Iron core rotation driving tool for winding transformer coil

Abstract

An iron core rotation driving tool for winding a transformer coil comprises a bottom plate, a plurality of kidney-shaped holes and a plurality of pairs of limiting holes are formed in the bottom plate, a pair of limiting screws is arranged in each limiting hole in a penetrating mode, and the upper ends and the lower ends of every two pairs of limiting screws are connected with limiting plates. A motor is installed on each limiting plate, a rotating shaft is arranged on each pair of limiting plates in a rotating mode, the motors are connected to the rotating shafts, and driving rubber wheels are arranged on the rotating shafts connected to the motors. A connecting plate is installed on the limiting plate provided with the motor, a movable lower plate is welded to the connecting plate, a pair of inclined holes are formed in the movable lower plate, acting inner rods are arranged in the inclined holes in a penetrating mode, the acting inner rods are welded to the limiting plate, and a limiting rubber wheel is arranged on the rotating shaft. In the process that the limiting plate and the driving rubber wheel are close to and tightly attached to the annular iron core under the action of pushing and the like, due to the fact that the limiting rubber wheel can move towards the annular iron core under the action of the inclined hole and the action inner rod, operation is simplified through the mode, and the limiting effect on the annular iron core can also be ensured.

Description

Technical Field

[0001] This utility model relates to the field of transformer processing technology, and in particular to a core driving tool for winding transformer coils. Background Technology

[0002] During the manufacturing of toroidal transformers, a winding machine is used to wind the coil onto the toroidal core. Currently, the fixture used for placing and driving the core's rotation consists of three rubber wheels. One wheel is the driving component, used to rotate the toroidal core, while the other two wheels are limiting components. During operation, rotating one wheel activates a swing arm at its lower end, hinged to the worktable. This swing arm rotates to ensure its outer circumference is tightly against the toroidal core. The positions of the other two wheels are then adjusted to ensure they are also tightly against the toroidal core. Finally, the driving wheel is activated to begin the coil winding operation. However, the current core-driving fixture is cumbersome in fixing the toroidal core, and the fixing effect is often unsatisfactory, failing to ensure the toroidal core rotates synchronously with the rubber wheels, thus affecting the coil winding. Utility Model Content

[0003] This utility model provides a core driving tool for winding transformer coils, which solves the shortcomings of the prior art and solves the problem of cumbersome operation when fixing the toroidal core, and has strong practicality.

[0004] In order to achieve the purpose of this utility model, the following technology is proposed to be adopted:

[0005] A tooling for driving a transformer coil winding core includes a base plate with a notch. Multiple oblong holes and multiple pairs of limiting holes are arranged in a circular array around the base plate's geometric center. Each pair of limiting holes is located on both sides of each oblong hole. A pair of limiting screws passes through each limiting hole. Each pair of limiting screws has a limiting plate threaded to its upper and lower ends. One limiting plate is located on the upper side of the base plate, and the other on the lower side. The limiting screws guide and limit the movement of the limiting plates. A motor is mounted on one of the lower limiting plates. Each pair of limiting plates has a rotating shaft. The motor's output shaft is connected to the rotating shaft, and a drive wheel is mounted on the rotating shaft connected to the motor. The drive wheel is located above the base plate. The motor drives the drive wheel to rotate, causing the toroidal core to rotate around its axial direction. A connecting plate is mounted on the limit plate containing the motor. A movable lower plate is welded to the inner end of the connecting plate. The movable lower plate has a pair of oblique holes, with an angle between the length of the oblique holes and the direction of movement of the movable lower plate. An inner rod passes through the oblique holes, and the upper ends of the inner rods are welded to another pair of lower limit plates. Limiting rubber wheels are mounted on another pair of rotating shafts. When the limit plates and driving rubber wheels approach and press against the annular iron core under pushing or other actions, the oblique holes and inner rods also cause the limiting rubber wheels to move towards the annular iron core. This simplifies the operation and ensures effective limiting of the annular iron core.

[0006] Furthermore, rubber rings are provided on the outer circumference of the drive rubber wheel and the limit rubber wheel. This improves the limiting effect of the drive rubber wheel and the limit rubber wheel on the annular iron core and also ensures that the annular iron core rotates synchronously.

[0007] Furthermore, multiple pairs of rotating seats are installed on the base plate, and each pair of rotating seats is equipped with a support roller. The rollers support the toroidal core and prevent the lower end of the toroidal core from rubbing against the base plate, thus avoiding wear on the toroidal core or coil.

[0008] Furthermore, in order to guide the movement of the lower plate, a pair of guide holes are provided on the lower plate. The length direction of the guide holes is parallel to the movement direction of the lower plate. A limiting vertical rod is inserted into the guide hole. The upper end of the limiting vertical rod is welded to the base plate. The lower end of the limiting vertical rod is provided with a limiting lower plate. The lower end of the limiting vertical rod is connected to a nut by a thread. The upper end of the nut acts on the lower wall of the limiting lower plate.

[0009] Furthermore, a pair of sleeve blocks are provided on the movable lower plate, and a guide pin is provided on the sleeve block. One end of the guide pin is provided with an end cap, and the other end of the guide pin is equipped with an installation end plate. The installation end plate is installed on the base plate by screws. A return spring is sleeved on the guide pin. The return spring is located between the installation end plate and the sleeve block. The return spring is set so that it can automatically release the limit on the toroidal iron core after the coil is wound.

[0010] Furthermore, a movable sleeve is provided around the outer periphery of the inner rod. The outer periphery of the movable sleeve is tangent to the inner wall of the inclined hole. The movable sleeve reduces the frictional resistance when the lower plate moves, thereby improving the flexibility of movement.

[0011] Furthermore, to facilitate quick positioning of the toroidal core, a rotating block is hinged to the base plate via a hinge shaft. An adjusting screw is threaded onto the rotating block. A rotating head is located at the outer end of the adjusting screw, and an inner top head is installed at the inner end of the adjusting screw. An inner top wheel is rotatably mounted at the inner end of the inner top head. An inner top arc plate is installed on the positioning plate, with its outer circumference tangent to the outer circumference of the inner top wheel. A pair of baffles are welded to both ends of the inner top arc plate. The provision of the adjusting screw makes it possible to adjust the positioning effect.

[0012] The advantages of the above technical solution are:

[0013] This invention simplifies the limiting operation process of the toroidal iron core and improves the limiting effect on the toroidal iron core. Attached Figure Description

[0014] To make the objectives, technical solutions, and advantages of this utility model clearer, the following will provide a more detailed description of this utility model in conjunction with the accompanying drawings.

[0015] Figure 1 A three-dimensional structure of one embodiment is shown. Figure 1 .

[0016] Figure 2 A three-dimensional structure of one embodiment is shown. Figure 2 .

[0017] Figure 3 A magnified view of point A is shown.

[0018] Figure 4 A magnified view of point B is shown. Detailed Implementation

[0019] like Figures 1-4As shown, a core driving fixture for transformer coil winding is mounted on a transformer coil winding machine and is used for limiting the toroidal core and driving the toroidal core to rotate during the winding process. It includes a base plate 1 with a notch 10. Multiple oblong holes 11 and multiple pairs of limiting holes 12 are arranged in a circular array around the geometric center of the base plate 1, with each pair of limiting holes 12 distributed on both sides of each oblong hole 11. A pair of limiting screws 30 are inserted into each limiting hole 12. The upper and lower ends of every two pairs of limiting screws 30 are respectively connected to limiting plates 3 via threads. One limiting plate 3 is located on the upper side of the base plate 1, and the other limiting plate 3 is located on the lower side of the base plate 1.

[0020] Multiple pairs of rotating seats 2 are installed on the base plate 1, and each pair of rotating seats 2 is provided with a support roller 20 for rotation.

[0021] One of the lower limiting plates 3 is equipped with a motor 33. Each pair of limiting plates 3 is rotatably provided with a rotating shaft 7. The output shaft of the motor 33 is connected to the rotating shaft 7. The rotating shaft 7 connected to the motor 33 is provided with a drive rubber wheel 34. The drive rubber wheel 34 is located above the base plate 1. Another pair of rotating shafts 7 is provided with a limiting rubber wheel 64. The outer periphery of the drive rubber wheel 34 and the limiting rubber wheel 64 is provided with a rubber ring.

[0022] A connecting plate 5 is installed on the limiting plate 3 on which the motor 33 is mounted. A movable lower plate 50 is welded to the inner end of the connecting plate 5. A pair of oblique holes 51 are provided on the movable lower plate 50. There is an angle between the length direction of the oblique holes 51 and the moving direction of the movable lower plate 50. An inner rod 6 is inserted into the oblique holes 51. The upper ends of the inner rods 6 are respectively welded to another pair of limiting plates 3 located on the lower side. In addition, a movable sleeve 60 is fitted around the outer periphery of the inner rods 6. The outer periphery of the movable sleeve 60 is tangent to the inner wall of the oblique holes 51. A rotating block 4 is hinged to the base plate 1 via a hinge shaft. An adjusting screw 40 is threaded onto the rotating block 4. A rotating head 41 is provided at the outer end of the adjusting screw 40, and an inner top head 42 is installed at the inner end of the adjusting screw 40. An inner top wheel 43 is rotatably provided at the inner end of the inner top head 42. An inner top arc plate 31 is installed on the limiting plate 3 on which the motor 33 is installed. The outer periphery of the inner top arc plate 31 is tangent to the outer periphery of the inner top wheel 43. The two ends of the inner top arc plate 31 are welded. A pair of baffles 32 are provided. A pair of guide holes 52 are provided on the movable lower plate 50. The length direction of the guide holes 52 is parallel to the moving direction of the movable lower plate 50. A limiting vertical rod 53 is inserted into the guide hole 52. The upper end of the limiting vertical rod 53 is welded to the base plate 1. A limiting lower plate 54 is provided at the lower end of the limiting vertical rod 53. A nut 55 is threadedly connected to the lower end of the limiting vertical rod 53. The upper end of the nut 55 acts on the lower wall of the limiting lower plate 54. A pair of sleeve blocks 56 are provided on the movable lower plate 50. A guide pin 57 is inserted through the sleeve block 56. One end of the guide pin 57 is provided with an end cap. An installation end plate 58 is installed at the other end of the guide pin 57. The installation end plate 58 is installed on the base plate 1 by screws. A return spring 59 is sleeved on the guide pin 57. The return spring 59 is located between the installation end plate 58 and the sleeve block 56.

[0023] In this embodiment, when the application is carried out, the operator places the annular iron core on the support roller 20.

[0024] Next, the rotating block 4 is rotated around the hinge axis. When the rotating block 4 rotates, the inner top wheel 43 at its inner end will act on the inner top arc plate 31, causing the inner top arc plate 31 to move inward under the action of the inner top wheel 43. When it moves inward, it will cause the drive rubber wheel 34 and the motor 33 to move, and cause the drive rubber wheel 34 to be in close contact with the outer circumference of the annular iron core. When the drive rubber wheel 34 moves, it will cause the moving lower plate 50 to move inward, and as the moving lower plate 50 moves, the restoring spring 59 will be compressed. At the same time, as the moving lower plate 50 moves, the oblique hole 51 on it will act on the moving sleeve 60, thereby causing the limiting rubber wheel 64 connected to it to move closer to the annular iron core, and finally causing the limiting rubber wheel 64 to limit the annular iron core. If the limiting effect on the annular iron core is poor, the limiting effect of the drive rubber wheel 34 and the limiting rubber wheel 64 on the annular iron core can be ensured by turning the adjusting screw 40.

[0025] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations of this utility model fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A core driving fixture for winding transformer coils, characterized in that, Includes a base plate (1), on which a notch (10) is provided, and on which multiple waist-shaped holes (11) and multiple pairs of limiting holes (12) are arranged in a circular array around the geometric center of the base plate (1), with each pair of limiting holes (12) distributed on both sides of each waist-shaped hole (11); Each limiting hole (12) is provided with a pair of limiting screws (30), and the upper and lower ends of each pair of limiting screws (30) are respectively connected to limiting plates (3) by threads. One limiting plate (3) is located on the upper side of the base plate (1), and the other limiting plate (3) is located on the lower side of the base plate (1). A motor (33) is installed on one of the lower limiting plates (3). A rotating shaft (7) is rotatably provided on each pair of limiting plates (3). The output shaft of the motor (33) is connected to the rotating shaft (7). A drive rubber wheel (34) is provided on the rotating shaft (7) connected to the motor (33). The drive rubber wheel (34) is located above the base plate (1). A connecting plate (5) is installed on the limiting plate (3) on which the motor (33) is installed. A movable lower plate (50) is welded to the inner end of the connecting plate (5). A pair of oblique holes (51) are provided on the movable lower plate (50). There is an angle between the length direction of the oblique holes (51) and the moving direction of the movable lower plate (50). An inner rod (6) is inserted through the oblique holes (51). The upper end of the inner rod (6) is welded to another pair of limiting plates (3) located on the lower side. Another pair of rotating shafts (7) are equipped with limiting rubber wheels (64).

2. The core driving fixture for transformer coil winding according to claim 1, characterized in that, Rubber rings are provided on the outer periphery of the driving rubber wheel (34) and the limiting rubber wheel (64).

3. The core driving tool for transformer coil winding according to claim 1, characterized in that, Multiple pairs of rotating seats (2) are installed on the base plate (1), and each pair of rotating seats (2) is provided with a support roller (20) rotating on it.

4. The core driving fixture for transformer coil winding according to claim 1, characterized in that, A pair of guide holes (52) are provided on the movable lower plate (50). The length direction of the guide holes (52) is parallel to the moving direction of the movable lower plate (50). A limiting vertical rod (53) is inserted in the guide hole (52). The upper end of the limiting vertical rod (53) is welded to the base plate (1). A limiting lower plate (54) is provided at the lower end of the limiting vertical rod (53). A nut (55) is threadedly connected to the lower end of the limiting vertical rod (53). The upper end of the nut (55) acts on the lower wall of the limiting lower plate (54).

5. The core driving tool for transformer coil winding according to claim 1, characterized in that, A pair of sleeve blocks (56) are provided on the movable lower plate (50). A guide pin (57) is provided on the sleeve block (56). One end of the guide pin (57) is provided with an end cap. The other end of the guide pin (57) is equipped with an mounting end plate (58). The mounting end plate (58) is installed on the base plate (1) by screws. A return spring (59) is sleeved on the guide pin (57). The return spring (59) is located between the mounting end plate (58) and the sleeve block (56).

6. The core driving tool for transformer coil winding according to claim 1, characterized in that, The outer periphery of the inner rod (6) is fitted with a movable sleeve (60), and the outer periphery of the movable sleeve (60) is tangent to the inner wall of the inclined hole (51).

7. The core driving fixture for transformer coil winding according to claim 1, characterized in that, A rotating block (4) is hinged to the base plate (1) via a hinge shaft. An adjusting screw (40) is threaded onto the rotating block (4). A rotating head (41) is provided on the outer end of the adjusting screw (40). An inner top head (42) is installed on the inner end of the adjusting screw (40). An inner top wheel (43) is rotatably provided on the inner end of the inner top head (42). An inner top arc plate (31) is installed on the limiting plate (3). The outer periphery of the inner top arc plate (31) is tangent to the outer periphery of the inner top wheel (43). A pair of baffles (32) are welded to both ends of the inner top arc plate (31).

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