A universal casting mold for a mutual inductor

Abstract

The application discloses a general pouring mold for a mutual inductor, and relates to the technical field of high-voltage mutual inductor manufacturing.The general pouring mold comprises a supporting operating part, a moving unit, a mold unit and a sliding groove.The moving unit is arranged on the supporting operating part, the mold unit is arranged on the moving unit, the mold unit is in sliding connection with the supporting operating part, and the inner wall of the supporting operating part is provided with the sliding groove.The mold is poured from the bottom to the top in cooperation with a pouring pipe guide by abandoning a single upper pouring opening, air is discharged through an exhaust assembly when material is filled, the outlet can be automatically sealed when the material contacts the exhaust assembly, air residues are eliminated, surface defects and internal bubbles are avoided, manual repair is not needed, cost and the defective rate are reduced, the driving assembly drives the impact plate and the damping spring to flexibly impact the mold closing assembly in a small amplitude, the material adhesion is improved, small bubbles are avoided, and the product compactness and electrical performance are ensured.

Description

Technical Field

[0001] This invention relates to the field of high voltage transformer manufacturing technology, and in particular to a universal casting mold for transformers. Background Technology

[0002] In the power and electronics fields, the reliability of instrument transformers is highly dependent on their insulation performance. Epoxy resin casting has become the mainstream insulation technology for medium and high voltage and outdoor instrument transformers. This process not only provides electrical insulation strength, but also forms a robust sealing protective layer that effectively resists the erosion of complex outdoor environments such as sunlight, rain, and temperature differences, thereby ensuring the long-term stable operation of the instrument transformer.

[0003] Currently, the casting molds used for current transformers are designed with only one upper pouring port. In actual casting operations, after the casting material is injected from the top of the mold, a large amount of gas inside the mold is difficult to be discharged in a timely and sufficient manner. The gas remains inside the casting material, resulting in a large number of defects on the surface of the formed current transformer. In addition, due to the characteristics of the casting process, air bubbles are easily generated inside the casting part. These air bubbles will also damage the casting integrity of the current transformer and affect the product quality. Summary of the Invention

[0004] In view of the problems existing in the general casting molds for current transformers, the present invention is proposed.

[0005] Therefore, the present invention provides a universal casting mold for current transformers, the purpose of which is to solve the problem that current current transformer casting molds only have one upper pouring port, which makes it difficult for internal gas to be discharged in time during casting, resulting in many defects on the surface of the molded product, and at the same time, air bubbles are easily generated inside the casting part, which destroys the integrity of the casting.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a universal casting mold for current transformers, including a supporting operating component, a moving unit, a mold unit, and a sliding groove; the moving unit is provided on the supporting operating component, the mold unit is provided on the moving unit, and the mold unit is slidably connected to the supporting operating component, and the inner wall of the supporting operating component is provided with a sliding groove; the moving unit includes a driving component fixedly installed on the supporting operating component, and a pushing component fixedly installed on the driving component, and the pushing component is slidably connected to the supporting operating component; the mold unit includes a mold closing component fixedly installed on the pushing component, an venting component fixedly installed on the inner wall of the mold closing component, and an installation component rotatably installed on the supporting operating component.

[0007] As a preferred embodiment of the universal casting mold for current transformers described in this invention, the drive assembly includes a motor fixedly mounted on a support operating component, a rotating collar fixedly mounted on the output end of the motor, a connecting rod one fixedly mounted on the outer wall of the rotating collar, a rotating shaft one rotatably mounted on the connecting rod one, a connecting rod two fixedly mounted on the outer wall of the rotating shaft one, a rotating shaft two rotatably mounted on the other end of the connecting rod two, and a movable plate fixedly mounted on the rotating shaft two.

[0008] As a preferred embodiment of the universal casting mold for current transformers described in this invention, a limiting plate is fixedly installed on the top of the movable plate, and the limiting plate is slidably connected to the supporting operating component.

[0009] As a preferred embodiment of the universal casting mold for current transformers described in this invention, the pushing assembly includes a movable component fixedly mounted on a movable plate, a connecting plate fixedly mounted on the movable component, and a pushing component fixedly mounted on the connecting plate, wherein the pushing component is fixedly connected to the mold closing assembly.

[0010] As a preferred embodiment of the universal casting mold for the current transformer described in this invention, a buffer component is fixedly installed on the moving part, an impact plate is fixedly installed on the other end of the buffer component, a damping spring is fixedly installed on the outer wall of the buffer component, and the damping spring is connected to the impact plate and the moving part. A limit block is fixedly installed on the top of the moving part, and the limit block is slidably connected to the support operating component.

[0011] As a preferred embodiment of the universal casting mold for current transformers described in this invention, the mold assembly includes a mold plate fixedly mounted on a pusher, a mold assembly fixedly mounted on the mold plate, a casting component fixedly mounted on the mold assembly, a casting pipe fixedly mounted on the casting component, and a fitting groove fixedly mounted on the inner wall of the mold assembly, wherein the fitting groove and the casting pipe pass through and are connected.

[0012] As a preferred embodiment of the universal casting mold for current transformers described in this invention, the inner wall of the mold assembly is provided with a sealing groove, and a positioning element is slidably installed on the inner wall of the mold assembly, and the positioning element is slidably connected to the mold plate.

[0013] As a preferred embodiment of the universal casting mold for current transformers described in this invention, a buckle is fixedly installed on the outer wall of the mold assembly, and a movable block is fixedly installed on the bottom of the mold assembly, with the movable block slidably connected to the sliding groove.

[0014] As a preferred embodiment of the universal casting mold for the current transformer described in this invention, the venting assembly includes an vent pipe fixedly installed on the inner wall of the mold assembly, a movable ring slidably installed on the inner wall of the vent pipe, a connecting block fixedly installed on the movable ring, a vent plate fixedly installed on the other end of the connecting block, an alumina ceramic fixedly installed on the vent plate, an venting cavity fixedly installed on the inner wall of the mold assembly, and an interceptor fixedly installed on the inner wall of the mold assembly, wherein the venting cavity, the interceptor, and the vent pipe all penetrate and are connected.

[0015] As a preferred embodiment of the universal casting mold for current transformers described in this invention, the mounting assembly includes an adjusting component one fixedly mounted on a supporting operating component, a mounting component rotatably mounted on the adjusting component one, and a mounting plate fixedly mounted on the inner wall of the mounting component, wherein the mounting plate is connected to the casting pipe, a sealing strip is fixedly mounted on the outer wall of the mounting component, and the sealing strip is slidably connected to the sealing groove, a slot is provided on the outer wall of the mounting component, and the slot is connected to the buckle, and an adjusting component two is rotatably mounted on the bottom of the mounting component, wherein the adjusting component two is fixedly connected to the supporting operating component.

[0016] The beneficial effects of this invention are as follows: By abandoning the single top pouring port and using bottom-up pouring with a guiding pouring pipe, the invention allows air to be expelled through the venting assembly during material filling. The material automatically seals the outlet upon contact with the venting assembly, preventing air residue, surface defects, and internal air bubbles, thus reducing costs and defect rates. Furthermore, regarding pouring compactness, the drive assembly operates with a small amplitude, causing the impact plate and damping spring to impact the mold plate. This results in uniform vibration of the mold plate and the mold assembly, ensuring even distribution of impact force. This makes the epoxy resin material poured inside the mold assembly more compact, improving material adhesion, avoiding micro-air bubbles, and ensuring product density and electrical performance. In terms of operation and adaptability, the snap-fit ​​structure enables quick mold closing and fixing, and the modular design adapts to different specifications of current transformers, reducing mold changes and enabling fully automated closed-loop operation. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the installation structure of the universal casting mold for the current transformer of the present invention.

[0019] Figure 2 This is a schematic diagram of the overall structure of the universal casting mold for the current transformer of the present invention.

[0020] Figure 3This is a cross-sectional structural diagram of the universal casting mold for the current transformer of the present invention.

[0021] Figure 4 This invention provides a universal casting mold for current transformers. Figure 3 A magnified structural diagram at point A.

[0022] Figure 5 This is a schematic diagram of the drive assembly structure of the universal casting mold for the current transformer of the present invention.

[0023] Figure 6 This is a schematic diagram of the pushing component structure of the universal casting mold for the current transformer of the present invention.

[0024] Figure 7 This is a schematic cross-sectional view of the pushing component of the universal casting mold for the current transformer of the present invention.

[0025] Figure 8 This is a schematic diagram of the mold closing assembly structure of the universal casting mold for the current transformer of the present invention.

[0026] Figure 9 This invention provides a universal casting mold for current transformers. Figure 8 A magnified structural diagram at point B.

[0027] Figure 10 This is a schematic diagram of the installation module assembly structure of the universal casting mold for the current transformer of the present invention.

[0028] Explanation of reference numerals in the attached drawings: 1. Supporting operating component; 2. Moving unit; 21. Drive assembly; 211. Motor; 212. Rotating collar; 213. Connecting rod one; 214. Rotating shaft one; 215. Connecting rod two; 216. Rotating shaft two; 217. Moving plate; 218. Limiting plate; 22. Pushing assembly; 221. Moving part; 222. Limiting block; 223. Connecting plate; 224. Pushing part; 225. Buffer part; 226. Damping spring; 227. Impact plate; 3. Mold unit; 31. Mold closing assembly; 311. Mold plate; 312. 313. Mold fitting; 314. Sealing groove; 315. Positioning component; 316. Buckle; 317. Fitting groove; 318. Casting component; 319. Casting pipe; 32. Moving block; 320. Exhaust assembly; 321. Exhaust pipe; 322. Exhaust chamber; 323. Interceptor; 324. Moving ring; 325. Connecting block; 326. Vent plate; 327. Alumina ceramic; 33. Mounting assembly; 331. Adjusting component one; 332. Mounting component; 333. Slot; 334. Sealing strip; 335. Mounting plate; 336. Adjusting component two; 4. Sliding groove. Detailed Implementation

[0029] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0030] Example 1, referring to Figure 1 - Figure 2 The first embodiment of the present invention provides a universal casting mold for current transformers. This device includes: a support operating member 1 that supports the whole and works with a moving unit 2 to drive it when the mold is closed; at the same time, the mold unit 3 and the sliding groove 4 ensure the stability of movement during the mold closing and casting process.

[0031] The support operating component 1 is provided with a moving unit 2 for driving the mold unit 3 to close; the moving unit 2 is provided with a mold unit 3 for casting the current transformer, and the mold unit 3 is slidably connected to the support operating component 1. The inner wall of the support operating component 1 is provided with a sliding groove 4, which can ensure the stable movement of the mold unit 3 when the mold is closed.

[0032] Furthermore, the moving unit 2 includes a drive assembly 21 fixedly mounted on the support operating member 1 and a push assembly 22 fixedly mounted on the drive assembly 21. The drive assembly 21 is used to drive the push assembly 22, and the push assembly 22 is slidably connected to the support operating member 1. The drive assembly 21 causes the push assembly 22 to move to achieve mold closing.

[0033] Furthermore, the mold unit 3 includes a mold closing assembly 31 fixedly mounted on the push assembly 22. The mold closing assembly 31 has a cavity inside that matches the structure of the current transformer. The current transformer can be placed inside the mold closing assembly 31 for casting. The inner wall of the mold closing assembly 31 is provided with an exhaust assembly 32, which can exhaust excess gas inside the mold closing assembly 31 after mold closing. The mounting assembly 33 rotatably connected to the support operation member 1 realizes the installation of the current transformer inside the mold closing assembly 31.

[0034] During use, when the current transformer is first coated with epoxy resin, the current transformer is installed inside the mounting assembly 33. Then, the drive assembly 21 drives the push assembly 22, which moves the mold closing assembly 31 from the top of the support operating member 1 to the middle mounting assembly 33 until the mold closing assemblies 31 on both sides are attached to the outer wall of the mounting assembly 33, thus completing the mold closing. At the same time, the buckles 315 on the mold closing assembly 31 are directly engaged in the slots 333 in the mounting assembly 33, further strengthening the mold closing. Then, the material is poured into the mold closing assembly 31. The mold closing assembly 31 guides the poured material to the bottom of the cavity inside the mold closing assembly 31, so that the poured material begins to spread evenly from the bottom up and fully encapsulate the material.

[0035] As the epoxy resin material spreads upwards inside the mold clamping assembly 31, the liquid epoxy resin also compresses the air inside the cavity of the mold clamping assembly 31 upwards, causing the air inside the mold clamping assembly 31 to move upwards and be discharged to the outside of the mold clamping assembly 31 through the venting assembly 32, ensuring the vacuum inside the mold clamping assembly 31. When the pouring liquid comes into contact with the venting assembly 32, it carries the venting assembly 32 upwards, thereby sealing the venting assembly 32 and creating a vacuum pouring space inside the mold clamping assembly 31. The driving assembly 21 also rotates slightly, causing the pushing assembly 22 to impact the outer wall of the mold clamping assembly 31, causing the mold clamping assembly 31 to vibrate. This ensures the compactness of the pouring material inside the mold clamping assembly 31, avoids the generation of small air bubbles during the pouring process, and ensures the density and electrical performance of the product.

[0036] Example 2, refer to Figure 1 - Figure 7 This is the second embodiment of the present invention, which differs from the first embodiment in that: the drive assembly 21 includes a motor 211 fixedly mounted on the support operating member 1, which provides driving force to the drive assembly 21; it also includes a rotating collar 212 fixedly mounted on the output end of the motor 211, which is used to cooperate with the motor 211 to drive rotation; a connecting rod 213 fixedly mounted on the outer wall of the rotating collar 212, which retracts when the rotating collar 212 rotates; a rotating shaft 214 rotatably mounted on the connecting rod 213, which adjusts and cooperates when the connecting rod 213 rotates; a connecting rod 215 fixedly mounted on the outer wall of the rotating shaft 214, which retracts in cooperation with the connecting rod 213; a rotating shaft 216 rotatably mounted on the other end of the connecting rod 215, which adjusts in cooperation with the rotating shaft 214; and a movable plate 217 fixedly mounted on the rotating shaft 216, which drives the movable plate 217 to move. A limiting plate 218 is fixedly installed on the top of the movable plate 217, and the limiting plate 218 is slidably connected to the support operating member 1. When the movable plate 217 moves, the limiting plate 218 ensures the stability of its movement.

[0037] Compared to Embodiment 1, the pushing component 22 further includes a moving part 221 fixedly mounted on the moving plate 217, a connecting plate 223 fixedly mounted on the moving part 221, the connecting plate 223 being used to connect the pushing part 224, and the pushing part 224 fixedly mounted on the connecting plate 223, and the pushing part 224 being fixedly connected to the mold closing component 31, and the pushing part 224 being able to push the mold closing component 31 to close the mold when it moves.

[0038] Furthermore, a buffer 225 is fixedly installed on the moving part 221 to limit the movement of the moving part 221. An impact plate 227 is fixedly installed on the other end of the buffer 225 to impact the mold closing assembly 31. A damping spring 226 is fixedly installed on the outer wall of the buffer 225 and is connected to the impact plate 227 and the moving part 221. The damping spring 226 plays a buffering role when the impact plate 227 impacts. A limit block 222 is fixedly installed on the top of the moving part 221 and is slidably connected to the support operating part 1 to ensure the stability of the moving part 221 when it moves.

[0039] During use, firstly, after the current transformer is installed on the mounting assembly 33, the motor 211 starts to drive, and the rotating collar 212 drives the connecting rods 213 on both sides to retract towards the center. At the same time, the rotating shaft 214 also begins to retract and adjust, driving the connecting rod 215 to rotate and retract along the rotating shaft 216. This causes the moving plate 217 to drive the moving component 221, which in turn causes the pushing component 224 on the connecting plate 223 to push the mold closing assembly 31 towards the mounting assembly 33. While the moving component 221 and the moving plate 217 are moving, the limiting plate 218 and the limiting block 222 also slide inside the supporting operating component 1, thus ensuring the stability of the movement of the moving component 221 and the moving plate 217. After the motor 211 drives the pushing component 224 to attach the mold closing assembly 31 to the mounting assembly 33, and the mold closing assembly 31 and the mounting assembly 33 are fixed, pouring begins into the mounting assembly 33. During the pouring process, the motor 211 continues to rotate slightly in both directions, allowing the buffer 225 and impact plate 227 on the moving part 221 to continuously impact the mold plate 311. This causes the mold plate 311 and the mold closing part 312 to vibrate at a uniform speed, ensuring a uniform distribution of impact force. This makes the epoxy resin material poured inside the mold closing assembly 31 more compact, ensuring the compactness of the pouring process. After pouring is complete, the motor 211 rotates in the opposite direction, and the moving part 221 drives the pushing part 224 and the mold closing assembly 31 to disengage from the mounting assembly 33, thus enabling the mold opening and material unloading operation. This improves material adhesion and avoids micro-air bubbles.

[0040] The remaining structure is the same as that in Example 1.

[0041] Example 3, referring to Figure 1 - Figure 10This is the third embodiment of the present invention, which differs from the second embodiment in that: the mold clamping assembly 31 includes a mold plate 311 fixedly mounted on the pusher 224 for fixing the entire mold clamping assembly 31; a mold clamping component 312 fixedly mounted on the mold plate 311 for mold clamping and casting; a casting component 317 fixedly mounted on the mold clamping component 312 for casting guidance; a casting pipe 318 fixedly mounted on the casting component 317 for guiding the cast epoxy resin; and a bonding groove 316 fixedly mounted on the inner wall of the mold clamping component 312, wherein the bonding groove 316 and the casting pipe 318 pass through and are connected for bonding the current transformer.

[0042] Compared to Embodiment 2, the inner wall of the mold closing component 312 is further provided with a sealing groove 313 to ensure the sealing of the mold closing component 312. A positioning component 314 is slidably installed on the inner wall of the mold closing component 312, and the positioning component 314 is slidably connected to the mold plate 311. The positioning component 314 can position the mold plate 311 when the mold is closed.

[0043] Furthermore, a buckle 315 is fixedly installed on the outer wall of the mold closing component 312 for secondary fixation after mold closing. A moving block 319 is fixedly installed on the bottom of the mold closing component 312, and the moving block 319 is slidably connected to the sliding groove 4 to ensure the stability of the mold plate 311 during movement.

[0044] Furthermore, the exhaust assembly 32 includes an exhaust pipe 321 fixedly installed on the inner wall of the mold fitting 312 for exhausting air from the bonding groove 316; a movable ring 324 slidably installed on the inner wall of the exhaust pipe 321 for sealing the epoxy resin material inside the bonding groove 316 to prevent leakage; a connecting block 325 fixedly installed on the movable ring 324 for connecting the movable ring 324 and the vent plate 326; a vent plate 326 fixedly installed at the other end of the connecting block 325 for guiding the air inside the mold fitting 312; an alumina ceramic 327 fixedly installed on the vent plate 326 for contacting the casting material and moving upward stably; an exhaust chamber 322 fixedly installed on the inner wall of the mold fitting 312 for buffering and storing the air discharged from the bonding groove 316; and an interceptor 323 fixedly installed on the inner wall of the mold fitting 312, wherein the exhaust chamber 322, the interceptor 323, and the exhaust pipe 321 all penetrate and connect to each other, for venting air while preventing external dust and dirt from entering.

[0045] Furthermore, the mounting assembly 33 includes an adjustment member 331 fixedly mounted on the support operating member 1, the adjustment member 331 being connected to the support operating member 1 and capable of rotational adjustment; a mounting member 332 rotatably mounted on the adjustment member 331, the mounting member 332 being connected to the mold closing member 312 for installation; and a mounting plate 335 fixedly mounted on the inner wall of the mounting member 332, the mounting plate 335 being connected to the pouring pipe 318, the mounting plate 335 being capable of mounting and fixing the current transformer.

[0046] A sealing strip 334 is fixedly installed on the outer wall of the mounting part 332, and the sealing strip 334 is slidably connected to the sealing groove 313. The sealing groove 313 cooperates with the sealing strip 334 to ensure the sealing performance when the mold is closed. A slot 333 is provided on the outer wall of the mounting part 332, and the slot 333 is connected to the buckle 315 for fixing the mold closing part 312 and the mounting part 332. An adjusting part 2 336 is rotatably installed on the bottom of the mounting part 332, and the adjusting part 2 336 is fixedly connected to the support operating part 1, which serves to fix the mounting part 332 and the support operating part 1.

[0047] During use, firstly, when casting and coating with epoxy resin, the current transformer is installed inside the mounting plate 335. Then, the drive assembly 21 drives the push assembly 22 to rotate and retract. The push assembly 22 pushes the mold plate 311 and the mold closing component 312 towards the mounting component 332 until the mold closing component 312 is attached to the mounting component 332. At the same time, the sealing strip 334 is squeezed into the sealing groove 313, completing the mold closing and ensuring internal sealing. Furthermore, the positioning component 314 performs precise positioning during mold closing. Next, the buckle 315 is engaged into the slot 333 to complete the secondary fixation. The epoxy resin material enters from the casting part 317, flows along the casting pipe 318 to the bottom of the bonding groove 316, and begins to slowly rise from the bottom of the bonding groove 316, while simultaneously compressing the air inside the bonding groove 316. The air is forced through the alumina ceramic 327 and the vent plate 326 into the exhaust pipe 321. The exhaust pipe 321 guides the air to the exhaust chamber 322, and finally, it is discharged to the outside through the interceptor 323. After the internal casting material moves upward and contacts the alumina ceramic 327, the epoxy resin material, along with the alumina ceramic 327 and the vent plate 326, is squeezed upward. The connecting block 325 and the moving ring 324 also slide upward inside the mold assembly 312 simultaneously, so that the moving ring 324 directly seals the interface of the exhaust pipe 321, thereby completing the sealing of the mold assembly 312, preventing the cast epoxy resin from flowing out, eliminating air residue, avoiding surface defects and internal bubbles, eliminating the need for manual repair, and reducing costs and defect rates.

[0048] The remaining structure is the same as that in Example 2.

[0049] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A universal casting mold for current transformers, characterized in that: It includes a support operating component (1), a moving unit (2), and a mold unit (3); A moving unit (2) is provided on the supporting operating component (1), and a mold unit (3) is provided on the moving unit (2). The mold unit (3) is slidably connected to the supporting operating component (1), and a sliding groove (4) is provided on the inner wall of the supporting operating component (1). The moving unit (2) includes a drive assembly (21) fixedly mounted on the support operating member (1) and a push assembly (22) fixedly mounted on the drive assembly (21), and the push assembly (22) is slidably connected to the support operating member (1); The drive assembly (21) includes a motor (211) fixedly mounted on the support operating member (1), a rotating collar (212) fixedly mounted on the output end of the motor (211), a connecting rod (213) fixedly mounted on the outer wall of the rotating collar (212), a rotating shaft (214) rotatably mounted on the connecting rod (213), a connecting rod (215) fixedly mounted on the outer wall of the rotating shaft (214), a rotating shaft (216) rotatably mounted on the other end of the connecting rod (215), and a movable plate (217) fixedly mounted on the rotating shaft (216). A limiting plate (218) is fixedly installed on the top of the movable plate (217), and the limiting plate (218) is slidably connected to the supporting operating component (1); The push assembly (22) includes a movable part (221) fixedly mounted on a movable plate (217), a connecting plate (223) fixedly mounted on the movable part (221), and a pusher (224) fixedly mounted on the connecting plate (223), and the pusher (224) is fixedly connected to the mold clamping assembly (31); A buffer (225) is fixedly installed on the moving part (221), and an impact plate (227) is fixedly installed on the other end of the buffer (225). A damping spring (226) is fixedly installed on the outer wall of the buffer (225), and the damping spring (226) is connected to the impact plate (227) and the moving part (221). A limit block (222) is fixedly installed on the top of the moving part (221), and the limit block (222) is slidably connected to the support operating part (1). The mold unit (3) includes a mold closing assembly (31) fixedly mounted on the push assembly (22), an exhaust assembly (32) fixedly mounted on the inner wall of the mold closing assembly (31), and a mounting assembly (33) rotatably mounted on the support operating member (1). The mold clamping assembly (31) includes a mold plate (311) fixedly mounted on the pusher (224), a mold clamping component (312) fixedly mounted on the mold plate (311), a casting component (317) fixedly mounted on the mold clamping component (312), a casting pipe (318) fixedly mounted on the casting component (317), and a fitting groove (316) fixedly mounted on the inner wall of the mold clamping component (312), wherein the fitting groove (316) and the casting pipe (318) pass through and are connected.

2. The universal casting mold for current transformers according to claim 1, characterized in that: The inner wall of the mold assembly (312) is provided with a sealing groove (313), and a positioning element (314) is slidably installed on the inner wall of the mold assembly (312), and the positioning element (314) is slidably connected to the mold plate (311).

3. The universal casting mold for current transformers according to claim 2, characterized in that: The outer wall of the mold assembly (312) is fixedly installed with a buckle (315), and the bottom of the mold assembly (312) is fixedly installed with a moving block (319), and the moving block (319) is slidably connected to the sliding groove (4).

4. The universal casting mold for current transformers according to claim 3, characterized in that: The exhaust assembly (32) includes an exhaust pipe (321) fixedly installed on the inner wall of the mold assembly (312), a movable ring (324) slidably installed on the inner wall of the exhaust pipe (321), a connecting block (325) fixedly installed on the movable ring (324), a vent plate (326) fixedly installed on the other end of the connecting block (325), an alumina ceramic (327) fixedly installed on the vent plate (326), an exhaust chamber (322) fixedly installed on the inner wall of the mold assembly (312), and an interceptor (323) fixedly installed on the inner wall of the mold assembly (312), wherein the exhaust chamber (322) is connected to the interceptor (323) and the exhaust pipe (321).

5. The universal casting mold for current transformers according to claim 4, characterized in that: The mounting assembly (33) includes an adjustment component (331) fixedly mounted on the support operating component (1), a mounting component (332) rotatably mounted on the adjustment component (331), and a mounting plate (335) fixedly mounted on the inner wall of the mounting component (332), and the mounting plate (335) is connected to the pouring pipe (318); a sealing strip (334) is fixedly mounted on the outer wall of the mounting component (332), and the sealing strip (334) is slidably connected to the sealing groove (313); a slot (333) is provided on the outer wall of the mounting component (332), and the slot (333) is connected to the buckle (315); an adjustment component (336) is rotatably mounted on the bottom of the mounting component (332), and the adjustment component (336) is fixedly connected to the support operating component (1).

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