A mold for injection molding inductors

Abstract

This invention discloses a mold for injection molding inductors, comprising a fixed base and a fixed post. The fixed post is fixedly installed at the middle position of the upper surface of the fixed base. A connecting ring is fixedly installed on the lower part of one side of the outer surface of the fixed post. A lower mold base is fixedly installed on the outer surface of the fixed post. A lower mold mechanism is provided on the upper surface of the lower mold base, and an upper mold mechanism is provided above the lower mold base. This invention relates to the field of inductor molding mold technology. This injection molding mold for inductors uses through-holes at the four corners of the upper and lower mold bases and the upper surface of the mounting plate, through which limiting posts are inserted. This ensures that the upper and lower mold bases and the mounting plate are connected at the same height line. The limiting posts are threadedly engaged with threaded sleeves No. 5 and No. 4 on the upper and bottom surfaces of the upper mold base. The limiting posts are engaged with threaded sleeves No. 2 and No. 1 on the upper and bottom surfaces of the lower mold base, thus maintaining the stability of the limiting posts.

Description

Technical Field

[0001] This invention relates to the field of inductor molding die technology, specifically to a die for injection molding inductors. Background Technology

[0002] An inductor is a component that converts electrical energy into magnetic energy and stores it. The structure of an inductor is similar to a transformer, but it has only one winding. An inductor has a certain inductance, which only impedes changes in current. If no current is flowing through the inductor, it will attempt to impede the current flow when the circuit is closed; if current is flowing through the inductor, it will attempt to maintain a constant current when the circuit is open. Inductors are also called chokes, reactors, or dynamic reactors. As a component that can convert electrical energy into magnetic energy and store it, inductors are widely used in consumer electronics, communications, automotive, aerospace, and other fields. Molded inductors, due to their small size, high current capacity, and high manufacturing efficiency, are increasingly favored in the electronics industry.

[0003] Currently, molded inductors are mainly formed by cold pressing metal powder and coils sequentially using a molded inductor, or by a combination of cold pressing and hot pressing. Specifically, the wound coil is placed in the mold cavity of the molded inductor mold, and fluid metal powder is injected into the mold cavity. Pressure is then applied to the surface of the metal powder to form the inductor.

[0004] For example, the injection molding mold for an inductor disclosed in Chinese Invention Patent Publication No. CN115870500A includes a power assembly, an upper mold assembly, and a lower mold assembly. The upper mold assembly includes an upper mold base plate, an upper mold pressure plate, and an upper mold plate. The upper mold base plate is movably mounted on the machine base. The upper mold plate has an upper mold cavity. The upper mold pressure plate has multiple upper ejector pins that can extend into or retract from the upper mold cavity. The lower mold assembly includes a lower mold base plate, a lower mold pressure plate, and a lower mold plate. The lower mold base plate is movably mounted on the machine base. The lower mold plate has a lower mold cavity. The lower mold pressure plate has multiple lower ejector pins that can extend into or retract from the lower mold cavity. The power assembly is disposed on the upper mold assembly and / or the lower mold assembly and is used to provide a driving force to drive the upper mold pressure plate and the lower mold pressure plate to move toward each other or away from each other. The injection molding mold for inductors provided by the present invention allows for adjustment of the length of the upper ejector pin extending into the upper mold cavity and the length of the lower ejector pin extending into the lower mold cavity, enabling clamping of coils of different specifications.

[0005] When the above-mentioned device is used for inductor injection molding, the component used for spraying metal powder may cause metal powder to splatter during the feeding process, which will affect the feeding effect. In particular, the poor tightness of the connection between the upper mold and the lower mold may cause metal powder to overflow during injection molding, resulting in material waste.

[0006] To address this issue, we propose a mold for injection molding inductors. Summary of the Invention

[0007] To address the shortcomings of existing technologies, this invention provides a mold for injection molding inductors, which solves the problems mentioned in the background section.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a mold for injection molding inductors, comprising a fixed base and a fixed column, wherein the fixed column is fixedly installed at the middle position of the upper surface of the fixed base, a connecting ring is fixedly installed on the lower part of one side of the outer surface of the fixed column, a connecting column is fixedly installed on one end surface of the connecting ring, a fixed block is fixedly connected to one end surface of the connecting column, a circular plate is fixedly installed on the upper surface of the fixed block, a lower mold base is fixedly installed on the outer surface of the fixed column, a lower mold mechanism is provided on the upper surface of the lower mold base, and an upper mold mechanism is provided above the lower mold base;

[0009] The lower mold mechanism includes a connecting assembly and a supporting assembly. The connecting assembly includes a mounting plate fixedly installed on the top surface of a fixed column. A connecting block is provided below the mounting plate. A support rod passing through the upper surface of the mounting plate is fixedly installed on the upper surface of the connecting block. A first threaded sleeve is rotatably connected to the bottom surface of the lower mold base. A circular hole is passed through the upper surface of both the lower mold base and the mounting plate. A limit post is rotatably connected inside the circular hole. The lower part of the outer surface of the limit post engages with the inner wall of the first threaded sleeve. A second threaded sleeve and a third threaded sleeve are sequentially connected to the upper part of the outer surface of the limit post. The supporting assembly includes a square plate, a cylinder, a telescopic column, a first limit frame, an injection plate, connecting bolts, an air pipe, and a control valve.

[0010] A further improvement of the technical solution of the present invention is as follows: a square plate is fixedly installed on one side of the outer surface of the mounting plate, a cylinder is fixedly installed on one side of the outer surface of the square plate, the output end of the cylinder is connected to a telescopic column, a first limit bracket is fixedly connected to the upper surface of the telescopic column, an injection molded plate is fixedly installed on the upper surface of the mounting plate, a connecting bolt is fixedly installed on one side of the outer surface of the mounting plate, an air pipe is fixedly connected to one end of the connecting bolt, and a control valve is fixedly connected to the outer surface of the air pipe. The lower mold base is installed on the outer surface of the fixed column. The lower mold base and the mounting plate are connected by a connecting block and a support rod fixedly installed on the upper surface of the connecting block. At the same time, the lower mold base provides support for the installation position of the mounting plate. The limiting column passes through the round holes at the four corners of the upper surface of the lower mold base and the mounting plate. The lower part of the outer surface of the limiting column is engaged with the inner walls of the first, second and third threaded sleeves to maintain stability, so that the lower mold base and the mounting plate are on the same height line, which facilitates the subsequent injection molding operation. The cylinder connected by the square plate pushes the telescopic column to rise, which drives the first limiting frame to rise or fall to adjust the contact height between the first and second limiting frames. During injection molding, the steam delivery volume in the air pipe is adjusted by operating the control valve to control the heating of the molding process.

[0011] A further improvement of the technical solution of the present invention is that: the upper mold mechanism includes a feeding component and a pressing component; the feeding component includes an upper mold seat that is engaged with the outer surface of the limiting post; a drive motor is provided on one side of the outer surface of the upper mold seat; a spiral column is connected to the output end of the drive motor; a protective cylinder is sleeved on the outer surface of the spiral column; a base plate is fixedly connected to the bottom surface of the upper mold seat; a discharge cylinder is fixedly connected to the middle position of the bottom surface of the base plate; a hole is penetrating the middle position of the upper surface of the upper mold seat; and the upper end of the discharge cylinder passes through the hole and contacts one end of the spiral column.

[0012] A further improvement of the technical solution of the present invention is that: the pressing component includes a pad fixedly installed at the middle position of the upper surface of the upper mold base, a circular seat fixedly installed on the upper surface of the pad, a column fixedly installed on the upper surface of the circular seat, an annular plate fixedly installed on the upper part of the outer surface of the column, a hydraulic cylinder fixedly installed on the inner wall of the annular plate, and a connecting cylinder connected to the output end of the hydraulic cylinder.

[0013] A further improvement of the technical solution of the present invention is as follows: a fixing ring is fixedly installed on one side of the upper part of the outer surface of the drive motor, a rotating shaft is sleeved on the outer surface of the fixing ring, a first concave block is fixedly connected to both ends of the outer surface of the rotating shaft, a fixing rod is fixedly connected to one side of the outer surface of the first concave block, a connecting column is fixedly connected to one end of the fixing rod, and a second concave block is fixedly connected to the lower part of one side of the outer surface of the annular plate. When the inductor is injection molded, the power supply of the drive motor is turned on, the output end of the drive motor drives the spiral column to rotate, so that the metal powder is spirally conveyed forward under the rotation of the spiral column. When it reaches the position that contacts the upper end of the discharge cylinder, it falls through the discharge cylinder to complete the feeding, so that the metal powder reaches the upper surface of the injection molding plate fixedly installed on the upper surface of the mounting plate for molding operation, and the hydraulic cylinder is operated. The output end of the hydraulic cylinder pushes the connecting cylinder to descend, and the connecting cylinder drives the upper mold seat to descend, so that the bottom surface of the second limit frame and the upper surface of the first limit frame make staggered contact and connection closure.

[0014] A further improvement of the technical solution of the present invention is that: a fixed column is fixedly connected to the four corners of the upper surface of the upper mold base, a connecting spring is fixedly connected to the upper surface of the fixed column, and a connecting rod is fixedly installed at the upper end of the connecting spring.

[0015] A further improvement of the technical solution of the present invention is that: a vertical rod is fixedly connected to the bottom surface of the discharge cylinder, a second limiting frame is fixedly connected to the bottom surface of the vertical rod, a seat is fixedly connected to the bottom surface of the discharge cylinder, and the bottom surface of the second limiting frame and the upper surface of the first limiting frame are engaged in a staggered manner.

[0016] A further improvement of the technical solution of the present invention is that: the upper mold base has through holes at the four corners of its upper surface; the bottom surface of the upper mold base is rotatably connected to a No. 4 threaded sleeve; the upper surface of the upper mold base is rotatably connected to a No. 5 threaded sleeve; the inner walls of the No. 4 and No. 5 threaded sleeves are engaged with the outer surface of the limiting post; the limiting post passes through the upper mold base, the mounting plate, and the lower mold base in sequence; the position of the limiting post is maintained stably from top to bottom through engagement with the No. 5, No. 4, No. 3, No. 2, and No. 1 threaded sleeves, thus ensuring that the upper mold base, the mounting plate, and the lower mold base are at the same height, so that the upper mold base slides on the outer surface of the limiting post when it descends, achieving stable descent and preventing deviation from the path.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] This invention maintains stable installation of the limiting posts by passing through circular holes at the four corners of the upper and lower mold bases and the mounting plate, inserting limiting posts through the circular holes, and ensuring that the upper and lower mold bases and the mounting plate are connected at the same height. The limiting posts are threaded on both sides of their outer surface and are threaded to engage with threaded sleeves No. 5 and No. 4 on the upper and bottom surfaces of the upper mold base. The limiting posts are also threaded to threaded sleeves No. 2 and No. 1 on the upper and bottom surfaces of the lower mold base.

[0019] This invention secures the drive motor by installing a drive motor on one side of the outer surface of the upper mold base. The drive motor is connected to a fixed ring and a rotating shaft on the upper side of its outer surface, and is fixedly connected to the outer surface of a second concave column connected to the lower part of the outer surface of the annular plate via a first concave block, a fixed rod, and a connecting column. When the drive motor is working, it drives the threaded rod to rotate, which in turn drives the metal powder to be conveyed and fed. The powder is then discharged from the discharge cylinder at the contact position of one end of the threaded rod for injection molding, thus avoiding the waste caused by the spraying and splashing of metal powder.

[0020] This invention, by setting up a downward pressing component, when injection molding an inductor with metal powder, the output end of the hydraulic cylinder pushes the connecting cylinder downward, thereby driving the upper mold seat to descend. The upper mold seat descends through the second limiting frame set below the upper mold seat, and the bottom surface of the second limiting frame contacts the upper surface of the first limiting frame. The two limiting frames are staggered and meshed, achieving a seal between the mold seat and the injection plate installed on the upper surface of the mounting plate, which facilitates material feeding. Steam heating is delivered through an air pipe, and the amount of steam delivered is controlled by a control valve to heat the molding process, improving the convenience of injection molding. Attached Figure Description

[0021] Figure 1 A first-view structural schematic diagram of a mold for injection molding inductors;

[0022] Figure 2 A second-view structural diagram of a mold for injection molding inductors;

[0023] Figure 3 This is a schematic diagram of the upper mold mechanism for injection molding inductors.

[0024] Figure 4 Mold for injection molding inductors Figure 3 A magnified schematic diagram of the local structure at point A;

[0025] Figure 5 A schematic diagram of the pressing component structure of a mold for injection molding inductors;

[0026] Figure 6 This is a schematic diagram of the lower mold mechanism for injection molding inductors.

[0027] Figure 7 This is a schematic diagram of the support component structure for a mold used in injection molding of inductors.

[0028] In the diagram: 1. Fixed base; 2. Connecting ring; 201. Connecting column; 202. Fixed block; 203. Circular plate; 3. Fixed column; 301. Lower mold base; 302. Mounting plate; 303. Connecting block; 304. Support rod; 305. No. 1 threaded sleeve; 306. Round hole; 307. Limiting column; 308. No. 2 threaded sleeve; 309. No. 3 threaded sleeve; 310. Square plate; 311. Cylinder; 312. Telescopic column; 313. No. 1 limiting bracket; 314. Injection plate; 315. Connecting bolt; 316. Air pipe; 317. Control valve; 4. Upper mold base; 401. No. 4 Threaded sleeve; 402, No. 5 threaded sleeve; 403, fixed column cylinder; 404, connecting spring; 405, connecting rod; 406, pad; 407, circular seat; 408, column; 409, annular plate; 410, hydraulic cylinder; 411, connecting cylinder; 412, drive motor; 413, fixing ring; 414, rotating shaft; 415, No. 1 concave block; 416, fixing rod; 417, connecting column; 418, No. 2 concave block; 419, spiral column; 420, protective cylinder; 421, base plate; 422, discharge cylinder; 423, vertical rod; 424, No. 2 limit frame; 425, seat. Detailed Implementation

[0029] Various exemplary embodiments, features, and aspects of this application will now be described in detail with reference to the accompanying drawings. The same reference numerals in the drawings denote elements that have the same or similar functions. Although various aspects of the embodiments are shown in the drawings, they are not necessarily drawn to scale unless specifically indicated otherwise.

[0030] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments.

[0031] Furthermore, to better illustrate this application, numerous specific details are provided in the following detailed embodiments. Those skilled in the art should understand that this application can be implemented without certain specific details. In some instances, methods, means, and elements well-known to those skilled in the art have not been described in detail in order to highlight the main points of this application.

[0032] Reference Figure 1 - Figure 7 This invention provides three technical solutions:

[0033] Example 1:

[0034] A mold for injection molding an inductor includes a fixed base 1 and a fixed post 3. The fixed post 3 is fixedly installed at the middle position of the upper surface of the fixed base 1. A connecting ring 2 is fixedly installed on the lower part of one side of the outer surface of the fixed post 3. A connecting post 201 is fixedly installed on one end surface of the connecting ring 2. A fixed block 202 is fixedly connected to one end surface of the connecting post 201. A circular plate 203 is fixedly installed on the upper surface of the fixed block 202. A lower mold base 301 is fixedly installed on the outer surface of the fixed post 3. A lower mold mechanism is provided on the upper surface of the lower mold base 301. An upper mold mechanism is provided above the lower mold base 301.

[0035] The lower mold mechanism includes a connecting component and a supporting component. The connecting component includes a mounting plate 302 fixedly installed on the top surface of the fixed column 3. A connecting block 303 is provided below the mounting plate 302. A support rod 304 passing through the upper surface of the mounting plate 302 is fixedly installed on the upper surface of the connecting block 303. A first threaded sleeve 305 is rotatably connected to the bottom surface of the lower mold base 301. A circular hole 306 is passed through the upper surface of both the lower mold base 301 and the mounting plate 302. A limit post 307 is rotatably connected inside the circular hole 306. The lower part of the outer surface of the limit post 307 engages with the inner wall of the first threaded sleeve 305. A second threaded sleeve 308 and a third threaded sleeve 309 are sequentially connected to the upper part of the outer surface of the limit post 307. The supporting component includes a square plate 310, a cylinder 311, a telescopic column 312, a first limit frame 313, an injection plate 314, a connecting bolt 315, an air pipe 316, and a control valve 317.

[0036] A square plate 310 is fixedly installed on one side of the outer surface of the mounting plate 302. A cylinder 311 is fixedly installed on one side of the outer surface of the square plate 310. A telescopic column 312 is connected to the output end of the cylinder 311. A first limit bracket 313 is fixedly connected to the upper surface of the telescopic column 312. An injection molded plate 314 is fixedly installed on the upper surface of the mounting plate 302. A connecting bolt 315 is fixedly installed on one side of the outer surface of the mounting plate 302. An air pipe 316 is fixedly connected to one end of the connecting bolt 315. A control valve 317 is fixedly connected to the outer surface of the air pipe 316.

[0037] In this embodiment, the lower mold base 301 is installed on the outer surface of the fixed column 3. The lower mold base 301 and the mounting plate 302 are connected by a connecting block 303 and a support rod 304 fixedly installed on the upper surface of the connecting block 303. At the same time, the lower mold base 301 provides support for the installation position of the mounting plate 302. The limiting column 307 passes through the round holes 306 at the four corners of the upper surface of the lower mold base 301 and the mounting plate 302. The lower part of the outer surface of the limiting column 307 is connected to the first threaded sleeve 305, the second threaded sleeve 308, and the third threaded sleeve 309. The threaded sleeve 309 maintains a stable meshing connection, ensuring that the lower mold base 301 and the mounting plate 302 are on the same height line, which facilitates subsequent injection molding operations. The cylinder 311 connected by the square plate 310 pushes the telescopic column 312 upward when the output end of the cylinder 311 pushes it upward, thereby driving the first limit frame 313 to rise or fall to adjust the contact height between the first limit frame 313 and the second limit frame 424. During injection molding, the amount of steam delivered in the air pipe 316 is adjusted by operating the control valve 317 to control the heating of the molding process.

[0038] Example 2:

[0039] Based on Embodiment 1: The upper mold mechanism includes a feeding assembly and a pressing assembly. The feeding assembly includes an upper mold base 4 that is engaged with the outer surface of the limiting post 307. A drive motor 412 is provided on one side of the outer surface of the upper mold base 4. The output end of the drive motor 412 is connected to a spiral post 419. A protective sleeve 420 is sleeved on the outer surface of the spiral post 419. A base plate 421 is fixedly connected to the bottom surface of the upper mold base 4. A discharge cylinder 422 is fixedly connected to the middle position of the bottom surface of the base plate 421. A hole is penetrating the middle position of the upper surface of the upper mold base 4. The upper end of the discharge cylinder 422 passes through the hole and contacts one end of the spiral post 419.

[0040] The pressing assembly includes a pad 406 fixedly installed at the middle position of the upper surface of the upper mold base 4. A circular seat 407 is fixedly installed on the upper surface of the pad 406. A column 408 is fixedly installed on the upper surface of the circular seat 407. An annular plate 409 is fixedly installed on the upper part of the outer surface of the column 408. A hydraulic cylinder 410 is fixedly installed on the inner wall of the annular plate 409. The output end of the hydraulic cylinder 410 is connected to a connecting cylinder 411.

[0041] A retaining ring 413 is fixedly installed on one side of the upper part of the outer surface of the drive motor 412. A rotating shaft 414 is sleeved on the outer surface of the retaining ring 413. A first concave block 415 is fixedly connected to both ends of the outer surface of the rotating shaft 414. A fixing rod 416 is fixedly connected to one side of the outer surface of the first concave block 415. A connecting post 417 is fixedly connected to one end of the fixing rod 416. A second concave block 418 is fixedly connected to the lower part of one side of the outer surface of the annular plate 409.

[0042] In this embodiment, when the inductor is injection molded, the power supply of the drive motor 412 is turned on. The output end of the drive motor 412 drives the spiral column 419 to rotate, so that the metal powder is spirally conveyed forward under the rotation of the spiral column 419. When it reaches the position that contacts the upper end of the discharge cylinder 422, it falls through the discharge cylinder 422 to complete the feeding. The metal powder reaches the upper surface of the injection plate 314 fixedly installed on the upper surface of the mounting plate 302 for molding operation. At the same time, the hydraulic cylinder 410 is operated. The output end of the hydraulic cylinder 410 pushes the connecting cylinder 411 to descend. The connecting cylinder 411 drives the upper mold seat 4 to descend, so that the bottom surface of the second limit frame 424 and the upper surface of the first limit frame 313 make staggered contact and connection closure.

[0043] Example 3:

[0044] Based on Embodiment 1 and Embodiment 2: Fixed column cylinders 403 are fixedly connected to the four corners of the upper surface of the upper mold base 4, and connecting springs 404 are fixedly connected to the upper surface of the fixed column cylinders 403. Connecting rods 405 are fixedly installed on the upper end of the connecting springs 404.

[0045] A vertical rod 423 is fixedly connected to the bottom surface of the discharge cylinder 422. A second limiting frame 424 is fixedly connected to the bottom surface of the vertical rod 423. A seat 425 is fixedly connected to the bottom surface of the discharge cylinder 422. The bottom surface of the second limiting frame 424 and the upper surface of the first limiting frame 313 are misaligned and engaged.

[0046] The upper mold base 4 has four through holes 306 at the four corners of its upper surface. The bottom surface of the upper mold base 4 is rotatably connected to a No. 4 threaded sleeve 401, and the upper surface of the upper mold base 4 is rotatably connected to a No. 5 threaded sleeve 402. The inner walls of the No. 4 threaded sleeve 401 and the No. 5 threaded sleeve 402 are engaged with the outer surface of the limiting post 307.

[0047] In this embodiment, the limiting post 307 passes through the upper mold base 4, the mounting plate 302, and the lower mold base 301 in sequence. The position of the limiting post 307 is maintained by meshing with the No. 5 threaded sleeve 402, the No. 4 threaded sleeve 401, the No. 3 threaded sleeve 309, the No. 2 threaded sleeve 308, and the No. 1 threaded sleeve 305 from top to bottom. This ensures that the upper mold base 4, the mounting plate 302, and the lower mold base 301 are at the same height, so that the upper mold base 4 slides on the outer surface of the limiting post 307 when it descends, achieving stable descent and preventing deviation from the path.

[0048] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0049] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mold for injection molding an inductor, comprising a fixed base (1) and a fixed post (3), wherein the fixed post (3) is fixedly installed at the middle position of the upper surface of the fixed base (1), a connecting ring (2) is fixedly installed on the lower part of one side of the outer surface of the fixed post (3), a connecting post (201) is fixedly installed on one end surface of the connecting ring (2), a fixing block (202) is fixedly connected to one end surface of the connecting post (201), and a circular plate (203) is fixedly installed on the upper surface of the fixing block (202), characterized in that: The lower mold base (301) is fixedly installed on the outer surface of the fixed column (3), the lower mold base (301) is provided with a lower mold mechanism on the upper surface, and the upper mold mechanism is provided above the lower mold base (301); The lower mold mechanism includes a connecting component and a supporting component. The connecting component includes a mounting plate (302) fixedly installed on the top surface of the fixed column (3). A connecting block (303) is provided below the mounting plate (302). A support rod (304) passing through the upper surface of the mounting plate (302) is fixedly installed on the upper surface of the connecting block (303). A threaded sleeve (305) is rotatably connected to the bottom surface of the lower mold base (301). Both the lower mold base (301) and the upper surface of the mounting plate (302) have through holes (306). The circular hole (306) is rotatably connected to a limiting post (307). The lower part of the outer surface of the limiting post (307) engages with the inner wall of the first threaded sleeve (305). The upper part of the outer surface of the limiting post (307) is sequentially connected to the second threaded sleeve (308) and the third threaded sleeve (309). The support assembly includes a square plate (310), a cylinder (311), a telescopic post (312), a first limiting frame (313), an injection molded plate (314), a connecting bolt (315), an air pipe (316), and a control valve (317). The upper mold mechanism includes a feeding assembly and a pressing assembly. The feeding assembly includes an upper mold base (4) that is engaged with the outer surface of the limiting post (307). A drive motor (412) is provided on one side of the outer surface of the upper mold base (4). The output end of the drive motor (412) is connected to a spiral post (419). A protective sleeve (420) is sleeved on the outer surface of the spiral post (419). A base plate (421) is fixedly connected to the bottom surface of the upper mold base (4). A discharge cylinder (422) is fixedly connected to the middle position of the bottom surface of the base plate (421). A hole is penetrating the middle position of the upper surface of the upper mold base (4). The upper end of the discharge cylinder (422) passes through the hole and contacts one end of the spiral post (419).

2. The mold for injection molding an inductor according to claim 1, characterized in that: The square plate (310) is fixedly installed on one side of the outer surface of the mounting plate (302). A cylinder (311) is fixedly installed on one side of the outer surface of the square plate (310). A telescopic column (312) is connected to the output end of the cylinder (311). A first limit frame (313) is fixedly connected to the upper surface of the telescopic column (312). An injection molded plate (314) is fixedly installed on the upper surface of the mounting plate (302). A connecting bolt (315) is fixedly installed on one side of the outer surface of the mounting plate (302). An air pipe (316) is fixedly connected to one end of the connecting bolt (315). A control valve (317) is fixedly connected to the outer surface of the air pipe (316).

3. The mold for injection molding an inductor according to claim 1, characterized in that: The pressing assembly includes a pad (406) fixedly installed at the middle position of the upper surface of the upper mold base (4). A circular seat (407) is fixedly installed on the upper surface of the pad (406). A column (408) is fixedly installed on the upper surface of the circular seat (407). An annular plate (409) is fixedly installed on the upper part of the outer surface of the column (408). A hydraulic cylinder (410) is fixedly installed on the inner wall of the annular plate (409). The output end of the hydraulic cylinder (410) is connected to a connecting cylinder (411).

4. The mold for injection molding an inductor according to claim 3, characterized in that: A fixing ring (413) is fixedly installed on one side of the upper part of the outer surface of the drive motor (412). A rotating shaft (414) is sleeved on the outer surface of the fixing ring (413). A first concave block (415) is fixedly connected to both ends of the outer surface of the rotating shaft (414). A fixing rod (416) is fixedly connected to one side of the outer surface of the first concave block (415). A connecting column (417) is fixedly connected to one end of the fixing rod (416). A second concave block (418) is fixedly connected to the lower part of one side of the outer surface of the annular plate (409).

5. The mold for injection molding an inductor according to claim 4, characterized in that: The upper mold base (4) has fixed column cylinders (403) fixedly connected at the four corners of its upper surface. The upper surface of the fixed column cylinder (403) is fixedly connected with a connecting spring (404). The upper end of the connecting spring (404) is fixedly installed with a connecting rod (405).

6. The mold for injection molding an inductor according to claim 1, characterized in that: A vertical rod (423) is fixedly connected to the bottom surface of the discharge cylinder (422), a second limiting frame (424) is fixedly connected to the bottom surface of the vertical rod (423), a seat (425) is fixedly connected to the bottom surface of the discharge cylinder (422), and the bottom surface of the second limiting frame (424) and the upper surface of the first limiting frame (313) are engaged in a staggered manner.

7. The mold for injection molding an inductor according to claim 1, characterized in that: The upper mold base (4) has four through holes (306) at the four corners of its upper surface. The bottom surface of the upper mold base (4) is rotatably connected to a No. 4 threaded sleeve (401), and the upper surface of the upper mold base (4) is rotatably connected to a No. 5 threaded sleeve (402). The inner walls of the No. 4 threaded sleeve (401) and the No. 5 threaded sleeve (402) are engaged with the outer surface of the limiting post (307).

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