Turnover equipment for transformer iron core

By combining the clamping arm and squeezing arm in the flipping assembly with the limiting and fixing structure and the spring-driven positioning rod, the problems of unstable clamping and angle deviation in the existing iron core flipping equipment are solved, and the stable clamping and precise flipping of the iron core are realized.

CN121122908APending Publication Date: 2025-12-12WUJIANG TRANSFORMER CO LTD +1
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Patent Information

Application Number
CN202511568139.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-10-30
Publication Date
2025-12-12

AI Technical Summary

Technical Problem

Existing transformer core flipping equipment lacks precise adjustment components, making it difficult to adapt to the clamping requirements of cores of different specifications. The flipping angle deviation is large and the clamping is unstable.

Method used

The system employs a flipping assembly that includes a clamping arm, a pressing arm, and a rotating disk, combined with a limiting and fixing structure and a spring-driven positioning rod, to achieve stable clamping and precise flipping of the iron core.

Benefits of technology

It enables stable clamping and precise flipping of iron cores of different specifications, ensuring accurate flipping angles and improving production efficiency and stability.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention discloses overturning equipment for a transformer iron core, which comprises a base, a fixed plate is arranged on the base, a rotating shaft is rotationally arranged by penetrating through the fixed plate, a rotating disc is assembled at one end of the rotating shaft, an overturning assembly is assembled at the other end of the rotating shaft, and the overturning assembly is driven to overturn by the rotating disc through the rotating shaft; a limiting and fixing structure is mounted between the rotating disc and the fixing plate; the overturning assembly comprises a sleeve block and a sleeve connection seat which are oppositely arranged at an interval, the sleeve block is connected to the rotating shaft, clamping arms which are arranged at an interval are jointly installed between the sleeve block and the sleeve connection seat, and the two clamping arms are driven by a clamping adjusting mechanism to synchronously move towards each other or away from each other; an extrusion arm is assembled between the two clamping arms in a sliding mode, the extrusion arm is parallel to and close to the sleeving seat, an extrusion adjusting mechanism penetrates through the sleeving seat to be installed, and the extrusion adjusting mechanism drives the extrusion arm to move close to or away from the sleeving seat; the iron core overturning device can be used for clamping and overturning iron cores of different specifications, clamping is stable and reliable, the overturning angle is accurate, and the overturning requirement in iron core production is greatly met.
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Description

TECHNICAL FIELD

[0001] The present application relates to transformer production equipment technical field, especially a kind of turnover equipment for transformer core. BACKGROUND

[0002] Transformer core is the main magnetic circuit part in transformer, usually by high silicon content, surface is coated with insulating paint hot-rolled or cold-rolled silicon steel sheet stacking. Core and coil wound on it constitute complete electromagnetic induction system, its performance directly affects the efficiency of transformer. Transformer production needs to use turnover equipment, since the magnetic properties of silicon steel sheet has directionality, stacking is prone to direction error, stress concentration, poor joint and other problems, by turning over the core, the direction of the sheet can be corrected, stress can be released, joint structure can be optimized, insulation can be repaired, magnetic resistance and loss can be reduced, and stable and efficient operation of transformer can be ensured.

[0003] The existing turnover equipment for transformer core relies on mechanical link or simple clamp to realize clamping, and drives motor to turn over the core through fixed program, which lacks precise adjusting components, and cannot meet the requirements of modern production for accurate positioning and stable clamping during core turning over process. SUMMARY

[0004] To solve the above problems, the present application provides a turnover equipment for transformer core with reasonable structure, which can be used for clamping and turning over different specifications of core, and has stable and reliable clamping, accurate turning angle, greatly meeting the turning over requirements in core production.

[0005] The technical solutions adopted by the present application are as follows: A turnover equipment for transformer core, comprising a base, a fixed plate is installed on the base, a rotating shaft is rotatably installed through the fixed plate, a rotating disc is fitted at one end of the rotating shaft, and a turnover assembly is fitted at the other end of the rotating shaft, and the turnover assembly is driven to turn over by the rotating disc through the rotating shaft; a limiting structure is installed between the rotating disc and the fixed plate; The structure of the turnover assembly is as follows: a sleeve block and a sleeve seat are oppositely arranged, the sleeve block is connected to the end of the rotating shaft, a clamping arm is installed between the sleeve block and the sleeve seat, the clamping arms on both sides are driven to move synchronously towards or away from each other by a clamping adjusting mechanism; an extrusion arm is slidably fitted between the clamping arms on both sides, the extrusion arm is parallel to and close to the sleeve seat, an extrusion adjusting mechanism is installed through the sleeve seat, and the extrusion arm is driven to move close to or away from the sleeve seat by the extrusion adjusting mechanism.

[0006] As a further improvement of the above technical solutions: The positioning plug rod is sleeved on the positioning plug rod between the rotating disc and the pulling block, the spring drives the positioning plug rod to be inserted in the limiting groove, and the limiting and fixing structure is formed.

[0007] The sleeve is vertically installed on the outer wall surface of the rotating disc, the spring and the positioning plug rod are accommodated in the sleeve, the force ring is fixed on the positioning plug rod, the positioning plug rod is rotatably installed on the rotating disc and is slidably arranged on the rotating disc through the force ring, and the two ends of the spring are fixed on the force ring and the pulling block respectively.

[0008] The rotating disc is provided with a pointer radially outward, and the fixed plate is provided with scale lines, the pointer points to the corresponding scale line as the rotating disc rotates to drive the turnover assembly to turn over.

[0009] The screw rod is screwedly arranged in the through sleeve seat, the limiting block is rotatably sleeved on the inner end of the screw rod through the push-pull block, and the limiting block is fixedly installed on the extrusion arm.

[0010] The sliding grooves for the extrusion arms to pass through and be arranged are formed in the two side clamping arms, and the side of the extrusion arm facing the sleeve block is provided with a rubber pad.

[0011] The moving groove is formed in the sleeve block along the length direction, the bidirectional screw rod is rotatably installed in the moving groove, the outer threads of the two ends of the bidirectional screw rod are opposite in rotation direction, and the two side clamping arms are threadedly arranged at the two ends of the bidirectional screw rod.

[0012] The positioning guide rod parallel to the bidirectional screw rod is further installed in the sleeve block, and the clamping arm is sleeved on the positioning guide rod through the positioning hole.

[0013] The clamping blocks are oppositely extended on the sides of the two side clamping arms.

[0014] The T-shaped blocks are respectively arranged on the ends of the two side clamping arms and face the through sleeve seat, the head of the T-shaped block extends into the inside of the through sleeve seat, the upper end and the lower end of the T-shaped block are concave to form sliding grooves, and the top surface and the bottom surface of the through sleeve seat oppositely extend to form guide rails matched with the sliding grooves.

[0015] Compared with the prior art, the present application has the following beneficial effects: The application can realize clamping of the iron core by the two side clamping arms and the extrusion arm in the turnover assembly, is especially suitable for stable and reliable clamping of different specifications of iron cores, and realizes the turnover action of the iron core by combining the rotation of the rotating disc and the rotating shaft and fixing after rotation by the limiting fixing structure, the turnover angle is accurate, and the turnover demand in the production of the iron core is greatly met; The application also has the following advantages: When clamping the iron core, force can be applied to the rotating disc to make the bidirectional screw rotate, the two side clamping arms are driven to move along the positioning guide rod by the screw fitting, clamping on both sides of the iron core is realized, and another direction clamping is realized by the movement of the extrusion arm towards the iron core, so that the iron core can be stably clamped by the cooperative structure of the bidirectional screw and the extrusion arm during the turnover process, whether the iron core is of different specifications or the turnover angle is accurately adjusted, the self-adaptation of the iron core clamping is realized, the zero deviation in the turnover process is effectively ensured, the stability of the iron core turnover is greatly improved, and the production efficiency is ensured. When the iron core is turned over, force can be applied to the pulling block to make the positioning plug rod disengage from the limiting groove, and force can be applied to the rotating disc to make it rotate, and then the rotating shaft drives the iron core to turn over to the required angle; after the pulling block is loosened, the positioning plug rod will be inserted into the limiting groove under the action of the spring, and the angle locking is realized under the elastic force of the spring. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the application.

[0017] Figure 2 It is a structural schematic diagram of another perspective of the application.

[0018] Figure 3 It is an installation schematic diagram of the rotating disc on the fixing plate.

[0019] Figure 4 It is a fitting schematic diagram of the sleeve block and the clamping arm.

[0020] Figure 5 It is Figure 4 It is a partial enlarged view of A in the middle.

[0021] Figure 6 It is Figure 4 It is a partial enlarged view of B in the middle.

[0022] Figure 7 It is a fitting schematic diagram of the T-shaped block and the sleeve socket.

[0023] Wherein: 1, base; 2, fixed plate; 3, rotating shaft; 4, rotating disc; 5, limiting groove; 6, sleeve; 7, positioning plug; 8, stress ring; 9, spring; 10, pulling block; 11, turnover assembly; 12, sleeve block; 13, sleeve seat; 14, moving groove; 15, bidirectional screw; 16, clamping arm; 17, rotating disc; 18, lock nut; 19, positioning guide rod; 1901, positioning hole; 20, clamping block; 21, sliding groove; 22, extrusion arm; 23, T-shaped block; 24, guide rail; 25, sliding groove; 26, screw; 27, rotating disc; 28, push-pull block; 29, limiting block; 30, rubber pad; 31, scale line; 32, pointer; 33, supporting leg; 34, non-slip pad. DETAILED DESCRIPTION

[0024] The specific embodiments of the present application will be described below with reference to the accompanying drawings.

[0025] As shown in Figure 1 and Figure 2 , the turnover device for transformer core of the embodiment comprises a base 1, a fixed plate 2 is installed on the base 1, a rotating shaft 3 is rotatably installed through the fixed plate 2, a rotating disc 4 is fitted to one end of the rotating shaft 3, and a turnover assembly 11 is fitted to the other end of the rotating shaft 3, and the turnover assembly 11 is driven to turn over by the rotating disc 4 through the rotating shaft 3; a limiting and fixing structure is installed between the rotating disc 4 and the fixed plate 2, and the position between the rotating disc 4 and the fixed plate 2 can be fixed by the limiting and fixing structure after the turnover assembly 11 is driven to turn over to the position by the rotating disc 4.

[0026] The structure of the turnover assembly 11 is as follows: a sleeve block 12 and a sleeve seat 13 are oppositely arranged at intervals, the sleeve block 12 is connected to the end of the rotating shaft 3, clamping arms 16 are commonly installed between the sleeve block 12 and the sleeve seat 13 at intervals, the clamping arms 16 on both sides are driven to move synchronously towards or away from each other by a clamping adjustment mechanism; an extrusion arm 22 is commonly slidably fitted between the clamping arms 16 on both sides, the extrusion arm 22 is parallel to and close to the sleeve seat 13, and an extrusion adjustment mechanism is installed through the sleeve seat 13, and the extrusion arm 22 is driven to move close to or away from the sleeve seat 13 by the extrusion adjustment mechanism.

[0027] In the embodiment, the clamping of the core can be realized by the clamping arms 16 and the extrusion arm 22 in the turnover assembly 11, and the clamping force on the core can be effectively ensured, which is especially suitable for stable and reliable clamping of cores of different specifications, and the turnover action of the core can be realized by the rotation of the rotating disc 4 and the rotating shaft 3, and the rotation is fixed by the limiting and fixing structure after the rotation, so that the turnover angle is accurate.

[0028] In the embodiment, the clamping arms 16 are driven to move towards or away from each other by the clamping adjusting mechanism, and the pressing arm 22 is driven to move by the pressing adjusting mechanism, so that the iron core can be reliably clamped in the space surrounded by the two clamping arms 16, the sleeve block 12 and the pressing arm 22, and the embodiment is especially suitable for clamping iron cores of different sizes.

[0029] As shown in Figure 3 The rotating disc 4 is provided with a positioning plug rod 7 penetratingly and slidingly installed at the edge thereof, the fixed plate 2 is provided with a limiting groove 5 concentrically arranged with the rotating shaft 3 on the outer side thereof, one end of the positioning plug rod 7 is fitted into the limiting groove 5, and the other end of the positioning plug rod 7 is provided with a pulling block 10. A spring 9 is sleeved on the positioning plug rod 7 between the rotating disc 4 and the pulling block 10, the spring 9 drives the positioning plug rod 7 to be inserted into the limiting groove 5, thereby forming a limiting and fixing structure.

[0030] When the iron core is turned over, the positioning plug rod 7 can be separated from the limiting groove 5 by applying force to the pulling block 10, and the rotating disc 4 is rotated at the same time, so that the iron core is turned over to the required angle through the rotating shaft 3. After the pulling block 10 is released, the positioning plug rod 7 will be inserted into the limiting groove 5 under the action of the spring 9, and the angle locking is realized under the elastic force of the spring 9.

[0031] In the embodiment, the spring 9 drives the positioning plug rod 7 to be kept inserted and abutted in the limiting groove 5, thereby realizing the limiting and fixing of the rotating disc 4 after rotation. In actual operation, rough surfaces such as patterns can be provided on the end face of the positioning plug rod 7 facing the limiting groove 5 and the inner bottom surface of the limiting groove 5, so as to improve the friction resistance of the positioning plug rod 7 abutting in the limiting groove 5 and improve the reliability of the limiting and fixing.

[0032] The sleeve 6 is vertically installed on the outer wall surface of the rotating disc 4, and the sleeve 6 contains the spring 9 and the positioning plug rod 7 inside. The sleeve 6 can protect the spring 9 and the positioning plug rod 7, and help to ensure the reliability of the sliding of the positioning plug rod 7 relative to the rotating disc 4.

[0033] The positioning plug rod 7 is fixedly provided with a force ring 8, the force ring 8 is rotatably installed on the rotating disc 4, and the positioning plug rod 7 is slidingly fitted on the rotating disc 4 through the force ring 8. The spring 9 is fixed at both ends of the force ring 8 and the pulling block 10, respectively. The spring 9 effectively ensures that the positioning plug rod 7 is kept abutting towards the limiting groove 5.

[0034] The rotating disc 4 is provided with a pointer 32 radially outward, and the fixed plate 2 is provided with a scale line 31. When the rotating disc 4 drives the turning assembly 11 to turn, the pointer 32 points to the corresponding scale line 31, so as to intuitively display the turning angle of the iron core, thereby facilitating the accurate operation of the personnel.

[0035] As shown in Figure 4 and Figure 5As shown, the screw rod 26 is screw-fitted through the sleeve socket 13, the inner end of the screw rod 26 is rotationally sleeved with a limiting block 29 through a push-pull block 28, and the limiting block 29 is fixedly installed on the extrusion arm 22; the outer end of the screw rod 26 is installed with a rotating disc 27, and the rotating disc 27 applies force to the screw rod 26 to rotate, and the screw rod 26 drives the extrusion arm 22 to move in the axial direction of the screw rod 26 through the limiting block 29, so that the extrusion arm 22 approaches or moves away from the sleeve socket 13, thereby forming an extrusion adjusting mechanism.

[0036] In actual operation, the extrusion arm 22 can be moved away from the sleeve socket 13 to move against the iron core to achieve clamping.

[0037] The two side clamping arms 16 are provided with sliding grooves 21 for the extrusion arm 22 to pass through and be fitted, and the sliding grooves 21 can provide guidance and structural support for the clamping arms 16 during the movement of the extrusion arm 22 towards or away from the sleeve socket 13 through the extrusion adjusting mechanism.

[0038] The side of the extrusion arm 22 facing the sleeve block 12 is provided with a rubber pad 30 to help ensure the reliability of clamping the iron core.

[0039] The sleeve block 12 is provided with a moving slot 14 along the length direction, and a bidirectional screw rod 15 is rotationally installed in the moving slot 14. The bidirectional screw rod 15 is provided with external threads with opposite rotation directions at both ends, and the two side clamping arms 16 are threadedly fitted at both ends of the bidirectional screw rod 15. The end of the bidirectional screw rod 15 extends out of the sleeve block 12 and is installed with a rotating disc 17. The rotating disc 17 drives the bidirectional screw rod 15 to rotate, drives the two side clamping arms 16 to move synchronously towards or away from each other, and forms a clamping adjusting mechanism.

[0040] In this embodiment, the bidirectional screw rod 15 can be formed by two screw rods with opposite rotation directions and connected and fixed by a lock nut 18.

[0041] The sleeve block 12 is also installed with a positioning guide rod 19 arranged in parallel with the bidirectional screw rod 15, and the clamping arm 16 is sleeved on the positioning guide rod 19 through a positioning hole 1901, as shown. Figure 6

[0042] When clamping the iron core, force can be applied to the rotating disc 17 to make the bidirectional screw rod 15 rotate, and the two side clamping arms 16 are driven to move towards each other along the positioning guide rod 19 to clamp the iron core from both sides, and the extrusion arm 22 moves towards the iron core to clamp in another direction, thereby effectively ensuring that during the turning process, whether it is an iron core of different specifications or a precise adjustment of the turning angle, it can be stably clamped by the cooperative structure of the bidirectional screw rod 15 and the extrusion arm 22, realizing self-adaptation of the iron core clamping, effectively ensuring zero deviation during the turning process, greatly improving the stability of the iron core turning, and ensuring production efficiency.

[0043] The side surfaces of the two side clamping arms 16 facing each other extend with clamping blocks 20.​

[0044] In this embodiment, the clamping point of the iron core can be formed by the side surfaces of the two side clamping blocks 20 facing each other.

[0045] In one embodiment, the clamping angle of the iron core can also be formed by the corner between the clamping block 20 and the clamping arm 16 facing the pressing arm 22, that is, the iron core is clamped in the space formed by the clamping block 20, the clamping arm 16, and the pressing arm 22; thereby effectively avoiding the contact between the iron core and the sleeve block 12 during clamping, preventing the iron core from exerting a reaction force on the sleeve block 12 during clamping, and affecting the reliable use of the bidirectional screw 15 inside the sleeve block 12.

[0046] The end of each of the two clamping arms 16 is provided with a T-shaped block 23 facing the sleeve seat 13, and the head of the T-shaped block 23 extends into the inside of the sleeve seat 13. Figure 7 As shown in the figure, the upper end and the lower end of the T-shaped block 23 are respectively recessed to form sliding grooves 25, and the top surface and the bottom surface of the sleeve seat 13 extend towards each other to form guide rails 24 matched with the sliding grooves 25, thereby realizing stable, reliable, and smooth sliding matching between the two clamping arms 16 and the sleeve seat 13.

[0047] In this embodiment, support feet 33 can be installed at the four corners of the bottom surface of the base 1, and anti-skid pads 34 can be laid on the bottom of the support feet 33, thereby effectively preventing the equipment from sliding or shaking during clamping, turning, and taking out by increasing the friction with the ground, further ensuring the safety and accuracy of the iron core turning operation, and reducing the risk of iron core damage caused by unstable equipment.

[0048] The use of the present application is as follows: The initial positioning and clamping operation of the transformer iron core is performed. The transformer iron core to be turned is placed stably in the clamping area formed by the clamping block 20 and the pressing arm 22 in the turning assembly 11, and the iron core is ensured to be in close contact with the inside of the clamping block 20. Then, the rotating disc 17 is manually rotated to drive the bidirectional screw 15 to rotate in the moving groove 14, thereby driving the two clamping arms 16 spirally matched to move stably along the positioning guide rod 19, so that the clamping block 20 gradually approaches and preliminarily clamps the iron core on both sides. At the same time, the rotating disc 27 on the sleeve seat 13 is rotated to drive the screw 26 spirally matched to the sleeve seat 13 to rotate and produce axial displacement, so that the screw 26 pulls the pressing arm 22 through the end push-pull block 28 and the limiting block 29, and the pressing arm 22 slides along the sliding groove 21 of the clamping arm 16 until the rubber pad 30 inside the pressing arm 22 is tightly attached to the surface of the iron core, thereby achieving firm fixation of the iron core and preventing loosening during subsequent turning.

[0049] After the core is clamped, the overturning operation is performed. The pulling block 10 at the end of the positioning rod 7 is held and pulled away from the rotating disc 4, the positioning rod 7 slides along the inner wall of the sleeve 6, the spring 9 is compressed by the force ring 8, until the inner end of the positioning rod 7 is completely separated from the limiting groove 5 of the fixed plate 2, at this time, the angle locking state of the rotating disc 4 is released. At the same time, the rotating disc 4 is pushed, and the rotating shaft 3 fixed with the rotating disc 4 is synchronously rotated, the overturning assembly 11 mounted on the rotating shaft 3 is rotated, so as to drive the core to overturn.

[0050] During the overturning process, the overturning angle can be observed in real time through the scale line 31 on the surface of the fixed plate 2 and the pointer 32 at the edge of the rotating disc 4.

[0051] When the core is overturned to the angle required by the production process, the rotating disc 4 is stopped, and the pulling block 10 is slowly released. At this time, the elastic potential energy of the compressed spring 9 is released, the force ring 8 is pushed to move towards the limiting groove 5, the force ring 8 drives the positioning rod 7 to reset synchronously, until the end of the positioning rod 7 is reinserted into the limiting groove 5 and tightly abuts against the inner wall of the limiting groove 5, the angle locking of the rotating disc 4 is realized. Effectively ensure that the core maintains a stable posture after overturning, and will not be angle offset due to slight vibration of the equipment or external force interference, provide a stable operation basis for subsequent core processing or assembly operation.

[0052] Finally, after the core related subsequent operation is completed, the fixing is released in the reverse order of clamping.

[0053] The application can be used for clamping and overturning of cores of different specifications, the clamping is stable and reliable, the overturning angle is accurate, and the overturning requirement in core production is greatly met.

[0054] The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments, and the same and similar parts between various embodiments can be referred to each other.

[0055] The above description is an explanation of the application, not a limitation of the application, the scope defined by the application is referred to the claims, within the protection scope of the application, any form of modification can be made.

Claims

1. A device for flipping transformer cores, comprising a base (1), characterized in that: A fixing plate (2) is installed on the base (1), and a rotating shaft (3) is rotatably installed through the fixing plate (2). A rotating disk (4) is fitted at one end of the rotating shaft (3), and a flipping component (11) is fitted at the other end of the rotating shaft (3). The rotating disk (4) rotates and drives the flipping component (11) to flip. A limit fixing structure is installed between the rotating disk (4) and the fixing plate (2). The structure of the flipping component (11) is as follows: it includes a sleeve block (12) and a socket (13) arranged at intervals facing each other. The sleeve block (12) is connected to the end of the rotating shaft (3). The sleeve block (12) and the socket (13) are installed together with a clamping arm (16) arranged at intervals. The clamping arms (16) on both sides are driven by the clamping adjustment mechanism to move synchronously towards each other or away from each other. The clamping arms (16) on both sides are slidably fitted with a squeezing arm (22). The squeezing arm (22) is arranged parallel to and close to the socket (13). A squeezing adjustment mechanism is installed through the socket (13). The squeezing adjustment mechanism drives the squeezing arm (22) to move closer to or away from the socket (13).

2. The flipping device for transformer cores as described in claim 1, characterized in that: A positioning rod (7) is slidably installed through the edge of the rotating disk (4). A limiting groove (5) is provided on the outer side of the fixing plate (2) and is arranged concentrically with the rotating shaft (3). One end of the positioning rod (7) is fitted into the limiting groove (5), and a pulling block (10) is installed at the other end of the positioning rod (7). A spring (9) is fitted on the positioning rod (7) located between the rotating disk (4) and the pulling block (10). The spring (9) drives the positioning rod (7) to be inserted into the limiting groove (5) to form a limiting and fixing structure.

3. The flipping device for transformer cores as described in claim 2, characterized in that: A sleeve (6) is vertically installed on the outer wall of the rotating disk (4), and the sleeve (6) houses the spring (9) and the positioning rod (7) inside; a force ring (8) is fixed on the positioning rod (7), and the force ring (8) is rotatably installed on the rotating disk (4), and the positioning rod (7) is slidably fitted on the rotating disk (4) via the force ring (8); the two ends of the spring (9) are respectively fixed on the force ring (8) and the pulling block (10).

4. The flipping device for transformer cores as described in claim 1, characterized in that: The rotating disk (4) has a pointer (32) arranged radially outward, and the fixed plate (2) has a scale line (31). As the rotating disk (4) rotates, it drives the flipping component (11) to flip, and the pointer (32) points to the corresponding scale line (31).

5. A flipping device for transformer cores as described in claim 1, characterized in that: A screw (26) is screwed into the through socket (13). The inner end of the screw (26) is fitted with a limit block (29) via a push-pull block (28). The limit block (29) is fixedly installed on the extrusion arm (22). A rotating disk (27) is installed on the outer end of the screw (26). The rotating disk (27) applies force to the screw (26) to rotate. The screw (26) drives the extrusion arm (22) to move axially in the screw (26) via the limit block (29), so that the extrusion arm (22) moves closer to or further away from the socket (13), thus forming an extrusion adjustment mechanism.

6. The flipping device for transformer core as described in claim 1, characterized in that: The clamping arms (16) on both sides are provided with a groove (21) for the extrusion arm (22) to pass through and be fitted. The side of the extrusion arm (22) facing the sleeve block (12) is covered with a rubber pad (30).

7. The flipping device for transformer cores as described in claim 1, characterized in that: The sleeve (12) has a moving groove (14) along its length. A bidirectional screw (15) is rotatably installed in the moving groove (14). The two ends of the bidirectional screw (15) are provided with external threads with opposite directions of rotation. The clamping arms (16) on both sides are threadedly fitted to the two ends of the bidirectional screw (15). The end of the bidirectional screw (15) extends out of the sleeve (12) and is equipped with a turntable (17). The rotation of the turntable (17) drives the bidirectional screw (15) to rotate, causing the clamping arms (16) on both sides to move synchronously towards or away from each other, thus forming a clamping and adjusting mechanism.

8. A flipping device for a transformer core as described in claim 7, characterized in that: The sleeve (12) is also equipped with a positioning guide rod (19) arranged parallel to the bidirectional screw (15), and the clamping arm (16) is fitted onto the positioning guide rod (19) through the positioning hole (1901).

9. A flipping device for a transformer core as described in claim 1, characterized in that: The two clamping arms (16) extend opposite each other with clamping blocks (20).

10. A flipping device for a transformer core as described in claim 1, characterized in that: T-shaped blocks (23) are installed at the ends of the clamping arms (16) facing the socket (13). The head of the T-shaped block (23) extends into the socket (13). The upper and lower ends of the T-shaped block (23) are recessed to form sliding grooves (25). The inner top surface and inner bottom surface of the socket (13) extend towards each other to form guide rails (24) that are fitted with the sliding grooves (25).