A metal powder injection molding apparatus

Abstract

The application discloses a kind of metal powder injection molding equipment, including fixed base and fixed plate, fixed plate is fixedly installed on the upper surface both sides of fixed base, the outer surface one side of fixed plate is fixedly installed with baffle, the outer surface one side of baffle is fixedly installed with mixing tank, the bottom surface of fixed base is provided with several support foot pads, mixing mechanism is provided in the inside of mixing tank, and injection molding mechanism is provided at the one end of conveying fixed base.The application relates to the technical field of metal powder processing.The metal powder injection molding equipment, by fixing and installing powder conveying pump on the upper surface of support column, when powder conveying pump works, the metal powder mixed after stirring in the discharge chute body is extracted through connecting pipe, input into conveying pipe, to complete the feeding work of injection molding, the electromagnetic valve fixedly installed on the outer surface one side of conveying pipe can control the opening and closing of channel in conveying pipe according to the amount of metal powder required for one injection molding, so as to control the amount of metal powder for feeding injection molding.

Description

Technical Field

[0001] This invention relates to the field of metal powder processing technology, specifically to a metal powder injection molding equipment. Background Technology

[0002] Metal powder refers to a group of metal particles with a size of less than 1 mm. It includes single metal powders, alloy powders, and powders of certain refractory compounds with metallic properties, and is the main raw material for powder metallurgy. Metal powder injection molding technology involves uniformly mixing solid powder with an organic binder, injecting it into a mold cavity using an injection molding machine for curing, then removing the binder from the preform using chemical or thermal decomposition methods, and finally densifying it by sintering to obtain the final product.

[0003] In existing metal powder injection molding equipment technology, the mixing components are mostly mechanically stirred. To ensure thorough mixing, a long stirring time is required, resulting in low efficiency. At the same time, there is a risk that even if the mixing time is sufficient, the wide stirring range may not result in thorough mixing. Furthermore, the loading and unloading of metal powder during injection molding requires manual operation, which is not convenient for rapid operation and affects the injection molding efficiency.

[0004] For example, a metal powder injection molding device disclosed in Chinese Invention Patent Publication No. CN115846662A includes a mixing rack assembled between a mixing tank and a feeding pipe assembly. The mixing rack has several throwing components. It also has several rotating feeding rod structures arranged in a circular array. Each rotating feeding rod structure includes a threaded rod, which is threadedly engaged with a pusher plate structure. The pusher plate structure moves to push powder into the throwing components and drives the threaded rod to rotate. The threaded rod and the rotating feeding rod structure also include an integrally fixed shaft. After the threaded rod rotates, the shaft drives a spiral plate distributed along its shaft to rotate. The rotating spiral plate then squeezes and pushes the powder inside towards several throwing holes on the side wall of the throwing pipe, widely dispersing it into the mixing tank and maximizing the contact area for rapid and thorough mixing with the adhesive in the air.

[0005] While the aforementioned device solves the problem of mixing and stirring metal powder before injection molding, it is inconvenient to operate the injection molding process after mixing and stirring. The mixed metal powder is not easy to discharge for injection molding, and there may be metal powder residue.

[0006] Therefore, we propose a metal powder injection molding equipment to solve the above problems. Summary of the Invention

[0007] To address the shortcomings of existing technologies, this invention provides a metal powder injection molding device that solves the problems mentioned in the background section.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a metal powder injection molding equipment, comprising a fixed base and a fixed plate, wherein the fixed plate is fixedly installed on both sides of the upper surface of the fixed base, a baffle is fixedly installed on one side of the outer surface of the fixed plate, a mixing tank is fixedly installed on one side of the outer surface of the baffle, a plurality of supporting feet are provided on the bottom surface of the fixed base, an installation groove is provided through one side of the outer surface of the mixing tank, an observation window is fastened in the installation groove, a handle is fixedly connected to one side of the outer surface of the observation window, a feed column is fixedly installed on the upper part of the other side of the outer surface of the mixing tank, a cover plate is snapped onto the upper surface of the feed column, a mixing mechanism is provided inside the mixing tank, a conveying mechanism is provided on one side of the outer surface of the mixing tank, and an injection molding mechanism is provided at one end of the conveying fixed base;

[0009] The conveying mechanism includes a feeding trough fixedly installed on the lower part of the outer surface of the mixing tank. A connecting pipe is fixedly connected to one side of the outer surface of the feeding trough. A powder conveying pump is fixedly connected to one end of the connecting pipe. A support column is fixedly connected to the bottom surface of the powder conveying pump. A conveying pipe is fixedly connected to one side of the upper part of the powder conveying pump. A solenoid valve is fixedly connected to the outer surface of the conveying pipe.

[0010] A further improvement of the technical solution of the present invention is that: the mixing mechanism includes a drive motor fixedly installed on one side of the upper surface of the fixed base; the output end of the drive motor is connected to a transmission shaft; a first roller is fixedly connected to one end surface of the transmission shaft; a belt is connected to the outer surface of the first roller; a first fixing block is fixedly connected to one side of the outer surface of the baffle; a connecting shaft is rotatably connected to one side of the outer surface of the first fixing block; a second roller is fixedly connected to one end surface of the connecting shaft; the outer surface of the second roller is connected to the outer surface of the belt; a fixing cylinder is fixedly connected to the other end of the connecting shaft; a connecting rod is fixedly installed on the outer surface of the fixing cylinder; a fixing bolt is fixedly connected to one side of the outer surface of the connecting rod; a stirring plate is fixedly connected to one side of the outer surface of the connecting rod; the stirring plate is connected to the connecting rod by the fixing bolt; protective covers are snapped onto the outer surfaces of the first and second rollers; and the outer surface of the mixing tank is further... A second fixing block is fixedly connected to one side. One side of the outer surface of the second fixing block is rotatably connected to one end of the fixed cylinder. Metal powder is poured into the mixing tank from the feed column. The power of the drive motor is turned on, and the output end of the drive motor drives the transmission shaft to rotate. The transmission shaft drives the first roller to rotate, which in turn drives the belt to rotate. This drives the second roller connected to the other end of the belt to rotate. The second roller drives the connecting shaft to rotate, which in turn drives the fixed cylinder to rotate. This causes the connecting rod and fixing bolt fixed on the outer surface of the fixed cylinder to rotate, stirring and mixing the metal powder in the mixing tank. During stirring and mixing, the mixing effect in the mixing tank can be observed through the observation window. The stirred and mixed metal powder accumulates inside the feeding trough. The powder conveying pump is operated to extract the metal powder accumulated in the feeding trough through the connecting pipe and pump it into the conveying pipe, which then enters the powder inlet pipe for injection molding.

[0011] A further improvement of the technical solution of the present invention is that: the injection molding mechanism includes a fixing unit, an upper mold unit, and a lower mold unit. The fixing unit includes a fixing seat disposed on one side of the outer surface of the fixing base. A column is fixedly connected to the upper surface of the fixing seat. A top plate is fixedly connected to the upper surface of the column. A cylinder is fixedly installed at the middle position of the upper surface of the top plate. A telescopic column is connected to the output end of the cylinder. An injection molding seat is fixedly installed on the bottom surface of the telescopic column.

[0012] A further improvement of the technical solution of the present invention is that: the upper mold unit includes a lower cavity plate fixedly connected to the bottom surface of the injection molding base, a powder inlet pipe is fixedly connected to one side of the outer surface of the lower cavity plate, a fixing rod is fixedly installed in the middle of the bottom surface of the injection molding base, an upper mold block is snapped into the bottom surface of the lower cavity plate, a discharge hole is passed through the middle of the bottom surface of the upper mold block, and rubber plugs are fixedly installed at the four corners of the bottom surface of the injection molding base.

[0013] A further improvement of the technical solution of the present invention is that: the lower mold unit includes a mounting plate fixedly installed on the upper surface of the fixed base; a partition plate is fixedly connected to the upper surface of the mounting plate; a connecting base is fixedly installed on the upper surface of the partition plate; sealing columns are fixedly installed at the four corners of the upper surface of the connecting base; a mold base is fixedly installed on the upper surface of the connecting base; a lower mold block is fixedly installed on the upper surface of the mold base; and multiple vertical rods passing through the connecting base are fixedly installed on the upper surface of the partition plate, wherein an operating cylinder is used. The output end of the cylinder pushes the telescopic column to descend, and the telescopic column drives the injection base and the lower cavity plate to descend, so that the bottom surface of the lower cavity plate contacts the upper surface of the connecting base. At the same time, the rubber plug moves with the lower cavity plate and contacts the upper surface of the sealing column to seal the connection between the lower cavity plate and the connecting base. The metal powder that enters the cavity between the lower cavity plate and the injection base through the powder inlet pipe is discharged through the discharge hole penetrating the bottom surface of the upper mold block for injection molding.

[0014] A further improvement of the technical solution of the present invention is as follows: a compression spring is fixedly connected to the upper surface of the partition plate, a telescopic rod is connected inside the compression spring, a shock absorber is connected to the upper surface of the partition plate, a cavity is provided between the partition plate and the connecting seat, a connector is fixedly installed on one side of the outer surface of the partition plate, and a fixed tube is sealed to the outer surface of the connector. When the lower cavity plate descends with the injection molding seat, it continues to move downward after the bottom surface of the lower cavity plate contacts the upper surface of the connecting seat, squeezing the connecting seat, thereby squeezing the telescopic rod, and then squeezing the compression spring. The compression spring generates a restoring elastic force under compression, pushing the telescopic rod in the opposite direction, pushing the connecting seat upward, thereby counteracting the vibration generated when the lower cavity plate descends and contacts the connecting seat, and improving the stability of the metal powder during injection molding.

[0015] A further improvement of the technical solution of the present invention is that: a hole is passed through the middle of the bottom surface of the rubber plug, and the hole passes through the lower cavity plate and the injection molding seat; a limiting post passing through the hole in the injection molding seat, the lower cavity plate and the rubber plug is fixedly installed at the four corners of the bottom surface of the top plate and connected to the upper surface of the sealing post.

[0016] A further improvement of the technical solution of the present invention is that: a hole is provided through the middle of the upper surface of the top plate, and the upper end of the telescopic column passes through the hole and is connected to the output end of the cylinder.

[0017] A further improvement of the technical solution of the present invention is that: one end of the powder entering the outer surface of the tube is sealed to one end of the conveying tube, and a cavity is set between the upper surface of the lower cavity plate and the bottom surface of the injection molding seat.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] This invention utilizes a powder conveying pump fixedly installed on the upper surface of a support column. When the pump is in operation, it draws the mixed metal powder from the feeding trough through a connecting pipe and feeds it into the conveying pipe to complete the feeding process for injection molding. A solenoid valve fixedly installed on one side of the outer surface of the conveying pipe controls the opening and closing of the channel in the conveying pipe according to the amount of metal powder required for one injection, thereby controlling the amount of metal powder fed into the injection molding process, avoiding waste or insufficient metal powder, and ensuring normal operation of the injection molding process.

[0020] This invention connects a lower cavity plate to the bottom surface of the injection molding base. A cavity is provided between the upper surface of the lower cavity plate and the bottom surface of the injection molding base, allowing the metal powder transported in the powder inlet tube to directly enter the cavity and exit through the discharge hole penetrating the bottom surface of the upper mold for injection molding. This avoids the metal powder from scattering and splashing during injection molding, preventing waste of metal powder. Furthermore, the metal powder can be directly processed in the mold through the discharge hole, thus improving injection molding efficiency.

[0021] This invention incorporates through holes in the injection molding seat, lower cavity plate, and bottom surface of the rubber plug, through which a limiting post is installed. This ensures that the injection molding seat maintains a stable descent path as it descends with the telescopic post. When the lower cavity plate contacts the upper surface of the connecting seat, the outer surface of the rubber plug contacts the sealing post, sealing the connection between the lower cavity plate and the connecting seat. Simultaneously, as the lower cavity plate continues to descend, it compresses the telescopic rod, thereby compressing the spring. This causes the spring and the telescopic rod to move in opposite directions, resulting in a tighter connection between the lower cavity plate and the connecting seat, thus improving the injection molding effect of metal powder. Attached Figure Description

[0022] Figure 1 A first-view structural schematic diagram of a metal powder injection molding equipment;

[0023] Figure 2 A second-view structural schematic diagram of a metal powder injection molding equipment;

[0024] Figure 3 A schematic diagram of the internal structure of the mixing tank in a metal powder injection molding equipment;

[0025] Figure 4 A schematic diagram of the mixing mechanism in a metal powder injection molding machine;

[0026] Figure 5 A schematic diagram of the conveying mechanism in a metal powder injection molding equipment;

[0027] Figure 6 A schematic diagram of the injection mechanism structure of a metal powder injection molding equipment;

[0028] Figure 7 A schematic diagram of the connection seat structure for a metal powder injection molding equipment;

[0029] Figure 8 A schematic diagram of the injection base structure for a metal powder injection molding equipment;

[0030] Figure 9 This is a schematic cross-sectional view of the injection base and connecting base of a metal powder injection molding equipment.

[0031] In the diagram: 1. Fixed base; 2. Supporting foot pads; 3. Fixing plate; 301. Baffle; 302. Mixing tank; 303. Mounting slot; 304. Observation window; 305. Handle; 306. Feeding column; 307. Cover plate; 4. Drive motor; 401. Transmission shaft; 402. Roller No. 1; 403. Belt; 404. Roller No. 2; 405. Connecting shaft; 406. Fixing block No. 1; 407. Fixing cylinder; 408. Connecting rod; 409. Fixing bolt; 410. Stirring blade; 411. Fixing block No. 2; 412. Protective cover; 5. Discharge trough; 501. Connecting pipe; 502. Support column; 503. Powder conveyor Pump; 504, delivery pipe; 505, solenoid valve; 6, fixed base; 601, column; 602, top plate; 603, cylinder; 604, telescopic column; 605, injection base; 606, lower cavity plate; 607, powder inlet pipe; 608, limit post; 609, fixing rod; 610, upper mold block; 611, discharge hole; 612, rubber plug; 613, connecting seat; 614, partition plate; 615, mounting plate; 616, sealing post; 617, compression spring; 618, telescopic rod; 619, mold base; 620, lower mold block; 621, vertical rod; 622, connector; 623, fixing pipe; 624, shock absorber. Detailed Implementation

[0032] 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.

[0033] 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.

[0034] 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.

[0035] Reference Figure 1 - Figure 9 This invention provides three technical solutions:

[0036] Example 1:

[0037] A metal powder injection molding equipment includes a fixed base 1 and a fixed plate 3. The fixed plate 3 is fixedly installed on both sides of the upper surface of the fixed base 1. A baffle 301 is fixedly installed on one side of the outer surface of the fixed plate 3. A mixing tank 302 is fixedly installed on one side of the outer surface of the baffle 301. A plurality of supporting feet 2 are provided on the bottom surface of the fixed base 1. An installation groove 303 is passed through one side of the outer surface of the mixing tank 302. An observation window 304 is snapped into the installation groove 303. A handle 305 is fixedly connected to one side of the outer surface of the observation window 304. A feed column 306 is fixedly installed on the upper part of the other side of the outer surface of the mixing tank 302. A cover plate 307 is snapped onto the upper surface of the feed column 306. A mixing mechanism is provided inside the mixing tank 302. A conveying mechanism is provided on one side of the outer surface of the mixing tank 302. An injection molding mechanism is provided at one end of the conveying fixed base 1.

[0038] The conveying mechanism includes a feeding trough 5 fixedly installed on the lower part of the outer surface of the mixing tank 302. A connecting pipe 501 is fixedly connected to one side of the outer surface of the feeding trough 5. A powder conveying pump 503 is fixedly connected to one end of the connecting pipe 501. A support column 502 is fixedly connected to the bottom surface of the powder conveying pump 503. A conveying pipe 504 is fixedly connected to one side of the upper part of the powder conveying pump 503. A solenoid valve 505 is fixedly connected to the outer surface of the conveying pipe 504.

[0039] The mixing mechanism includes a drive motor 4 fixedly mounted on one side of the upper surface of the fixed base 1. The output end of the drive motor 4 is connected to a transmission shaft 401. A first roller 402 is fixedly connected to one end of the transmission shaft 401. A belt 403 is connected to the outer surface of the first roller 402. A first fixing block 406 is fixedly connected to one side of the outer surface of the baffle 301. A connecting shaft 405 is rotatably connected to one side of the outer surface of the first fixing block 406. A second roller 404 is fixedly connected to one end of the connecting shaft 405. The outer surface of the second roller 404 is connected to the outer surface of the belt 403. The connecting shaft 405... A fixed cylinder 407 is fixedly connected to the other end. A connecting rod 408 is fixedly installed on the outer surface of the fixed cylinder 407. A fixing bolt 409 is fixedly connected to one side of the outer surface of the connecting rod 408. A stirring plate 410 is fixedly connected to one side of the outer surface of the connecting rod 408. The stirring plate 410 is connected to the connecting rod 408 by the fixing bolt 409. A protective cover 412 is snapped onto the outer surface of the first roller 402 and the second roller 404. A second fixing block 411 is fixedly connected to the other side of the outer surface of the mixing tank 302. One side of the outer surface of the second fixing block 411 is rotatably connected to one end of the fixed cylinder 407.

[0040] In this embodiment, metal powder is poured into the mixing tank 302 from the feed column 306. The power supply of the drive motor 4 is turned on, and the output end of the drive motor 4 drives the transmission shaft 401 to rotate. The transmission shaft 401 drives the first roller 402 to rotate, which in turn drives the belt 403 to rotate. This drives the second roller 404 connected to the other end of the belt 403 to rotate. The second roller 404 drives the connecting shaft 405 to rotate, which in turn drives the fixed cylinder 407 to rotate. This causes the connecting rod 408 and fixing bolt 409, which are fixedly installed on the outer surface of the fixed cylinder 407, to rotate, thus stirring and mixing the metal powder in the mixing tank 302. During stirring and mixing, the mixing effect in the mixing tank 302 is observed through the observation window 304. The stirred and mixed metal powder accumulates inside the feeding trough 5. The powder conveying pump 503 is operated to extract the metal powder accumulated in the feeding trough 5 through the connecting pipe 501 and pump it into the conveying pipe 504, which then enters the powder inlet pipe 607 for injection molding.

[0041] Example 2:

[0042] Based on Embodiment 1: The injection molding mechanism includes a fixing unit, an upper mold unit, and a lower mold unit. The fixing unit includes a fixing seat 6 disposed on one side of the outer surface of the fixing base 1. A column 601 is fixedly connected to the upper surface of the fixing seat 6. A top plate 602 is fixedly connected to the upper surface of the column 601. A cylinder 603 is fixedly installed at the middle position of the upper surface of the top plate 602. The output end of the cylinder 603 is connected to a telescopic column 604. An injection molding seat 605 is fixedly installed on the bottom surface of the telescopic column 604. A hole is passed through the middle position of the upper surface of the top plate 602. The upper end of the telescopic column 604 passes through the hole and is connected to the output end of the cylinder 603.

[0043] The upper mold unit includes a lower cavity plate 606 fixedly connected to the bottom surface of the injection molding base 605. A powder inlet pipe 607 is fixedly connected to one side of the outer surface of the lower cavity plate 606. A fixing rod 609 is fixedly installed in the middle of the bottom surface of the injection molding base 605. An upper mold block 610 is snapped onto the bottom surface of the lower cavity plate 606. A discharge hole 611 passes through the middle of the bottom surface of the upper mold block 610. Rubber plugs 612 are fixedly installed at the four corners of the bottom surface of the injection molding base 605. One end of the outer surface of the powder inlet pipe 607 is sealed to one end of the conveying pipe 504. A cavity is set between the upper surface of the lower cavity plate 606 and the bottom surface of the injection molding base 605.

[0044] The lower mold unit includes a mounting plate 615 fixedly installed on the upper surface of the fixed base 6. A partition plate 614 is fixedly connected to the upper surface of the mounting plate 615. A connecting base 613 is fixedly installed on the upper surface of the partition plate 614. Sealing posts 616 are fixedly installed at the four corners of the upper surface of the connecting base 613. A mold base 619 is fixedly installed on the upper surface of the connecting base 613. A lower mold block 620 is fixedly installed on the upper surface of the mold base 619. Multiple vertical rods 621 passing through the connecting base 613 are fixedly installed on the upper surface of the partition plate 614.

[0045] In this embodiment, the cylinder 603 is operated, and the output end of the cylinder 603 pushes the telescopic column 604 to descend. The telescopic column 604 drives the injection molding seat 605 and the lower cavity plate 606 to descend, so that the bottom surface of the lower cavity plate 606 contacts the upper surface of the connecting seat 613. At the same time, the rubber plug 612 moves with the lower cavity plate 606 and contacts the upper surface of the sealing column 616 to seal the connection between the lower cavity plate 606 and the connecting seat 613. The metal powder that enters the cavity between the lower cavity plate 606 and the injection molding seat 605 through the powder inlet pipe 607 is discharged through the discharge hole 611 penetrating the bottom surface of the upper mold block 610 for injection molding.

[0046] Example 3:

[0047] Based on Embodiment 1 and Embodiment 2: A compression spring 617 is fixedly connected to the upper surface of the partition 614, and a telescopic rod 618 is connected inside the compression spring 617. A shock absorber 624 is connected to the upper surface of the partition 614. A cavity is provided between the partition 614 and the connecting seat 613. A connector 622 is fixedly installed on one side of the outer surface of the partition 614, and a fixing tube 623 is sealed to the outer surface of the connector 622.

[0048] A hole is passed through the middle of the bottom surface of the rubber plug 612, and the hole passes through the lower cavity plate 606 and the injection molding seat 605. Limiting posts 608 are fixedly installed at the four corners of the bottom surface of the top plate 602, passing through the hole in the injection molding seat 605, the lower cavity plate 606 and the rubber plug 612, and connected to the upper surface of the sealing post 616.

[0049] In this embodiment, as the lower cavity plate 606 descends following the injection molding seat 605, it continues to move downwards after the bottom surface of the lower cavity plate 606 contacts the upper surface of the connecting seat 613, thus squeezing the connecting seat 613 and the telescopic rod 618. Subsequently, it squeezes the compression spring 617. The compression spring 617 generates a restoring elastic force under compression, which pushes the telescopic rod 618 in the opposite direction, pushing the connecting seat 613 upwards. This counteracts the vibration generated when the lower cavity plate 606 descends and contacts the connecting seat 613, thereby improving the stability of the metal powder during injection molding.

[0050] 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.

[0051] 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 metal powder injection molding equipment, comprising a fixed base (1) and a fixed plate (3), wherein the fixed plate (3) is fixedly installed on both sides of the upper surface of the fixed base (1), a baffle (301) is fixedly installed on one side of the outer surface of the fixed plate (3), a mixing tank (302) is fixedly installed on one side of the outer surface of the baffle (301), a plurality of supporting feet (2) are provided on the bottom surface of the fixed base (1), an installation groove (303) is passed through one side of the outer surface of the mixing tank (302), an observation window (304) is fastened in the installation groove (303), a handle (305) is fixedly connected to one side of the outer surface of the observation window (304), a feed column (306) is fixedly installed on the upper part of the other side of the outer surface of the mixing tank (302), and a cover plate (307) is snapped onto the upper surface of the feed column (306), characterized in that: The mixing tank (302) is internally provided with a mixing mechanism, the outer surface of the mixing tank (302) is provided with a conveying mechanism, one end of the conveying fixed base (1) is provided with an injection molding mechanism; The conveying mechanism comprises a discharging groove body (5) fixedly installed on the lower part of the outer surface of the mixing tank (302), one side of the outer surface of the discharging groove body (5) is fixedly connected with a connecting pipe (501), one end surface of the connecting pipe (501) is fixedly connected with a powder conveying pump (503), the bottom surface of the powder conveying pump (503) is fixedly connected with a supporting column (502), one side of the upper part of the powder conveying pump (503) is fixedly connected with a conveying pipe (504), and the outer surface of the conveying pipe (504) is fixedly connected with a solenoid valve (505).

2. A metal powder injection molding apparatus as defined in claim 1, wherein: The mixing mechanism comprises a driving motor (4) fixedly installed on one side of the upper surface of the fixed base (1), the output end of the driving motor (4) is connected with a transmission shaft (401), one end surface of the transmission shaft (401) is fixedly connected with a first roller (402), the outer surface of the first roller (402) is connected with a belt (403), one side of the outer surface of the baffle (301) is fixedly connected with a first fixed block (406), one side of the outer surface of the first fixed block (406) is rotatably connected with a connecting shaft (405), one end surface of the connecting shaft (405) is fixedly connected with a second roller (404), the outer surface of the second roller (404) is connected with the outer surface of the belt (403), the other end of the connecting shaft (405) is fixedly connected with a fixed cylinder (407), the outer surface of the fixed cylinder (407) is fixedly installed with a connecting rod (408), one side of the outer surface of the connecting rod (408) is fixedly connected with a fixed bolt (409), one side of the outer surface of the connecting rod (408) is fixedly connected with a stirring blade (410), the stirring blade (410) is connected with the connecting rod (408) through the fixed bolt (409), the outer surfaces of the first roller (402) and the second roller (404) are clamped with a protective cover (412), the other side of the outer surface of the mixing tank (302) is fixedly connected with a second fixed block (411), and one side of the outer surface of the second fixed block (411) is rotatably connected with one end surface of the fixed cylinder (407).

3. The metal powder injection molding apparatus of claim 1, wherein: The injection molding mechanism comprises a fixed unit, an upper mold unit and a lower mold unit, the fixed unit comprises a fixed seat (6) arranged on one side of the outer surface of the fixed base (1), the upper surface of the fixed seat (6) is fixedly connected with a stand column (601), the upper surface of the stand column (601) is fixedly connected with a top plate (602), the upper surface of the top plate (602) is fixedly installed with an air cylinder (603), the output end of the air cylinder (603) is connected with a telescopic column (604), and the bottom surface of the telescopic column (604) is fixedly installed with an injection molding seat (605).

4. A metal powder injection molding apparatus as defined in claim 3, wherein: The upper mold unit includes a lower cavity plate (606) fixedly connected to the bottom surface of the injection seat (605), one side of the outer surface of the lower cavity plate (606) is fixedly connected with a powder inlet pipe (607), the middle position of the bottom surface of the injection seat (605) is fixedly installed with a fixed rod (609), the bottom surface of the lower cavity plate (606) is clamped with an upper mold block (610), the middle position of the bottom surface of the upper mold block (610) penetrates a discharging hole (611), and the bottom surface of the injection seat (605) is fixedly installed with rubber plugs (612) at the four corner positions.

5. A metal powder injection molding apparatus as defined in claim 3, wherein: The lower mold unit includes an installation plate (615) fixedly installed on the upper surface of the fixed seat (6), the upper surface of the installation plate (615) is fixedly connected with a partition plate (614), the upper surface of the partition plate (614) is fixedly installed with a connecting seat (613), the upper surface of the connecting seat (613) is fixedly installed with sealing columns (616) at the four corner positions, the upper surface of the connecting seat (613) is fixedly installed with a mold seat (619), the upper surface of the mold seat (619) is fixedly installed with a lower mold block (620), and the upper surface of the partition plate (614) is fixedly installed with a plurality of vertical rods (621) penetrating the connecting seat (613).

6. A metal powder injection molding apparatus as defined in claim 5, wherein: The partition plate (614) is fixedly connected with a compression spring (617) on the upper surface, the compression spring (617) is internally connected with a telescopic rod (618), the upper surface of the partition plate (614) is connected with a shock absorber (624), a cavity is arranged between the partition plate (614) and the connecting seat (613), the outer surface of the partition plate (614) is fixedly installed with a connecting head (622) on one side, and the outer surface of the connecting head (622) is sealingly connected with a fixed pipe (623).

7. A metal powder injection molding apparatus as defined in claim 4, wherein: The bottom surface of the rubber plug (612) penetrates a hole, and the hole penetrates the lower cavity plate (606) and the injection seat (605), the bottom surface of the top plate (602) is fixedly installed with a limiting column (608) penetrating the hole in the injection seat (605) and the lower cavity plate (606) and the rubber plug (612), and the limiting column (608) is connected with the upper surface of the sealing column (616).

8. A metal powder injection molding apparatus as defined in claim 3, wherein: The upper surface of the top plate (602) penetrates a hole, and the upper end of the telescopic column (604) penetrates the hole and is connected with the output end of the air cylinder (603).

9. A metal powder injection molding apparatus as defined in claim 4, wherein: The outer surface of the powder inlet pipe (607) is sealingly connected with one end of the conveying pipe (504), and a cavity is arranged between the upper surface of the lower cavity plate (606) and the bottom surface of the injection seat (605).

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