Shaping tool for triangular iron-based nanocrystalline iron core
By designing a shaped tooling for a triangular iron-based nanocrystal iron core including a fixed inner core and a fixed shell, the problems of low dimensional accuracy and low production efficiency in the prior art are solved, and the effect of avoiding the deformation of the straight edge of the iron core and improving the accuracy during the heat treatment process is achieved.
Patent Information
- Application Number
- CN202422155523.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-03
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-09-03
AI Technical Summary
In the production process of triangular iron-based nanocrystalline iron cores, existing shaped tooling is difficult to ensure the dimensional accuracy and production efficiency of the iron core, and the straight edges and corners of the iron core cannot fit closely into the tooling, resulting in low accuracy.
A shaped tool for a triangular iron-based nanocrystal iron core including a fixed inner core and a fixed shell is designed. The shaped inner core has a triangular prism structure, including at least two sub-cores, which can be shaped in conjunction with the inner ring of the winding strip; the shaped housing includes a left half shell and a right half shell spliced together, which can be shaped in conjunction with the outer ring of the winding strip.
Through this shaped tooling, the deformation of the three straight edges of the iron core can be avoided in processing processes such as heat treatment, significantly improve the dimensional accuracy of the iron core, and improve production efficiency.
Smart Images
Figure CN223038770U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of nanocrystalline core production, in particular to a sizing tool for a triangular iron-based nanocrystalline core. Background Art
[0002] During the production of triangular iron-based nanocrystalline cores, sizing methods such as heat treatment after sleeving a box on a coiled ring and directly coiling into a triangular core during winding are commonly used. In the box-sleeving method, the annular core is placed in a triangular tooling box, and the shape of the core is fixed into a triangle by the shape of the tooling box. However, the tooling box is an integral structure and cannot be disassembled. When using the tooling, it is often very difficult to place the core into the box, and the installation and disassembly of the core are difficult, resulting in low work efficiency. Moreover, when using this tooling, the straight edges and corners of the triangular core cannot fit tightly with the tooling, so the precision of the produced core is low. When directly coiling into a triangle during winding, the strip is directly wound around the triangular winding inner core and directly coiled into a triangle during winding. Since there is no tooling to fix the outside of the core, after heat treatment, the three straight edges of the core are prone to deformation, affecting the dimensional accuracy of the core, resulting in low dimensional accuracy of the core.
[0003] Therefore, how to improve the dimensional accuracy of triangular iron-based nanocrystalline cores and the production work efficiency is an urgent problem to be solved at present. Summary of the Utility Model
[0004] The purpose of the utility model is to provide a sizing tool for a triangular iron-based nanocrystalline core. When the sizing tool for the triangular iron-based nanocrystalline core is applied to the preparation of the core, it is simple and reliable to assemble with the coiled strip, effectively improving the production efficiency. Moreover, good tooling cooperation is carried out on both the inner and outer circles of the coiled strip for sizing, which can effectively avoid the deformation of the three straight edges of the core in subsequent processing technologies such as heat treatment, and effectively improve the dimensional accuracy of the core.
[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0006] A sizing tool for a triangular iron-based nanocrystalline core, comprising:
[0007] A sizing inner core, the sizing inner core has a triangular prism structure, the sizing inner core includes at least two sub-cores, the at least two sub-cores are sequentially spliced along a first direction, and the at least two sub-cores are spliced to form the triangular prism structure. The first direction is perpendicular to the axis of the triangular prism structure. The outer periphery of the triangular prism structure is used to cooperate with the inner circle of the coiled strip and support the inner circle of the coiled strip; the two sub-cores that are spliced with each other are detachably connected; wherein, the splicing surface between at least two adjacent sub-cores is an inclined surface, the inclined surface is inclined relative to the axis of the triangular prism structure and forms a preset angle with the axis of the triangular prism structure;
[0008] A shaped shell, the shaped shell includes a left half shell and a right half shell that are spliced together. One side of the left half shell facing the right half shell has a left groove, and one side of the right half shell facing the left half shell has a right groove. The bottoms of the left groove and the right groove are opposite to each other, and they are spliced to form a triangular prism-shaped cavity that extends through in the second direction; the cross-sectional triangle of the triangular prism-shaped cavity is similar to the cross-sectional triangle of the triangular prism structure. The second direction is used to be parallel to the axis line of the triangular prism structure. The triangular prism-shaped cavity is used to cooperate with the outer ring of the wound strip and accommodate the wound strip and the shaped inner core; the left half shell and the right half shell are detachably connected.
[0009] When the above-mentioned shaping tooling for the triangular iron-based nanocrystalline core is applied to prepare the core, it is simple and reliable to assemble with the wound strip, effectively improving the production efficiency. Moreover, good cooperation of the tooling is carried out on both the inner ring and the outer ring of the wound strip for shaping, which can effectively avoid the deformation of the three straight edges of the core in subsequent processing technologies such as heat treatment, and effectively improve the dimensional accuracy of the core.
[0010] Optionally, it is characterized in that the shaped inner core includes three sub-cores, and the three sub-cores are respectively a left sub-core, a middle sub-core and a right sub-core that are spliced in sequence.
[0011] Optionally, each sub-core includes a side edge of the triangular prism structure.
[0012] Optionally, the splicing surface of the left sub-core facing the middle sub-core is a first inclined surface. In the direction from the first end of the triangular prism structure to the second end of the triangular prism structure, the first inclined surface extends obliquely from the first end towards the middle sub-core side to the second end; and / or,
[0013] The splicing surface of the right sub-core facing the middle sub-core is a second inclined surface. In the direction from the first end of the triangular prism structure to the second end of the triangular prism structure, the second inclined surface extends obliquely from the first end towards the middle sub-core side to the second end;
[0014] The middle sub-core has a wedge-shaped structure, and the two opposite splicing surfaces of the middle sub-core are respectively matched with the splicing surface of the left sub-core and the splicing surface of the right sub-core.
[0015] Optionally, the splicing surfaces on both sides of the middle sub-core are symmetrically arranged, and the left sub-core and the right sub-core are symmetric with respect to the middle sub-core structure.
[0016] Optionally, in the triangular prism structure, there is an arc transition between every two adjacent side surfaces.
[0017] Optionally, between the two spliced sub-cores, a strip-shaped groove extending along the axial line extension direction of the triangular prism structure is provided on the splicing surface of one of the sub-cores, and a strip-shaped protrusion matching with the strip-shaped groove is provided on the splicing surface of the other sub-core.
[0018] Optionally, the shaping tooling for the triangular iron-based nanocrystalline core further includes a connection component for fixing the left half-shell and the right half-shell;
[0019] The connection component includes: a first bolt, a second bolt, and a connection plate; on at least one side surface of the shaping outer shell having a splicing seam, a first threaded hole is provided on the left half-shell, and a second threaded hole corresponding to the first threaded hole is provided on the right half-shell; the connection plate is provided with a first connection hole and a second connection hole respectively corresponding to the first threaded hole and the second threaded hole one by one, the connection plate is arranged on the side surface, the first bolt is used to pass through the first connection hole and be in threaded cooperation with the first threaded hole, and the second bolt is used to pass through the second connection hole and be in threaded cooperation with the second threaded hole, so that the first bolt and the second bolt press the connection plate against the side surface; or,
[0020] The connection component is a snap component. On at least one side surface of the shaping outer shell having a splicing seam, a snap member is provided on one of the left half-shell and the right half-shell, and a card slot is provided on the other. One end of the snap member is hinged to the left half-shell or the right half-shell, and the other end is in snap fit with the card slot; or,
[0021] The connection component is a clamp. The clamp straddles the splicing seam between the left half-shell and the right half-shell and is sleeved on the outer peripheral sides of the left half-shell and the right half-shell, so that the left half-shell and the right half-shell are pressed and fixed.
[0022] Optionally, the first connection hole and the second connection hole are communicated to form a strip-shaped through hole.
[0023] Optionally, the left groove and the right groove are symmetrically arranged relative to the splicing surface of the two of them. Description of the Drawings
[0024] The specification drawings forming a part of the present application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. Among them:
[0025] Figure 1 is a schematic structural diagram of a shaping tooling for a triangular iron-based nanocrystalline core provided by an embodiment of the present invention;
[0026] Figure 2Schematic diagram of the structure of a shaping inner core provided by an embodiment of the present utility model;
[0027] Figure 3 Schematic diagram of the structure of a shaping outer shell provided by an embodiment of the present utility model;
[0028] Figure 4 Schematic diagram of the structure of a shaping outer shell provided by an embodiment of the present utility model.
[0029] Reference numerals: 1 - shaping inner core; 2 - shaping outer shell; 3 - wound strip; 4 - connecting component; 11 - sub-core; 12 - strip-shaped groove; 13 - strip-shaped protrusion; 21 - left half shell; 22 - right half shell; 23 - triangular prism-shaped cavity; 211 - left groove; 221 - right groove. Detailed implementation manners
[0030] The present utility model will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments. Each example is provided by way of explanation of the present utility model rather than a limitation thereof. In fact, those skilled in the art will appreciate that modifications and variations can be made to the present utility model without departing from the scope or spirit thereof. For example, features shown or described as part of one embodiment can be used in another embodiment to yield yet another embodiment. Therefore, it is desirable that the present utility model encompasses such modifications and variations that fall within the scope of the appended claims and their equivalents.
[0031] In the description of the present utility model, the orientation or positional relationships indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model rather than requiring the present utility model to be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of the present utility model. The terms "connected", "connected to", and "disposed" used in the present utility model should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection; it can be directly connected or indirectly connected through an intermediate component. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.
[0032] Refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 4As shown in the figure, the present utility model provides a sizing tooling for a triangular iron-based nanocrystalline core. The sizing tooling includes a sizing inner core 1 and a sizing outer shell 2. Among them, the sizing inner core 1 is a triangular prism structure, and the sizing inner core 1 includes at least two sub-cores 11. At least two sub-cores 11 are sequentially spliced along a first direction, and at least two sub-cores 11 are spliced to form the triangular prism structure. The first direction is perpendicular to the axis of the triangular prism structure. The outer periphery of the triangular prism structure is used to cooperate with the inner ring of the winding strip 3 and support the inner ring of the winding strip 3. The two sub-cores 11 that are spliced together are detachably connected. Among them, the splicing surface between every two adjacent sub-cores 11 can be called a pair of adjacent spliced sub-cores 11. At least one pair of splicing surfaces between adjacent sub-cores 11 can be set as an inclined surface, and the inclined surface is inclined relative to the axis of the triangular prism structure and forms a preset angle with the axis of the triangular prism structure. The sizing outer shell 2 includes a left half shell 21 and a right half shell 22 that are spliced together. The side of the left half shell 21 facing the right half shell 22 has a left groove 211, and the side of the right half shell 22 facing the left half shell 21 has a right groove 221. The bottoms of the left groove 211 and the right groove 221 are opposite, and they are spliced to form a triangular prism-shaped cavity 23 that extends through along a second direction. The cross-sectional triangle of the triangular prism-shaped cavity 23 is similar to the cross-sectional triangle of the triangular prism structure. The second direction is used to be parallel to the axis of the triangular prism structure. The triangular prism-shaped cavity 23 is used to cooperate with the outer ring of the winding strip 3 and accommodate the winding strip 3 and the sizing inner core 1. The left half shell 21 and the right half shell 22 are detachably connected.
[0033] Among them, the finished triangular core to be prepared is an annular triangular core (hereinafter also directly referred to as the core for convenience of description). The inside of the core has a triangular prism-shaped cavity, and the outer shape of the core is a triangular prism-shaped outer shape. Specifically, when using the above-mentioned sizing tooling for the triangular iron-based nanocrystalline core to prepare the triangular iron-based nanocrystalline core, the sizing inner core 1 is to be filled inside the core for sizing, and the sizing outer shell 2 needs to be sleeved on the outer peripheral side of the core for sizing. Therefore, first, select the sizes of the sizing inner core 1 and the sizing outer shell 2 according to the size of the core to be prepared. Selecting the sizes of the sizing inner core 1 and the sizing outer shell 2 specifically includes that the outer periphery of the sizing inner core 1 is adapted to the inner ring size of the core, and the inner periphery of the triangular prism-shaped cavity 23 of the sizing outer shell 2 is adapted to the outer peripheral side size of the core. In addition, in the extending direction of the axis of the core, the heights of the sizing outer shell 2 and the sizing inner core 1 are adapted to the height size of the core, which is beneficial to improving the dimensional accuracy of the core prepared subsequently. It should be noted that the cross-sectional shape of the core can be any triangle, or an isosceles triangle, or an equilateral triangle. The shape of the core cross-section is selected according to actual needs, and the sizes and shapes of the sizing inner core 1 and the sizing outer shell 2 of the sizing tooling are selected to adapt to the core.
[0034] After selecting the sizes of the sizing inner core 1 and the sizing outer shell 2 that are adapted to the iron core to be prepared, prepare the prepared sizing tooling. Preferably, 304 stainless steel material can be used to prepare the sizing inner core 1 and the sizing outer shell 2, and then start preparing the iron core. Specifically:
[0035] First, wind the strip to form an annular wound strip. Among them, the inner and outer diameters of the annulus are respectively equal to the circumferences of the inner and outer diameters of the triangular iron core to be prepared. Through calculation, convert the inner and outer diameters of the triangular iron core to be prepared into the inner and outer diameters of the annular wound strip; wind the strip according to the converted sizes to form a wound strip that meets the size requirements. Preferably, multiple annular wound strips can be wound and then placed coaxially and stacked together. Fill the sizing inner core 1 into the inner circle of the wound strip. Specifically, the sizing inner core 1 is a spliced split type. One sub-core 11 can be filled into the inner circle of the wound strip first, and then the other sub-core 11 can be filled. Since the splicing surface between the sub-cores 11 is an inclined surface, after the first sub-core 11 is filled, a wedge-shaped cavity will be formed in the inner circle of the wound strip. Fill the subsequent sub-cores 11 at the end with a larger opening in the inner circle of the wound strip, which is convenient for filling, saves time and effort, and is beneficial to improving work efficiency. After the sizing inner core 1 is completely filled, it fits tightly with the inner circle of the wound strip, fills the inner circle of the wound strip, and makes the wound strip in a triangular prism shape, which is beneficial to ensuring the dimensional accuracy of the inner circle of the iron core. Next, the left half shell 21 and the right half shell 22 are buckled and spliced from the outside, and the wound strip in a triangular prism shape is sleeved in the triangular prism-shaped cavity 23 of the sizing outer shell 2, and then the left half shell 21 and the right half shell 22 are fixedly connected. It is very simple and reliable, and can well shape the outer circle of the wound strip. At this point, the inner circle of the wound strip is supported and shaped by the sizing inner core 1, and the outer circle is pressed and shaped by the sizing outer shell 2. When the sizing inner core 1 and the sizing outer shell 2 are assembled with the wound strip, both are relatively labor-saving, simple and reliable, greatly improving work efficiency. Moreover, the inner and outer circles of the wound strip are respectively well shaped by the inner and outer toolings, which is beneficial to ensuring the dimensional accuracy of the subsequent iron core finished product and improving the qualified rate of the iron core product.
[0036] After the winding strip is assembled with the sizing tooling, subsequent heat treatment and other processes are carried out. Specifically, the sizing tooling with the winding strip can be placed in a heat treatment furnace, and sizing treatment is carried out at 400 °C for 60 min. After sizing, the winding strip restored to room temperature is taken out of the sizing outer shell, and then the sizing inner core is taken out. Then the annular winding strip is sized into a triangular iron core. Then, multiple iron cores are stacked on a tray and placed in a heat treatment furnace, and annealing treatment is carried out according to a holding temperature of 560 °C and a holding time of 100 min. Among them, when disassembling the sizing outer shell 2, as long as the fixed connection between the left half shell 21 and the right half shell 22 is released, the sizing outer shell 2 can be easily disassembled. Since the sizing inner core 1 is also split-type, the split cores 11 can be removed one by one in sequence, which is relatively labor-saving, effectively improving the work efficiency of tooling disassembly, and will not damage the iron core itself or cause the iron core to deform, which is beneficial to ensuring the dimensional accuracy of the iron core finished product.
[0037] Therefore, when the sizing tooling of the above triangular iron-based nanocrystalline iron core is applied to prepare an iron core, it is simple and reliable to assemble with the winding strip, effectively improving the production efficiency. Moreover, good tooling cooperation is carried out on both the inner and outer circles of the winding strip for sizing, which can effectively avoid the deformation of the three straight edges of the iron core in subsequent processing processes such as heat treatment, and effectively improve the dimensional accuracy of the iron core.
[0038] In the sizing tooling of the above triangular iron-based nanocrystalline iron core, as Figure 2 shown, for the specific setting of the sizing inner core 1, it can be selected to set the sizing inner core 1 to include three split cores 11, and the three split cores 11 are respectively the left split core 11, the middle split core 11 and the right split core 11 that are spliced in sequence. Specifically, for the division of the three split cores 11, each split core 11 can include a side edge of a triangular prism structure. From the direction of the triangular cross-section, that is, each split core 11 has a triangular corner, so that the splicing seam of the split cores 11 is not at the side edge of the triangular prism structure, which is convenient for processing and can better support and size the inner circle of the winding strip.
[0039] For the setting of the three split cores, the splicing surface between every two adjacent split cores can be set such that the splicing surface between a pair of adjacent split cores is an inclined surface, or alternatively, the splicing surfaces between two pairs of adjacent split cores can both be set as inclined surfaces.
[0040] Specifically, referring to Figure 2As shown, for the setting of the splicing surface between the split cores 11, as a possible implementation, the splicing surface of the left split core 11 facing the middle split core 11 is set as the first inclined surface. In the direction from the first end of the triangular prism structure to the second end of the triangular prism structure, the first inclined surface extends obliquely from the first end towards the middle split core 11 side to the second end; and the splicing surface of the right split core 11 facing the middle split core 11 is the second inclined surface. In the direction from the first end of the triangular prism structure to the second end of the triangular prism structure, the second inclined surface extends obliquely from the first end towards the middle split core 11 side to the second end; the middle split core 11 has a wedge-shaped structure, and the two opposite splicing surfaces of the middle split core 11 cooperate with the splicing surfaces of the left split core 11 and the right split core 11 respectively, and the splicing surfaces on both sides of the middle split core 11 are inclined wedge-shaped surfaces. When filling the split cores, the left split core and the right split core can be filled first, and then some wedge-shaped holes can be formed in the middle of the left split core and the right split core, and the opening on this side of the first end of the triangular prism structure is relatively large, which is convenient for the middle split core to be filled, more labor-saving, and conducive to improving the filling efficiency.
[0041] For the setting of the above three split cores 11, preferably, the splicing surfaces on both sides of the middle split core 11 are symmetrically arranged, and the left split core 11 and the right split core 11 are symmetrically structured with respect to the middle split core 11, which is convenient for processing and manufacturing.
[0042] Preferably, the included angle between the first inclined surface and the axis line of the triangular prism structure can be 10° to 20°, and specifically can be selected as 15°, that is, the included angle between the first inclined surface and the end surface of the second end of the triangular prism is 85°; the included angle between the second inclined surface and the axis line of the triangular prism structure is 10° to 20°, and specifically can be selected as 15°, that is, the included angle between the second inclined surface and the end surface of the second end of the triangular prism is 85°.
[0043] As another possible implementation, the splicing surface of one of the left split core and the right split core is an inclined surface, the middle split core has a wedge-shaped structure, and one of the two sides of the middle split core is an inclined wedge-shaped surface that cooperates with the inclined surface.
[0044] In the above-mentioned shaping tooling for the triangular iron-based nanocrystalline core, there is an arc transition between every two adjacent side surfaces in the triangular prism structure, that is, all three edges are rounded chamfered edges, which adapts to the shape of the core and fits better with the inner circle of the core, and is conducive to improving the dimensional accuracy of the core.
[0045] In order to make the splicing between adjacent split cores more firm, as a possible implementation, combined with Figure 1 , such as Figure 2As shown, between two mutually spliced sub-cores 11, a strip groove 12 extending along the extension direction of the axial centerline of the triangular prism structure is provided on the splicing surface of one of the sub-cores 11, and a strip protrusion 13 cooperating with the strip groove 12 is provided on the splicing surface of the other sub-core 11. The strip protrusion 13 can be embedded in the strip groove 12, so that the splicing stability between the two mutually spliced sub-cores 11 is better, and the strip groove 12 and the strip protrusion 13 can also play a positioning role, so that the splicing position between the two adjacent sub-cores 11 is accurate.
[0046] On the other hand, for the setting of the shaped shell, the left groove 211 and the right groove 221 can be set to be symmetrical with respect to the joint surface structure thereof, and the cross section of the triangular prism-shaped cavity 23 is set to be an isosceles triangle, or an equilateral triangle.
[0047] Among them, for the fixation between the left half shell and the right half shell, a connecting component can be set to achieve the fixation between the left half shell and the right half shell, and there are multiple optional setting methods for setting the connecting component, among which the specific setting methods can be as follows:
[0048] Method 1:
[0049] like Figure 3 and Figure 4 As shown, the connecting assembly 4 includes: a first bolt, a second bolt, and a connecting plate; on at least one side of the molded shell 2 having a joint seam, exemplarily, it can be selected on the side parallel to the axial center line of the triangular prism-shaped cavity 23 in the molded shell 2, on which side, a first threaded hole is provided on the left half shell 21, and a second threaded hole corresponding to the first threaded hole is provided on the right half shell 22; the connecting plate is provided with a first connecting hole and a second connecting hole corresponding to the first threaded hole and the second threaded hole respectively, and the connecting plate is arranged on the side, the first bolt passes through the first connecting hole and is threadedly engaged with the first threaded hole, and the second bolt passes through the second connecting hole and is threadedly engaged with the second threaded hole, so that the first bolt and the second bolt press the connecting plate to the side, and at the same time, the connecting plate fixes the left half shell 21 and the right half shell 22 firmly and reliably, thereby ensuring the connection stability of the left half shell 21 and the right half shell 22.
[0050] Specifically, in the above-mentioned method 1, in order to facilitate the installation of the first bolt and the second bolt, the first connecting hole and the second connecting hole are connected to form a strip-shaped through hole, which can effectively avoid inaccurate alignment between the first connecting hole and the second connecting hole and the first threaded hole and the second threaded hole respectively due to processing errors, thereby facilitating the installation and connection of the first bolt and the second bolt.
[0051] Method 2:
[0052] refer to Figure 3As shown, the connecting component can be a snap component. On at least one side of the shaping housing 2 having a splicing seam, for example, on the side of the shaping housing 2 parallel to the axis of the triangular prism-shaped cavity 23, on this side, one of the left half-shell 21 and the right half-shell 22 is provided with a snap member, and the other is provided with a slot. One end of the snap member is hinged to the left half-shell 21 or the right half-shell 22, and the other end of the snap member is engaged with the slot for snap connection. The connection method of the snap component is simple and reliable, easy to operate, and is beneficial to improving work efficiency.
[0053] Method 3:
[0054] Reference Figure 3 As shown, the connecting component can also be a clamp. The clamp straddles the splicing seam between the left half-shell 21 and the right half-shell 22 and is sleeved on the outer peripheral sides of the left half-shell 21 and the right half-shell 22, so that the left half-shell 21 and the right half-shell 22 are pressed and fixed. The clamp can be arranged perpendicular to the axis of the triangular prism-shaped cavity 23 to tie the left half-shell 21 and the right half-shell 22 together, which is firm and reliable.
[0055] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, various changes and modifications can be made to the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.
Claims
1. A shaping tool for a triangular iron-based nanocrystalline core, characterized in that: include: A shaping inner core, wherein the shaping inner core has a triangular prism structure, and the shaping inner core comprises at least two sub-cores, wherein the at least two sub-cores are sequentially spliced along a first direction, and the at least two sub-cores are spliced to form the triangular prism structure, wherein the first direction is perpendicular to the axis of the triangular prism structure, and the outer periphery of the triangular prism structure is used to cooperate with the inner ring of the winding strip and to be supported on the inner ring of the winding strip; the two sub-cores spliced to each other are detachably connected; wherein the splicing surface between at least two adjacent sub-cores is an inclined surface, and the inclined surface is inclined relative to the axis of the triangular prism structure and forms a preset angle with the axis of the triangular prism structure; A shaped shell, the shaped shell comprising a left half shell and a right half shell spliced to each other, the left half shell having a left groove on a side facing the right half shell, the right half shell having a right groove on a side facing the left half shell, the left groove and the right groove having opposite bottoms, and spliced to form a triangular prism-shaped cavity extending through along the second direction; The cross-sectional triangle of the triangular prism-shaped cavity is similar to the cross-sectional triangle of the triangular prism structure; the second direction is used to be parallel to the axis centerline of the triangular prism structure; the triangular prism-shaped cavity is used to cooperate with the outer ring of the winding strip and to accommodate the winding strip and the shaping inner core; the left half shell and the right half shell are detachably connected.
2. The shaping tool for the triangular iron-based nanocrystalline core according to claim 1, characterized in that: The shaping inner core comprises three sub-cores, and the three sub-cores are respectively a left sub-core, a middle sub-core and a right sub-core which are spliced in sequence.
3. The shaping tool for the triangular iron-based nanocrystalline core according to claim 2, characterized in that: Each of the sub-cores includes a side edge of the triangular prism structure.
4. The shaping tool for the triangular iron-based nanocrystalline core according to claim 2, characterized in that: The splicing surface of the left split core toward the middle split core is a first inclined surface, which points from the first end of the triangular prism structure to the direction of the second end of the triangular prism structure, and the first inclined surface extends obliquely from the first end toward the direction of one side of the middle split core to the second end; and / or, The splicing surface of the right split core toward the middle split core is a second inclined surface, which points from the first end of the triangular prism structure to the direction of the second end of the triangular prism structure, and the second inclined surface extends obliquely from the first end toward the direction of one side of the middle split core to the second end; The middle split core has a wedge-shaped structure, and two opposite splicing surfaces of the middle split core are matched with the splicing surfaces of the left split core and the right split core respectively.
5. The shaping tool for the triangular iron-based nanocrystalline core according to claim 2, characterized in that: The splicing surfaces on both sides of the middle split core are symmetrically arranged, and the left split core and the right split core are symmetrical relative to the middle split core structure.
6. The shaping tool for the triangular iron-based nanocrystalline core according to claim 1, characterized in that: In the triangular prism structure, there is an arc transition between every two adjacent side surfaces.
7. The shaping tool for the triangular iron-based nanocrystalline core according to any one of claims 1 to 6, characterized in that: Between the two mutually spliced sub-cores, a strip groove extending along the extension direction of the axis of the triangular prism structure is arranged on the splicing surface of one of the sub-cores, and a strip protrusion cooperating with the strip groove is arranged on the splicing surface of the other sub-core.
8. The shaping tool for the triangular iron-based nanocrystalline core according to any one of claims 1 to 6, characterized in that: Also included is a connecting assembly for fixing the left half shell and the right half shell; The connecting assembly comprises: a first bolt, a second bolt, and a connecting plate; on at least one side of the shaped shell having a joint seam, a first threaded hole is provided on the left half shell, and a second threaded hole corresponding to the first threaded hole is provided on the right half shell; a first connecting hole and a second connecting hole corresponding to the first threaded hole and the second threaded hole are provided on the connecting plate, respectively, the connecting plate is arranged on the side, the first bolt is used to pass through the first connecting hole and threadedly cooperate with the first threaded hole, and the second bolt is used to pass through the second connecting hole and threadedly cooperate with the second threaded hole, so that the first bolt and the second bolt press the connecting plate against the side; or, The connecting assembly is a buckle assembly, and on at least one side of the molded shell having a joint seam, one of the left half shell and the right half shell is provided with a buckle, and the other is provided with a slot, one end of the buckle is hinged to the left half shell or the right half shell, and the other end is engaged with the slot; or, The connecting component is a clamp, which spans the joint between the left half shell and the right half shell and is sleeved on the outer circumference of the left half shell and the right half shell to press and fix the left half shell and the right half shell.
9. The shaping tool for the triangular iron-based nanocrystalline core according to claim 8, characterized in that: The first connection hole and the second connection hole are connected to form a strip-shaped through hole.
10. The shaping tool for the triangular iron-based nanocrystalline core according to claim 1, characterized in that: The left groove and the right groove are symmetrically arranged relative to the joint surface thereof.