Annular magnetic core forming die

Abstract

The utility model relates to the technical field of magnetic core production, in particular to an annular magnetic core forming die which comprises a base and further comprises a lower die body, an upper die body and a lower die body. A pressing table matched with the columnar groove is integrally formed on the bottom surface of the upper mold; the core rod movably penetrates through the upper die and the pressing table in the vertical direction; the n-shaped plate is fixed at the upper end of the core rod; the vertical limiting assembly is arranged at the top of the upper mold; the ejection assembly is arranged between the base and the lower mold; and the two supporting plates are arranged on the left side and the right side of the lower end of the n-shaped plate correspondingly, each supporting plate is arranged in a telescopic mode, and the supporting plates in the stretching state are used for supporting the ejection assembly. According to the utility model, the annular magnetic core is separated from the pressing table, the core rod and the lower die in stages, so that the friction force borne by the annular magnetic core is gradually reduced, and the annular magnetic core can be conveniently taken out.

Description

Technical Field

[0001] This utility model relates to the field of magnetic core production technology, specifically to a ring-shaped magnetic core forming mold. Background Technology

[0002] A toroidal magnetic core, also known as a ring-shaped magnetic core, is a ring-shaped structure made of magnetic material. In the production and processing of a toroidal magnetic core, the mixed materials are placed into a mold with a ring-shaped structure, and then appropriate pressure is applied to form the initial shape of the toroidal core within the mold. After molding and solidification, the toroidal magnetic core needs to be removed from the mold.

[0003] Traditional molding dies generally consist of an upper mold and a lower mold. In order to form a ring-shaped magnetic core, a core rod needs to be installed in the molding cavity of the lower mold. Then, the upper mold is installed above the lower mold to form a ring structure, thereby producing a ring-shaped magnetic core.

[0004] However, during the process of removing the ring core from the mold, the contact area is too large due to the simultaneous contact between the lower mold and the core rod. The friction between the contact areas makes it difficult to remove the ring core from the mold. To address this, we propose a ring core forming mold to effectively solve the above-mentioned drawbacks. Utility Model Content

[0005] The purpose of this invention is to provide a ring-shaped magnetic core forming mold to solve the problems mentioned in the background art.

[0006] This utility model is achieved through the following technical solution: a ring-shaped magnetic core forming mold, including a base, and further comprising:

[0007] The lower mold is mounted on top of the base and has a columnar groove inside.

[0008] The upper mold has a pressure table integrally formed on its bottom surface that is adapted to the columnar groove;

[0009] The mandrel moves vertically through the upper mold and the pressure table, and the central axis of the mandrel coincides with the central axis of the columnar groove; the mandrel, the pressure table and the lower mold cooperate to form an annular magnetic core forming cavity;

[0010] A U-shaped plate, which is fixed to the upper end of the mandrel;

[0011] A vertical limiting component is provided on the top of the upper mold to prevent the slant plate from vertically exceeding its displacement limit.

[0012] An ejection assembly is disposed between the base and the lower mold and is used to eject the annular magnetic core from the annular magnetic core forming cavity;

[0013] Two support plates are respectively set on the lower left and right sides of the U-shaped plate. Each support plate is telescopic. The support plate in the extended state is used to lift the ejector component.

[0014] Optionally, the vertical limiting assembly includes limiting plates fixed at intervals along the length of the swivel plate to the top of the upper mold, and each limiting plate has a limiting hole in the vertical direction for the swivel plate to pass through.

[0015] Optionally, the ejection assembly includes an ejection platform movably disposed within the columnar groove and located at the lower end of the annular magnetic core forming cavity. Several connecting rods are fixedly connected parallel to and spaced apart at the bottom of the ejection platform. Each connecting rod moves vertically through the lower mold and is fixedly connected to a connecting plate at its lower end. An elastic element is connected between the connecting plate and the base. A support plate in an extended state is used to lift the connecting plate.

[0016] Optionally, the elastic element consists of several ejector springs connected between the connecting plate and the base, each ejector spring applying an upward elastic force to the connecting plate.

[0017] Optionally, the lower end of the U-shaped plate is fixedly connected to a fixing plate corresponding to each support plate, and a telescopic groove for the support plate to extend and retract is provided in each fixing plate. A return spring is connected between the inner end of each support plate and the corresponding fixing plate.

[0018] Optionally, a linkage rod is fixedly connected to the top of the tray, and a strip hole is provided on the top of the fixed plate for the linkage rod to move through.

[0019] A linkage plate that moves horizontally through the U-shaped plate is fixedly connected to the upper end of the linkage rod. A first inclined structure is provided on the upper and lower sides of the linkage plate. A convex plate corresponding to the linkage plate is fixedly connected to the outer surface of the lower mold. A second inclined structure that is compatible with the first inclined structure is provided on the upper and lower sides of the convex plate.

[0020] Compared with the prior art, this utility model provides a ring-shaped magnetic core forming mold, which has the following characteristics:

[0021] Beneficial effects:

[0022] This invention utilizes a pressure table, a mandrel, a U-shaped plate, a vertical limiting component, an ejection component, and a support plate. During mold removal, the upper mold moves upward, causing the pressure table to move upward, thus separating the pressure table from the annular magnetic core. When the upper mold rises to a certain height, the U-shaped plate and the vertical limiting component work together to lift the mandrel, separating it from the annular magnetic core. As the upper mold continues to rise to a certain height, the U-shaped plate and the support plate work together to lift the ejection component, ejecting the annular magnetic core from the lower mold and separating it from the lower mold. This invention separates the annular magnetic core from the pressure table, mandrel, and lower mold in stages, gradually reducing the frictional force on the annular magnetic core and facilitating its removal. Attached Figure Description

[0023] Figure 1 This is a perspective view of the present utility model;

[0024] Figure 2 This is a diagram showing the state of the ring-shaped magnetic core forming according to this utility model;

[0025] Figure 3 This is a diagram showing the state of the pressure table of this utility model moving upward a certain distance;

[0026] Figure 4 This is a diagram showing the state of the mandrel of this utility model moving upward a certain distance;

[0027] Figure 5 This is a diagram showing the state of the top of the device moving upward a certain distance.

[0028] Figure 6 This is a schematic diagram of the internal structure of the fixing plate of this utility model.

[0029] In the diagram: 1. Base; 2. Lower mold; 3. Upper mold; 4. Pressing table; 5. Core rod; 6. Annular magnetic core forming cavity; 7. U-shaped plate; 8. Vertical limiting component; 801. Limiting plate; 802. Limiting hole; 9. Ejection component; 901. Ejection platform; 902. Connecting rod; 903. Connecting plate; 904. Elastic element; 10. Support plate; 11. Fixing plate; 12. Telescopic groove; 13. Return spring; 14. Linkage rod; 15. Strip hole; 16. Linkage plate; 17. Protruding plate. Detailed Implementation

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] Example: Please refer to Figures 1 to 6 A ring-shaped magnetic core forming mold includes a base 1, which provides support for other components in the mold. This embodiment also includes a lower mold 2, an upper mold 3, a core rod 5, a die plate 7, a vertical limiting assembly 8, an ejection assembly 9, and two support plates 10. Through the cooperation of these components, the ring-shaped magnetic core can be separated from the pressure table 4, the core rod 5, and the lower mold 2 in stages, gradually reducing the frictional force on the ring-shaped magnetic core and facilitating its removal.

[0032] The lower mold 2 is mounted on top of the base 1. In this embodiment, several legs are fixedly connected between the outer bottom of the lower mold 2 and the base 1, allowing the lower mold 2 to be mounted on the base 1, facilitating the installation of other components below the lower mold 2. A columnar groove is formed inside the lower mold 2 to create the outer contour of the annular magnetic core. The bottom surface of the upper mold 3 is integrally formed with a pressure table 4 adapted to the columnar groove. Applying pressure to the upper mold 3 causes the pressure table 4 to extend into the columnar groove, allowing the material to be formed within the groove. The core rod 5 moves vertically through the upper mold 3 and the pressure table 4. The central axis of the core rod 5 coincides with the central axis of the columnar groove, thus enabling the core rod 5, the pressure table 4, and the lower mold 2 to cooperate and form the annular magnetic core forming cavity 6, thereby producing the annular magnetic core. The molded plate 7 is fixed to the upper end of the core rod 5 and can move synchronously with the core rod 5.

[0033] The following is a detailed introduction to the vertical limiting component 8:

[0034] The vertical limiting component 8 is disposed on the top of the upper mold 3 to prevent the truncated plate 7 from vertically over-displaced. Specifically, the vertical limiting component 8 includes limiting plates 801 fixed at intervals along the length direction of the truncated plate 7 to the top of the upper mold 3, and each limiting plate 801 has a limiting hole 802 in the vertical direction for the truncated plate 7 to pass through. During the ring-shaped magnetic core forming process, the truncated plate 7 is located at the highest point of the limiting hole 802, thereby contacting the limiting plate 801, thus ensuring that the core rod 5 is always located within the columnar groove, cooperating with other components to form the ring-shaped magnetic core forming cavity 6, such as... Figure 2 As shown. When the upper mold 3 moves upward to a certain height, the ferrule plate 7 is located at the lowest point of the limiting hole 802, thus contacting the upper mold 3; when the upper mold 3 continues to move upward, it can drive the ferrule plate 7 and the mandrel 5 to move upward, as shown. Figure 3 and Figure 4 As shown.

[0035] The following is a detailed introduction to the top-out component 9:

[0036] The ejection assembly 9 is disposed between the base 1 and the lower mold 2, and is used to eject the annular magnetic core from the annular magnetic core forming cavity 6. Specifically, the ejection assembly 9 includes an ejection platform 901 movably disposed in the columnar groove and located at the lower end of the annular magnetic core forming cavity 6. Several connecting rods 902 are fixedly connected parallel to and spaced apart at the bottom of the ejection platform 901. Each connecting rod 902 moves vertically through the lower mold 2 and its lower end is fixedly connected to a connecting plate 903. An elastic element 904 is connected between the connecting plate 903 and the base 1. A support plate 10 in an extended state is used to lift the connecting plate 903. After the support plate 10 lifts the connecting plate 903, the annular magnetic core can be ejected through the ejection platform 901, thereby separating the annular magnetic core from the lower mold 2. Figure 5 As shown.

[0037] In this embodiment, the elastic element 904 consists of several ejector springs connected between the connecting plate 903 and the base 1, each ejector spring applying an upward elastic force to the connecting plate 903. When the support plate 10 is no longer in contact with the connecting plate 903, the elastic force applied by the ejector springs prevents the annular magnetic core from being fully retracted into the lower mold 2, thereby facilitating the removal of the annular magnetic core from the lower mold 2.

[0038] It should be further explained that the two support plates 10 are respectively disposed on the lower left and right sides of the U-shaped plate 7. Each support plate 10 is telescopic, and the extended support plate 10 is used to lift the ejector assembly 9. Specifically, the lower end of the U-shaped plate 7 is fixedly connected to a fixing plate 11 corresponding to each support plate 10. Each fixing plate 11 has a telescopic groove 12 for the support plate 10 to extend and retract. A return spring 13 is connected between the inner end of each support plate 10 and the corresponding fixing plate 11, so that the support plate 10 can return to its original position.

[0039] A linkage rod 14 is fixedly connected to the top of the pallet 10. A strip hole 15 is provided on the top of the fixed plate 11 for the linkage rod 14 to move through. The linkage rod 14 can move left and right along the strip hole 15, thereby retracting the pallet 10 into the telescopic groove 12, or allowing the pallet 10 to extend out of the telescopic groove 12.

[0040] A linkage plate 16, which moves horizontally through the U-shaped plate 7, is fixedly connected to the upper end of the linkage rod 14. First inclined surfaces are provided on the upper and lower sides of the linkage plate 16. A convex plate 17, corresponding to the linkage plate 16, is fixedly connected to the outer surface of the lower mold 2. Second inclined surfaces, adapted to the first inclined surfaces, are provided on the upper and lower sides of the convex plate 17. When the support plate 10 lifts the connecting plate 903 and moves it upward a certain distance, the first inclined surface on the upper side of the linkage plate 16 contacts the second inclined surface on the lower side of the convex plate 17, thereby driving the linkage plate 16 to move horizontally. Then, through the action of the linkage rod 14, the support plate 10 is retracted into the telescopic groove 12, allowing the lower mold 2 and the upper mold 3 to be completely separated. This facilitates the removal of the annular magnetic core from the lower mold 2 or the addition of materials to the lower mold 2.

[0041] It should be added that, in order for the pallet 10 to smoothly lift the connecting plate 903, a positioning structure is required. For example, several positioning rods are fixedly connected parallel to and spaced apart at the bottom of the upper mold 3, and positioning grooves corresponding to each positioning rod are provided on the lower mold 2. Each positioning rod moves vertically into the corresponding positioning groove, thereby positioning the lower mold 2 and the upper mold 3, making it difficult for the lower mold 2 and the upper mold 3 to rotate relative to each other, thus ensuring that the pallet 10 can be aligned with the connecting plate 903 and smoothly lift the connecting plate 903.

[0042] The working principle is as follows: After the annular magnetic core is pressed and formed in the annular magnetic core forming cavity 6, the upper mold 3 is moved upward a certain distance, thereby separating the pressing table 4 from the annular magnetic core. The upper mold 3 continues to move upward, causing the swivel plate 7 to contact the upper mold 3, thereby driving the swivel plate 7 to move upward, causing the core rod 5 to separate from the annular magnetic core. The upper mold 3 continues to move upward, and when the support plate 10 contacts the connecting plate 903, it drives the connecting plate 903 to move upward, thereby separating the annular magnetic core from the lower mold 2 through the ejector plate 901. When the first inclined structure on the upper side of the linkage plate 16 contacts the second inclined structure on the lower side of the convex plate 17, it can drive the linkage plate 16 to move horizontally, and then through the action of the linkage rod 14, the support plate 10 is retracted into the telescopic groove 12, thereby separating the support plate 10 from the connecting plate 903, thus enabling the lower mold 2 to completely separate from the upper mold 3, and finally the ejected annular magnetic core can be taken out.

[0043] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0044] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A ring-shaped magnetic core forming mold, comprising a base (1), characterized in that, Also includes: The lower mold (2) is mounted on the top of the base (1) and has a columnar groove inside. The upper mold (3) has an integrally formed pressure table (4) adapted to the columnar groove on its bottom surface; The core rod (5) moves vertically through the upper mold (3) and the pressure table (4), and the central axis of the core rod (5) coincides with the central axis of the columnar groove; the core rod (5), the pressure table (4) and the lower mold (2) cooperate with each other to form an annular magnetic core forming cavity (6); A slanted plate (7) is fixed to the upper end of the mandrel (5); Vertical limiting component (8), which is disposed on the top of the upper mold (3) to prevent the spherical plate (7) from vertically over-displaced; Ejection assembly (9), which is disposed between base (1) and lower mold (2), is used to eject the annular magnetic core in the annular magnetic core forming cavity (6); Two trays (10) are respectively set on the lower left and right sides of the U-shaped plate (7). Each tray (10) is telescopic. The tray (10) in the extended state is used to lift the ejector assembly (9).

2. The annular magnetic core forming mold according to claim 1, characterized in that: The vertical limiting component (8) includes limiting plates (801) fixed at intervals along the length direction of the slant plate (7) to the top of the upper mold (3), and each limiting plate (801) has a limiting hole (802) in the vertical direction for the slant plate (7) to pass through.

3. The annular magnetic core forming mold according to claim 1, characterized in that: The ejection assembly (9) includes an ejection platform (901) movably disposed in the columnar groove and located at the lower end of the annular magnetic core forming cavity (6). A number of connecting rods (902) are fixedly connected parallel to and spaced apart at the bottom of the ejection platform (901). Each connecting rod (902) moves vertically through the lower mold (2) and is fixedly connected at its lower end to a connecting plate (903). An elastic element (904) is connected between the connecting plate (903) and the base (1). The support plate (10) in the extended state is used to lift the connecting plate (903).

4. The annular magnetic core forming mold according to claim 3, characterized in that: The elastic element (904) consists of several ejector springs connected between the connecting plate (903) and the base (1), and each ejector spring applies an upward elastic force to the connecting plate (903).

5. The annular magnetic core forming mold according to claim 1, characterized in that: The lower end of the U-shaped plate (7) is fixedly connected to a fixing plate (11) corresponding to each of the support plates (10). A telescopic groove (12) for the support plate (10) to extend and retract is provided in each fixing plate (11). A return spring (13) is connected between the inner end of each support plate (10) and the corresponding fixing plate (11).

6. The annular magnetic core forming mold according to claim 5, characterized in that: A linkage rod (14) is fixedly connected to the top of the tray (10), and a strip hole (15) is provided on the top of the fixed plate (11) for the linkage rod (14) to move through. A linkage plate (16) that moves horizontally through the U-shaped plate (7) is fixedly connected to the upper end of the linkage rod (14). A first inclined structure is provided on the upper and lower sides of the linkage plate (16). A convex plate (17) corresponding to the linkage plate (16) is fixedly connected to the outer surface of the lower mold (2). A second inclined structure that is compatible with the first inclined structure is provided on the upper and lower sides of the convex plate (17).

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