Automatic powder feeding device for micro inductor processing and tablet press

Abstract

The application relates to the field of electronic component processing, in particular to an automatic powder feeding device for micro inductor processing and a tablet press, which comprises a supporting plate, a feeding mechanism and a feeding mechanism, the supporting plate is used for detachable connection to a tablet press body, the supporting plate is provided with a through hole, and a feeding mechanism and a feeding mechanism are arranged at the top and the bottom of the through hole respectively, the feeding mechanism is arranged on one side of the tablet press and used for connecting a discharging hopper of the tablet press, the feeding mechanism comprises a powder box, a feeding plate and a feeding driving element, the feeding plate is arranged at the bottom of the supporting plate, the lower surface of the powder box is tightly attached to the upper surface of the feeding plate, and the feeding driving element drives the powder box to slide above a mold of the tablet press. The structure can improve the uniformity and accuracy of the powder feeding amount, improve the universality of the automatic powder feeding device, the device structure is simple, the automatic powder feeding device can be adapted to tablet presses of different models, and therefore the production efficiency and quality of the micro inductor are improved.

Description

Technical Field

[0001] This application relates to the field of electronic component processing, and in particular to an automatic powder feeding device and tablet press for processing micro inductors. Background Technology

[0002] In the field of electronic component manufacturing, technological advancements have been rapid in recent years, with the emergence of various electronic devices such as smartphones, tablets, and smart wearable devices, all continuously moving towards miniaturization and high performance. This has led to a surge in market demand for miniature inductors, including power inductors, magnetically wound inductors, and fully magnetically shielded precision wire-wound inductors. As an indispensable key component of electronic devices, the manufacturing quality and efficiency of miniature inductors directly affect the performance and stability of these devices. High-quality miniature inductors can improve the operating speed of electronic devices, reduce energy consumption, and provide users with a better experience. With the accelerated pace of electronic product upgrades, the market has placed more stringent standards on the output and quality of miniature inductors, prompting manufacturers to continuously explore more efficient and precise production methods. Advances in manufacturing technology are also driving the continuous development of the electronics industry. In existing miniature inductor manufacturing technologies, the crucial step of pressing raw material powder into the shape of miniature inductors is typically accomplished using a tablet press. Different brands and models of tablet presses vary in size due to differences in design concepts and production processes. Regarding the feeding issue, existing tablet presses typically employ two methods. One method relies primarily on manual operation in small-scale tablet production, where workers manually scoop powder into the tablet press mold one spoonful at a time. Another method involves adding a powder feeding device. This device includes a feeding plate mounted on one side of the female mold, with guide rails on both sides. A powder box, driven by a pusher cylinder, is mounted on the guide rails. The powder box is connected to the tablet press's hopper via a flexible hose. The pusher cylinder moves the powder box forward, pressing it against the mold surface above the female mold to a designated position, allowing the powder to automatically fall into the mold. However, existing feeding methods have significant drawbacks. Manual operation is slow, leading to low production efficiency. Furthermore, workers cannot guarantee the uniformity and accuracy of powder feeding, resulting in inconsistent product quality and failing to meet the demands of large-scale production. The existing powder feeding devices cannot be well adapted to different models of tablet presses. In particular, for some tablet presses where the space between the mold and the die is narrow and the volume is large, resulting in the distance between the powder pressing position and the feed port, the flexible tube above the powder box that connects to the tablet press hopper cannot enter between the tablet press and the die. The powder feeding operation is difficult and can only rely on manual feeding, which seriously affects the production efficiency and quality of micro inductors. Utility Model Content

[0003] To improve the uniformity and accuracy of powder feeding, and to enhance the versatility of the automatic powder feeding device, this application provides an automatic powder feeding device and a tablet press for micro inductor processing. The device has a simple structure and can be adapted to different models of tablet presses, thereby improving the production efficiency and quality of micro inductors.

[0004] Firstly, the device includes a support plate, a feeding mechanism, and a conveying mechanism. The support plate is detachably connected to the tablet press body. The support plate has a through hole, and the feeding mechanism and conveying mechanism are respectively located at the top and bottom of the through hole. The feeding mechanism is located on one side of the tablet press and connects to the tablet press hopper. The conveying mechanism includes a powder box, a conveying plate, and a conveying drive. The conveying plate is located at the bottom of the support plate, and the lower surface of the powder box is in close contact with the upper surface of the conveying plate. The conveying drive drives the powder box to slide above the tablet press mold. By adopting the above technical solution, the support plate is detachably connected to the tablet press body, allowing the automatic powder feeding device to be flexibly installed on different models of tablet presses. Because the support plate has a through hole, and the feeding mechanism and conveying mechanism are located at the top and bottom of the through hole, and the feeding mechanism can connect to the tablet press hopper, the powder in the tablet press hopper can smoothly pass through the feeding mechanism into the through hole using only its own weight. The feeding mechanism includes a feeding plate located at the bottom of the support plate, with the lower surface of the powder box closely attached to the upper surface of the feeding plate. A feeding drive unit drives the powder box to slide, accurately conveying the powder falling through the through-hole to the top of the tablet press mold. Even in tablet presses where the space between the mold and the die is narrow, or the volume is large, resulting in a distance between the powder pressing position and the feed inlet, the automatic powder feeding device can still deliver the powder to the tablet press mold, thereby improving the production efficiency and product quality of micro inductors and meeting the needs of large-scale production. Preferably, the feeding mechanism includes a connecting member and a cover. The cover is located on the upper surface of the support plate and communicates with the through-hole. The tablet press hopper is connected to the cover through the connecting member for discharging material into the through-hole within the cover. By adopting the above technical solution, the feeding mechanism includes a connecting component and a cover. The cover is located on the upper surface of the support plate and communicates with the through hole. The tablet press hopper is connected to the cover through the connecting component. In this way, the powder in the tablet press hopper can flow smoothly into the cover through the connecting component, and then further flow to the subsequent feeding mechanism through the through hole communicating with the cover. This structure uses the connecting component to establish a connection channel between the hopper and the cover. The cover collects the powder flowing out of the hopper and achieves concentrated falling of the powder through the connection with the through hole, avoiding the powder from scattering and causing waste and pollution during the conveying process. At the same time, the cover plays a role in gathering and buffering the powder, reducing the impact force when the powder falls, preventing the powder from dispersing, and allowing it to enter the through hole more evenly. This improves the stability and uniformity of the feeding, and ultimately helps to improve the quality and efficiency of powder supply in the production process of micro inductors. Preferably, the feeding mechanism further includes a pusher plate and a pusher drive, the lower surface of the pusher plate is in close contact with the upper surface of the support plate, the cover is provided with a gap for the pusher plate to pass through, and the pusher drive drives the pusher plate to pass through the gap, pushing the material in the cover to the through hole.By adopting the above technical solution, the feeding mechanism is equipped with a pusher plate and a pusher drive. The lower surface of the pusher plate is in close contact with the upper surface of the support plate, and the cover has a gap for the pusher plate to pass through. When the pusher drive is activated, it drives the pusher plate to pass through the gap. Since the cover stores powder entering from the tablet press hopper through the connecting piece and the cover, the pusher plate can effectively push the powder in the cover to the through hole of the support plate during movement. This avoids the accumulation of powder in the cover, allowing the powder to enter the powder box of the feeding mechanism more smoothly and evenly, thereby improving the efficiency and uniformity of powder feeding to the tablet press mold. This is beneficial to improving the production quality and stability of micro inductors. In addition, this structure is particularly suitable for large tablet presses where the hopper is far from the mold. The powder first falls into the cover by gravity, and then the pusher plate pushes the powder to the side closer to the mold, resulting in a more reasonable layout. Preferably, the connecting piece is rotatably mounted on the support plate. By adopting the above technical solution, since the connecting member is rotatably mounted on the support plate, when facing tablet presses of different models and sizes, if the position or angle of the tablet press hopper is not conducive to connecting with the feeding mechanism, the connecting member can be rotated to adjust it to a suitable angle and position, thus smoothly connecting with the tablet press hopper. This solves the connection problem caused by the special position of the tablet press hopper, avoids the problem of powder feeding difficulties caused by inconvenient connection, effectively improves the adaptability of the automatic powder feeding device to different models of tablet presses, makes powder feeding operation more convenient and efficient, and helps to improve the production efficiency and quality of micro inductors. Preferably, the cover has a downward-facing "U"-shaped structure, and the inner wall of the cover is in contact with the surface of the pusher plate. By adopting the above technical solution, the cover has a downward-facing "U"-shaped structure and the inner wall is in contact with the surface of the pusher plate. When the pusher plate pushes the material under the drive of the pusher drive, the "U"-shaped structure can better wrap the material, making the material less likely to scatter. Meanwhile, the contact between the inner wall of the cover and the surface of the pusher plate reduces the gap between them, preventing material from overflowing and ensuring that the material can be effectively pushed from the cover to the through hole. This improves feeding efficiency and ensures the accuracy of each feeding amount, thereby contributing to the improvement of the production quality and efficiency of micro inductors. Preferably, guide plates are provided on both sides of the feeding plate, and the two sides of the powder box abut against the two guide plates respectively to guide the powder box to slide above the mold of the tablet press. By adopting the above technical solution, with guide plates on both sides of the feeding plate, when the feeding drive drives the powder box to slide, the two sides of the powder box abut against the two guide plates respectively. The guide plates constrain and guide the powder box, preventing the powder box from deviating or shaking during sliding. This allows the powder box to slide accurately above the mold of the tablet press along a predetermined path, improving the accuracy of the powder box feeding position and ensuring that the powder falls accurately into the mold, which is beneficial to ensuring the production quality and efficiency of micro inductors.Preferably, both guide plates extend beyond the side of the feeding plate away from the feeding drive component and abut against the mold surface of the tablet press. By adopting the above technical solution, with both guide plates extending beyond the side of the feeding plate away from the feeding drive component and abutting against the mold surface of the tablet press, the powder box is better guided to the top of the mold when the feeding drive component drives the powder box to slide. The extended guide plates further define the sliding path of the powder box, reducing the possibility of deviation during sliding and improving the accuracy of powder feeding. Furthermore, the guide plates abutting against the mold surface prevents powder from spilling outside the mold during the process of falling from the powder box into the mold, maintaining a clean working environment for the tablet press. It also ensures a more stable and accurate amount of powder falling into the mold each time, which is beneficial for improving the production quality and efficiency of micro inductors. Preferably, a height adjustment component is provided at the top of the feeding plate for adjusting the installation height of the feeding plate. By adopting the above technical solution, a height adjustment component is provided on the top of the feeding plate. Since different brands and models of tablet presses differ in design concepts and production processes, their dimensions vary. When facing tablet presses of different sizes, the height adjustment component can flexibly adjust the installation height of the feeding plate, allowing the lower surface of the powder box to better adhere to the upper surface of the feeding plate. This ensures stable sliding of the powder box during feeding, prevents powder spillage, improves the accuracy and stability of powder feeding, and thus enhances the production quality and efficiency of micro inductors. Simultaneously, this height adjustment function allows the automatic powder feeding device to better adapt to different models of tablet presses, enhancing the device's versatility and applicability, and expanding its application range. Preferably, the powder box includes a box body and a guide plate. The bottom of the box body has a discharge port, and the guide plate is inclined within the box body, tilting downwards towards the discharge port. By adopting the above technical solution, the powder box is equipped with a guide plate inclined towards the discharge port. When the powder enters the box, due to the inclined design of the guide plate, the powder will slide and gather along the guide plate towards the discharge port under its own gravity, avoiding powder accumulation or residue in the box. This allows the powder to be discharged smoothly and quickly from the discharge port, improving the smoothness and efficiency of powder feeding, and thus helping to improve the overall production efficiency of micro inductor processing. Simultaneously, this design makes the powder discharge more uniform, which helps to ensure the consistency of the amount of powder fed into the tablet press mold each time, thereby improving the stability of the micro inductor product quality. Secondly, a tablet press includes the aforementioned automatic powder feeding device, and the tablet press's worktable is equipped with a mold adapted to the automatic powder feeding device. By adopting the above technical solution, the tablet press is equipped with the aforementioned automatic powder feeding device, and the worktable is equipped with a mold adapted to it.First, the support plate of the automatic powder feeding device is detachably connected to the tablet press body, facilitating device replacement or adjustment according to different needs. The feeding mechanism, located on one side of the tablet press and connected to the hopper, works in conjunction with the feeding mechanism, avoiding the problems of low efficiency and uneven powder feeding caused by manual feeding, thus improving powder feeding efficiency and uniformity, and consequently enhancing product quality. The feeding drive component in the feeding mechanism drives the powder box to slide above the mold, ensuring accurate feeding.

[0005] In summary, this application includes at least one of the following beneficial technical effects:

[0006] 1. The automatic powder feeding device has a support plate, a feeding mechanism and a feeding mechanism. The support plate is provided with through holes. The feeding mechanism is connected to the hopper of the tablet press to obtain powder. The powder falls into the feeding mechanism through the through holes on the support plate. The feeding mechanism drives the powder box to slide above the tablet press mold to realize powder feeding. The entire powder feeding process is completed automatically, avoiding the problem that the powder box cannot reach the top of the mold due to the limited space of the tablet press.

[0007] 2. Equipped with a pusher plate and a pusher drive, even if the tablet press is very large, the powder can be pushed to the vicinity of the mold by the pusher plate, and then the powder box can be driven by the feeding mechanism to slide to the top of the tablet press mold in a limited space.

[0008] 3. A guide plate is installed to guide the movement of the powder box, reducing the possibility of the powder box deviating during the sliding process and improving the accuracy of powder feeding. Attached Figure Description

[0009] Figure 1 This is a structural diagram of an automatic powder feeding device for processing micro inductors, as described in Example 1.

[0010] Figure 2 This is a side view of an automatic powder feeding device for processing micro inductors, as described in Embodiment 1.

[0011] Explanation of reference numerals in the attached drawings: 1. Support plate; 2. Feeding mechanism; 3. Feeding mechanism; 11. Through hole; 21. Connecting component; 22. Cover; 23. Pusher plate; 24. Pusher drive component; 221. Gap; 31. Powder box; 32. Feeding plate; 33. Feeding drive component; 311. Box body; 312. Guide plate; 313. Discharge port; 314. Capacitive sensor; 321. Guide plate; 322. Height adjustment component. Detailed Implementation

[0012] The following is in conjunction with the appendix Figure 1-2 This application will be described in further detail.

[0013] This application provides an automatic powder feeding device for processing miniature inductors, referring to... Figure 1 and Figure 2The system includes a support plate 1, a feeding mechanism 2, and a feeding mechanism 3. The support plate 1 has a through hole 11. The feeding mechanism 2 is located above the support plate 1 and connected to the hopper of the tablet press. The feeding mechanism 3 is located below the support plate 1. Powder falls from the hopper of the tablet press into the feeding mechanism 2 under its own weight, then passes through the through hole 11 of the support plate 1 and falls into the feeding mechanism 3. The feeding mechanism 3 conveys the powder to the tablet press mold. In this embodiment, the bottom of the support plate 1 is detachably connected to the tablet press body via a support column. The support plate 1 is made of a high-strength metal material, such as stainless steel or aluminum alloy, and is designed as a rectangular flat plate. The detachable connection to the tablet press body is achieved using bolts. The feeding mechanism 2 is installed at the top corresponding to the through hole 11, and the feeding mechanism 3 is installed at the bottom. Specifically, in this embodiment, the feeding mechanism 2 is located on one side of the tablet press. The feeding mechanism 2 includes a connecting member 21, a cover 22, a pusher plate 23, and a pusher drive member 24. The cover 22 is designed as a U-shaped structure with the opening facing downwards. The cover 22 is installed on the upper surface of the support plate 1 with the opening facing downwards, and its opening is in communication with the through hole 11. A rectangular receiving cavity for receiving powder is formed between the cover 22 and the support plate 1. The tablet press hopper is connected to the cover 22 through the connecting member 21, thereby realizing the feeding of powder into the through hole 11 in the cover 22. The connecting member 21 is a pipe joint, which is rotatably set on the upper surface of the cover 22. Specifically, a bearing seat is set on the support plate 1, and the connecting member 21 is connected to the bearing seat through the bearing, thus realizing the rotatable function of the connecting member 21. In terms of material, plastic can be used. In this embodiment, the pipe joint is integrally formed from a hollow semi-cylindrical structure and a tubular structure. The tubular structure is connected to the tablet press hopper through a flexible hose. In particular, the cover 22 of this embodiment is made of transparent plastic in one piece, so that the through hole 11 of the support plate 1 can be seen through the cover 22, making it easy to observe the situation of powder falling from the through hole 11.

[0014] The lower surface of the pusher plate 23 is tightly fitted to the upper surface of the support plate 1. The "U"-shaped cover 22 has gaps 221 on both sides for the pusher plate 23 to pass through. These gaps 221 communicate with the receiving cavity, and the pusher drive 24 can drive the pusher plate 23 through these gaps 221, pushing the powder in the receiving cavity of the cover 22 to the through hole 11 of the support plate 1. The pusher plate 23 is generally made of hard plastic or metal and is rectangular flat. The pusher drive 24 uses a cylinder or an electric push rod. Cylinders have the advantage of fast response speed, while electric push rods have the characteristic of high control precision. In this embodiment, an electric push rod is preferred. Under the driving action of the pusher drive 24, the pusher plate 23 will move linearly within the gaps 221 of the cover 22, thereby accurately pushing the powder in the cover 22 to the through hole 11. Specifically, in this embodiment, the through hole 11 is an elongated through hole 11, the size of which matches the size of the gap 221 of the cover 22. Specifically, the feeding mechanism 3 in this embodiment includes a powder box 31, a feeding plate 32, and a feeding drive 33. The feeding plate 32 is installed at the bottom of the support plate 1 and is arranged parallel to the support plate 1. The feeding drive 33 is installed between the feeding plate 32 and the support plate 1. The output end of the feeding drive 33 is connected to the powder box 31. The powder box 31 has a rectangular box-shaped structure. The lower surface of the powder box 31 is tightly attached to the upper surface of the feeding plate 32. The feeding drive 33 can drive the powder box 31 to slide along the feeding plate 32 to the top of the tablet press mold.

[0015] The powder box 31 includes a box body 311 and a guide plate 312. The box body 311 has a discharge port 313 at its bottom. The guide plate 312 is installed at an angle inside the box body 311, tilting downwards towards the discharge port 313. The box body 311 is generally made of plastic or metal. The function of the guide plate 312 is to guide the powder towards the discharge port 313, ensuring that the powder can be smoothly discharged from the discharge port 313. The tilt angle of the guide plate 312 is generally between 30° and 60°, and the specific angle can be flexibly adjusted according to the characteristics of the powder and actual production needs. Specifically, a capacitive sensor 314 is provided on one side of the box body 311. The sensing end of the capacitive sensor 314 passes through the side wall of the box body 311 into the box body 311 and is located above the guide plate 312. When the powder in the box body 311 completely covers the sensing end of the capacitive sensor 314, that is, the amount of powder fed in a single delivery has reached the standard, the capacitive sensor 314 feeds this signal back to the control system of the control device. The control system then controls the feeding drive 33 to drive the feeding plate 32 to move the powder box 31. In this embodiment, the control system is set in the tablet press and controls the feeding drive 33 and the pushing drive 24 to supply driving force to the relevant components.

[0016] In this embodiment, the feeding plate 32 abuts against one side of the tablet press mold, and the upper surface of the feeding plate 32 is flush with the upper surface of the tablet press mold. This structural arrangement allows the powder to start from the tablet press hopper, enter the through hole 11 through the feeding mechanism 2, and then reach the powder box 31. Finally, as the powder box 31 moves along the upper surface of the tablet press mold to the designated position, the powder falls accurately from the discharge port 313 into the membrane hole of the tablet press mold, greatly improving the efficiency and accuracy of powder feeding and meeting the needs of large-scale production.

[0017] Furthermore, guide plates 321 are installed on both sides of the feeding plate 32. The powder box 31 is tightly abutted against the two guide plates 321 on both sides, and both guide plates 321 extend beyond the side of the feeding plate 32 away from the feeding drive component 33, abutting against the surface of the tablet press mold. A guide channel is formed between the two guide plates 321 to achieve limiting, and the feeding plate 32 abuts against one side of the tablet press mold to achieve positioning. In this way, the guide plates 321 can effectively guide the powder box 31 to slide above the tablet press mold. The guide plates 321 are made of metal, are elongated in shape, and are perpendicular to the feeding plate 32. The important function of the guide plates 321 is to ensure the stability and accuracy of the powder box 31 during the sliding process and to prevent the powder box 31 from shifting.

[0018] In this embodiment, the top of the feeding plate 32 is equipped with a height adjustment component 322, which adjusts the installation height of the feeding plate 32. The height adjustment component 322 can be a screw and nut mechanism, whereby the operator rotates the nut to change the extension length of the screw, thereby adjusting the height of the feeding plate 32. The height adjustment component 322 allows the powder feeding device to be better adapted to different models of tablet presses, improving the versatility of the device.

[0019] The implementation principle of this embodiment is as follows: In order to realize the automatic delivery of powder to the tablet press mold, a support plate 1 is set to connect to the tablet press body. A through hole 11 is provided on it as a powder transfer channel. A feeding mechanism 2 is provided above to receive the powder from the tablet press hopper, and a feeding mechanism 3 is provided below to transport the powder to the mold. During feeding, the powder falls by gravity through the rotatable connecting piece 21 into the rectangular receiving cavity formed by the transparent "U"-shaped cover 22 and the support plate 1. The electric push rod drives the rectangular pusher plate 23 to move linearly along the support plate 1 in the gap 221 of the cover 22, thereby pushing the powder to the elongated through hole 11, so that it passes through the through hole 11 and falls into the feeding mechanism 3. During feeding, the feeding drive 33 drives the rectangular powder box 31 to slide along the feeding plate 32, which is flush with the upper surface of the tablet press mold, to the top of the mold. The metal guide plates 321 on both sides of the feeding plate 32 form a guide channel limit to ensure that the powder box 31 slides stably and accurately and prevents deviation. At the same time, the height adjustment piece 322 at the top of the feeding plate 32 can adjust the height of the feeding plate 32 to adapt to different models of tablet presses. Finally, the powder falls accurately from the discharge port 313 into the mold hole, improving the powder feeding efficiency and accuracy and meeting the needs of large-scale production.

[0020] Example 2

[0021] The tablet press provided in this application includes the automatic powder feeding device described in the above embodiments. A mold adapted to the automatic powder feeding device is provided on the worktable of the tablet press. The tablet press body generally consists of a machine body, a power system, and a pressing system. The machine body is usually made of cast iron or steel, possessing high strength and stability, and capable of withstanding the enormous pressure during the pressing process. The power system can be driven by an electric motor, transmitting power to the pressing system via belt drive or gear drive. The pressing system includes an upper die and a lower die, which cooperate under the drive of the power system to press the powder into the shape of a miniature inductor.

[0022] An automatic powder feeding device is detachably mounted on the tablet press body via a support plate 1. The feeding mechanism 2 is connected to the tablet press hopper, conveying powder to the powder box 31 of the feeding mechanism 3. The feeding drive 33 of the feeding mechanism 3 drives the powder box 31 to slide above the tablet press mold, and the powder falls into the mold from the outlet 313 of the powder box 31. The pressing system presses the powder in the mold, completing the forming process of the micro inductor.

[0023] The implementation principle of this embodiment is as follows: a tablet press is combined with an automatic powder feeding device. The automatic powder feeding device can accurately and efficiently deliver powder to the tablet press mold, and the tablet press then compresses the powder, realizing the automated production of miniature inductors. This combination improves production efficiency and product quality, reduces manual intervention, lowers production costs, and significantly improves and enhances existing miniature inductor manufacturing technology, meeting the market demand for large-scale, high-quality production.

[0024] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An automatic powder feeding device for processing miniature inductors, characterized in that, The device includes a support plate (1), a feeding mechanism (2), and a feeding mechanism (3). The support plate (1) is detachably connected to the tablet press body. The support plate (1) is provided with a through hole (11), and the feeding mechanism (2) and the feeding mechanism (3) are respectively provided at the top and bottom of the through hole (11). The feeding mechanism (2) is located on one side of the tablet press and is used to connect to the tablet press hopper. The feeding mechanism (3) includes a powder box (31), a feeding plate (32), and a feeding drive (33). The feeding plate (32) is located at the bottom of the support plate (1), and the lower surface of the powder box (31) is in close contact with the upper surface of the feeding plate (32). The feeding drive (33) drives the powder box (31) to slide above the tablet press mold.

2. The automatic powder feeding device for micro inductor processing according to claim 1, characterized in that, The feeding mechanism (2) includes a connecting member (21) and a cover (22). The cover (22) is disposed on the upper surface of the support plate (1) and communicates with the through hole (11). The tablet press hopper is connected to the cover (22) through the connecting member (21) and is used to feed material into the through hole (11) inside the cover (22).

3. The automatic powder feeding device for micro inductor processing according to claim 2, characterized in that, The feeding mechanism (2) further includes a pusher plate (23) and a pusher drive (24). The lower surface of the pusher plate (23) is in close contact with the upper surface of the support plate (1). The cover (22) is provided with a gap (221) for the pusher plate (23) to pass through. The pusher drive (24) drives the pusher plate (23) to pass through the gap (221) and pushes the material in the cover (22) to the through hole (11).

4. The automatic powder feeding device for micro inductor processing according to claim 2, characterized in that, The connecting member (21) is rotatably mounted on the support plate (1).

5. The automatic powder feeding device for micro inductor processing according to claim 3, characterized in that, The cover (22) has a U-shaped structure with the opening facing downwards, and the inner wall of the cover (22) is in contact with the surface of the pusher plate (23).

6. The automatic powder feeding device for micro inductor processing according to claim 1, characterized in that, Guide plates (321) are provided on both sides of the feeding plate (32). The two guide plates (321) abut against the two sides of the powder box (31) respectively, so as to guide the powder box (31) to slide above the mold of the tablet press.

7. The automatic powder feeding device for micro inductor processing according to claim 6, characterized in that, Both guide plates (321) extend from the side of the feed plate (32) away from the feed drive (33) and abut against the mold surface of the tablet press.

8. The automatic powder feeding device for micro inductor processing according to claim 1, characterized in that, The top of the feeding plate (32) is provided with a height adjustment component (322) for adjusting the installation height of the feeding plate (32).

9. The automatic powder feeding device for micro inductor processing according to claim 1, characterized in that, The powder box (31) includes a box body (311) and a guide plate (312). The bottom of the box body (311) is provided with a discharge port (313). The guide plate (312) is inclined inside the box body (311) and tilted downward toward the discharge port (313).

10. A tablet press, characterized in that, The automatic powder feeding device includes any one of claims 1 to 9, wherein the worktable of the tablet press is provided with a mold adapted to the automatic powder feeding device.

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