90-degree wire bending device for transposed conductor of transformer coil

Abstract

The utility model discloses a 90-degree wire bending device for a transposed conductor of a transformer coil, which comprises two racks, an operating table is fixedly arranged at the upper ends of the racks, and a mounting frame is fixedly arranged in the middle of the upper end of the operating table; the rotating rods are arranged at the upper ends of the two sides of the mounting frame, the lower ends of the rotating rods extend to the position below a transverse plate of the mounting frame, sliding grooves are formed in the side walls of the front end and the rear end of the two sides of the mounting frame, a mounting lug plate is arranged between the sliding grooves in the two sides, and the mounting lug plate and the sliding grooves are in sliding limiting; a second fixing rod is fixedly arranged in the mounting lug plate, a transmission roller is arranged outside the second fixing rod, the transmission roller is rotationally connected with the second fixing rod, and the lower end of the transmission roller extends to the position below the mounting lug plate; the structure solves the problems that when the transposed conductor is bent, the conductor is prone to upwarp, and the clamping mechanism is difficult to adjust.

Description

Technical Field

[0001] The utility model relates to the technical field of transformer coils, in particular to a 90-degree bending device for transformer coil transposition conductors. Background Art

[0002] Transposed conductor is a specially designed conductor, which is mainly used in the winding manufacturing of large oil-immersed power transformers and large-capacity dry-type transformers. It is usually composed of multiple insulated flat wires arranged in a specific order. These flat wires are continuously woven and then wrapped with specific insulating materials to form a conductor structure with excellent electrical and mechanical properties. The design of the transposed conductor is to solve the problem of uneven current distribution in the transformer winding. Through reasonable wire arrangement and transposition, the current distribution in the winding is more uniform, thereby improving the efficiency and performance of the transformer. The 90-degree bending device for the transformer coil transposed conductor is one of the key devices used to achieve precise bending of the transposed conductor. By using this device, the transposed conductor can be bent quickly, efficiently and accurately, thereby meeting the needs of transformer winding manufacturing.

[0003] For example, the patent "A 90-degree bending device for transformer coil transposition conductor" with announcement number CN219958788U includes a movable pressure plate, a positioning pin is provided on the movable pressure plate, a bottom plate is provided under the movable pressure plate, nuts are provided under the bottom plate and above the movable pressure plate, a top wire tip block is provided on one side of the movable pressure plate, the movable pressure plate is installed on one side of the top wire tip block, an intermediate connecting seat is provided on one side of the top wire tip block, a connecting plate is provided on one side of the intermediate connecting seat, flat head screws are provided on the connecting plate and the bottom plate, the bottom plate and the connecting plate are detachably mounted on both sides of the intermediate connecting seat by flat head screws, an axle pin is fixedly connected to one side of the movable pressure plate, a sleeve is fixedly connected to one side of the connecting plate, and the axle pin is movably mounted in the sleeve.

[0004] Although the above-mentioned prior art can realize the bending of transposed conductors, in actual use, on the one hand, the conductors are easy to curl up when the transposed conductors are bent. When the extrusion block contacts the transposed conductors during the bending of the transposed conductors, the two ends of the transposed conductors curl up, resulting in uneven arrangement of the transposed conductors in the transformer windings, thereby affecting the uniform distribution of current in the windings. On the other hand, the clamping mechanism is difficult to adjust. When facing transposed conductors of different widths, it is necessary to replace the clamping mechanism that is compatible with them. As a result, the clamping mechanism needs to be replaced every time different transposed conductors are bent, thereby reducing the adaptability of the clamping mechanism. Therefore, it does not meet the existing needs. In this regard, we propose a 90-degree bending device for transformer coil transposed conductors. Utility Model Content

[0005] The utility model aims to provide a 90-degree bending device for transformer coil transposed conductors, so as to solve the problems in the above background technology that the transposed conductors are prone to warping when being bent and the clamping mechanism is difficult to adjust.

[0006] To achieve the above object, the utility model provides the following technical solution: a 90-degree bending device for transformer coil transposition conductor, comprising a frame, wherein two frames are provided, an operating table is fixedly provided at the upper end of the frame, and a mounting frame is fixedly provided at the middle position of the upper end of the operating table; and further comprising:

[0007] A rotating rod is arranged at the upper ends of both sides of the mounting frame, and the lower end of the rotating rod extends to the bottom of the horizontal plate of the mounting frame, and slide grooves are arranged on the side walls at the front and rear ends of both sides of the mounting frame, and a mounting ear plate is arranged between the slide grooves on both sides, the mounting ear plate and the slide groove are slidably limited, and the mounting ear plate is rotatably connected to the lower end of the rotating rod, a second fixing rod is fixedly arranged inside the mounting ear plate, and a transmission roller is arranged outside the second fixing rod, the transmission roller is rotatably connected to the second fixing rod, and the lower end of the transmission roller extends to the bottom of the mounting ear plate.

[0008] Preferably, motors are fixedly installed at the rear ends of both sides of the mounting frame, and the output shaft of the motor is extended to the bottom of the mounting frame cross plate and is rotatably connected to the front and rear side walls of the mounting frame. A driving roller is fixedly installed outside the output shaft of the motor located below the cross plate of the mounting frame, and the driving roller is located directly below the transmission roller.

[0009] Preferably, the operating table is provided with mounting seats above both sides of the mounting frame, and the middle position of the mounting seats is an open structure, and support rods are fixedly provided at the front and rear ends of the lower ends of the mounting seats, and the support rods are fixedly connected to the operating table.

[0010] Preferably, a retraction cavity is provided at the front and rear ends inside the mounting seat, a sliding rod is provided inside the retraction cavity, and the sliding rod slides with the retraction cavity, three first fixing rods are fixed inside the sliding rod near the middle position of the mounting seat, and the first fixing rods are equidistantly distributed, and a limiting roller is provided outside the first fixing rod.

[0011] Preferably, a spring is fixedly provided at one end of the sliding rod located inside the contraction cavity, and the other end of the spring is fixedly connected to the inner wall of the contraction cavity.

[0012] Preferably, a hydraulic telescopic device is fixedly provided at the middle position of the upper end of the mounting frame, and the telescopic end of the hydraulic telescopic device extends to the bottom of the mounting frame cross plate, and an extrusion block is fixedly provided at the lower end of the telescopic end of the hydraulic telescopic device located below the mounting frame cross plate.

[0013] Preferably, a forming seat is fixedly provided at the upper end of the operating table below the horizontal plate of the mounting frame, and the forming seat corresponds to the position of the extrusion block.

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

[0015] 1. The utility model can squeeze the upper and lower end surfaces of the transposed conductor through the driving roller and the transmission roller. When the transposed conductor is bent, the rotating rod is rotated. At this time, the rotating rod is rotated downward in the mounting frame through the external thread. At the same time, the mounting ear plate rotatably connected to the rotating rod is moved downward through the slide groove. When the mounting ear plate moves downward, the transmission roller is driven to move downward together until the distance between the driving roller and the transmission roller matches the thickness of the transposed conductor. At this time, the transposed conductor is squeezed by the driving roller and the transmission roller to avoid the transposed conductor from tilting when it is bent, so that the transposed conductor is arranged neatly in the transformer winding.

[0016] 2. The utility model can enable the clamping mechanism to clamp transposed conductors of different widths through the limiting rollers and the springs. When the transposed conductors are bent, the transposed conductors are aligned with the openings of the mounting seat and pushed into the mounting seat. At this time, the two ends of the transposed conductors squeeze the limiting rollers and make the sliding rods that fix the limiting rollers move into the contraction cavity. At this time, the springs inside the contraction cavity are in a compressed state. Until the sliding rods move to a suitable position, the transposed conductors pass through the limiting rollers at both ends and enter the limiting rollers on the other side, so that the clamping mechanism can clamp and fix transposed conductors of different widths, thereby improving the adaptability of the clamping device to different transposed conductors.

[0017] 3. The utility model can adjust the position of the transposed wire by providing a motor. When the transposed wire is bent, the transposed wire is squeezed by the driving roller and the transmission roller. The motor is turned on to make the output shaft of the motor drive the driving roller to rotate. The rotating driving roller drives the transposed wire to move through the friction between the transposed wire and the driving roller until the transposed wire moves to a suitable position and then performs the bending operation. The transposed wire can be positioned at a predetermined position, thereby improving the bending accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front view of the internal structure of the utility model;

[0019] Figure 2 It is a side view of the conveying structure of the utility model;

[0020] Figure 3 It is a side view of the limiting structure of the utility model;

[0021] Figure 4 For the utility model Figure 1 A partial enlarged view of area A.

[0022] In the figure: 1. frame; 2. operating table; 3. mounting frame; 4. hydraulic telescopic device; 5. extrusion block; 6. forming seat; 7. rotating rod; 8. slide groove; 9. mounting ear plate; 10. transmission roller; 11. driving roller; 12. motor; 13. support rod; 14. mounting seat; 15. sliding rod; 16. limiting roller; 17. first fixed rod; 18. second fixed rod; 19. contraction chamber; 20. spring. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0024] See also Figure 1-4 The utility model provides an embodiment: a 90-degree bending device for transformer coil transposition conductor, comprising a frame 1, wherein two frames 1 are provided, an operating table 2 is fixedly provided at the upper end of the frame 1, and a mounting frame 3 is fixedly provided at the middle position of the upper end of the operating table 2; and further comprising:

[0025] The rotating rod 7 is arranged at the upper ends of both sides of the mounting frame 3, and the lower end of the rotating rod 7 extends to the bottom of the horizontal plate of the mounting frame 3. The side walls at the front and rear ends of both sides of the mounting frame 3 are provided with slide grooves 8, and a mounting ear plate 9 is arranged between the slide grooves 8 on both sides. The mounting ear plate 9 and the slide groove 8 are slidably limited, and the mounting ear plate 9 is rotatably connected to the lower end of the rotating rod 7. A second fixing rod 18 is fixedly arranged inside the mounting ear plate 9, and a transmission roller 10 is arranged outside the second fixing rod 18. The transmission roller 10 is rotatably connected to the second fixing rod 18, and the lower end of the transmission roller 10 extends to below the mounting ear plate 9.

[0026] When in use, when the transposed conductor is bent, the rotating rod 7 is rotated, and at this time, the rotating rod 7 is rotated downward in the mounting frame 3 through the external thread, and at the same time, the mounting ear plate 9 rotatably connected to the rotating rod 7 is moved downward through the slide groove 8. When the mounting ear plate 9 moves downward, the driving roller 10 is driven downward together until the distance between the driving roller 11 and the driving roller 10 matches the thickness of the transposed conductor. At this time, the transposed conductor is squeezed by the driving roller 11 and the driving roller 10.

[0027] See also Figure 2 A motor 12 is fixedly provided at the rear ends of both sides of the mounting frame 3, and the output shaft of the motor 12 is extended to the bottom of the horizontal plate of the mounting frame 3 and is rotatably connected to the front and rear side walls of the mounting frame 3. The motor 12 is located below the horizontal plate of the mounting frame 3, and a driving roller 11 is fixedly provided outside the output shaft. The driving roller 11 is located directly below the transmission roller 10, so that the driving roller 11 can be rotated by the motor 12.

[0028] See also Figure 1 and Figure 3 A mounting seat 14 is provided above both sides of the operating table 2 and the mounting frame 3, and the middle position of the mounting seat 14 is an open structure. Support rods 13 are fixedly provided at the front and rear ends of the lower ends of the mounting seat 14, and the support rods 13 are fixedly connected to the operating table 2, so that the mounting seat 14 can be fixed on the operating table 2 through the support rods 13.

[0029] See also Figure 1 and Figure 4 A contraction cavity 19 is provided at the front and rear ends of the mounting seat 14, a sliding rod 15 is provided inside the contraction cavity 19, and the sliding rod 15 slides with the contraction cavity 19, and three first fixing rods 17 are fixedly provided inside the sliding rod 15 near the middle position of the mounting seat 14, and the first fixing rods 17 are equidistantly distributed, and a limiting roller 16 is provided outside the first fixing rod 17, so as to clamp the transposed conductor through the limiting roller 16.

[0030] See also Figure 3 A spring 20 is fixedly provided at one end of the sliding rod 15 located inside the contraction cavity 19 , and the other end of the spring 20 is fixedly connected to the inner wall of the contraction cavity 19 , so that the sliding rod 15 can be reset by the compressed spring 20 .

[0031] See also Figure 1 A hydraulic telescopic device 4 is fixedly provided at the middle position of the upper end of the mounting frame 3, and the telescopic end of the hydraulic telescopic device 4 extends to the bottom of the horizontal plate of the mounting frame 3. An extrusion block 5 is fixedly provided at the lower end of the telescopic end of the hydraulic telescopic device 4 located below the horizontal plate of the mounting frame 3, so as to facilitate the extrusion block 5 to move downward by driving the hydraulic telescopic device 4.

[0032] See also Figure 1 and Figure 2 A forming seat 6 is fixedly provided at the upper end of the operating table 2 below the horizontal plate of the mounting frame 3, and the forming seat 6 corresponds to the position of the extrusion block 5, so that the transposed conductor can be bent through the cooperation of the forming seat 6 and the extrusion block 5.

[0033] Working principle: When bending the transposed wire, align the transposed wire with the opening of the mounting seat 14 and push the transposed wire into the mounting seat 14. At this time, the two ends of the transposed wire squeeze the limiting roller 16 and make the sliding rod 15 that fixes the limiting roller 16 move into the contraction chamber 19. At this time, the spring 20 inside the contraction chamber 19 is in a compressed state. Until the sliding rod 15 moves to a suitable position, the transposed wire passes through the limiting rollers 16 at both ends and enters the limiting roller 16 on the other side. When bending the transposed wire, the transposed wire is squeezed by the driving roller 11 and the transmission roller 10, and the motor 12 is turned on, so that the output shaft of the motor 12 drives the driving roller 11 to rotate, and the rotating driving roller 11 drives the transposed wire to move through the friction between the transposed wire and the transposed wire until the transposed wire moves to a suitable position for bending.

[0034] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A 90-degree bending device for transformer coil transposition conductors, comprising a frame (1), wherein two frames (1) are provided, an operating table (2) is fixedly provided at the upper end of the frame (1), and a mounting frame (3) is fixedly provided at the middle position of the upper end of the operating table (2); Features: Also includes: A rotating rod (7) is arranged at the upper ends of both sides of the mounting frame (3), and the lower end of the rotating rod (7) extends to the bottom of the horizontal plate of the mounting frame (3). The side walls at the front and rear ends of both sides of the mounting frame (3) are provided with sliding grooves (8), and a mounting ear plate (9) is arranged between the sliding grooves (8) on both sides. The mounting ear plate (9) and the sliding groove (8) are slidably limited, and the mounting ear plate (9) is rotatably connected to the lower end of the rotating rod (7). A second fixing rod (18) is fixedly arranged inside the mounting ear plate (9), and a transmission roller (10) is arranged outside the second fixing rod (18). The transmission roller (10) is rotatably connected to the second fixing rod (18), and the lower end of the transmission roller (10) extends to the bottom of the mounting ear plate (9).

2. The 90-degree bending device for transformer coil transposition conductor according to claim 1, characterized in that: A motor (12) is fixedly arranged at the rear ends of both sides of the mounting frame (3), and the output shaft of the motor (12) is connected to the bottom of the horizontal plate of the mounting frame (3) and is rotatably connected to the front and rear side walls of the mounting frame (3). A driving roller (11) is fixedly arranged outside the output shaft of the motor (12) located below the horizontal plate of the mounting frame (3), and the driving roller (11) is located directly below the transmission roller (10).

3. The 90-degree bending device for transformer coil transposition conductor according to claim 1, characterized in that: The operating table (2) is provided with mounting seats (14) above both sides of the mounting frame (3), and the middle position of the mounting seats (14) is an open structure. The front and rear ends of the lower ends of the mounting seats (14) are fixedly provided with support rods (13), and the support rods (13) are fixedly connected to the operating table (2).

4. The 90-degree bending device for transformer coil transposition conductor according to claim 3, characterized in that: The front and rear ends of the mounting seat (14) are both provided with a contraction cavity (19), the contraction cavity (19) is provided with a sliding rod (15), and the sliding rod (15) and the contraction cavity (19) are slidably matched, and three first fixing rods (17) are fixedly provided inside the sliding rod (15) near the middle position of the mounting seat (14), and the first fixing rods (17) are equidistantly distributed, and a limiting roller (16) is provided outside the first fixing rod (17).

5. The 90-degree bending device for transformer coil transposition conductor according to claim 4, characterized in that: A spring (20) is fixedly arranged at one end of the sliding rod (15) located inside the contraction cavity (19), and the other end of the spring (20) is fixedly connected to the inner wall of the contraction cavity (19).

6. The 90-degree bending device for transformer coil transposition conductor according to claim 1, characterized in that: A hydraulic telescopic device (4) is fixedly arranged at the middle position of the upper end of the mounting frame (3), and the telescopic end of the hydraulic telescopic device (4) extends to below the horizontal plate of the mounting frame (3), and an extrusion block (5) is fixedly arranged at the lower end of the telescopic end of the hydraulic telescopic device (4) located below the horizontal plate of the mounting frame (3).

7. The 90-degree bending device for transformer coil transposition conductor according to claim 6, characterized in that: A forming seat (6) is fixedly provided at the upper end of the operating table (2) located below the horizontal plate of the mounting frame (3), and the forming seat (6) corresponds to the position of the extrusion block (5).

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