Magnetic core pressing die capable of accurately aligning multiple cavities

Abstract

The utility model relates to the technical field of magnetic core production, in particular to a multi-cavity accurate alignment magnetic core pressing die which comprises a base, four supporting stand columns distributed in a matrix mode are evenly distributed on the top of the base, a circular fixing plate is jointly supported by the four supporting stand columns, and a plurality of middle dies distributed in an annular array mode are arranged on the top of the circular fixing plate. A push rod is arranged in the middle of the bottom of each bottom die, the bottom end of each push rod penetrates through the top of the circular fixing plate, and a first hydraulic cylinder is arranged in the middle of the top of the base. According to the magnetic core pressing die with the multiple cavities aligned accurately, when the movable rod of the second hydraulic cylinder stretches out, the multiple upper dies enter the multiple middle dies correspondingly to press soft magnet magnetic core powder filled in the middle dies, due to the fact that the multiple middle dies are arranged, pressing of the multiple soft magnet magnetic cores can be completed at the same time, and the pressing efficiency is improved. And the production efficiency of the soft magnet core is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of magnetic core production, in particular to a magnetic core pressing die with multiple cavities accurately aligned. Background Art

[0002] The soft magnetic core pressing mold is a professional tool used to produce soft magnetic cores. Soft magnetic cores refer to magnetic cores made of soft magnetic materials (such as pure iron or iron alloys, etc.). They play an important role in electromagnetic devices, such as transformers, inductors, motors and other devices for guiding and enhancing magnetic fields. This pressing mold is designed and manufactured very precisely to compress soft magnetic powder materials into magnetic cores of specific shapes and sizes. The pressing process involves filling the powdered soft magnetic material into the mold cavity and then applying high pressure to densify it. This process can be carried out at room temperature, called cold pressing; or under heating conditions, called hot pressing. The pressed magnetic core usually requires further heat treatment (such as annealing) to improve its magnetic properties.

[0003] The patent with publication number CN217740335U discloses a ferrite core powder pressing die, comprising a workbench, a bottom die is placed on the workbench, a symmetrically arranged hydraulic cylinder 1 is arranged on both sides of the workbench, a support plate is arranged at the output end of the hydraulic cylinder 1, a middle die matching with the bottom die is placed on the support plate, a hydraulic cylinder 2 is arranged above the middle die, and an upper die matching with the middle die and the bottom die is arranged at the output end of the hydraulic cylinder 2. The utility model has the advantages of: having a material unloading function, and the die is easy to replace.

[0004] During the specific use of the above-mentioned prior art, the worker controls the hydraulic cylinder 1 to contract, and the support plate moves downward to the workbench as the hydraulic cylinder 1 contracts, so that the bottom mold and the middle mold fit together. Then the worker places the ferrite core powder in the middle mold, and the worker controls the hydraulic cylinder 2 to extend. The extension of the hydraulic cylinder 2 drives the upper mold to move downward. The upper mold cooperates with the middle mold and the bottom mold to press the ferrite core powder into a ferrite core. Then the worker controls the hydraulic cylinder 1 to extend. The extension of the hydraulic cylinder 1 drives the support plate and the middle mold to move upward. The upper mold pushes the pressed ferrite core out of the middle mold. The hydraulic cylinder 2 is reset, and the worker removes the ferrite core. However, this operation can only complete the pressing of one ferrite core at a time, which is inefficient under the requirements of mass production. In view of this, we propose a core pressing mold with multi-cavity precise alignment. Utility Model Content

[0005] The utility model aims to provide a magnetic core pressing die with multiple cavities accurately aligned, so as to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A magnetic core pressing mold with multi-cavity precise alignment comprises a base, the top of the base is evenly distributed with four support columns arranged in a matrix, the four support columns jointly support a circular fixed plate, the top of the circular fixed plate is provided with a plurality of middle molds arranged in a ring array, the middle mold is fixedly connected to the top of the circular fixed plate, each of the middle molds is slidably connected with a bottom mold, the bottom mold can move up and down in the middle mold, when the soft magnetic core is pressed in the middle mold, the bottom mold moves upward to push the pressed soft magnetic core upward from the middle mold, and since a plurality of middle molds are provided, the pressing of a plurality of soft magnetic cores can be completed at the same time, effectively improving the production efficiency of the soft magnetic core;

[0008] A push rod is provided in the middle of the bottom of the bottom mold, and the bottom end of the push rod passes through the top of the circular fixed plate. A first hydraulic cylinder is provided in the middle of the top of the base. The first hydraulic cylinder is externally connected to a hydraulic drive system. The end of the movable rod of the first hydraulic cylinder is fixedly connected to a first disc. The top of the first disc is provided with a plurality of first connecting oblique rods arranged in a circular array. The top of each of the first connecting oblique rods is provided with a first connecting block. The bottom ends of the plurality of push rods are detachably connected to the plurality of first connecting blocks respectively. The first disc is driven up and down by the first hydraulic cylinder, and the first disc drives the plurality of first connecting oblique rods to move synchronously, so that the plurality of first connecting blocks respectively drive the plurality of push rods to move synchronously, and then the plurality of bottom molds respectively push out the soft magnet cores pressed in the plurality of middle molds.

[0009] A U-shaped bracket is provided on the top of the base, and a second hydraulic cylinder is provided in the middle of the top of the inner wall of the U-shaped bracket. The second hydraulic cylinder is externally connected to a hydraulic drive system. The end of the movable rod of the second hydraulic cylinder is fixedly connected to a second disc, and the bottom of the second disc is provided with a plurality of second connecting oblique rods arranged in a circular array. The bottom end of each of the second connecting oblique rods is provided with a second connecting block, and the bottom of each of the second connecting blocks is detachably connected to an upper mold. The second disc is driven up and down by the second hydraulic cylinder, and the second disc drives the plurality of second connecting oblique rods to move synchronously, so that the plurality of second connecting oblique rods respectively drive the plurality of upper molds to move synchronously. When the movable rod of the second hydraulic cylinder is extended, the plurality of upper molds respectively enter into the plurality of middle molds to press the soft magnet core powder filled in the middle mold.

[0010] Preferably, pre-installed holes are provided at the top of the base and near the four corners, and the pre-installed holes are for bolts to pass through, so that the base can be fixed to the ground by the bolts.

[0011] Preferably, a first thread groove is provided on the top of the supporting column, and the outer wall of the circular fixing plate is provided with four connecting plates arranged in a circular array, the bottoms of the four connecting plates are respectively fitted with the tops of the four supporting columns, and the circular fixing plate is connected to the supporting columns through the connecting plates.

[0012] Preferably, a mounting hole a is opened at the top of the connecting plate, and a first fastening bolt is connected to the mounting hole a. The threaded end of the first fastening bolt is threadedly connected to the first thread groove. The connecting plate is fixed to the top of the supporting column by the first fastening bolt, and it is convenient for the staff to disassemble and assemble the circular fixing plate.

[0013] Preferably, a second threaded groove is provided at the bottom end of the push rod, and a mounting hole b is provided at the bottom of the first connecting block. A second fastening bolt is connected to the mounting hole b, and the threaded end of the second fastening bolt is threadedly connected to the second threaded groove. The push rod is fixed to the top of the first connecting block by the second fastening bolt, which is convenient for the staff to disassemble and assemble the bottom mold, and the bottom mold can be replaced when it is damaged.

[0014] Preferably, the plurality of upper dies are respectively located directly above the plurality of middle dies, and when the movable rod of the second hydraulic cylinder is extended, the plurality of upper dies are respectively located in the plurality of middle dies.

[0015] Preferably, a connecting rod is provided in the middle of the top of the upper mold, and a third threaded groove is opened on the top of the connecting rod. A mounting hole c is opened on the top of the second connecting block, and a third fastening bolt is connected in the mounting hole c. The threaded end of the third fastening bolt is threadedly connected in the third threaded groove. The connecting rod is fixed to the bottom of the second connecting block by the third fastening bolt, which is convenient for the staff to disassemble and assemble the upper mold and can be replaced when the upper mold is damaged.

[0016] Preferably, a circular avoidance hole for a plurality of push rods to pass through is opened on the top of the circular fixing plate, and the inner diameter of the circular avoidance hole is larger than the diameter of the push rod to avoid wear between the push rod and the circular fixing plate.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] 1. The multi-cavity precisely aligned magnetic core pressing mold drives the second disc to move up and down through the second hydraulic cylinder, and the second disc drives multiple second connecting oblique rods to move synchronously, so that the multiple second connecting oblique rods respectively drive multiple upper molds to move synchronously. When the movable rod of the second hydraulic cylinder is extended, the multiple upper molds respectively enter the multiple middle molds to press the soft magnetic core powder filled in the middle molds. Since multiple middle molds are set, the pressing of multiple soft magnetic cores can be completed at the same time, effectively improving the production efficiency of soft magnetic cores.

[0019] 2. The multi-cavity precisely aligned magnetic core pressing mold, when the soft magnetic core is pressed in the middle mold, the first hydraulic cylinder drives the first disc to move up and down, and the first disc drives multiple first connecting oblique rods to move synchronously, so that the multiple first connecting blocks respectively drive multiple push rods to move synchronously, and then the multiple bottom molds respectively push out the multiple soft magnetic cores pressed in the middle mold, so that the staff can take out the multiple pressed soft magnetic cores.

[0020] 3. The multi-cavity precisely aligned magnetic core pressing mold fixes the connecting plate to the top of the supporting column by the first fastening bolt, and is convenient for the staff to disassemble and assemble the circular fixing plate. The push rod is fixed to the top of the first connecting block by the second fastening bolt, which is convenient for the staff to disassemble and assemble the bottom mold. When the bottom mold is damaged, it can be replaced. The connecting rod is fixed to the bottom of the second connecting block by the third fastening bolt, which is convenient for the staff to disassemble and assemble the upper mold. When the upper mold is damaged, it can be replaced. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall first state structure of the utility model;

[0022] Figure 2 It is a schematic diagram of the overall second state structure of the utility model;

[0023] Figure 3 It is one of the partial structural schematic diagrams of the utility model;

[0024] Figure 4 This is the second schematic diagram of the partial structure of the utility model;

[0025] Figure 5 This is the third partial structural schematic diagram of the utility model.

[0026] In the figure: 1. base; 10. U-shaped bracket; 2. supporting column; 20. first threaded groove; 3. circular fixing plate; 30. connecting plate; 300. mounting hole a; 31. middle mold; 32. circular avoidance hole; 4. first hydraulic cylinder; 5. first disc; 50. first connecting diagonal rod; 51. first connecting block; 510. mounting hole b; 6. bottom mold; 60. push rod; 600. second threaded groove; 7. second hydraulic cylinder; 8. second disc; 80. second connecting diagonal rod; 81. second connecting block; 810. mounting hole c; 9. upper mold; 90. connecting rod; 900. third threaded groove; 11. first fastening bolt; 12. second fastening bolt; 13. third fastening bolt. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0029] See also Figure 1-Figure 5 , the utility model provides a technical solution:

[0030] A magnetic core pressing mold with multi-cavity precise alignment comprises a base 1, four support columns 2 arranged in a matrix are evenly distributed on the top of the base 1, the four support columns 2 jointly support a circular fixed plate 3, a plurality of middle molds 31 arranged in a ring array are provided on the top of the circular fixed plate 3, the middle mold 31 is fixedly connected to the top of the circular fixed plate 3, a bottom mold 6 is slidably connected in each middle mold 31, and the bottom mold 6 can move up and down in the middle mold 31, when the soft magnetic core is pressed in the middle mold 31, the bottom mold 6 moves upward to push the pressed soft magnetic core upward from the middle mold 31, and since a plurality of middle molds 31 are provided, the pressing of a plurality of soft magnetic cores can be completed at the same time, thereby effectively improving the production efficiency of the soft magnetic core;

[0031] A push rod 60 is provided in the middle of the bottom of the bottom mold 6, and the bottom end of the push rod 60 passes through the top of the circular fixed plate 3. A first hydraulic cylinder 4 is provided in the middle of the top of the base 1. The first hydraulic cylinder 4 is externally connected to a hydraulic drive system. The end of the movable rod of the first hydraulic cylinder 4 is fixedly connected to a first disc 5. A plurality of first connecting oblique rods 50 arranged in a circular array are provided on the top of the first disc 5. A first connecting block 51 is provided on the top of each first connecting oblique rod 50. The bottom ends of the plurality of push rods 60 are detachably connected to the plurality of first connecting blocks 51 respectively. The first disc 5 is driven up and down by the first hydraulic cylinder 4, and the first disc 5 drives the plurality of first connecting oblique rods 50 to move synchronously, so that the plurality of first connecting blocks 51 respectively drive the plurality of push rods 60 to move synchronously, and then the plurality of bottom molds 6 respectively push out the plurality of soft magnet cores pressed in the middle mold 31.

[0032] A U-shaped bracket 10 is provided on the top of the base 1, and a second hydraulic cylinder 7 is provided in the middle of the top of the inner wall of the U-shaped bracket 10. The second hydraulic cylinder 7 is externally connected to a hydraulic drive system. The end of the movable rod of the second hydraulic cylinder 7 is fixedly connected to a second disc 8. The bottom of the second disc 8 is provided with a plurality of second connecting oblique rods 80 arranged in a circular array. The bottom end of each second connecting oblique rod 80 is provided with a second connecting block 81. The bottom of each second connecting block 81 is detachably connected to an upper mold 9. The second disc 8 is driven up and down by the second hydraulic cylinder 7, and the second disc 8 drives the plurality of second connecting oblique rods 80 to move synchronously, so that the plurality of second connecting oblique rods 80 respectively drive the plurality of upper molds 9 to move synchronously. When the movable rod of the second hydraulic cylinder 7 is extended, the plurality of upper molds 9 respectively enter into the plurality of middle molds 31 to press the soft magnet core powder filled in the middle mold 31.

[0033] In this embodiment, pre-installed holes are provided at the top of the base 1 and near the four corners, and the pre-installed holes are for bolts to pass through, so that the base 1 can be fixed to the ground by the bolts.

[0034] Specifically, a first thread groove 20 is provided on the top of the supporting column 2, and the outer wall of the circular fixing plate 3 is provided with four connecting plates 30 arranged in a circular array, and the bottoms of the four connecting plates 30 are respectively fitted with the tops of the four supporting columns 2, and the circular fixing plate 3 is connected to the supporting column 2 through the connecting plates 30.

[0035] Furthermore, a mounting hole a300 is opened at the top of the connecting plate 30, and a first fastening bolt 11 is connected in the mounting hole a300. The threaded end of the first fastening bolt 11 is threadedly connected in the first thread groove 20. The connecting plate 30 is fixed to the top of the supporting column 2 by the first fastening bolt 11, and it is convenient for the staff to disassemble and assemble the circular fixing plate 3.

[0036] Furthermore, a second threaded groove 600 is provided at the bottom end of the push rod 60, and a mounting hole b510 is provided at the bottom of the first connecting block 51. A second fastening bolt 12 is connected to the mounting hole b510, and the threaded end of the second fastening bolt 12 is threadedly connected to the second threaded groove 600. The push rod 60 is fixed to the top of the first connecting block 51 by the second fastening bolt 12, which is convenient for the staff to disassemble and assemble the bottom mold 6, and the bottom mold 6 can be replaced when it is damaged.

[0037] Furthermore, the plurality of upper dies 9 are respectively located directly above the plurality of middle dies 31 , and when the movable rod of the second hydraulic cylinder 7 is extended, the plurality of upper dies 9 are respectively located in the plurality of middle dies 31 .

[0038] Furthermore, a connecting rod 90 is provided in the middle of the top of the upper mold 9, and a third threaded groove 900 is opened on the top of the connecting rod 90. A mounting hole c810 is opened on the top of the second connecting block 81. A third fastening bolt 13 is connected in the mounting hole c810. The threaded end of the third fastening bolt 13 is threadedly connected in the third threaded groove 900. The connecting rod 90 is fixed to the bottom of the second connecting block 81 by the third fastening bolt 13, which is convenient for the staff to disassemble and assemble the upper mold 9 and can be replaced when the upper mold 9 is damaged.

[0039] Furthermore, a circular avoidance hole 32 for a plurality of push rods 60 to pass through is opened on the top of the circular fixing plate 3 , and the inner diameter of the circular avoidance hole 32 is larger than the diameter of the push rod 60 to avoid wear between the push rod 60 and the circular fixing plate 3 .

[0040] When the multi-cavity precisely aligned magnetic core pressing mold of this embodiment is in use, the staff places the four connecting plates 30 on the top of the four supporting columns 2 respectively, and aligns the mounting hole a300 with the first thread groove 20, and then uses the first fastening bolt 11 to fix the connecting plate 30 on the top of the supporting column 2, thereby realizing the installation of the circular fixing plate 3, and then the staff places the multiple bottom molds 6 into the multiple middle molds 31 respectively, so that the push rod 60 passes through the circular avoidance hole 32, and then uses the second fastening bolt 12 to fix the bottom of the push rod 60 to the top of the first connecting block 51, and then uses the third fastening bolt 13 to fix the top of the connecting rod 90 to the bottom of the second connecting block 81, thereby realizing the installation of the multi-cavity precisely aligned magnetic core pressing mold, after which the staff pours the soft magnetic magnet core powder into the multiple middle molds 31 in a quantitative manner, and then starts the second hydraulic cylinder 7 to work, the movable rod of the second hydraulic cylinder 7 extends, and the second disc 8 drives the multiple second connecting oblique rods 8 0 moves downward synchronously, so that the multiple second connecting oblique rods 80 respectively drive the multiple upper molds 9 to move downward synchronously, and the multiple upper molds 9 respectively enter the multiple middle molds 31 to press the soft magnetic core powder filled in the middle mold 31. After the soft magnetic core powder is pressed and formed, the movable rod of the second hydraulic cylinder 7 contracts, so that the multiple upper molds 9 are respectively moved out of the multiple middle molds 31, and then the staff starts the first hydraulic cylinder 4 to work, and the movable rod of the first hydraulic cylinder 4 extends, and the first disc 5 drives the multiple first connecting oblique rods 50 to move upward synchronously, so that the multiple first connecting blocks 51 respectively drive the multiple push rods 60 to move upward synchronously, and then the multiple bottom molds 6 respectively push out the soft magnetic cores pressed in the multiple middle molds 31, so that the staff can take out the pressed soft magnetic cores. Since multiple middle molds 31 are provided, multiple molding cavities are formed in cooperation with the bottom mold 6 and the upper mold 9, and the pressing of multiple soft magnetic cores can be completed at the same time, effectively improving the production efficiency of the soft magnetic cores.

[0041] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A multi-cavity precisely aligned magnetic core pressing die, comprising a base (1), characterized in that: The top of the base (1) is evenly distributed with four support columns (2) arranged in a matrix, and the four support columns (2) jointly support a circular fixed plate (3). The top of the circular fixed plate (3) is provided with a plurality of middle molds (31) arranged in a ring array, and each of the middle molds (31) is slidably connected with a bottom mold (6). A push rod (60) is provided in the middle of the bottom of the bottom mold (6), and the bottom end of the push rod (60) passes through the top of the circular fixed plate (3). A first hydraulic cylinder (4) is provided in the middle of the top of the base (1), and the end of the movable rod of the first hydraulic cylinder (4) is fixedly connected with a first disc (5), and the top of the first disc (5) is provided with a plurality of first connecting inclined rods ( 50), the top end of each of the first connecting oblique rods (50) is provided with a first connecting block (51), the bottom ends of the plurality of push rods (60) are respectively detachably connected to the plurality of first connecting blocks (51), the top of the base (1) is provided with a U-shaped bracket (10), the middle part of the top of the inner wall of the U-shaped bracket (10) is provided with a second hydraulic cylinder (7), the end of the movable rod of the second hydraulic cylinder (7) is fixedly connected with a second disc (8), the bottom of the second disc (8) is provided with a plurality of second connecting oblique rods (80) arranged in a circular array, the bottom end of each of the second connecting oblique rods (80) is provided with a second connecting block (81), and the bottom of each of the second connecting blocks (81) is detachably connected with an upper mold (9).

2. The multi-cavity precisely aligned magnetic core pressing die according to claim 1, characterized in that: Pre-installation holes are provided at the top of the base (1) and near the four corners.

3. The multi-cavity precisely aligned magnetic core pressing die according to claim 1, characterized in that: The top of the supporting column (2) is provided with a first thread groove (20), and the outer wall of the circular fixing plate (3) is provided with four connecting plates (30) arranged in a circular array, and the bottoms of the four connecting plates (30) are respectively fitted with the tops of the four supporting columns (2).

4. The multi-cavity precisely aligned magnetic core pressing die according to claim 3, characterized in that: A mounting hole a (300) is provided at the top of the connecting plate (30), a first fastening bolt (11) is connected in the mounting hole a (300), and a threaded end of the first fastening bolt (11) is threadedly connected in the first thread groove (20).

5. The multi-cavity precisely aligned magnetic core pressing die according to claim 1, characterized in that: A second threaded groove (600) is provided at the bottom end of the push rod (60), a mounting hole b (510) is provided at the bottom of the first connecting block (51), a second fastening bolt (12) is connected in the mounting hole b (510), and a threaded end of the second fastening bolt (12) is threadedly connected in the second threaded groove (600).

6. The multi-cavity precisely aligned magnetic core pressing die according to claim 1, characterized in that: The plurality of upper dies (9) are respectively located directly above the plurality of middle dies (31); when the movable rod of the second hydraulic cylinder (7) is extended, the plurality of upper dies (9) are respectively located within the plurality of middle dies (31).

7. The multi-cavity precisely aligned magnetic core pressing die according to claim 1, characterized in that: A connecting rod (90) is provided in the middle of the top of the upper mold (9), and a third threaded groove (900) is provided on the top of the connecting rod (90). A mounting hole c (810) is provided on the top of the second connecting block (81), and a third fastening bolt (13) is connected in the mounting hole c (810), and the threaded end of the third fastening bolt (13) is threadedly connected in the third threaded groove (900).

8. The multi-cavity precisely aligned magnetic core pressing die according to claim 1, characterized in that: A circular avoidance hole (32) is provided on the top of the circular fixing plate (3) for a plurality of push rods (60) to pass through, and the inner diameter of the circular avoidance hole (32) is greater than the diameter of the push rod (60).

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