Precise powder filling mechanism for inductor

Abstract

The utility model discloses an accurate powder filling mechanism for an inductor, which belongs to the technical field of powder filling mechanisms and comprises a working platform, a powder filling assembly, a hot pressing assembly, a middle mold body and a conveying assembly, the powder filling assembly comprises a T-shaped plate, a powder box and a middle mold plate, and the T-shaped plate is fixedly mounted at the top of the working platform through two pairs of supporting columns. The powder box is of a hollow structure with an opening in the bottom, the powder box is installed on the T-shaped plate in a horizontal sliding mode, and the bottom of the powder box is attached to the top of the T-shaped plate. According to the accurate powder filling mechanism for the inductor, the powder box is pushed to slide on the top of the T-shaped plate in a reciprocating mode, and when the powder box passes through the top of the middle mold plate, powder falls into the stamping groove from the opening in the bottom of the powder box and fills the stamping groove; when the powder box leaves the middle mold plate, redundant powder is taken away, one-time powder filling operation is completed, the powder filling amount is equal to the volume of the stamping groove, and the problems that most of existing inductor powder filling mechanisms are complex in structure and operation, the powder filling amount is prone to being controlled inaccurately, and the quality of finished inductors is poor are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of powder filling mechanisms, in particular to an inductor precision powder filling mechanism. Background Art

[0002] T-Core inductor is a manufacturing process used for ultra-thin and small-size one-piece molded inductors. With the rapid development of the information society, electronic products have been developing in the direction of "miniaturization, integration, multi-function, and high power". Traditional one-piece molded inductors can no longer meet the needs of downstream consumer electronics, automotive electronics, communication electronics and other industries, and the demand for ultra-thin and small-size one-piece molded inductors with smaller size, lower cost and excellent performance is gradually increasing.

[0003] The advantage of the T-Core process in making ultra-thin, small-sized, one-piece inductors is that the magnetic core can be hot-pressed first, and then the coil can be wound. This not only shortens the production process and saves costs, but also has better performance. It uses magnetic powder with ultra-high magnetic permeability formulated by itself, deeply integrates magnetic powder optimization with wire design, and achieves thin design while providing high-performance products as much as possible. However, most of the inductor powder filling mechanisms in the prior art use a quantitative powder filling method, where the hot-pressed powder in the powder box is filled into the powder filling plate through the upper cover by the vibration of the oscillator, and the powder filling plate is controlled to move forward by the cylinder to align the powder filling plate with the hole in the lower cover, and then the oscillator vibrates to fill the hot-pressed powder in the powder filling plate through the lower cover into the middle mold cavity, and then the middle mold is moved to the bottom of the stamping machine to stamp the powder and the magnetic core inside to obtain the finished inductor.

[0004] The solution is relatively complex in structure and operation. The density and fluidity of the powder material, the aperture and thickness of the powder filling plate, the powder filling time, and the working state of the oscillator can all affect the amount of powder filled, which can easily lead to inaccurate control of the amount of hot-pressed powder material, thereby affecting the quality of the hot-pressed inductor product. Utility Model Content

[0005] The utility model aims to provide an inductor precise powder filling mechanism, which can perform precise powder filling, improve the hot pressing efficiency and the quality of the hot pressed inductor.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] Provided is an inductor precision powder filling mechanism, comprising a working platform, a powder filling component, a hot pressing component, a middle mold body and a conveying component, wherein the powder filling component comprises a T-shaped plate, a powder box and a middle mold plate, wherein the T-shaped plate is fixedly mounted on the top of the working platform by two pairs of support columns, the powder box is a hollow structure with an opening at the bottom, the powder box can be horizontally slidably mounted on the T-shaped plate and the bottom of the powder box fits with the top of the T-shaped plate, the middle mold plate is detachably mounted in a square groove opened at the top of the T-shaped plate, the square groove passes through the T-shaped plate, a plurality of penetrating stamping grooves are opened on the top of the middle mold plate, the hot pressing component is used for stamping and forming the powder material, a plurality of mold cavities are opened on the top of the middle mold body, the mold cavities are used for carrying the inductor magnetic core and the powder material, and the conveying component is used for conveying the middle mold body to the bottom of the powder filling component so that the powder material falls into the mold cavity.

[0008] Furthermore, the powder filling assembly also includes a support frame, a slide rail, a slider, a rotating frame and a pair of first cylinders. The bottom of the support frame is fixedly connected to the top of the working platform, the slide rail can be vertically rotatably installed on the top of the support frame, the outer periphery of the slide rail is slidably connected to the slider, the top of the slider is rotatably connected to one end of the rotating frame, the other end of the rotating frame is rotatably connected to the powder box, the bottom of the first cylinder is rotatably connected to the support frame, and the telescopic end of the first cylinder is rotatably connected to the middle of the rotating frame.

[0009] Furthermore, the powder filling assembly also includes bolts and nuts, one end of the slide rail is rotatably connected to the top of the support frame through a rotating shaft, the bolt is slidably connected to the arc groove on the support frame, and one end of the bolt passes through the slide rail and is threadedly connected to the nut.

[0010] Furthermore, the hot pressing assembly includes two pairs of guide columns, an upper punch and a lower punch. The bottom of the guide column is fixedly connected to the top of the working platform. The upper punch and the lower punch are both slidably connected to the periphery of the guide column. The upper punch and the lower punch are respectively located at the top and bottom of the T-shaped plate. The stamping needles on the upper punch and the lower punch are plugged into and fit into the stamping grooves and fit each other.

[0011] Furthermore, the hot pressing assembly also includes a support plate and a pair of hydraulic rods. The four corners of the bottom of the support plate are respectively fixedly connected to the tops of two pairs of guide columns, the bottom of one hydraulic rod is fixedly connected to the top of the support plate, and the top of the other hydraulic rod is fixedly connected to the bottom of the working platform. The telescopic ends of the two hydraulic rods respectively pass through the support plate and the working platform and are fixedly connected to the top of the upper punch and the bottom of the lower punch.

[0012] Furthermore, the conveying assembly includes a pair of second cylinders and a U-shaped plate, the bottom of the second cylinder is fixedly connected to the top of the working platform, the telescopic end of the second cylinder is fixedly connected to the bottom of the U-shaped plate, the inner wall of the U-shaped plate is slidably connected to the bottom of the middle mold body, and a through empty groove is opened on the top of the U-shaped plate.

[0013] Furthermore, the conveying assembly also includes a pair of L-shaped limit blocks, the bottom of the L-shaped limit block is fixedly connected to the top of the U-shaped plate, the bottom of one side of the L-shaped limit block is in contact with the top of the middle mold body, and the protrusions on the L-shaped limit block and the top of the middle mold body are respectively plugged into the groove at the bottom of the T-shaped plate and the groove at the bottom of the middle mold plate.

[0014] The beneficial effects of the utility model: the utility model provides a powder box, a T-shaped plate and a middle template. When performing a powder filling operation, the opening at the bottom of the powder box is sealed by the T-shaped plate to prevent powder from spilling, and the powder box is pushed to make a reciprocating slide on the top of the T-shaped plate. When the powder box passes the top of the middle template, the powder falls into the stamping groove from the opening at the bottom of the powder box and fills it. Then the powder box leaves the middle template and takes away excess powder, thereby completing a powder filling operation. The powder filling amount is equal to the volume of the stamping groove, and the powder filling amount is controlled very accurately. The scheme has a simple structure, is easy to operate, and is conducive to promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for use in the embodiments of the present utility model. Obviously, the drawings described below are only some embodiments of the present utility model, and for ordinary technicians in this field, other drawings can also be obtained based on these drawings without creative work.

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the powder filling component structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the conveying component of the utility model;

[0019] Figure 4 It is a schematic diagram of the structure of the hot pressing component of the utility model.

[0020] In the figure:

[0021] 1. Working platform; 10. Middle mold body; 100. Mold cavity;

[0022] 2. powder filling assembly; 20. T-shaped plate; 21. powder box; 22. middle template; 220. punching groove; 23. support frame; 24. slide rail; 25. slider; 26. rotating frame; 27. first cylinder; 28. bolt; 29. ​​nut;

[0023] 3. Hot pressing assembly; 30. Guide column; 31. Upper punch; 32. Lower punch; 33. Support plate; 34. Hydraulic rod;

[0024] 4. Conveying assembly; 40. Second cylinder; 41. U-shaped plate; 410. Empty slot; 42. L-shaped limit block. DETAILED DESCRIPTION

[0025] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0026] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on this patent; in order to better illustrate the embodiments of the utility model, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0027] Reference Figures 1 to 4 The inductive precision powder filling mechanism shown includes a working platform 1, which is used to support the powder filling component 2 and the hot pressing component 3. It also includes the powder filling component 2, the hot pressing component 3, the middle mold body 10 and the conveying component 4. The powder filling component 2 includes a T-shaped plate 20, a powder box 21 and a middle mold plate 22. The T-shaped plate 20 is fixedly installed on the top of the working platform 1 through two pairs of support columns. The powder box 21 is a hollow structure with an opening at the bottom. The powder box 21 can also be fed through the feeding port opened at the top. The powder box 21 can be installed on the T-shaped plate 20 in a horizontally slidable manner and the bottom of the powder box 21 fits the top of the T-shaped plate 20. The opening at the bottom of the powder box 21 can be sealed by the T-shaped plate 20 to prevent the powder from spilling. The middle mold plate 22 is detachably installed in the square groove opened at the top of the T-shaped plate 20. The detachable installation of the middle mold plate 22 is achieved by screws, and the amount of filler can be controlled by only replacing the middle mold plate 22 of different models. The square groove runs through the T-shaped plate 20, and a plurality of punching grooves 220 are provided on the top of the middle template 22. The powder box 21 is pushed to make it slide back and forth on the top of the T-shaped plate 20. When the powder box 21 passes the top of the middle template 22, the powder falls into the punching groove 220 from the opening at the bottom of the powder box 21 and fills it. Then the powder box 21 leaves the middle template 22 and takes away the excess powder, thus completing a powder filling operation. The operation is simple and the powder filling amount is accurately controlled. The powder filling amount is equal to the volume of the punching groove 220. The hot pressing component 3 is used to stamp the powder material. A plurality of mold cavities 100 are provided on the top of the middle mold body 10. The mold cavity 100 is used to carry the inductor magnetic core and the powder material. The conveying component 4 is used to convey the middle mold body 10 to the bottom of the powder filling component 2 so that the powder material falls into the mold cavity 100.

[0028] The powder filling assembly 2 also includes a support frame 23, a slide rail 24, a slider 25, a rotating frame 26 and a pair of first cylinders 27. The bottom of the support frame 23 is fixedly connected to the top of the working platform 1, the slide rail 24 can be vertically rotatably installed on the top of the support frame 23, the outer periphery of the slide rail 24 is slidably connected to the slider 25, the top of the slider 25 is rotatably connected to one end of the rotating frame 26, the other end of the rotating frame 26 is rotatably connected to the powder box 21, the bottom of the first cylinder 27 is rotatably connected to the support frame 23, and the telescopic end of the first cylinder 27 is rotatably connected to the middle of the rotating frame 26. The slide rail 24 is adjusted to a suitable inclination angle so that the powder box 21 is always subjected to an inclined downward thrust during the movement, ensuring that the powder box 21 is closely fitted with the T-shaped plate 20 to prevent the powder from spilling, and then the first cylinder 27 is operated to drive the rotating frame 26 to rotate, and the slider 25 slides along the slide rail 24, thereby pushing the powder box 21 to slide on the top of the T-shaped plate 20 to fill the powder into the stamping groove 220.

[0029] The powder filling assembly 2 also includes a bolt 28 and a nut 29. One end of the slide rail 24 is rotatably connected to the top of the support frame 23 through a rotating shaft. The bolt 28 is slidably connected to the arc groove on the support frame 23. One end of the bolt 28 passes through the slide rail 24 and is threadedly connected to the nut 29. The slide rail 24 is rotated around the rotating shaft. At this time, the bolt 28 follows the slide rail 24 to slide along the arc groove. Then, the bolt 28 is rotated to be threadedly connected to the nut 29 and to conflict with the support frame 23. The slide rail 24 can be fixed at a suitable angle. By adjusting the angle of the slide rail 24, the rotating frame 26 can adapt to the spacing between the upper punch 31 and the lower punch 32 to avoid conflict.

[0030] The hot pressing assembly 3 includes two pairs of guide columns 30, an upper punch 31 and a lower punch 32. The bottom of the guide column 30 is fixedly connected to the top of the working platform 1. The upper punch 31 and the lower punch 32 are both slidably connected to the periphery of the guide column 30. The upper punch 31 and the lower punch 32 are respectively located at the top and bottom of the T-shaped plate 20. The punching needles on the upper punch 31 and the lower punch 32 are plugged and matched with the punching groove 220 and fit each other. Before filling the powder, the lower punch 32 is moved up, and the top of the punching needle on the lower punch 32 is inserted into the punching groove 220 to prevent the powder from spilling. After filling the powder, the upper punch 31 is moved down, and the bottom of the punching needle on the upper punch 31 is inserted into the punching groove 220, and the powder inside the punching groove 220 is hot-pressed with the middle template 22.

[0031] The hot pressing assembly 3 also includes a support plate 33 and a pair of hydraulic rods 34. The four corners of the bottom of the support plate 33 are fixedly connected to the tops of the two pairs of guide columns 30, one of the hydraulic rods 34 is fixedly connected to the top of the support plate 33, and the other hydraulic rod 34 is fixedly connected to the bottom of the working platform 1. The telescopic ends of the two hydraulic rods 34 pass through the support plate 33 and the working platform 1 respectively and are fixedly connected to the top of the upper punch 31 and the bottom of the lower punch 32. When the two hydraulic rods 34 work separately, the telescopic ends inside them drive the upper punch 31 and the lower punch 32 to move, thereby hot pressing the powder material.

[0032] The conveying assembly 4 includes a pair of second cylinders 40 and a U-shaped plate 41. The bottom of the second cylinder 40 is fixedly connected to the top of the working platform 1. The telescopic end of the second cylinder 40 is fixedly connected to the bottom of the U-shaped plate 41. The inner wall of the U-shaped plate 41 is slidably connected to the bottom of the middle mold body 10. A through-hole 410 is provided on the top of the U-shaped plate 41. The hole 410 is used to prevent the U-shaped plate 41 from hindering the movement of the lower punch 32. After the hot pressing is completed, the lower punch 32 is dropped, and then the middle mold body 10 is transported to the top of the U-shaped plate 41 by the conveyor belt. Then the second cylinder 40 is operated to push the U-shaped plate 41 upward, so that the top of the middle mold body 10 and the bottom of the middle mold plate 22 fit each other. At this time, the stamping groove 220 is connected to the die cavity 100. The hot-pressed powder material is pushed into the die cavity 100 through the upper punch 31, and the powder material and the inductor core are directly hot-pressed for a second time, so that the finished inductor can be directly obtained, and the step of moving the middle mold body 10 is omitted, which further improves the hot pressing efficiency.

[0033] The conveying assembly 4 also includes a pair of L-shaped limit blocks 42, the bottom of the L-shaped limit block 42 is fixedly connected to the top of the U-shaped plate 41, the bottom of one side of the L-shaped limit block 42 is in contact with the top of the middle mold body 10, and the L-shaped limit block 42 and the protrusions on the top of the middle mold body 10 are respectively plugged into the grooves at the bottom of the T-shaped plate 20 and the grooves at the bottom of the middle mold plate 22. After the middle mold body 10 is conveyed to the top of the U-shaped plate 41, its top and the L-shaped limit block 42 collide with each other to prevent the middle mold body 10 from shaking up and down. Then, when the second cylinder 40 pushes the U-shaped plate 41 upward, the L-shaped limit block 42 and the protrusions on the top of the middle mold body 10 are respectively inserted into the grooves at the bottom of the T-shaped plate 20 and the grooves at the bottom of the middle mold plate 22, thereby limiting the middle mold body 10 to prevent it from moving horizontally and ensuring that the stamping groove 220 can align with the mold cavity 100.

[0034] It should be noted that the above specific implementations are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art should understand that various modifications, equivalent substitutions, changes, etc. can be made to the present invention. However, as long as these changes do not deviate from the spirit of the present invention, they should be within the scope of protection of the present invention. In addition, some terms used in the specification and claims of this application are not restrictive, but are only for the convenience of description.

Claims

1. An inductor precision powder filling mechanism, comprising a working platform (1), characterized in that: The invention also comprises a powder filling component (2), a hot pressing component (3), a middle mold body (10) and a conveying component (4). The powder filling component (2) comprises a T-shaped plate (20), a powder box (21) and a middle mold plate (22). The T-shaped plate (20) is fixedly mounted on the top of the working platform (1) through two pairs of support columns. The powder box (21) is a hollow structure with an open bottom. The powder box (21) can be horizontally slidably mounted on the T-shaped plate (20) and the bottom of the powder box (21) is in contact with the top of the T-shaped plate (20). The middle mold plate (22) is provided with a plurality of support columns. ) is detachably mounted in a square groove opened at the top of the T-shaped plate (20), the square groove passes through the T-shaped plate (20), a plurality of penetrating stamping grooves (220) are opened at the top of the middle mold plate (22), a hot pressing component (3) is used for stamping and forming the powder material, a plurality of mold cavities (100) are opened at the top of the middle mold body (10), the mold cavities (100) are used for carrying the inductor core and the powder material, and the conveying component (4) is used for conveying the middle mold body (10) to the bottom of the powder filling component (2) so that the powder material falls into the mold cavities (100).

2. The inductor precise powder filling mechanism according to claim 1, characterized in that: The powder filling assembly (2) further comprises a support frame (23), a slide rail (24), a slider (25), a rotating frame (26) and a pair of first cylinders (27); the bottom of the support frame (23) is fixedly connected to the top of the working platform (1); the slide rail (24) is vertically rotatably installed on the top of the support frame (23); the outer periphery of the slide rail (24) is slidably connected to the slider (25); the top of the slider (25) is rotatably connected to one end of the rotating frame (26); the other end of the rotating frame (26) is rotatably connected to the powder box (21); the bottom of the first cylinder (27) is rotatably connected to the support frame (23); and the telescopic end of the first cylinder (27) is rotatably connected to the middle of the rotating frame (26).

3. The inductor precise powder filling mechanism according to claim 2, characterized in that: The powder filling assembly (2) also includes a bolt (28) and a nut (29); one end of the slide rail (24) is rotatably connected to the top of the support frame (23) via a rotating shaft; the bolt (28) is slidably connected to an arc groove on the support frame (23); one end of the bolt (28) passes through the slide rail (24) and is threadedly connected to the nut (29).

4. The inductor precise powder filling mechanism according to claim 1, characterized in that: The hot pressing assembly (3) comprises two pairs of guide columns (30), an upper punch (31) and a lower punch (32); the bottom of the guide column (30) is fixedly connected to the top of the working platform (1); the upper punch (31) and the lower punch (32) are both slidably connected to the periphery of the guide column (30); the upper punch (31) and the lower punch (32) are respectively located at the top and bottom of the T-shaped plate (20); and the punching pins on the upper punch (31) and the lower punch (32) are plugged into and fitted with the punching groove (220) and fit each other.

5. The inductor precise powder filling mechanism according to claim 4, characterized in that: The hot pressing assembly (3) also includes a support plate (33) and a pair of hydraulic rods (34); the four corners of the bottom of the support plate (33) are respectively fixedly connected to the tops of the two pairs of guide columns (30); the bottom of one hydraulic rod (34) is fixedly connected to the top of the support plate (33); the top of the other hydraulic rod (34) is fixedly connected to the bottom of the working platform (1); the telescopic ends of the two hydraulic rods (34) respectively pass through the support plate (33) and the working platform (1) and are fixedly connected to the top of the upper punch (31) and the bottom of the lower punch (32).

6. The inductor precise powder filling mechanism according to claim 1, characterized in that: The conveying assembly (4) comprises a pair of second cylinders (40) and a U-shaped plate (41); the bottom of the second cylinder (40) is fixedly connected to the top of the working platform (1); the telescopic end of the second cylinder (40) is fixedly connected to the bottom of the U-shaped plate (41); the inner wall of the U-shaped plate (41) is slidably connected to the bottom of the middle mold body (10); and a through-going empty groove (410) is provided at the top of the U-shaped plate (41).

7. The inductor precise powder filling mechanism according to claim 6, characterized in that: The conveying assembly (4) also includes a pair of L-shaped limit blocks (42), the bottom of the L-shaped limit blocks (42) is fixedly connected to the top of the U-shaped plate (41), the bottom of one side of the L-shaped limit blocks (42) is in contact with the top of the middle mold body (10), and the protrusions on the top of the L-shaped limit blocks (42) and the middle mold body (10) are respectively plugged into the grooves at the bottom of the T-shaped plate (20) and the grooves at the bottom of the middle mold plate (22).

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