Transformer winding auxiliary pressing device for power module

Abstract

The utility model relates to the technical field of transformers, and provides a transformer winding auxiliary pressing device for a power module. The copper wire unwinding device comprises a rack, a rotating shaft rotationally connected to the rack, a framework coaxially arranged on the rotating shaft in a sleeving mode, an unwinding frame rotationally connected to the rack and used for unwinding a copper wire, a pressing roller perpendicular to the length direction of the framework, and a telescopic air cylinder arranged on the rack and used for driving the pressing roller to do reciprocating motion. The axis of a piston rod of the telescopic air cylinder is perpendicular to the axis of the framework, a first mounting plate for fixing the piston rod of the telescopic air cylinder is arranged on the rack, the pressing roller is rotationally connected to the first mounting plate, and the axis of the pressing roller is parallel to the axis of the framework. The coil winding device has the beneficial effect of improving the winding quality of the coil.

Description

Technical Field

[0001] The present application relates to the technical field of transformers, and in particular to a transformer winding auxiliary pressing device for a power module. Background Art

[0002] In ACDC power supplies, transformers are often used, among which the core components of the transformer specifically include: a transformer frame, windings (including primary and secondary coils) arranged on the frame, and a magnetic core plugged into one end of the frame, and a connector is arranged on the other end of the frame.

[0003] Among them, for the winding of the winding, in the prior art, some people manually wind the coil on the transformer frame, but during the winding process, due to the different strengths of each person, the tightness of the wound coil is different, which will lead to uneven product quality. Therefore, some people choose to use a winding machine. The existing winding machine includes a frame, a rotating shaft rotatably connected to the frame, a driving motor that drives the rotating shaft to rotate, and an unwinding frame rotatably connected to the upper unwinding coil, wherein the rotating shaft is coaxially sleeved with the frame, and the two rotate circumferentially. As the driving motor is started, the frame is driven to rotate, so as to drive the coil on the unwinding frame to be unwound, so as to wind the coil on the frame.

[0004] Among them, in order to facilitate winding, a traction device is usually provided to pull the rotating shaft or the unwinding frame to move left and right, so as to evenly wind the coil onto the skeleton. However, when the external traction device moves the rotating shaft or the unwinding frame, it is easy to produce a speed difference with the rotation speed of the rotating shaft itself, so that the tightness of the coil wound onto the skeleton may be different, which leads to poor quality of the skeleton winding, and therefore needs further improvement. Utility Model Content

[0005] In order to improve the winding quality of the coil, the present application provides a transformer winding auxiliary pressing device for a power module.

[0006] The present application provides a transformer winding auxiliary pressing device for a power module, which adopts the following technical solution:

[0007] A transformer winding auxiliary pressing device for a power module comprises a frame, a rotating shaft rotatably connected to the frame, a frame coaxially sleeved on the rotating shaft, an unwinding frame rotatably connected to the frame for unwinding copper wire, a clamping roller perpendicular to the length direction of the frame, and a telescopic cylinder arranged on the frame to drive the clamping roller to reciprocate, wherein the axis of the piston rod of the telescopic cylinder is perpendicular to the axis of the frame, a first mounting plate for fixing the piston rod of the telescopic cylinder is arranged on the frame, the clamping roller is rotatably connected to the first mounting plate, and the axis of the clamping roller is arranged parallel to the axis of the frame.

[0008] By adopting the above technical solution, when the unwinding rack unwinds the copper wire and winds it on the skeleton, after each winding of a specific length, such as winding a circle of copper wire, the telescopic cylinder is started to push the outer peripheral wall of the clamping roller to abut against the copper wire, and the copper wire is compacted as the rotating shaft rotates. This pressure can be determined by the distance pushed by the telescopic cylinder, so the compactness of the coil of each transformer can be controlled and unified, so as to reduce the possibility of different compactness of the wound copper wire, thereby improving the winding quality of the coil.

[0009] Preferably, the frame is provided with a buffer member for buffering the force generated when the telescopic cylinder is extended and retracted.

[0010] By adopting the above technical solution, a buffer is provided to buffer the impact force brought by the telescopic cylinder when pushing the piston rod to perform telescopic movement, so as to reduce the force transmitted along with the rigidity and transmitted to the rotating shaft or rotating frame, thereby reducing the impact of the copper wire being wound on the frame.

[0011] Preferably, a second mounting plate is provided on the frame, the second mounting plate is parallel to the first mounting plate, the telescopic cylinder is provided between the first mounting plate and the second mounting plate, the cylinder body of the telescopic cylinder is fixedly connected to the second mounting plate, the buffer member is a second spring, and both ends of the second spring are respectively provided on two surfaces of the first mounting plate and the second mounting plate close to each other.

[0012] By adopting the above technical solution, the elasticity of the second spring itself is used to buffer the force generated by the telescopic cylinder during the telescopic movement, and the second mounting plate provided therein provides a mounting carrier for the buffer component.

[0013] Preferably, a plurality of the second springs are arranged at intervals along the length direction of the second mounting plate.

[0014] By adopting the above technical solution, a plurality of second springs are provided to improve the buffering effect.

[0015] Preferably, the frame is provided with a driving motor for driving the rotating shaft to rotate, the driving motor is fixedly connected to the side wall of the frame, the output shaft of the driving motor is rotatably arranged in the frame, and the rotating shaft is detachably connected to the output shaft of the driving motor.

[0016] By adopting the above technical solution, different transformers have different frame sizes. Since the frame is coaxially sleeved on the rotating shaft, the required rotating shaft size will also be different. Therefore, the rotating shaft is detachably connected to the output shaft of the driving motor so that it can be disassembled and replaced according to needs.

[0017] Preferably, a slot is provided on the end face of the output shaft of the driving motor, and a plug block is protruding from the rotating shaft and inserted into the slot. A through hole is provided on the outer peripheral wall of the output shaft of the driving motor, and the through hole is connected to the slot. The output shaft of the driving motor is provided with a bolt inserted in the through hole, and the bolt is threadedly connected to the plug block.

[0018] By adopting the above technical solution, the insert block is inserted into the slot, and the bolt is passed through the through hole to be threadedly connected with the insert block, so that the rotating shaft can be installed on the output shaft of the driving motor, and the bolt can also be used to facilitate the removal of the rotating block from the output shaft of the driving motor.

[0019] Preferably, the outer peripheral wall of the rotating shaft is provided with elastic protrusions, and the elastic protrusions are used to abut against the inner wall of the frame, and a plurality of the elastic protrusions are arranged at intervals along the axis of the rotating shaft.

[0020] By adopting the above technical solution, the elastic protrusions are used to abut against the inner wall of the frame to improve the connection strength between the frame and the rotating shaft, thereby reducing the possibility of slipping and detaching from the rotating shaft due to external forces.

[0021] Preferably, the outer peripheral wall of the rotating shaft is provided with a first mounting groove for sliding connection of the elastic protrusion, and the rotating shaft is provided with a pushing member for pushing the elastic protrusion to slide.

[0022] By adopting the above technical solution, the elastic protrusion is closely abutted against the inner wall of the frame by the pushing of the pushing member, and the frame can also be easily slid away from the rotating shaft by the pushing member.

[0023] Preferably, the plug block is penetrated by a threaded hole for the bolt to be threadedly connected, the inner wall of the threaded hole is provided with a second mounting groove, the pushing member is installed in the second mounting groove, the length direction of the second mounting groove is parallel to the axis of the rotating shaft, the second mounting groove is connected to the first mounting groove, the pushing member includes a push rod and a first spring fixedly connected to the push rod to push the push rod to move in the direction of the threaded hole, the first spring is fixedly connected to the inner wall of the second mounting groove, guide surfaces are provided at both ends of the push rod, one of the elastic protrusions is protrudingly provided with a guide rod for abutting against the guide surface, and adjacent elastic protrusions are connected.

[0024] By adopting the above technical solution, the plug block on the rotating shaft is first inserted into the slot, and then the frame is sleeved on the rotating shaft. In the process of the bolt passing through the through hole and the threaded hole for threaded connection, the push rod is pushed toward the second mounting groove by the guide surface set close to the threaded hole. Then, the guide rod is pushed to abut against the other guide surface to push the elastic protrusion toward the direction close to the elastic protrusion and away from the first mounting groove, so as to abut against the inner wall of the frame to limit the possibility of the frame slipping along the length direction of the rotating shaft.

[0025] In summary, the utility model has the following beneficial effects:

[0026] 1. By setting a clamping roller, after each winding of a certain length, the outer wall of the clamping roller is pushed to abut against the copper wire. As the rotating shaft rotates, the copper wire is compacted. This pressure can be determined by the distance pushed by the telescopic cylinder. Therefore, the compactness of the coil of each transformer can be controlled and unified to reduce the possibility of different compactness of the wound copper wire, thereby improving the winding quality of the coil.

[0027] 2. A buffer is provided to buffer the impact force caused by the telescopic cylinder when it pushes the piston rod to perform telescopic movement.

[0028] 3. By providing elastic protrusions to abut against the inner wall of the frame, the connection strength between the frame and the rotating shaft is improved, and the possibility of slipping and detaching from the rotating shaft due to external forces is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application;

[0030] Figure 2 is a schematic structural diagram of a rotating shaft in an embodiment of the present application;

[0031] Figure 3 is a schematic diagram of the internal structure of the rotating shaft in an embodiment of the present application;

[0032] Figure 4 It is a schematic diagram of the structure of the buffer component in the embodiment of the present application.

[0033] Explanation of the reference numerals in the accompanying drawings: 1. Frame; 11. Workbench; 12. Drive motor; 121. Slot; 122. Perforation; 13. First mounting plate; 14. Second mounting plate; 15. Rotating block; 16. Rotating rod; 2. Rotating shaft; 21. Insert block; 22. Threaded hole; 23. Elastic protrusion; 231. Guide rod; 24. First mounting groove; 25. Second mounting groove; 3. Frame; 4. Unwinding frame; 5. Pressure roller; 6. Telescopic cylinder; 7. Bolt; 8. Pushing member; 81. Push rod; 811. Guide surface; 82. Second spring; 9. Buffer member. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-4 , further details of this application are given.

[0035] An embodiment of the present application discloses a transformer winding auxiliary pressing device for a power module.

[0036] Example:

[0037] A transformer winding auxiliary pressing device for a power module, referring to Figure 1 , Figure 2 , including a frame 1, a rotating shaft 2 rotatably connected to the frame 1, a skeleton 3 coaxially sleeved on the rotating shaft 2, an unwinding frame 4 rotatably connected to the frame 1 for unwinding the copper wire, a clamping roller 5 perpendicular to the length direction of the skeleton 3, and a telescopic cylinder 6 arranged on the frame 1 to drive the clamping roller 5 to reciprocate.

[0038] A workbench 11 is protrudingly provided on the side wall of the frame 1, wherein, for the rotation of the rotating frame, a driving motor 12 (not shown in the figure) for driving the rotating shaft 2 to rotate is fixedly connected inside the frame 1, and the output shaft of the driving motor 12 is rotatably penetrated through the side wall of the frame 1 and extends to the top of the workbench 11. In this embodiment, the rotating shaft 2 is detachably connected to the output shaft of the driving motor 12, a slot 121 is provided on the end surface of the output shaft of the driving motor 12, an insert block 21 is protrudingly provided on the rotating shaft 2 and is inserted into the slot 121, a through hole 122 is provided on the outer peripheral wall of the output shaft of the driving motor 12, the through hole 122 is connected to the slot 121, a bolt 7 is provided on the output shaft of the driving motor 12 and is penetrated through the through hole 122, a threaded hole 22 is provided on the outer peripheral wall of the insert block 21, and the bolt 7 is penetrated through the through hole 122 and is threadedly connected to the threaded hole 22.

[0039] Reference Figure 2 , Figure 3 In this embodiment, the outer peripheral wall of the rotating shaft 2 is provided with elastic protrusions 23, and the elastic protrusions 23 are used to abut against the inner wall of the frame 3. A plurality of elastic protrusions 23 are arranged at intervals along the axis of the rotating shaft 2. The rotating shaft 2 is provided with a pusher 8 for pushing the elastic protrusions 23 to slide. The inner wall of the threaded hole 22 is provided with a second mounting groove 25, and the length direction of the second mounting groove 25 is parallel to the axis of the rotating shaft 2. The second mounting groove 25 is connected to the first mounting groove 24, and the pusher 8 is installed in the second mounting groove 25. The pusher 8 specifically includes a push rod 81 and a first spring fixedly connected to the push rod 81 to push the push rod 81 to move toward the direction of the threaded hole 22. The first spring is fixedly connected to the inner wall of the second mounting groove 25. Both ends of the push rod 81 are provided with guide surfaces 811, and one of the elastic protrusions 23 is protrudingly provided with a guide rod 231 for abutting against the guide surface 811, and adjacent elastic protrusions 23 are connected.

[0040] Back to Figure 1 , wherein the unwinding rack 4 is arranged on a side wall of the workbench 11 and is arranged parallel to the output shaft of the driving motor 12 .

[0041] Reference Figure 1 , Figure 4, wherein the axis of the piston rod of the telescopic cylinder 6 is perpendicular to the axis of the frame 3, a first mounting plate 13 for fixing the piston rod of the telescopic cylinder 6 is fixedly connected to the upper surface of the workbench 11, and the clamping roller 5 is rotatably connected to the first mounting plate 13. Specifically, two rotating blocks 15 are protruding from the surface of the first mounting plate 13 close to the frame 3, a rotating rod 16 is arranged between the rotating blocks 15, and the clamping roller 5 is fixedly sleeved on the rotating rod 16. In this embodiment, the axis of the clamping roller 5 is arranged parallel to the axis of the frame 3.

[0042] The frame 1 is provided with a second mounting plate 14, which is parallel to the first mounting plate 13. The telescopic cylinder 6 is provided between the first mounting plate 13 and the second mounting plate 14, and the cylinder body of the telescopic cylinder 6 is fixedly connected to the second mounting plate 14. Further, the frame 1 is provided with a buffer 9 for buffering the force generated when the telescopic cylinder 6 is extended and retracted. In this embodiment, the buffer 9 is a second spring 82, and the buffer 9 is a second spring 82. The two ends of the second spring 82 are respectively provided on the two surfaces of the first mounting plate 13 and the second mounting plate 14 that are close to each other. A plurality of second springs 82 are provided at intervals along the length direction of the second mounting plate 14. Specifically, two second springs 82 are provided, and are respectively provided on both sides of the telescopic cylinder 6.

[0043] The implementation principle of the transformer winding auxiliary pressing device for a power module in an embodiment of the present application is as follows: after a certain length is wound on the skeleton 3, the telescopic cylinder 6 is started to push the outer peripheral wall of the pressing roller 5 to abut against the copper wire, and the copper wire is compacted as the rotating shaft 2 rotates. This pressure can be determined by the distance pushed by the telescopic cylinder 6, so the tightness of the coil of each transformer can be controlled and unified to reduce the possibility of different tightness of the wound copper wire, thereby improving the winding quality of the coil.

[0044] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A transformer winding auxiliary pressing device for a power module, characterized in that: The invention comprises a frame (1), a rotating shaft (2) rotatably connected to the frame (1), a frame (3) coaxially sleeved on the rotating shaft (2), an unwinding frame (4) rotatably connected to the frame (1) for unwinding a copper wire, a pressing roller (5) perpendicular to the length direction of the frame (3), and a telescopic cylinder (6) arranged on the frame (1) for driving the pressing roller (5) to reciprocate, wherein the axis of the piston rod of the telescopic cylinder (6) is perpendicular to the axis of the frame (3), and a first mounting plate (13) for fixing the piston rod of the telescopic cylinder (6) is arranged on the frame (1), the pressing roller (5) is rotatably connected to the first mounting plate (13), and the axis of the pressing roller (5) is arranged parallel to the axis of the frame (3).

2. The transformer winding auxiliary pressing device for a power module according to claim 1, characterized in that: The frame (1) is provided with a buffer member (9) for buffering the force generated when the telescopic cylinder (6) is extended or retracted.

3. The transformer winding auxiliary pressing device for a power module according to claim 2, characterized in that: The frame (1) is provided with a second mounting plate (14), the second mounting plate (14) being parallel to the first mounting plate (13), the telescopic cylinder (6) being provided between the first mounting plate (13) and the second mounting plate (14), the cylinder body of the telescopic cylinder (6) being fixedly connected to the second mounting plate (14), the buffer member (9) being a second spring (82), the two ends of the second spring (82) being respectively provided on two surfaces of the first mounting plate (13) and the second mounting plate (14) which are close to each other.

4. The transformer winding auxiliary pressing device for a power module according to claim 3, characterized in that: A plurality of second springs (82) are arranged at intervals along the length direction of the second mounting plate (14).

5. The transformer winding auxiliary pressing device for a power module according to claim 1, characterized in that: The frame (1) is provided with a driving motor (12) for driving the rotating shaft (2) to rotate; the driving motor (12) is fixedly connected to a side wall of the frame (1); an output shaft of the driving motor (12) is rotatably arranged in the frame (1); and the rotating shaft (2) is detachably connected to the output shaft of the driving motor (12).

6. The transformer winding auxiliary pressing device for a power module according to claim 5, characterized in that: The end surface of the output shaft of the drive motor (12) is provided with a slot (121); the rotating shaft (2) is protrudingly provided with an insert block (21) inserted into the slot (121); the outer peripheral wall of the output shaft of the drive motor (12) is provided with a through hole (122); the through hole (122) is connected to the slot (121); the output shaft of the drive motor (12) is provided with a bolt (7) inserted into the through hole (122); the bolt (7) is threadedly connected to the insert block (21).

7. The transformer winding auxiliary pressing device for a power module according to claim 6, characterized in that: The outer peripheral wall of the rotating shaft (2) is provided with elastic protrusions (23), and the elastic protrusions (23) are used to abut against the inner wall of the frame (3). A plurality of the elastic protrusions (23) are arranged at intervals along the axis of the rotating shaft (2).

8. The transformer winding auxiliary pressing device for a power module according to claim 7, characterized in that: The outer peripheral wall of the rotating shaft (2) is provided with a first mounting groove (24) for the elastic protrusion (23) to be slidably connected, and the rotating shaft (2) is provided with a pushing member (8) for pushing the elastic protrusion (23) to slide.

9. The transformer winding auxiliary pressing device for a power module according to claim 8, characterized in that: The insert block (21) is provided with a threaded hole (22) for threaded connection of the bolt (7), the inner wall of the threaded hole (22) is provided with a second mounting groove (25), the pushing member (8) is installed in the second mounting groove (25), the length direction of the second mounting groove (25) is parallel to the axis of the rotating shaft (2), the second mounting groove (25) is connected to the first mounting groove (24), the pushing member (8) comprises a push rod (81) and a first spring fixedly connected to the push rod (81) to push the push rod (81) to move in the direction of the threaded hole (22), the first spring is fixedly connected to the inner wall of the second mounting groove (25), both ends of the push rod (81) are provided with guide surfaces (811), one of the elastic protrusions (23) is protrudingly provided with a guide rod (231) for abutting against the guide surface (811), and adjacent elastic protrusions (23) are connected.

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