Power transformer iron core welding device

Abstract

The utility model relates to the technical field of iron core welding, in particular to a power transformer iron core welding device which comprises an operation table, the top face of the operation table is fixedly connected with an n-shaped frame, a reversing mechanism is arranged in the n-shaped frame, a welding mechanism is arranged on the top face of the n-shaped frame, the reversing mechanism comprises two gear rings arranged in parallel, and the two gear rings are arranged in parallel. Four L-shaped connecting plates are annularly arranged between the interiors of the two gear rings at equal angles, L-shaped supporting plates are fixedly connected to the interiors of the L-shaped connecting plates, and cylindrical sleeves are fixedly embedded into the L-shaped supporting plates. According to the utility model, the iron core which is not welded can be fixed through the eight first electric push rods and the springs between the two sleeve rods at the opposite positions, silicon steel sheets forming the iron core can be prevented from being dispersed, and then the surface of the iron core can be changed by rotating the two gear rings by 90 degrees, so that a worker does not need to manually change the surface; therefore, the surface changing time can be saved, and the welding efficiency of the iron core is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of iron core welding, in particular to a welding device for a power transformer iron core. Background Art

[0002] A power transformer is a soft magnetic electromagnetic component, and its main functions are power transmission, voltage transformation and insulation isolation. A power transformer generally consists of a transformer skeleton, a coil winding, an insulating tape, an iron core and a housing. The power transformer iron core is usually stacked by silicon steel sheets. In order to improve the connection firmness between the silicon steel sheets and extend the service life of the transformer, a welding device is usually used to weld multiple silicon steel sheets together.

[0003] At present, most of the existing power transformer iron cores are square structures. When welding multiple silicon steel sheets together, in order to increase the connection firmness between the silicon steel sheets, welding is usually performed on each side of the iron core. At present, in order to improve the welding efficiency, two welding heads are usually set in the existing welding device, but most of them can only weld the opposite sides of the iron core at the same time. When welding the other two sides, the iron core needs to be removed from the fixture, and then the un-welded side of the iron core is aligned with the welding head. The operation is troublesome and time-consuming, resulting in a low welding efficiency of the iron core. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a welding device for a power transformer iron core to solve the problems put forward in the above background art.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A welding device for a power transformer iron core, including an operating table, a U-shaped frame is fixedly connected to the top surface of the operating table, a commutation mechanism is arranged inside the U-shaped frame, a welding mechanism is arranged on the top surface of the U-shaped frame, the commutation mechanism includes two parallel tooth rings, four L-shaped connecting plates are annularly and equally angularly arranged between the two tooth rings, an L-shaped supporting plate is fixedly connected inside the L-shaped connecting plate, a cylindrical sleeve is fixedly embedded inside the L-shaped supporting plate, two sleeve rods are slidably sleeved at both ends inside the cylindrical sleeve, a spring is fixed between the two sleeve rods in the same cylindrical sleeve, a clamping plate is fixedly connected between the two sleeve rods at the relative positions, and an electric push rod one fixed to the corresponding L-shaped connecting plate is fixedly connected to the inner wall of the tooth ring corresponding to the L-shaped connecting plate.

[0007] Furthermore, on the opposite inner sides of the U-shaped frame, there are connecting blocks fixedly connected. On the opposite sides of the two connecting blocks, there are cross-shaped frames fixedly connected. At the four ends of the opposite sides of the two cross-shaped frames, there are connecting rods rotatably connected. On the outer wall of the connecting rod, there are two symmetric limiting blocks that are closely attached to the side surface of the corresponding gear ring.

[0008] Furthermore, on both sides at one end of the top surface of the operating table, there are support blocks fixedly connected. At one end of the top surface of the operating table, there is a first backing plate fixedly connected. Between the two support blocks, there is a rotating shaft rotatably connected. At both ends of the outer wall of the rotating shaft, there are first gears fixedly connected that mesh with the corresponding gear rings. On the top surface of the first backing plate, there is a first motor fixedly connected. The output end of the first motor penetrates through the corresponding support block and is fixedly connected to the rotating shaft.

[0009] Preferably, on two adjacent side surfaces of the clamping plate, there are arc-shaped plates fixedly connected.

[0010] Furthermore, a rectangular hole is penetrated and opened on the top surface of the U-shaped frame. The welding mechanism includes two symmetric lead screws that rotate between the side surfaces at both ends inside the rectangular hole. On the outer walls of the two lead screws, there is a slider in screw-threaded connection. Through the top surface of the slider, there is a second electric push rod fixedly connected. The output end of the second electric push rod is fixedly connected to a welding head.

[0011] Furthermore, at the top end of one side surface of the U-shaped frame, there is a second backing plate fixedly connected. One end of the lead screw penetrates through the side surface of the U-shaped frame and is fixedly connected to a second gear. On the top surface of the second backing plate, there is a second motor fixedly connected. The output end of the second motor is fixedly connected to a third gear that meshes with the two second gears.

[0012] Compared with the prior art, the beneficial effects of the present utility model are:

[0013] Through the springs between the eight first electric push rods and the two sleeve rods at the corresponding positions, the un-welded iron cores can be fixed, preventing the silicon steel sheets that make up the iron cores from spreading. Then, by rotating the two gear rings by 90 degrees, the iron cores can be turned over, eliminating the need for manual turning by workers, thus saving the time for turning over and improving the welding efficiency of the iron cores. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0015] Figure 2 is a schematic diagram of the operating table in the present utility model;

[0016] Figure 3 is a schematic diagram of the structure of the commutation mechanism in the present utility model;

[0017] Figure 4It is a schematic diagram of the L-shaped connecting plate in the utility model;

[0018] Figure 5 It is a schematic diagram of the cross in the utility model;

[0019] Figure 6 It is a schematic diagram of the structure of the welding mechanism in the utility model.

[0020] In the figure: 1, operating table; 11, U-shaped frame; 12, connecting block; 13, support block; 14, first backing plate; 15, rectangular hole; 16, second backing plate; 2, commutation mechanism; 21, gear ring; 22, L-shaped connecting plate; 221, L-shaped supporting plate; 222, cylindrical sleeve; 223, sleeve rod; 224, clamping plate; 225, first electric push rod; 226, arc-shaped plate; 23, cross; 231, connecting rod; 232, limiting block; 24, first gear; 25, first motor; 3, welding mechanism; 31, lead screw; 32, slider; 33, second electric push rod; 34, welding head; 35, second gear; 36, second motor; 37, third gear. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0022] Please refer to Figures 1 to 6 , in the embodiment of the present utility model, a power transformer core welding device includes an operating table 1. The top surface of the operating table 1 is fixedly connected with a U-shaped frame 11. A commutation mechanism 2 is arranged inside the U-shaped frame 11. A welding mechanism 3 is arranged on the top surface of the U-shaped frame 11. The commutation mechanism 2 includes two parallel gear rings 21. Four L-shaped connecting plates 22 are annularly and equally angularly arranged between the two gear rings 21. An L-shaped supporting plate 221 is fixedly connected inside the L-shaped connecting plate 22. A cylindrical sleeve 222 is fixedly embedded inside the L-shaped supporting plate 221. Both ends of the inside of the cylindrical sleeve 222 are slidably sleeved with sleeve rods 223. A spring is fixed between the two sleeve rods 223 in the same cylindrical sleeve 222. A clamping plate 224 is fixedly connected between the two sleeve rods 223 at the relative positions. The inner wall of the gear ring 21 is fixedly connected with a first electric push rod 225 corresponding to the L-shaped connecting plate 22 and fixed to the L-shaped connecting plate 22 at the corresponding position.

[0023] Specifically, first place the square iron core between two gear rings 21, and then start eight first electric push rods 225 to move four L-shaped connecting plates 22 towards the middle until the four corners of the square iron core are respectively located within the L-shaped supporting plates 221 at corresponding positions, and the opposite side surfaces at the four corners of the iron core are clamped by the clamping plates 224 at corresponding positions, which can prevent the silicon steel sheets forming the iron core from spreading. Then, use the welding mechanism 3 to weld the top surface of the iron core. When the welding of the top surface of the iron core is completed, rotate the two gear rings 21 to rotate the iron core until the next side surface of the iron core faces upwards, and then use the welding mechanism 3 to weld the side surface of the iron core. With the same operation, until all four side surfaces of the iron core are welded. Then, start eight first electric push rods 225 to move the four L-shaped connecting plates 22 away from each other (when starting eight first electric push rods 225, the staff needs to hold the iron core by hand to prevent it from falling) until the staff takes away the welded iron core and replaces it with an unwelded iron core. This device can realize the automatic surface-changing operation of the iron core without manual surface-changing by the staff, thus saving the time for surface-changing and improving the welding efficiency of the iron core.

[0024] Embodiment 1

[0025] As Figure 2-5 shown, in this embodiment, connecting blocks 12 are fixedly connected to the opposite side surfaces inside the C-shaped frame 11. Crosses 23 are fixedly connected to the opposite side surfaces of the two connecting blocks 12. Four ends of the opposite side surfaces of the two crosses 23 are rotatably connected with connecting rods 231. Limiting blocks 232 that are symmetrically arranged and closely attached to the side surfaces of the corresponding gear rings 21 are fixedly connected to the outer walls of the connecting rods 231. Support blocks 13 are fixedly connected to both sides at one end of the top surface of the operating table 1. A cushion plate 14 is fixedly connected to one end of the top surface of the operating table 1. A rotating shaft is rotatably connected between the two support blocks 13. Gears 24 that mesh with the corresponding gear rings 21 are fixedly connected to both ends of the outer wall of the rotating shaft. A first motor 25 is fixedly connected to the top surface of the cushion plate 14. The output end of the first motor 25 penetrates through the corresponding support block 13 and is fixed to the rotating shaft. Arc-shaped plates 226 are fixedly connected to two adjacent side surfaces of the clamping plate 224.

[0026] In this embodiment, the corresponding gear ring 21 can be limited by the cross 23 and the eight limiting blocks 232 at the corresponding positions to prevent the gear ring 21 from falling and ensure that the gear ring 21 can rotate normally. The driving of the first motor 25 can make the two gears 24 drive the corresponding gear rings 21 to rotate respectively. The rotating gear rings 21 can make the four L-shaped connecting plates 22 at corresponding positions rotate under the action of the first electric push rods 225 at corresponding positions. Therefore, the rotation of the iron core can be realized without manual surface-changing by the staff, thus saving the time for surface-changing and improving the welding efficiency of the iron core.

[0027] Embodiment 2

[0028] like Figure 2 and Figure 6 As shown, in this embodiment, a rectangular hole 15 is penetrated through the top surface of the mold frame 11, and the welding mechanism 3 includes two symmetrical screw rods 31 that rotate between the two end sides of the rectangular hole 15, and the outer walls of the two screw rods 31 are screwed together with a slider 32, and an electric push rod 2 33 is fixedly penetrated through the top surface of the slider 32, and the output end of the electric push rod 2 33 is fixedly connected to a welding head 34, and a pad 2 16 is fixedly connected to the top of one side of the mold frame 11, one end of the screw rod 31 penetrates the side of the mold frame 11 and is fixedly connected to a gear 2 35, and a motor 2 36 is fixedly connected to the top surface of the pad 2 16, and a gear 3 37 meshing with the two gears 2 35 is fixedly connected to the output end of the motor 2 36.

[0029] In this embodiment, the drive of motor 2 36 can make gear 3 37 drive two gears 2 35 to rotate, so that the two screw rods 31 can rotate, and the two rotating screw rods 31 can make the slider 32 drive the electric push rod 2 33 and the welding head 34 to move, and then the welding head 34 can be moved downward by the action of the electric push rod 2 33, so that the welding head 34 can weld each silicon steel sheet together.

[0030] 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.

[0031] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A power transformer core welding device, characterized in that: The invention comprises an operating table (1), the top surface of the operating table (1) is fixedly connected to a profile frame (11), a reversing mechanism (2) is arranged inside the profile frame (11), a welding mechanism (3) is arranged on the top surface of the profile frame (11), the reversing mechanism (2) comprises two parallel gear rings (21), four L-shaped connecting plates (22) are arranged at equal angles in an annular manner between the two gear rings (21), an L-shaped supporting plate (221) is fixedly connected inside the L-shaped connecting plate (22), and the L A cylindrical sleeve (222) is embedded and fixed inside the L-shaped support plate (221), sleeve rods (223) are slidably sleeved at both ends of the cylindrical sleeve (222), a spring is fixed between two sleeve rods (223) in the same cylindrical sleeve (222), a clamping plate (224) is fixedly connected between two sleeve rods (223) at opposite positions, and an electric push rod (225) fixed to the L-shaped connecting plate (22) at the corresponding position is fixedly connected to the inner wall of the gear ring (21).

2. A power transformer core welding device according to claim 1, characterized in that: The two opposite side surfaces inside the molded frame (11) are fixedly connected with connecting blocks (12), the opposite side surfaces of the two connecting blocks (12) are fixedly connected with crosses (23), the four ends of the opposite side surfaces of the two crosses (23) are rotatably connected with connecting rods (231), and the outer wall of the connecting rod (231) is fixedly connected with two symmetrical limit blocks (232) that are tightly attached to the side surfaces of the gear ring (21) at corresponding positions.

3. A power transformer core welding device according to claim 2, characterized in that: Support blocks (13) are fixedly connected to both sides of one end of the top surface of the operating table (1), a pad plate (14) is fixedly connected to one end of the top surface of the operating table (1), a rotating shaft is rotatably connected between the two support blocks (13), a gear (24) meshing with a gear ring (21) at a corresponding position is fixedly connected to both ends of the outer wall of the rotating shaft, a motor (25) is fixedly connected to the top surface of the pad plate (14), and an output end of the motor (25) passes through the support block (13) at the corresponding position and is fixed to the rotating shaft.

4. A power transformer core welding device according to claim 3, characterized in that: Two adjacent side surfaces of the clamping plate (224) are fixedly connected with an arc-shaped plate (226).

5. The power transformer core welding device according to claim 1, characterized in that: A rectangular hole (15) is formed through the top surface of the mold frame (11), and the welding mechanism (3) comprises two symmetrical screw rods (31) that rotate between the two end sides of the rectangular hole (15), and the outer walls of the two screw rods (31) are screwed together with a slider (32), and an electric push rod (33) is fixed through the top surface of the slider (32), and the output end of the electric push rod (33) is fixedly connected to a welding head (34).

6. A power transformer core welding device according to claim 5, characterized in that: A backing plate 2 (16) is fixedly connected to the top of one side of the molded frame (11), one end of the screw rod (31) passes through the side of the molded frame (11) and is fixedly connected to a gear 2 (35), a top surface of the backing plate 2 (16) is fixedly connected to a motor 2 (36), and an output end of the motor 2 (36) is fixedly connected to a gear 3 (37) meshing with the two gears 2 (35).

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