Transformer core silicon steel sheet grinding device

Abstract

This application provides a grinding device for silicon steel sheets in transformer cores, including a base, two clamping plates, and a supporting member. A rotating arm is rotatably connected to the front side of the base, and a positioning structure exists between the rotating arm and the base. Both clamping plates are hinged to the front side of the rotating arm, and a clamping structure exists between the two clamping plates. Each clamping plate also has a locking structure with respect to the rotating arm. The supporting member is mounted on the base to support the clamping plates in their open, lower position, ensuring the clamping plates remain horizontal. In practical use, the two clamping plates are connected by the clamping structure, and the silicon steel sheets can be flipped by rotating the rotating arm. During this process, the operator does not need to touch the silicon steel sheets, thus ensuring operational safety. The grinding device for silicon steel sheets in transformer cores provided by this application eliminates the technical steps of human contact with silicon steel sheets, ensuring the safety of silicon steel sheet grinding operations and improving the efficiency of silicon steel sheet grinding.

Description

Technical Field

[0001] This application belongs to the field of silicon steel sheet processing technology, specifically relating to a grinding device for silicon steel sheets of transformer cores. Background Technology

[0002] Transformer core silicon steel sheets (hereinafter referred to as "silicon steel sheets"), also known as "oriented electrical steel" or "oriented silicon steel," are a special alloy steel material specifically used for transformer cores. They are mainly made of iron and silicon through a special rolling and heat treatment process. During the processing of silicon steel sheets, in order to remove the oxide layer and defects on the surface of the silicon steel sheets, it is usually necessary to grind both sides of them.

[0003] In existing technologies, the grinding of silicon steel sheets is usually a human-machine collaborative operation. Specifically, the worker places the silicon steel sheet on the support surface under the grinding tool, then manually presses the grinding tool to make the grinding end contact the silicon steel sheet and restrict the horizontal movement of the silicon steel sheet. At the same time, the grinding tool is started to make the grinding end translate, thereby achieving the grinding of one side of the silicon steel sheet.

[0004] The inventors discovered that when processing a single silicon steel sheet, after grinding one side of the sheet, workers need to flip it over. However, the silicon steel sheet is very hot after grinding, which can easily burn the workers' hands. At the same time, in order to avoid cutting their hands during the manual flipping process, the grinding tools need to be paused and moved, which reduces the efficiency of grinding silicon steel sheets. Utility Model Content

[0005] This application provides a transformer core silicon steel sheet grinding device, which aims to eliminate the technical steps of human contact with silicon steel sheets, thereby ensuring the safety of silicon steel sheet grinding operations and improving the working efficiency of silicon steel sheet grinding.

[0006] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0007] A device for grinding silicon steel sheets in transformer cores is provided, comprising:

[0008] A base is used to fix it on a horizontal surface; a rotating arm is rotatably connected to the front side of the base in the front-back direction, and a positioning structure is provided between the rotating arm and the base; the positioning structure is used to connect the rotating arm and the base so that the rotating arm is in a horizontal state and restricts the rotation of the rotating arm.

[0009] Two clamping plates are hinged to the front side of the rotating arm to accommodate a clamping state where their adjacent sides are parallel to the front-rear direction, or an open state where the lower clamping plate is horizontal and the upper clamping plate is vertical. A clamping structure connects the two clamping plates in the clamping state. Furthermore, each clamping plate has a locking structure with the rotating arm to connect the upper clamping plate in the open state to the rotating arm.

[0010] A support member is provided on the base to support the clamping plate in the open state and located on the lower side, so as to limit the downward swing of the swing end of the clamping plate.

[0011] In one possible implementation, the base has a mounting hole extending in the front-rear direction, and the rotating arm has a connecting rod fixedly connected thereto.

[0012] The connecting rod passes through the mounting hole and extends out, so that the rotating arm has a degree of freedom to rotate relative to the base about the connecting rod as an axis.

[0013] In one possible implementation, the positioning structure includes:

[0014] A slot is provided on the rear side of the base; and

[0015] A positioning sleeve is slidably connected to the extended portion of the connecting rod in the front-back direction and rotates synchronously with the connecting rod; the positioning sleeve has a plug rod fixedly connected to it and adapted to be inserted into the slot.

[0016] The outer side of the extended portion of the connecting rod is provided with a strip-shaped groove extending along its length, and the strip-shaped groove penetrates the extended end face of the connecting rod; the positioning sleeve is slidably fitted on the connecting rod, and its inner side has a protrusion that is slidably embedded in the strip-shaped groove.

[0017] In one possible implementation, the extended end of the connecting rod is detachably connected to an anti-detachment disc, the outer periphery of which is located outside the connecting rod to abut against the positioning sleeve and prevent the positioning sleeve from detaching from the connecting rod.

[0018] The connecting rod has a threaded groove on its extended end face, and the anti-detachment disc has a connecting screw that is fixedly connected to it and is suitable for threaded connection with the threaded groove.

[0019] In one possible implementation, a spring is fitted onto the extended portion of the connecting rod, with both ends of the spring connected to the anti-detachment disc and the positioning sleeve, respectively, to facilitate pushing the positioning sleeve toward the base.

[0020] In one possible implementation, the clamping structure includes:

[0021] Two hooks are fixedly connected to the swing end faces of the two clamping plates, and when the two clamping plates are in the clamping state, the two hooks are coaxially arranged, and their openings both face horizontally; and

[0022] Two latches, hinged together horizontally, are disposed between the two hooks, and the two latches are adapted to engage with the two hooks respectively to restrict the relative swinging of the two clamps.

[0023] In one possible implementation, the locking structure includes:

[0024] An arc-shaped groove is formed on the outer surface of the rotary arm; and

[0025] The swing arm is hinged to the outer side of the clamping plate, and its hinge axis is perpendicular to the surface of the clamping plate.

[0026] When the clamping plate is above the other clamping plate and in the open state, the swing arm is above the arcuate groove to be adapted to swing down to its swing end facing down and embedding into the arcuate groove, and to limit the swing of the clamping plate relative to the swing arm.

[0027] In one possible implementation, the base has a guide hole that extends in the front-rear direction, and the support member includes a guide plate that is slidably inserted into the guide hole in the front-rear direction.

[0028] The guide plate has a bent portion at its rear end for abutting against the rear side of the base.

[0029] In one possible implementation, the base has multiple support rods extending rearward, and the rear side of the base has a counterweight connected to the extended ends of the multiple support rods.

[0030] The counterweight has a hollow internal structure and a water injection pipe communicating with its interior on its upper side; and a water plug is detachably connected to the water injection pipe.

[0031] In one possible implementation, elastic gaskets are provided on adjacent sides of both clamps;

[0032] When the silicon steel sheet is between the two clamping plates and the two clamping plates are in the clamping state, both elastic pads are adapted to contact the silicon steel sheet and undergo elastic deformation.

[0033] In this embodiment, the position of the rotating arm can be fixed by the positioning structure. Then, the upper clamping plate is swung to a vertical position and fixed by the locking structure, while the lower clamping plate is supported by the supporting member and kept in a horizontal position. This allows the silicon steel sheet to be fixed to the upper side of the lower clamping plate, enabling grinding of the upward-facing side of the silicon steel sheet. After grinding, the two clamping plates are connected by the clamping structure, and the rotating arm is flipped. Then, the upper clamping plate is swung to a vertical position and fixed by the locking structure, while the lower clamping plate is supported by the supporting member and kept in a horizontal position. This allows the side of the silicon steel sheet that was originally facing downwards to face upwards, making it suitable for grinding its surface.

[0034] The transformer core silicon steel sheet grinding device provided in this embodiment eliminates the technical steps of human contact with silicon steel sheets compared with the prior art, thereby ensuring the safety of silicon steel sheet grinding operations and improving the working efficiency of silicon steel sheet grinding. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This is one of the three-dimensional structural schematic diagrams of the transformer core silicon steel sheet grinding device provided in the embodiments of this application;

[0037] Figure 2 for Figure 1 A magnified view of a portion of the middle circle A;

[0038] Figure 3 A second three-dimensional structural schematic diagram of the transformer core silicon steel sheet grinding device provided in the embodiments of this application;

[0039] Figure 4 This is the third three-dimensional structural schematic diagram of the transformer core silicon steel sheet grinding device provided in the embodiments of this application;

[0040] Figure 5 for Figure 4 A magnified view of a portion of the middle circle at point B;

[0041] Figure 6 This is a three-dimensional structural diagram of the card block used in the embodiments of this application;

[0042] Figure 7 This is a three-dimensional structural diagram of the clamping plate and elastic gasket used in the embodiments of this application from an explosion perspective;

[0043] Figure 8This is a three-dimensional structural diagram of the base and support components used in the embodiments of this application from an exploded perspective;

[0044] Figure 9 This is a cross-sectional structural diagram of the counterweight used in the embodiments of this application;

[0045] Figure 10 This is a cross-sectional view of the base and rotating arm used in the embodiments of this application.

[0046] Figure 11 This is a partially enlarged schematic diagram of the positioning structure used in the embodiments of this application from an explosion perspective;

[0047] Figure 12 This is an exploded view of the rotating arm and related structures used in the embodiments of this application;

[0048] Figure 13 This is a partially enlarged schematic diagram of the rotating arm used in the embodiments of this application;

[0049] Explanation of reference numerals in the attached drawings: 1. Base; 11. Mounting hole; 12. Guide hole; 13. Support rod; 14. Counterweight; 141. Water injection pipe; 142. Water plug; 2. Clamping plate; 21. Elastic gasket; 3. Supporting component; 31. Bending part; 4. Rotary arm; 41. Connecting rod; 411. Strip groove; 412. Threaded groove; 42. Anti-detachment disc; 421. Connecting screw; 43. Spring; 5. Positioning structure; 51. Slot; 52. Positioning sleeve; 521. Insert rod; 522. Protrusion; 6. Clamping structure; 61. Hook; 62. Locking block; 7. Locking structure; 71. Arc groove; 72. Swing arm; 100. Silicon steel sheet. Detailed Implementation

[0050] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0051] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0052] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0053] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0054] Please refer to the following: Figures 1 to 13 The present application describes the transformer core silicon steel sheet grinding device. The transformer core silicon steel sheet grinding device proposed in this application includes a base 1, two clamping plates 2, and a supporting component 3.

[0055] The base 1 is used to fix it on a horizontal surface; in this embodiment, the base 1 adopts a structure with a triangular vertical cross section, and one of its sides is connected to the horizontal surface.

[0056] The base 1 has a rotating arm 4 on the side facing its own thickness direction; in this embodiment, for ease of description, the thickness direction of the base 1 is defined as the front-back direction, and the rotating arm 4 is located on the front side of the base 1.

[0057] Based on this, the rotating arm 4 is rotatably connected to the front side of the base 1 in the front-back direction, and a positioning structure 5 is provided between the rotating arm 4 and the base 1. In actual use, the positioning structure 5 is used to connect the rotating arm 4 and the base 1 so that the rotating arm 4 is in a horizontal state and restricts the rotation of the rotating arm 4. Specifically, the rotating arm 4 has two usage states, defined as the front and back sides facing its own width direction, respectively. The rotating arm 4 has a horizontal state with the front side facing up and a horizontal state with the back side facing up.

[0058] Both clamping plates 2 are hinged to the front side of the rotating arm 4, and the hinge axis is parallel to the length direction of the rotating arm 4. Based on this, in actual use, the two clamping plates 2 are suitable for swinging simultaneously to a clamping state in which their adjacent sides are parallel to the front-back direction, or to an open state in which the lower clamping plate 2 is in a horizontal state and the upper clamping plate 2 is in a vertical state.

[0059] When the two clamping plates 2 are in the clamping state, the silicon steel sheet 100 can be placed between the two clamping plates 2, with the adjacent sides of the two clamping plates 2 respectively contacting the two sides of the silicon steel sheet 100 to restrict the movement of the silicon steel sheet 100 relative to the clamping plates 2. When the two clamping plates 2 are in the open state, since the upper clamping plate 2 is in a vertical state, it can avoid the grinding component, so that the upward-facing side of the silicon steel sheet 100 can be ground.

[0060] There is a clamping structure 6 between the two clamping plates 2 to connect the two clamping plates 2 when they are in the clamping state, so that when the rotating arm 4 rotates, the two clamping plates 2 separate and the silicon steel sheet 100 falls off.

[0061] Each clamp 2 has a locking structure 7 between it and the rotating arm 4, for connecting the clamp 2 and the rotating arm 4 when they are in the open state and on the upper side, so that the clamp 2 on the upper side remains in a vertical state.

[0062] The support member 3 is mounted on the base 1 to support the clamping plate 2, which is in an open state and located on the lower side, so as to limit the downward swing of the swing end of the clamping plate 2.

[0063] In this embodiment, the position of the rotating arm 4 can be fixed by the positioning structure 5. Then, the upper clamping plate 2 is swung to a vertical position and fixed by the locking structure 7. At the same time, the lower clamping plate 2 is supported by the support member 3 and kept in a horizontal position, so that the silicon steel sheet 100 is fixed to the upper side of the lower clamping plate 2, thereby realizing the grinding of the upward-facing side of the silicon steel sheet 100. After grinding is completed, the two clamping plates 2 are connected by the clamping structure 6, and the rotating arm 4 is flipped. Then, the upper clamping plate 2 is swung to a vertical position and fixed by the locking structure 7. At the same time, the lower clamping plate 2 is supported by the support member 3 and kept in a horizontal position, so that the side of the silicon steel sheet 100 that was originally facing down faces up, which is suitable for grinding its surface.

[0064] The transformer core silicon steel sheet grinding device provided in this embodiment eliminates the technical steps of human contact with the silicon steel sheet 100 compared with the prior art, so as to ensure the safety of the silicon steel sheet 100 grinding operation and improve the working efficiency of the silicon steel sheet 100 grinding.

[0065] In some embodiments, such as Figures 10 to 12 As shown, the base 1 has a mounting hole 11 that runs through the front and rear direction, and the rotating arm 4 has a connecting rod 41 that is fixedly connected to it.

[0066] After actual assembly, the connecting rod 41 passes through the mounting hole 11 and extends out, so that the rotating arm 4 has the degree of freedom to rotate relative to the base 1 about the connecting rod 41 as the axis, that is, to realize the rotational connection between the rotating arm 4 and the base 1, and to keep the rotating arm 4 in the position of the front side of the base 1.

[0067] In some embodiments, such as Figure 11 As shown, the positioning structure 5 includes a slot 51 and a positioning sleeve 52.

[0068] Slot 51 is located on the rear side of base 1.

[0069] The positioning sleeve 52 is slidably connected to the extended portion of the connecting rod 41 in the front-to-back direction, and it rotates synchronously with the connecting rod 41; that is, the positioning sleeve 52 cannot rotate relative to the connecting rod 41. Furthermore, the positioning sleeve 52 has a plug rod 521 fixedly connected to it and adapted to be inserted into the slot 51 to restrict the rotation of the connecting rod 41 relative to the base 1, that is, to fix the position of the rotating arm 4 relative to the base 1.

[0070] The outer side of the extended portion of the connecting rod 41 is provided with a strip groove 411 extending along its length direction, and this strip groove 411 penetrates the extended end face of the connecting rod 41; the aforementioned positioning sleeve 52 is slidably sleeved on the connecting rod 41, and its inner side has a protrusion 522 that is slidably embedded in the strip groove 411, so as to achieve the technical purpose that the positioning sleeve 52 cannot rotate relative to the connecting rod 41.

[0071] In some embodiments, such as Figure 11 and Figure 12 As shown, the extended end of the connecting rod 41 is detachably connected to an anti-detachment disc 42. The outer periphery of the anti-detachment disc 42 is located outside the connecting rod 41 to abut against the positioning sleeve 52 and prevent the positioning sleeve 52 from disengaging from the connecting rod 41, thereby improving the structural stability of the device.

[0072] Based on the aforementioned technical content, a threaded groove 412 is provided on the extended end face of the connecting rod 41, and a connecting screw 421 is fixedly connected to the anti-detachment disc 42 and is suitable for threaded connection with the threaded groove 412. By rotating the anti-detachment disc 42, the connecting rod 41 and the anti-detachment disc 42 can be detachably connected.

[0073] In some embodiments, such as Figure 3 and Figure 12 As shown, a spring 43 is fitted on the extended part of the connecting rod 41. The two ends of the spring 43 are connected to the anti-detachment disc 42 and the positioning sleeve 52 respectively, so as to push the positioning sleeve 52 toward the base 1 and prevent the insertion rod 521 from disengaging from the slot 51.

[0074] In some embodiments, such as Figure 2 , Figure 4 and Figure 6 As shown, the clamping structure 6 includes two hooks 61 and two locking blocks 62.

[0075] Two hooks 61 are fixedly connected to the swing end faces of the two clamping plates 2 respectively. When the two clamping plates 2 are in the clamping state, the two hooks 61 are coaxially arranged and their openings are both facing the same side on the horizontal plane.

[0076] Two locking blocks 62 are hinged together in the horizontal direction and are located between two hooks 61. In actual use, the two locking blocks 62 are adapted to be locked into the two hooks 61 respectively. Since the two locking blocks 62 are hinged together, the two locking blocks 62 can limit the relative swing of the two clamps 2.

[0077] In some embodiments, such as Figure 3 and Figure 4 As shown, the locking structure 7 includes an arc-shaped groove 71 and a swing arm 72.

[0078] An arc-shaped groove 71 is formed on the outer side of the rotating arm 4. When the rotating arm 4 is in a horizontal state, this arc-shaped groove 71 is oriented upward or downward.

[0079] The swing arm 72 is hinged to the outer side of the clamping plate 2, and its hinge axis is perpendicular to the surface of the clamping plate 2.

[0080] By adopting the above technical solution, when the clamping plate 2 is on top of another clamping plate 2 and is in an open state, the swing arm 72 is on top of the arc groove 71, so as to swing until its swing end faces down and is embedded in the arc groove 71, and restrict the swing of the clamping plate 2 relative to the rotating arm 4.

[0081] In some embodiments, such as Figure 8 As shown, the base 1 has a guide hole 12 that runs through the front and rear directions, and the support member 3 includes a guide plate that slides into the guide hole 12 in the front and rear directions.

[0082] In this embodiment, the rear end of the guide plate has a bent portion 31 for abutting against the rear side of the base 1 to prevent the guide plate from disengaging from the guide hole 12.

[0083] In some embodiments, such as Figure 8 and Figure 9 As shown, the base 1 has multiple support rods 13 extending to the rear, and the rear side of the base 1 has a counterweight 14 connected to the extended ends of the multiple support rods 13.

[0084] By adopting the above technical solution, the support rod 13 can extend the length of the bottom of the base 1 and be balanced by the counterweight 14 to ensure the stability of the base 1 fixed on the horizontal plane.

[0085] Based on the aforementioned technical solution, the counterweight 14 adopts an internally hollow structure, and its upper side has a water injection pipe 141 communicating with its interior; and a water-blocking plug 142 is detachably connected to the water injection pipe 141.

[0086] In actual use, the overall weight of the counterweight 14 can be adjusted by separating the water plug 142 and injecting or extracting liquid into the counterweight 14.

[0087] In some embodiments, such as Figure 3 and Figure 7 As shown, elastic gaskets 21 are provided on the adjacent sides of the two clamping plates 2; specifically, square grooves matching the elastic gaskets 21 are opened on the adjacent sides of the two clamping plates 2, and the elastic gaskets 21 are fixedly embedded in the square grooves.

[0088] When the silicon steel sheet 100 is between the two clamping plates 2 and the two clamping plates 2 are in a clamping state, both elastic pads 21 are suitable for contacting the silicon steel sheet 100 and undergoing elastic deformation.

[0089] Furthermore, when the silicon steel sheet 100 is placed on the lower clamping plate 2, the lower side of the silicon steel sheet 100 is in contact with the elastic pad 21. At this time, by processing the upper side of the silicon steel sheet 100 through the grinding component, the elastic pad 21 will also undergo elastic deformation, thereby forming a depression to restrict the movement of the silicon steel sheet 100 relative to the clamping plate 2 in the horizontal direction.

[0090] The above content is only a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A transformer core silicon steel sheet polishing device, characterized by, include: A base is used to fix it on a horizontal surface; a rotating arm is rotatably connected to the front side of the base in the front-back direction, and a positioning structure is provided between the rotating arm and the base; the positioning structure is used to connect the rotating arm and the base so that the rotating arm is in a horizontal state and restricts the rotation of the rotating arm. Two clamping plates are hinged to the front side of the rotating arm to be adapted to swing to a clamping state where their adjacent sides are parallel to the front-back direction, or to swing to an open state where the lower clamping plate is horizontal and the upper clamping plate is vertical; a clamping structure is provided between the two clamping plates to connect the two clamping plates in the clamping state; and a locking structure is provided between each clamping plate and the rotating arm to connect the upper clamping plate in the open state and the rotating arm. as well as A support member is provided on the base to support the clamping plate in the open state and located on the lower side, so as to limit the downward swing of the swing end of the clamping plate.

2. The transformer core silicon steel sheet grinding device as described in claim 1, characterized in that, The base has a through mounting hole in the front-to-back direction, and the rotating arm has a connecting rod that is fixedly connected to it. The connecting rod passes through the mounting hole and extends out, so that the rotating arm has a degree of freedom to rotate relative to the base about the connecting rod as an axis.

3. The transformer core silicon steel sheet grinding device as described in claim 2, characterized in that, The positioning structure includes: A slot is provided on the rear side of the base; and A positioning sleeve is slidably connected to the extended portion of the connecting rod in the front-back direction and rotates synchronously with the connecting rod; the positioning sleeve has a plug rod that is fixedly connected to it and adapted to be inserted into the slot. The outer side of the extended portion of the connecting rod is provided with a strip-shaped groove extending along its length, and the strip-shaped groove penetrates the extended end face of the connecting rod; the positioning sleeve is slidably fitted on the connecting rod, and its inner side has a protrusion that is slidably embedded in the strip-shaped groove.

4. The transformer core silicon steel sheet grinding device as described in claim 3, characterized in that, The extended end of the connecting rod is detachably connected to an anti-detachment disc, the outer periphery of which is located outside the connecting rod to abut against the positioning sleeve and prevent the positioning sleeve from detaching from the connecting rod. The connecting rod has a threaded groove on its extended end face, and the anti-detachment disc has a connecting screw that is fixedly connected to it and is suitable for threaded connection with the threaded groove.

5. The transformer core silicon steel sheet grinding device as described in claim 4, characterized in that, A spring is fitted onto the extended portion of the connecting rod, and the two ends of the spring are respectively connected to the anti-detachment disc and the positioning sleeve, so as to push the positioning sleeve toward the base.

6. The transformer core silicon steel sheet grinding device as described in claim 1, characterized in that, The clamping structure includes: Two hooks are fixedly connected to the swing end faces of the two clamping plates, and when the two clamping plates are in the clamping state, the two hooks are coaxially arranged, and their openings both face horizontally; and Two latches, hinged together horizontally, are disposed between the two hooks, and the two latches are adapted to engage with the two hooks respectively to restrict the relative swinging of the two clamps.

7. The transformer core silicon steel sheet grinding device as described in claim 1, characterized in that, The locking structure includes: An arc-shaped groove is formed on the outer surface of the rotary arm; and The swing arm is hinged to the outer side of the clamping plate, and its hinge axis is perpendicular to the surface of the clamping plate. When the clamping plate is above the other clamping plate and in the open state, the swing arm is above the arcuate groove to be adapted to swing down to its swing end facing down and embedding into the arcuate groove, and to limit the swing of the clamping plate relative to the swing arm.

8. The transformer core silicon steel sheet grinding device as described in claim 1, characterized in that, The base has a guide hole that runs through the front and rear directions, and the support member includes a guide plate that slides into the guide hole in the front and rear directions. The guide plate has a bent portion at its rear end for abutting against the rear side of the base.

9. The transformer core silicon steel sheet grinding device as described in claim 1, characterized in that, The base has multiple support rods extending to the rear, and the rear side of the base has a counterweight connected to the extended ends of the multiple support rods. The counterweight has a hollow internal structure and a water injection pipe communicating with its interior on its upper side; and a water plug is detachably connected to the water injection pipe.

10. The transformer core silicon steel sheet grinding device according to any one of claims 1-9, characterized in that, Elastic gaskets are provided on adjacent sides of both clamping plates; When the silicon steel sheet is between the two clamping plates and the two clamping plates are in the clamping state, both elastic pads are adapted to contact the silicon steel sheet and undergo elastic deformation.

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