Stamping die for machining shell end socket of high-voltage mutual inductor

Abstract

The utility model discloses a stamping die for processing a high-voltage mutual inductor shell end socket, and relates to the technical field of end socket processing, the stamping die comprises a processing support, a hydraulic cylinder and a die holder, the peripheral surface of the die holder is provided with a movable groove, a rotating ring is arranged in the movable groove, and the peripheral surface of each rotating ring is provided with a long rod and a short rod; the driving mechanism comprises a rotating ring rotationally arranged in the die holder, a plurality of abutting columns are fixedly arranged on the rotating ring, and a plurality of rotating arc grooves matched with the abutting columns are formed in the inner wall of each rotating ring; a hydraulic cylinder drives a stamping head to move downwards for stamping, in the downward moving process, a driving column drives a rotating ring to rotate, a short rod rotates to push an alignment plate to move to align metal plates through cooperation of an abutting column and a rotating arc groove, after stamping is completed, a driving rod is reset to drive a gear ring to rotate reversely, and therefore the rotating ring drives a long rod to reset; and in the resetting process, the stamped sealing cover is jacked up, and discharging is convenient.

Description

Technical Field

[0001] This utility model relates to the field of end cap processing technology, specifically to a stamping die for processing end caps of high voltage transformer housings. Background Technology

[0002] High-voltage instrument transformers are electrical devices used to measure high voltage and high current. They consist of mutually insulated primary and secondary windings, an iron core, and insulation.

[0003] High voltage transformer housing end caps are components used to seal the ends of high voltage transformer housings. They are usually located at the top or bottom of a cylindrical housing and are connected to the cylinder by welding or other methods to serve as a whole, providing functions such as sealing, pressure bearing, and protection. The shapes of high voltage transformer housing end caps are usually spherical, elliptical, or dish-shaped.

[0004] Common spherical high-voltage transformer housing heads are usually produced by stamping. During stamping, a metal plate is placed on the bottom mold base, and then the stamping head is pressed against the metal plate by components such as hydraulic cylinders. The pressure of the hydraulic cylinders stamps the metal plate into a specific shape. Since the metal plate has a certain thickness, a lot of pressure is required to stamp the metal plate into the specified shape. After stamping, the outer circumference of the housing head is easily pressed tightly against the inner ring of the annular mold base, making it difficult to unload the head. Utility Model Content

[0005] The purpose of this invention is to provide a stamping die for processing the end caps of a high-voltage transformer housing, so as to overcome the above-mentioned shortcomings in the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a stamping die for processing the end cap of a high-voltage transformer housing, comprising a processing bracket and a hydraulic cylinder fixedly mounted on the top of the processing bracket. A die base is fixedly mounted at the bottom of the processing bracket. Four movable grooves are evenly opened on the outer circumferential surface of the die base. A rotating ring is rotatably mounted in each of the movable grooves. A long rod for lifting the end cap and a short rod for alignment are fixedly mounted on the outer circumferential surface of each rotating ring. The included angle between the long rod and the short rod is 90 degrees. A driving mechanism includes a rotating ring rotatably mounted in the die base. A plurality of abutment posts are fixedly mounted on the rotating ring. A plurality of rotating arc grooves adapted to the abutment posts are opened on the inner wall of each rotating ring.

[0007] Preferably, each of the movable slots is fixedly provided with a sleeve, and each of the sleeves has a relief groove at the top that is adapted to the abutment post. Each of the rotating rings is rotatably arranged on the outer circumference of the sleeve.

[0008] Preferably, each of the movable slots is fixedly provided with a fixing plate, and each fixing plate is slidably provided with an alignment rod. A spring is fixedly provided between the end of the alignment rod near the outer circumference of the mold base and the fixing plate.

[0009] Preferably, a lower pressure plate is slidably disposed on the processing bracket, and a punch head and a drive column are fixedly disposed at the bottom of the lower pressure plate, and the lower pressure plate is fixedly connected to the hydraulic cylinder.

[0010] Preferably, an arc-shaped toothed plate is fixedly disposed on the rotating ring, and a toothed ring that meshes with the arc-shaped toothed plate is rotatably disposed on the processing bracket.

[0011] Preferably, the outer circumferential surface of the drive column is provided with a drive groove, the drive groove including a vertical groove and a drive arc groove that are interconnected, and an abutment ball adapted to the drive groove is fixedly disposed inside the toothed ring.

[0012] In the above technical solution, this utility model provides a stamping die for processing the end cap of a high voltage transformer housing, which has the following beneficial effects: the stamping head is driven to move down for stamping by a hydraulic cylinder. During the downward movement, the rotating ring is driven to rotate by the drive column. The short rod rotates and pushes the alignment plate to move to align the metal plate by the cooperation of the abutment column and the rotating arc groove. After the stamping is completed, the toothed ring is reversed by the reset of the drive rod, thereby driving the long rod to reset by the rotating ring. During the reset process, the stamped end cap is lifted up, which facilitates unloading. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0014] Figure 1 A schematic diagram of the overall structure provided for an embodiment of this utility model;

[0015] Figure 2 This is a schematic diagram of the toothed ring provided in an embodiment of the present utility model;

[0016] Figure 3 This is a schematic diagram of the long rod in its initial state as provided in an embodiment of the present invention.

[0017] Figure 4 A schematic diagram of the structure of the drive column provided in an embodiment of this utility model;

[0018] Figure 5 A schematic diagram of the structure of the rotating ring provided in an embodiment of this utility model;

[0019] Figure 6 Provided for the embodiments of this utility model Figure 3 Enlarged view of the structure at point A in the middle.

[0020] Explanation of reference numerals in the attached figures:

[0021] 1. Machining bracket; 2. Hydraulic cylinder; 3. Lower pressure plate; 4. Punch head; 5. Die base; 6. Movable groove; 7. Rotating ring; 8. Abutment post; 9. Sleeve; 901. Clearance groove; 10. Rotating ring; 101. Rotating arc groove; 11. Long rod; 12. Short rod; 13. Fixing plate; 14. Alignment rod; 15. Spring; 16. Arc-shaped toothed plate; 17. Toothed ring; 18. Abutment ball; 19. Drive post; 20. Vertical groove; 21. Drive arc groove. Detailed Implementation

[0022] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0023] Please see Figure 1-6 A stamping die for processing the end cap of a high-voltage transformer housing. The technical solution proposed in this utility model includes a processing bracket 1 and a hydraulic cylinder 2 fixedly mounted on the top of the processing bracket 1. A die base 5 is fixedly mounted at the bottom of the processing bracket 1. Four movable grooves 6 are evenly distributed on the outer circumference of the die base 5. A rotating ring 10 is rotatably mounted in each movable groove 6. A long rod 11 for lifting the end cap and a short rod 12 for alignment are fixedly mounted on the outer circumference of each rotating ring 10. The included angle between the long rod 11 and the short rod 12 is 90 degrees. A driving mechanism includes a rotating ring 7 rotatably mounted within the die base 5. Several... The dry abutment post 8, and each rotating ring 10 has multiple rotating arc grooves 101 adapted to the abutment post 8 on its inner wall; the mold base 5 is used to place and support the metal plate. The mold base 5 has a ring structure, and four movable grooves 6 are evenly opened on the outer circumference of the mold base 5. Each rotating ring 10 is rotatably set in the corresponding movable groove 6. The long rod 11 and the short rod 12 are L-shaped. The mold base 5 has an annular groove for the rotating ring 7 to rotate. The abutment post 8 is fixedly set on the top of the rotating ring 7. The cross-section of the rotating ring 7 is circular. The size and spacing of the rotating arc grooves 101 on the inner wall of the rotating ring 10 are adapted to the abutment gear and the spacing, such as Figure 3As shown, in the initial state, each long rod 11 is located in the inner ring of the mold base 5. A metal plate is placed on the mold base 5, and the stamping device is moved downwards by the hydraulic cylinder 2. When the hydraulic cylinder 2 moves downwards, it drives the rotating ring 7 to rotate around the axis of the mold base 5. As the rotating ring 7 rotates, its upper abutment post 8 sequentially engages with the corresponding rotating arc groove 101. The abutment post 8 against the inner wall of the rotating arc groove 101 drives the rotating ring 10 to rotate outwards by 180 degrees, thereby causing the long rod 11 to rotate downwards and the short rod 12 to rotate upwards. After the four short rods 12 rotate upward 180 degrees, they extend from the mold base 5 and stand vertically. They can push the outer circumference of the metal plate placed on the mold base 5 to align, thereby moving the metal plate to the center position of the mold base 5. After the stamping is completed, the hydraulic cylinder 2 moves upward. At this time, the hydraulic cylinder 2 drives the rotating ring 7 to reverse, thereby returning the long rod 11 to the initial position. Since the metal plate is stamped into a semi-circle with the bottom lower than the mold base 5, when the long rod 11 is reset, it will lift the end cap, thus making it easy to remove the stamped end cap.

[0024] Specifically, each movable groove 6 is fixedly provided with a sleeve 9, and each sleeve 9 has a relief groove 901 adapted to the abutment post 8 on its top. Each rotating ring 10 is rotatably arranged on the outer circumference of the sleeve 9. The two ends of the sleeve 9 are fixedly connected to the two inner side walls of the movable groove 6. The size of the relief groove 901 is adapted to the size of the abutment post 8. The sleeve 9 can support the rotating ring 10 and increase the stability of the rotating ring 10.

[0025] Specifically, each movable slot 6 is fixedly equipped with a fixing plate 13, and each fixing plate 13 is slidably equipped with an alignment rod 14. A spring 15 is fixedly installed between the end of the alignment rod 14 near the outer periphery of the mold base 5 and the fixing plate 13. The fixing plates 13 are evenly distributed on the mold base 5. The metal plates are circular, and when placed on the mold base 5, they are positioned between the four alignment rods 14. The bottom of each alignment rod 14 slides on the top of the mold base 5. Initially, the springs 15 allow each alignment rod 14 to be positioned away from the axis of the mold base 5. The alignment rod 14 is T-shaped, with its short arm end positioned on the fixing plate 13 near the axis of the mold base 5. The long arm end of the alignment rod 14 is extendable and retractable, and a portion of the long arm end is slidably connected to the fixing plate 13. Figure 6 As shown, when the displacement end of the hydraulic cylinder 2 moves down and drives the rotating ring 10 to rotate clockwise, causing the short rod 12 to rotate upward by 180 degrees, the short rod 12 will push the tail end of the alignment rod 14 to move closer to the metal plate during the rotation process. This will push the alignment plate to move through the spring 15, thereby pushing the metal plate to the center position of the mold base 5, preventing the metal plate from shifting during stamping and causing defective products. When the short rod 12 is reset, the alignment plate can also be reset through the spring 15.

[0026] Specifically, a lower pressure plate 3 is slidably mounted on the processing bracket 1. A punching head 4 and a drive column 19 are fixedly mounted on the bottom of the lower pressure plate 3. The lower pressure plate 3 is fixedly connected to the hydraulic cylinder 2. The moving end of the hydraulic cylinder 2 is fixedly connected to the lower pressure plate 3. The punching head 4 is used to punch the metal plate to make the metal plate into a semi-circular end cap. When in use, the hydraulic cylinder 2 is started to move downward. When the hydraulic cylinder 2 moves downward, it drives the lower pressure plate 3 to move downward, thereby driving the punching head 4 and the drive column 19 to move downward together. When the drive column 19 moves downward, it drives the rotating ring 7 to rotate.

[0027] Specifically, an arc-shaped toothed plate 16 is fixedly mounted on the rotating ring 7, and a toothed ring 17 that meshes with the arc-shaped toothed plate 16 is rotatably mounted on the processing bracket 1; a groove is provided on the side of the mold base 5 near the drive column 19 to expose the rotating ring 7. The arc-shaped toothed plate 16 has the same curvature as the rotating ring 7 and is fixedly mounted on the upper side of the rotating ring 7. A base plate for supporting the mold base 5 is provided at the bottom of the processing bracket 1, and the toothed ring 17 is mounted on the base. The sleeve 9 and the rotating ring 10 both have curvatures that match the rotating ring 7. When the lower pressure plate 3 drives the drive column 19 to move down, the drive column 19 drives the toothed ring 17 to rotate. When the toothed ring 17 rotates, it drives the rotating ring 7 to rotate through the arc-shaped toothed plate 16, thereby driving the rotating ring 10 to rotate through the abutting column 8 and the rotating arc groove 101. A cylinder is rotatably mounted at the bottom of the toothed ring 17, and the cylinder supports the toothed ring 17.

[0028] Specifically, the outer circumferential surface of the drive column 19 is provided with a drive groove, which includes a vertical groove 20 and a drive arc groove 21 that are interconnected. An abutment ball 18 adapted to the drive groove is fixedly installed inside the gear ring 17. The vertical groove 20 is located above the drive arc groove 21. Initially, the abutment ball 18 is at the lowest end of the drive groove, and the lower pressure plate 3 is located below the top of the processing bracket 1. When the disc-shaped metal plate is placed on the mold base 5, the hydraulic cylinder 2 is activated. The hydraulic cylinder 2 drives the lower pressure plate 3 to move downwards. When the lower pressure plate 3 moves downwards, it drives the drive column 19 to move downwards. At this time, the drive arc groove 21 and the abutment ball 18 on the drive column 19 drive the gear ring 17 to rotate. When the abutment ball 18 on the gear ring 17 moves into the vertical groove 20, the gear ring 17 stops rotating. At this time, the gear ring 17... The arc-shaped toothed plate 16 drives the rotating ring 7 to rotate, causing the rotating ring 10 to rotate 180 degrees. When the abutting ball 18 enters the vertical groove 20, as the hydraulic cylinder 2 presses down the lower pressure plate 3, the stamping head 4 gradually abuts against the aligned metal plate on the mold base 5, thereby stamping the metal plate. After the stamping is completed, the bottom of the semi-circular metal plate is lower than the height of the long rod 11 in the initial state. At this time, the hydraulic cylinder 2 returns, driving the lower pressure plate 3 to move upward, thereby causing the drive column 19 to move upward. During the upward movement of the drive column 19, the abutting ball 18 re-enters the drive arc groove 21 and moves to the bottom of the drive arc groove 21. At this time, the toothed ring 17 reverses, thereby causing the long rod 11 to rotate 180 degrees to reset. During the reset process, the semi-circular cover is lifted up, making it easy to remove the cover from the mold base 5.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A stamping die for machining the end cap of a high-voltage transformer housing, comprising a machining support (1) and a hydraulic cylinder (2) fixedly mounted on the top of the machining support (1), characterized in that, The processing support (1) is fixedly provided with a mold base (5) at the bottom. The outer circumferential surface of the mold base (5) is evenly provided with four movable grooves (6). Each movable groove (6) is rotatably provided with a rotating ring (10). Each rotating ring (10) is fixedly provided with a long rod (11) for lifting the end cap and a short rod (12) for alignment. The included angle between the long rod (11) and the short rod (12) is 90 degrees. The driving mechanism includes a rotating ring (7) rotatably disposed in the mold base (5), and a plurality of abutting posts (8) are fixedly disposed on the rotating ring (7). Each rotating ring (10) has a plurality of rotating arc grooves (101) adapted to the abutting posts (8) on its inner wall.

2. The stamping die for processing the end cap of a high-voltage transformer housing according to claim 1, characterized in that, Each of the movable slots (6) is fixedly provided with a sleeve (9), and each of the sleeves (9) has a relief groove (901) on its top that is adapted to the abutment post (8). Each of the rotating rings (10) is rotatably arranged on the outer circumference of the sleeve (9).

3. A stamping die for processing the end caps of a high-voltage transformer housing according to claim 2, characterized in that, Each of the movable slots (6) is fixedly provided with a fixing plate (13) on its upper part. Each of the fixing plates (13) is slidably provided with a positioning rod (14). A spring (15) is fixedly provided between the end of the positioning rod (14) near the outer periphery of the mold base (5) and the fixing plate (13).

4. A stamping die for processing the end cap of a high-voltage transformer housing according to claim 3, characterized in that, The processing bracket (1) is slidably provided with a lower pressure plate (3), and the bottom of the lower pressure plate (3) is fixedly provided with a punch head (4) and a drive column (19). The lower pressure plate (3) is fixedly connected to the hydraulic cylinder (2).

5. The stamping die for processing the cover head of the high-voltage transformer shell according to claim 4, characterized in that, An arc-shaped toothed plate (16) is fixedly provided on the rotating ring (7), and a toothed ring (17) that meshes with the arc-shaped toothed plate (16) is rotatably provided on the processing bracket (1).

6. A stamping die for processing the end caps of a high-voltage transformer housing according to claim 5, characterized in that, The outer circumferential surface of the drive column (19) is provided with a drive groove, which includes a vertical groove (20) and a drive arc groove (21) that are connected to each other. The toothed ring (17) is fixedly provided with an abutment ball (18) that is adapted to the drive groove.

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