Adjustable winding die for dry-type transformer

Abstract

The utility model relates to the technical field of transformer production, and discloses an adjustable winding die for a dry-type transformer, which comprises a turntable and a rotating mechanism for driving the turntable to rotate, a rotating rod is fixedly connected to the left side surface of the turntable, a clamping mechanism is arranged at the left end of the rotating rod, and the clamping mechanism comprises an adjusting seat. An adjusting rod is movably connected to the front surface of the adjusting seat in a penetrating mode, a gear is fixedly connected to the position, located on the inner side of the adjusting seat, of the outer portion of the adjusting rod, racks are connected to the left side and the right side of the gear in an engaged mode, and clamping plates are fixedly connected to the ends, away from the adjusting seat, of the racks. By arranging the clamping mechanism, an adjusting rod in the clamping mechanism is rotated anticlockwise to drive a gear to rotate, so that two racks drive a clamping plate to abut against the inner wall of a dry-type transformer bobbin, and the dry-type transformer bobbin is fixed; a pawl in the positioning mechanism is attached to a ratchet wheel, so that the ratchet wheel cannot rotate clockwise, and the phenomenon that the dry-type transformer bobbin is loosened when fixed by a clamping plate is avoided.

Description

Technical Field

[0001] This utility model relates to the field of transformer manufacturing technology, specifically an adjustable winding mold for dry-type transformers. Background Technology

[0002] Dry-type transformers are a type of transformer that are encapsulated in epoxy resin (without filler or with filler) or encapsulated with epoxy resin-impregnated glass fiber. Besides the core, the coil is also crucial to a transformer. Appropriate wire gauges, segmentation design, insulation distribution, casting methods, insulation materials, and winding methods are required to complete experiments and produce qualified transformers. Designing a suitable coil mold is essential for winding the coil, as it ensures the coil's shape, size, and allowance, and saves time during winding.

[0003] Existing dry-type transformer coil molds are not convenient for quickly clamping and fixing rectangular spools of different sizes during use, which reduces the winding efficiency of dry-type transformer coils and increases the production cost of dry-type transformers.

[0004] Chinese patent discloses a dry-type transformer coil mold (authorization announcement number CN221668656U). This patented technology, through the setting of a clamping mechanism, facilitates the fixation of the spool. The spool is placed on the outside of the clamping component. The operator rotates the threaded sleeve, which rotates on the inner wall of the rotating component and moves on the surface of the screw. During the movement of the threaded sleeve, the rotating component moves synchronously, which drives the first and second connecting rods to rotate outward, causing the clamping component to move outward. The operator manually rotates the clamping component on the outside of the second connecting rod to make the outer side of the clamping component fit against the inner wall of the spool. When the threaded sleeve moves to the maximum distance, the clamping component presses against the inner wall of the spool to fix it. A baffle is set on the surface of the clamping component to limit the spool and prevent it from falling off. After fixation is completed, the limiting bolt is screwed into the threaded sleeve. One end of the limiting bolt presses against the surface of the screw to prevent the spool from loosening due to the rotation of the threaded sleeve during the rotation of the clamping mechanism.

[0005] However, it has certain drawbacks: it fixes the position of the threaded sleeve by pressing the limit bolt against the surface of the screw. In actual production, the motor drives the clamping mechanism to rotate, which will generate a certain vibration. The vibration will be transmitted to the limit bolt. Over time, the limit bolt will rotate due to the vibration, thus failing to press against the surface of the screw. This causes the threaded sleeve to rotate, which in turn causes the clamping part to loosen its fixation on the spool, making the spool risk detaching from the clamping mechanism when rotating. Summary of the Invention

[0006] The purpose of this invention is to provide an adjustable winding mold for dry-type transformers to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] An adjustable winding mold for a dry-type transformer includes a turntable and a rotating mechanism that drives the turntable to rotate. A rotating rod is fixedly connected to the left side surface of the turntable, and a clamping mechanism is provided at the left end of the rotating rod. The clamping mechanism includes an adjusting seat, and an adjusting rod is movably connected through the front surface of the adjusting seat. A gear is fixedly connected to the outside of the adjusting rod on the inside side of the adjusting seat. Racks are meshed on both sides of the gear. A clamping plate is fixedly connected to the end of the rack away from the adjusting seat. An elastic pad is fixedly connected to the side surface of the clamping plate away from the rack. A ratchet is fixedly connected to the outside of the adjusting rod in front of the adjusting seat. A positioning mechanism is provided on the front surface of the adjusting seat to the right of the ratchet.

[0009] As a further embodiment of this utility model: the rotating mechanism includes a support plate, a support base is fixedly connected to the lower end of the support plate, and a motor is fixedly connected to the right side surface of the support plate.

[0010] As a further embodiment of this utility model: the positioning mechanism includes a spring, a positioning block is fixedly connected to the upper end of the spring, and a pawl is fixedly connected to the lower end of the spring, and a positioning rod is rotatably connected to the right end of the pawl.

[0011] As a further embodiment of this utility model: the left end of the rotating rod is fixed to the right side surface of the adjusting seat, the rear end of the adjusting rod is rotatably connected to the inner rear surface of the adjusting seat, and the two racks are slidably connected to the inner left and right sides of the adjusting seat respectively.

[0012] As a further embodiment of this utility model: the turntable is located to the left of the support plate, and the output end of the motor is fixed to the right side surface of the turntable.

[0013] As a further embodiment of this utility model: the pawl is attached to the ratchet, and the rear ends of the positioning block and the positioning rod are both fixed to the front surface of the adjusting seat.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This invention features a clamping mechanism. Rotating the adjusting rod counter-clockwise within the clamping mechanism drives the gears to rotate, causing two racks to press against the inner wall of the dry-type transformer spool, thus fixing the spool in place. This mechanism is suitable for dry-type transformer spools of different sizes. The pawl in the positioning mechanism engages with the ratchet, preventing the ratchet from rotating clockwise, thereby avoiding clockwise rotation of the gears and preventing the clamps from loosening their fixation on the dry-type transformer spool. Attached Figure Description

[0016] Figure 1 A schematic diagram of the structure of an adjustable winding mold for a dry transformer;

[0017] Figure 2 This is a schematic diagram of the clamping mechanism in an adjustable winding mold for a dry transformer.

[0018] Figure 3 for Figure 2 A magnified view of A in the middle.

[0019] In the diagram: 1. Turntable; 2. Rotating mechanism; 3. Support plate; 4. Support base; 5. Motor; 6. Rotating rod; 7. Clamping mechanism; 8. Adjusting base; 9. Adjusting rod; 10. Gear; 11. Rack; 12. Clamping plate; 13. Elastic pad; 14. Ratchet; 15. Positioning mechanism; 16. Spring; 17. Positioning block; 18. Pawl; 19. Positioning rod. Detailed Implementation

[0020] Please see Figures 1-3 In this embodiment of the present invention, an adjustable winding mold for a dry-type transformer includes a turntable 1 and a rotating mechanism 2 that drives the turntable 1 to rotate. The rotating mechanism 2 includes a support plate 3. The turntable 1 is located to the left of the support plate 3. A support base 4 is fixedly connected to the lower end of the support plate 3. A motor 5 is fixedly connected to the right side surface of the support plate 3. The output end of the motor 5 is fixedly connected to the right side surface of the turntable 1. A rotating rod 6 is fixedly connected to the left side surface of the turntable 1.

[0021] A clamping mechanism 7 is provided at the left end of the rotating rod 6. The clamping mechanism 7 includes an adjusting seat 8. The left end of the rotating rod 6 is fixedly connected to the right side surface of the adjusting seat 8. An adjusting rod 9 is movably connected through the front surface of the adjusting seat 8. The rear end of the adjusting rod 9 is rotatably connected to the inner rear surface of the adjusting seat 8. A gear 10 is fixedly connected to the outside of the adjusting rod 9 on the inner side of the adjusting seat 8. A rack 11 is meshed on both the left and right sides of the gear 10. The two racks 11 are slidably connected to the inner left and right sides of the adjusting seat 8 respectively. A clamping plate 12 is fixedly connected to the end of the rack 11 away from the adjusting seat 8. An elastic pad 13 is fixedly connected to the side surface of the clamping plate 12 away from the rack 11.

[0022] Motor 5 is used to drive turntable 1 to rotate, which in turn drives clamping mechanism 7 to rotate via rotating rod 6, thereby winding the coil of dry transformer.

[0023] Rotating the adjusting rod 9 counterclockwise will cause the two racks 11 to move the clamping plate 12 away from the adjusting seat 8 until it presses against the inner wall of the dry-type transformer spool, thereby fixing the dry-type transformer spool in place. This method is suitable for dry-type transformer spools of different sizes.

[0024] The side surface of the clamp 12 away from the adjusting seat 8 is rectangular, which is suitable for fixing rectangular dry-type transformer spools. It can also be other shapes, which are suitable for dry-type transformer spools of corresponding shapes.

[0025] The elastic pad 13 is preferably made of rubber;

[0026] The distance between the two clamping plates 12 in the figure is at its maximum. When the end of one rack 11 is attached to the clamping plate 12 on the other rack 11, the distance between the two clamping plates 12 is at its minimum.

[0027] A ratchet 14 is fixedly connected to the outside of the adjusting rod 9 in front of the adjusting seat 8. A positioning mechanism 15 is provided on the front surface of the adjusting seat 8 to the right of the ratchet 14. The positioning mechanism 15 includes a spring 16. A positioning block 17 is fixedly connected to the upper end of the spring 16, and a pawl 18 is fixedly connected to the lower end of the spring 16. The pawl 18 is attached to the ratchet 14. A positioning rod 19 is rotatably connected to the right end of the pawl 18. The rear ends of the positioning block 17 and the positioning rod 19 are both fixedly connected to the front surface of the adjusting seat 8.

[0028] Pawl 18 engages with ratchet 14, allowing adjusting rod 9 to rotate counterclockwise but not clockwise. This prevents clamp 12 from moving away from the inner wall of the dry-type transformer spool, ensuring that clamp 12 remains in contact with the inner wall of the dry-type transformer spool and preventing any loosening of the spool. After pulling pawl 18 away from ratchet 14, adjusting rod 9 can be rotated clockwise as needed.

[0029] The working principle of this utility model is as follows: When winding the coil of a dry-type transformer, the dry-type transformer spool is first placed outside the clamping mechanism 7. Then, the adjusting rod 9 is rotated counterclockwise to drive the gear 10 to rotate. The two racks 11 meshing with the gear 10 will drive the clamping plate 12 to move away from the adjusting seat 8 until it is in contact with the inner wall of the dry-type transformer spool. The clamping plate 12 presses against the inner wall of the dry-type transformer spool, thereby fixing the dry-type transformer spool. Then, the adjusting rod 9 is released. At this time, the pawl 18 is in contact with the ratchet 14, so that the adjusting rod 9 will not reverse. Finally, the wire is wound around the outside of the dry-type transformer spool several times, and then the motor 5 is turned on to drive the clamping mechanism 7 to rotate, thereby performing the winding process.

[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

[0031] 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. An adjustable winding mold for a dry-type transformer, comprising a turntable (1) and a rotating mechanism (2) for rotating the turntable (1), wherein a rotating rod (6) is fixedly connected to the left side surface of the turntable (1), characterized in that, A clamping mechanism (7) is provided at the left end of the rotating rod (6). The clamping mechanism (7) includes an adjusting seat (8). An adjusting rod (9) is movably connected to the front surface of the adjusting seat (8). A gear (10) is fixedly connected to the outside of the adjusting rod (9) on the inside of the adjusting seat (8). A rack (11) is meshed on both the left and right sides of the gear (10). A clamping plate (12) is fixedly connected to the end of the rack (11) away from the adjusting seat (8). An elastic pad (13) is fixedly connected to the side surface of the clamping plate (12) away from the rack (11). A ratchet (14) is fixedly connected to the outside of the adjusting rod (9) in front of the adjusting seat (8). A positioning mechanism (15) is provided on the front surface of the adjusting seat (8) to the right of the ratchet (14).

2. The adjustable winding mold for a dry-type transformer according to claim 1, characterized in that, The rotating mechanism (2) includes a support plate (3), a support base (4) is fixedly connected to the lower end of the support plate (3), and a motor (5) is fixedly connected to the right side surface of the support plate (3).

3. The adjustable winding mold for a dry-type transformer according to claim 1, characterized in that, The positioning mechanism (15) includes a spring (16), with a positioning block (17) fixedly connected to the upper end of the spring (16) and a pawl (18) fixedly connected to the lower end of the spring (16). A positioning rod (19) is rotatably connected to the right end of the pawl (18).

4. The adjustable winding mold for a dry-type transformer according to claim 1, characterized in that, The left end of the rotating rod (6) is fixed to the right side surface of the adjusting seat (8), the rear end of the adjusting rod (9) is rotatably connected to the inner rear surface of the adjusting seat (8), and the two racks (11) are slidably connected to the inner left and right sides of the adjusting seat (8).

5. The adjustable winding mold for a dry-type transformer according to claim 2, characterized in that, The turntable (1) is located to the left of the support plate (3), and the output end of the motor (5) is fixed to the right side surface of the turntable (1).

6. The adjustable winding mold for a dry-type transformer according to claim 3, characterized in that, The pawl (18) is attached to the ratchet (14), and the rear ends of the positioning block (17) and the positioning rod (19) are fixed to the front surface of the adjusting seat (8).

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