistance between the frame and slide plate 22 when the frame rotates by the rotation of ball bearing 23.
[0017] The second step is to start the fixture body 11. The internal rotating shaft drives the skeleton body 12 to rotate. After fixing one end of the wire harness at a suitable starting position on the surface of the skeleton body 12, the wire harness begins to wind as the skeleton rotates. During winding, the rotating drum 16 on the U-shaped frame 15 is squeezed by the reset rod 17, which continuously exerts moderate pressure on the wire harness to prevent it from loosening. On the other hand, the guide groove on the surface of the rotating drum 16 cooperates with the rotation of the skeleton to provide a winding path guide for the wire harness, avoiding misalignment and stacking of the wire harness, and allowing the wire harness to be wound evenly and orderly on the surface of the skeleton body 12.
[0018] During winding, the skeleton body 12 rotates continuously, causing the balls 23 to rotate synchronously within the slide plate 22. Relying on the rolling characteristics of the balls 23, a stable pressure is maintained on the side of the skeleton without adding extra load to the skeleton's rotation. The self-locking characteristics of the drive screw 19 and the sleeve 21 stabilize the position of the slide plate 22, ensuring that the balls 23 continuously apply pressure to the skeleton. The U-shaped frame 15, the reset rod 17, and the rotating drum 16 work together to dynamically adapt to the rhythm of the skeleton's rotation and the wire harness winding, continuously ensuring winding accuracy and skeleton stability until the winding operation of the set number of turns is completed.
[0019] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.
Claims
1. A transformer bobbin winding fixture, comprising a fixture body (11) and a bobbin body (12), characterized in that, The fixture body (11) is provided with a rotating shaft inside, and the side end of the skeleton body (12) is provided with a slot, and also includes; The limiting component is disposed on the side end of the fixture body (11). The limiting component includes a support plate (13), a frame plate (14) and a U-shaped frame (15). A rotating cylinder (16) is rotatably installed inside the U-shaped frame (15). At least two reset rods (17) are fixedly installed on the side end of the U-shaped frame (15).
2. The transformer bobbin winding fixture as described in claim 1, characterized in that, A slide plate (22) is slidably mounted on the inner side of the support plate (13), and a ball bearing (23) is rotatably mounted on the top of the slide plate (22).
3. A transformer bobbin winding fixture as described in any one of claims 1-2, characterized in that, A drive screw (19) is rotatably mounted inside the support plate (13), and a knob (18) is rotatably mounted on the outside of the support plate (13).
4. The transformer bobbin winding fixture as described in claim 2, characterized in that, The side end of the slide plate (22) is fixedly installed with a sleeve (21) that is connected to the drive screw (19), and the thread helix angle of the sleeve (21) is smaller than the friction angle.
5. A transformer bobbin winding fixture as described in claim 1, characterized in that, Two fastening bolts (24) are provided on both sides of the support plate (13), and a guide groove is provided inside the support plate (13).
6. The transformer bobbin winding fixture as described in claim 1, characterized in that, Each of the reset rods (17) has a segmented structure, and the surface of the rotating cylinder (16) is provided with a guide groove.