Metal powder injection molding die

Abstract

The invention discloses a metal powder injection molding mold, and relates to the technical field of injection molds. The mold comprises a fixed disc mold and a movable disc mold which are coaxially arranged, a plurality of evenly-distributed forming mold cavities are formed in the sides, close to each other, of the fixed disc mold and the movable disc mold, and a plurality of evenly-distributed circulating grooves are formed in the side wall of the fixed disc mold; a plurality of evenly-distributed circulation sliding holes are formed in the side wall of the disc movable mold, and the multiple forming mold cavities and the multiple circulation sliding holes are located between the multiple forming mold cavities correspondingly. Through the arrangement of the disc fixed mold and the disc movable mold, after injection is completed, the rotary motor on the injection machine drives the disc fixed mold and the disc movable mold to synchronously rotate at a high speed, and a mixture rapidly flows in each forming mold cavity until the mixture is uniformly mixed; and the problems of non-uniform distribution and layering of the mixture in the forming die cavity due to factors such as gravity and shape are effectively prevented.

Description

Technical Field

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

[0002] MIM (Metal Injection Molding) is a molding method that involves injecting a plasticized mixture of metal powder and its binder into a mold. MIM first mixes the selected powder with the binder, then granulates the mixture before injection molding it into the desired shape. It combines the flexibility of injection molding design with the high strength and integrity of precision metal to achieve a low-cost solution for extremely complex geometric parts. The MIM process consists of four unique processing steps (mixing, molding, debinding, and sintering) to produce parts, and the need for surface treatment is determined based on the characteristics of the product.

[0003] Existing metal injection molding machines feed granular raw materials into the machine, heat them, and inject them into the mold cavity under high pressure. After cooling to form a rough mold, the material is demolded. However, during this process, the metal powder and binder may experience uneven distribution and delamination due to factors such as gravity and shape, resulting in inconsistent molding quality of the blanks. To address this, a metal powder injection molding die is proposed. Summary of the Invention

[0004] The purpose of this invention is to solve the problem that, during the injection process of existing metal injection molding machines, metal powder and binder may exhibit uneven distribution and delamination due to factors such as gravity and shape, resulting in inconsistent molding quality of the blanks. This invention provides a metal powder injection molding die.

[0005] To achieve the above objectives, the present invention specifically adopts the following technical solution: A metal powder injection molding die includes a coaxially arranged disk-shaped fixed die and disk-shaped movable die. The disk-shaped fixed die and the disk-shaped movable die each have multiple evenly distributed molding cavities on their adjacent sides. The side wall of the disk-shaped fixed die has multiple evenly distributed flow grooves, and the side wall of the disk-shaped movable die has multiple evenly distributed flow sliding holes. The multiple molding cavities and the multiple flow sliding holes are located between the multiple molding cavities, and each molding cavity and each flow sliding hole communicates with two adjacent molding cavities. The side walls of the disk-shaped fixed die and the disk-shaped movable die each have corresponding injection sliding holes and injection docking holes. An injection port is provided on the other side of the moving disc mold, and the injection port is connected to the injection docking hole. An assembly plate is fixedly installed on the other side of the fixed disc mold. The injection sliding hole passes through the assembly plate, and a sealing sliding column is slidably installed inside the injection sliding hole. A first push rod suspension is fixedly installed on the side wall of the assembly plate, and a horizontally arranged sealing electric push rod is fixedly installed on the first push rod suspension. One end of the sealing sliding column extends to one side of the assembly plate and is fixedly connected to the telescopic end of the sealing electric push rod. A rotating shaft assembly groove is provided on the side wall of the assembly plate. An inner turntable is rotatably installed on the other side of the moving disc mold, and a pressure rod assembly frame is fixedly installed on one side of the inner turntable.

[0006] Furthermore, a plurality of evenly distributed locking pins are fixedly installed on the side of the moving disc mold close to the fixed disc mold, and a plurality of locking grooves adapted to the locking pins are opened on one side of the fixed disc mold. Annular corrugated assembly grooves adapted to each other are opened on the sides of the fixed disc mold and the moving disc mold that are close to each other.

[0007] Furthermore, each of the flow-through holes is slidably fitted with an isolation slider that is compatible with the flow groove. On the side of the disc moving mold away from the disc fixed mold, a plurality of evenly distributed second push rod suspensions are fixedly installed. Each of the second push rod suspensions is fixedly installed with a horizontally arranged isolation electric push rod. The telescopic ends of the plurality of isolation electric push rods are fixedly installed with the same control ring. The plurality of isolation sliders are fixedly connected to the control ring.

[0008] Furthermore, an electric heater is fixedly installed on one side of the disc moving mold, and multiple evenly distributed heating elements are fixedly installed on the control ring. The multiple heating elements are electrically connected to the electric heater, and the multiple heating elements are in contact with the multiple isolation sliders respectively.

[0009] Furthermore, each of the molding cavities has a stamped sliding hole, and a stamped post is slidably installed inside each of the stamped sliding holes. Multiple evenly distributed third push rod suspensions are fixedly installed on one side of the assembly plate. A horizontally arranged electric push rod for unloading is fixedly installed on each of the third push rod suspensions. The telescopic ends of the multiple electric push rods for unloading are fixedly installed with the same C-shaped control plate. One end of each of the multiple stamped posts extends to one side of the assembly plate and is fixedly connected to the C-shaped control plate.

[0010] Furthermore, a plurality of venting grooves are provided on one side of the fixed disc mold, and the plurality of venting grooves are respectively connected to the interior of the plurality of forming cavities. A plurality of mating strips adapted to the venting grooves are fixedly installed on one side of the moving disc mold. A plurality of evenly distributed venting holes are provided on the side wall of the moving disc mold, and the plurality of venting holes are respectively corresponding to the positions of the plurality of mating strips.

[0011] Furthermore, a lifting platform is provided below the disc mold, and an electric rotating seat is fixedly installed at the telescopic end of the lifting platform. A positioning roller is rotatably installed on the top of the electric rotating seat.

[0012] Furthermore, both the fixed die and the moving die of the disc are provided with positioning slots at their bottoms that are compatible with the positioning roller.

[0013] The beneficial effects of this invention are as follows: 1. By setting up a fixed disc mold and a moving disc mold, the present invention enables the rotary motor on the injection molding machine to drive the fixed disc mold and the moving disc mold to operate synchronously at high speed after injection. The mixture flows rapidly in each molding cavity until it is evenly mixed, effectively preventing the mixture from being unevenly distributed or layered in the molding cavity due to gravity, shape and other factors. 2. By setting up isolation sliders, after rotating for a sufficient time, the isolation electric push rod drives each isolation slider to completely block the flow channel, thereby separating each molding cavity, completing the shaping of the parts, and compressing the mixture, so that the molding cavity can adapt to the volume shrinkage caused by the reduced spacing after the mixture cools down. At the same time, the electric heater heats the isolation sliders through each heating element, so that the mixture around the isolation sliders still maintains a certain fluidity, thereby facilitating the execution of the isolation action of the isolation sliders. 3. This invention, by setting steel stamp pillars, after the isolation is completed, the electric heater stops heating, the fixed disk mold and the moving disk mold stop rotating, and the mixture inside the forming cavity cools and solidifies. The inner end of the steel stamp pillar will leave a rough steel stamp on the blank to identify the production batch. At the same time, when the fixed disk mold and the moving disk mold open, the material feeding electric push rod synchronously drives the C-shaped control plate, thereby driving each steel stamp pillar to slide into the forming cavity, thereby pushing the blank that failed to automatically demold to fall off, speeding up the feeding speed, and then the steel stamp pillar is reset. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a first-view three-dimensional structural diagram of the cooperation between the fixed disk mold and the moving disk mold of the present invention; Figure 3 This is a second-view three-dimensional structural diagram of the cooperation between the fixed disk mold and the moving disk mold of the present invention; Figure 4 This is a first-view three-dimensional structural diagram of the cooperation between the disc mold and the assembly disc of the present invention; Figure 5 This is the present invention. Figure 4 Schematic diagram of the structure at point A in the middle; Figure 6 This is a second-view three-dimensional structural diagram of the cooperation between the disc mold and the assembly disc of the present invention; Figure 7 This is a first-view three-dimensional structural diagram of the circular moving mold of the present invention; Figure 8 This is the present invention. Figure 7 Schematic diagram of the structure at point B; Figure 9 This is a two-dimensional structural diagram of the disc-shaped moving mold of the present invention from a second perspective; Figure 10 This is a three-dimensional structural diagram of the cooperation between the lifting platform and the positioning roller of the present invention; Figure 11 This is a three-dimensional structural diagram of the finished component of the present invention; Reference numerals: 1. Circular fixed mold; 101. Molding cavity; 102. Flow groove; 103. Injection slide hole; 104. Annular corrugated assembly groove; 105. Locking groove; 106. Venting groove; 107. Positioning slot; 2. Circular moving mold; 201. Inner turntable; 202. Flow slide hole; 203. Injection port; 204. Injection mating hole; 205. Venting hole; 3. Assembly plate; 301. Rotary shaft assembly groove; 4. First push 5. Sealing electric push rod; 6. Sealing slide column; 7. Pressure rod assembly frame; 8. Locking column; 9. Isolation slider; 10. Second push rod suspension; 11. Isolation electric push rod; 12. Control ring; 13. Electric heater; 14. Heating element; 15. Steel stamp column; 16. Third push rod suspension; 17. Material unloading electric push rod; 18. C-shaped control panel; 19. Mating strip; 20. Lifting platform; 21. Electric rotating seat; 22. Positioning roller. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0016] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0017] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0018] In the description of the embodiments of the present invention, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the present invention.

[0019] like Figures 1 to 10 As shown, a metal powder injection molding die includes a fixed disc mold 1 and a movable disc mold 2 arranged coaxially, as... Figure 1 , Figure 3 As shown, an assembly plate 3 is fixedly installed on the other side of the fixed disc mold 1. The side wall of the assembly plate 3 is provided with a rotating shaft assembly groove 301 for connecting the fixed disc mold 1 to the drive end of the rotary motor. An inner turntable 201 is rotatably installed on the other side of the moving disc mold 2. A pressure rod assembly frame 7 for connecting the moving disc mold 2 to the drive end of the hydraulic mechanism is fixedly installed on one side of the inner turntable 201.

[0020] More specifically, when the metal powder injection molding die is used, the assembly plate 3 is rotatably mounted on the injection molding machine, and the rotating shaft assembly groove 301 on the assembly plate 3 is driven and connected to the output end of the rotary motor on the injection molding machine. At the same time, the pressure rod assembly frame 7 is fixedly connected to the drive end of the hydraulic mechanism of the injection molding machine, so that the disc moving mold 2 is rotatably connected to the hydraulic push end of the injection molding machine.

[0021] like Figure 1 , Figure 10 As shown, specifically, a lifting platform 20 is provided below the fixed disc mold 1, an electric rotating seat 21 is fixedly installed at the telescopic end of the lifting platform 20, a positioning roller 22 is rotatably installed on the top of the electric rotating seat 21, and positioning slots 107 adapted to the positioning roller 22 are opened at the bottom of both the fixed disc mold 1 and the moving disc mold 2.

[0022] In this embodiment, the lifting platform 20 is a common linear lifting mechanism in the prior art, such as a lifting platform 20 driven by power components such as electric push rods, hydraulic rods, cylinders, and linear modules, or a cross scissor lifting mechanism driven by electric, pneumatic, or hydraulic pressure. The electric rotating seat 21 is equipped with a rotary motor, which controls the rotation of the positioning roller 22 through a gear structure and a drive shaft. The electric rotating seat 21 is equipped with a pressure sensor, which is used to monitor the radial pressure of the positioning roller 22 and its drive shaft in real time, thereby determining the relative position of the positioning roller 22 and the positioning slot 107 by the pressure change.

[0023] More specifically, by setting the positioning roller 22 and the positioning slot 107, before injection, the lifting platform 20 drives the electric rotating seat 21 to rise. When the positioning roller 22 contacts and presses against the bottom outer ring side wall of the disc fixed mold 1, the electric rotating seat 21 drives the disc fixed mold 1 to start rotating through the positioning roller 22 until the positioning roller 22 enters the positioning slot 107, thereby completing the positioning of the disc fixed mold 1. Similarly, the lifting platform 20 descends, and the disc moving mold 2 moves to one side of the disc fixed mold 1 under the drive of the hydraulic mechanism, so that one end of the positioning roller 22 is below the disc moving mold 2. At this time, the lifting platform 20 rises again, so that the positioning roller 22 contacts and drives the disc moving mold 2 to rotate, positioning the disc moving mold 2, so that the disc fixed mold 1 can be accurately assembled with the disc moving mold 2, effectively preventing misalignment.

[0024] like Figure 4 , Figure 7 As shown, specifically, a plurality of evenly distributed locking pins 8 are fixedly installed on the side of the moving disc mold 2 near the fixed disc mold 1, and a plurality of locking grooves 105 adapted to the locking pins 8 are opened on one side of the fixed disc mold 1. Annular corrugated assembly grooves 104 adapted to each other are opened on the side of the fixed disc mold 1 and the moving disc mold 2 that are close to each other.

[0025] More specifically, by setting the annular corrugated assembly groove 104, after the fixed disk mold 1 and the moving disk mold 2 are aligned, the hydraulic mechanism drives the moving disk mold 2 to move back to the fixed disk mold 1 until the two are fully engaged. At this time, the locking pins 8 on the moving disk mold 2 are inserted into the respective locking grooves 105. The annular corrugated assembly grooves 104 on the fixed disk mold 1 and the moving disk mold 2 match each other. The locking pins 8 can effectively prevent misalignment when the fixed disk mold 1 and the moving disk mold 2 rotate at high speed. While sharing the load on the locking pins 8, the annular corrugated assembly groove 104 can effectively improve the sealing performance after the fixed disk mold 1 and the moving disk mold 2 are engaged.

[0026] like Figure 4 , Figure 5 As shown, specifically, both the fixed disk mold 1 and the moving disk mold 2 have multiple evenly distributed molding cavities 101 on their adjacent sides, and the fixed disk mold 1 has multiple evenly distributed flow grooves 102 on its side wall, such as... Figure 7 , Figure 8 As shown, the sidewall of the disc-shaped moving mold 2 has multiple evenly distributed flow holes 202. Multiple molding cavities 101 and multiple flow holes 202 are located between the multiple molding cavities 101. The molding cavities 101 and the flow holes 202 are respectively connected to two adjacent molding cavities 101. The sidewalls of the disc-shaped fixed mold 1 and the disc-shaped moving mold 2, which are close to each other, have corresponding injection holes 103 and injection docking holes 204, as shown. Figure 9 As shown, an injection port 203 is provided on the other side of the disc-shaped moving mold 2. The injection port 203 is connected to the injection docking hole 204, as shown. Figure 3 , Figure 6 As shown, the injection slide hole 103 penetrates the assembly plate 3, and a sealing slide column 6 is slidably installed inside the injection slide hole 103. A first push rod suspension 4 is fixedly installed on the side wall of the assembly plate 3, and a horizontally arranged sealing electric push rod 5 is fixedly installed on the first push rod suspension 4. One end of the sealing slide column 6 extends to one side of the assembly plate 3 and is fixedly connected to the telescopic end of the sealing electric push rod 5.

[0027] More specifically, by setting up a fixed disc mold 1 and a movable disc mold 2, after the two are engaged, the nozzle of the injection molding machine is sent into the injection port 203 and connected to the fully engaged injection sliding hole 103 and injection docking hole 204. Then, the mixture is conveyed into the interior. The mixture flows from the uppermost molding cavity 101 into each molding cavity 101 through the flow channels 102 on both sides, completing the batch injection. Then, the sealing electric push rod 5, in conjunction with the nozzle withdrawal, drives the sealing slide 6 to slide into the injection docking hole 204 until the sealing slide 6 is inserted into the injection docking hole 204, completely sealing the injection sliding hole 103 and injection docking hole 204, completing the injection. At this time, the rotary motor on the injection molding machine drives the fixed disc mold 1 and the movable disc mold 2 to rotate synchronously at high speed. The mixture flows rapidly in each molding cavity 101 until it is mixed evenly, effectively preventing the mixture from being unevenly distributed or layered in the molding cavity 101 due to gravity, shape and other factors.

[0028] like Figure 5 , Figure 8 As shown, specifically, a plurality of venting grooves 106 are provided on one side of the fixed disc mold 1, and the plurality of venting grooves 106 are respectively connected to the interior of a plurality of forming cavities 101. A plurality of mating strips 19 adapted to the venting grooves 106 are fixedly installed on one side of the moving disc mold 2. A plurality of evenly distributed venting holes 205 are provided on the side wall of the moving disc mold 2, and the plurality of venting holes 205 correspond to the positions of the plurality of mating strips 19.

[0029] In this embodiment, the vent 205 is provided with an air film for intercepting the mixture, in order to further prevent the mixture from leaking.

[0030] More specifically, by setting the mating strip 19, when the fixed mold 1 and the moving mold 2 are mated, the mating strip 19 will be respectively engaged in the venting groove 106, and the venting groove 106 will be in the position of docking with the venting hole 205. The mating gap between the mating strip 19 and the venting groove 106 is sufficient to intercept the mixture and prevent the mixture from leaking, thereby playing a one-way venting role, so that the gas inside the molding cavity 101 can be discharged from each venting hole 205 during the injection and rotation mixing process.

[0031] like Figure 2 , Figure 9 As shown, specifically, each of the flow-through holes 202 has an isolation slider 9 that is adapted to the flow groove 102 slidably installed inside. On the side of the moving disc mold 2 away from the fixed disc mold 1, multiple evenly distributed second push rod suspensions 10 are fixedly installed. Each of the second push rod suspensions 10 has a horizontally arranged isolation electric push rod 11 fixedly installed on it. The telescopic ends of the multiple isolation electric push rods 11 are fixedly installed with the same control ring 12. The multiple isolation sliders 9 are all fixedly connected to the control ring 12.

[0032] More specifically, by setting isolation sliders 9, after the fixed disk mold 1 and the moving disk mold 2 have rotated at high speed for a sufficient time, the isolation electric push rod 11 synchronously drives the control ring 12 to move, thereby driving each isolation slider 9 to slide in the flow channel 202 until the flow channel 102 is completely blocked, thereby separating each molding cavity 101, completing the shaping of the parts, and compressing the mixture, so that the molding cavity 101 can adapt to the volume shrinkage caused by the interval reduction after the mixture cools down.

[0033] like Figure 2 As shown, specifically, an electric heater 13 is fixedly installed on one side of the disc moving mold 2, and multiple evenly distributed heating elements 14 are fixedly installed on the control ring 12. The multiple heating elements 14 are electrically connected to the electric heater 13, and the multiple heating elements 14 are in contact with multiple isolation sliders 9 respectively.

[0034] More specifically, by setting up the electric heater 13, while the isolation slider 9 separates the molding cavity 101, the electric heater 13 heats the isolation slider 9 through each heating element 14, so that the mixture around the isolation slider 9 still maintains a certain fluidity, thereby facilitating the execution of the isolation action of the isolation slider 9.

[0035] like Figure 3 , Figure 5 , Figure 6 As shown, specifically, each molding cavity 101 has a steel stamp sliding hole, and a steel stamp post 15 is slidably installed inside each steel stamp sliding hole. Multiple evenly distributed third push rod suspensions 16 are fixedly installed on one side of the assembly plate 3. Horizontally arranged electric push rods 17 for unloading are fixedly installed on each of the third push rod suspensions 16. The telescopic ends of multiple electric push rods 17 for unloading are fixedly installed with the same C-shaped control plate 18. One end of each of the multiple steel stamp posts 15 extends to one side of the assembly plate 3 and is fixedly connected to the C-shaped control plate 18.

[0036] More specifically, by setting the steel stamp pillars 15, when the isolation is completed, the electric heater 13 stops heating, the fixed disk mold 1 and the moving disk mold 2 stop rotating, the mixture inside the forming cavity 101 cools and solidifies, and the inner end of the steel stamp pillar 15 leaves a rough steel stamp on the blank to identify the production batch. At the same time, when the fixed disk mold 1 and the moving disk mold 2 open, the material feeding electric push rod 17 synchronously drives the C-shaped control plate 18, thereby driving each steel stamp pillar 15 to slide into the forming cavity 101, thereby pushing the blank that failed to automatically demold to fall off, speeding up the feeding speed, and then the steel stamp pillar 15 resets.

[0037] In summary: Before injection: The assembly plate 3 is rotatably mounted on the injection molding machine. Then, the rotating shaft assembly groove 301 on the assembly plate 3 is connected to the output end of the rotary motor on the injection molding machine. At the same time, the pressure rod assembly frame 7 is fixedly connected to the drive end of the hydraulic mechanism of the injection molding machine, so that the disc moving mold 2 is rotatably connected to the hydraulic push end of the injection molding machine. The lifting platform 20 drives the electric rotating seat 21 to rise. When the positioning roller 22 contacts and presses against the bottom outer ring side wall of the disc fixed mold 1, the electric rotating seat 21 drives the disc fixed mold 1 to start rotating through the positioning roller 22 until the positioning roller 22 enters the positioning slot 107, thus completing the disc... Similarly, when the fixed mold 1 is positioned, the lifting platform 20 descends, and the disc moving mold 2 moves to one side of the disc fixed mold 1 under the drive of the hydraulic mechanism, so that one end of the positioning roller 22 is below the disc moving mold 2. At this time, the lifting platform 20 rises again, so that the positioning roller 22 contacts and drives the disc moving mold 2 to rotate, positioning the disc moving mold 2. The hydraulic mechanism drives the disc moving mold 2 to move back to the disc fixed mold 1 until the two are fully engaged. At this time, the locking pins 8 on the disc moving mold 2 are inserted into the locking slots 105 respectively, and the annular corrugated assembly slots 104 on the disc fixed mold 1 and the disc moving mold 2 match each other. During injection: The nozzle of the injection machine is fed into the injection port 203 and connects with the fully fitted injection slide hole 103 and injection docking hole 204. Then, the mixture is conveyed into the interior. The mixture flows from the uppermost molding cavity 101 into each molding cavity 101 through the flow channels 102 on both sides, completing the batch injection. Then, the sealing electric push rod 5, in conjunction with the nozzle withdrawal, drives the sealing slide 6 to slide into the injection docking hole 204 until the sealing slide 6 is inserted into the injection docking hole 204, completely sealing the injection slide hole 103 and injection docking hole 204, thus completing the injection. After injection: The rotary motor on the injection molding machine drives the fixed disk mold 1 and the moving disk mold 2 to rotate synchronously at high speed. The mixture flows rapidly in each molding cavity 101 until it is evenly mixed. After the fixed disk mold 1 and the moving disk mold 2 have rotated at high speed for a sufficient time, the isolation electric push rod 11 synchronously drives the control ring 12 to move, thereby driving each isolation slider 9 to slide in the flow channel 202 until the flow channel 102 is completely blocked, thus separating each molding cavity 101, completing the shaping of the part, and compressing the mixture. When the isolation is complete... After the process is complete, the electric heater 13 stops heating, the fixed disk mold 1 and the moving disk mold 2 stop rotating, the mixture inside the forming cavity 101 cools and solidifies, and the inner end of the steel stamp 15 leaves a rough steel stamp on the blank to identify the production batch. At the same time, when the fixed disk mold 1 and the moving disk mold 2 open, the discharge electric push rod 17 synchronously drives the C-shaped control plate 18, thereby driving each steel stamp 15 to slide into the forming cavity 101, thereby pushing the blank that failed to automatically demold to fall off, speeding up the discharge speed, and then the steel stamp 15 resets.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A metal powder injection molding die, characterized in that, The device includes a fixed disc mold (1) and a movable disc mold (2) arranged coaxially. The fixed disc mold (1) and the movable disc mold (2) each have multiple uniformly distributed molding cavities (101) on their adjacent sides. The fixed disc mold (1) has multiple uniformly distributed flow grooves (102) on its sidewall, and the movable disc mold (2) has multiple uniformly distributed flow sliding holes (202) on its sidewall. The multiple molding cavities (101) and the multiple flow sliding holes (202) are located between the multiple molding cavities (101). The molding cavities (101) and the flow sliding holes (202) are respectively connected to two adjacent molding cavities (101). The fixed disc mold (1) and the movable disc mold (2) each have corresponding injection sliding holes (103) and injection docking holes (204) on their adjacent sidewalls. The movable disc mold (2) has another... An injection port (203) is provided on one side, and the injection port (203) is connected to the injection docking hole (204). An assembly plate (3) is fixedly installed on the other side of the disc fixed mold (1). The injection sliding hole (103) passes through the assembly plate (3). A sealing sliding column (6) is slidably installed inside the injection sliding hole (103). A first push rod suspension (4) is fixedly installed on the side wall of the assembly plate (3). A horizontally arranged sealing electric push rod (5) is fixedly installed on the first push rod suspension (4). One end of the sealing sliding column (6) extends to one side of the assembly plate (3) and is fixedly connected to the telescopic end of the sealing electric push rod (5). A rotating shaft assembly groove (301) is provided on the side wall of the assembly plate (3). An inner turntable (201) is rotatably installed on the other side of the disc moving mold (2). A pressure rod assembly frame (7) is fixedly installed on one side of the inner turntable (201).

2. The metal powder injection molding die according to claim 1, characterized in that, The moving disc mold (2) has a plurality of evenly distributed locking pins (8) fixedly installed on the side of the moving disc mold (1) near the fixed disc mold (1). The fixed disc mold (1) has a plurality of locking grooves (105) adapted to the locking pins (8) on one side. The fixed disc mold (1) and the moving disc mold (2) are both provided with mutually adapted annular corrugated assembly grooves (104) on the side of the moving disc mold (2) that are close to each other.

3. The metal powder injection molding die according to claim 1, characterized in that, The interior of each flow passage (202) is slidably fitted with an isolation slider (9) that is compatible with the flow groove (102). The side of the moving mold (2) away from the fixed mold (1) of the disc is fixedly fitted with a plurality of evenly distributed second push rod suspensions (10). Each of the second push rod suspensions (10) is fixedly fitted with a horizontally arranged isolation electric push rod (11). The telescopic ends of the plurality of isolation electric push rods (11) are fixedly fitted with the same control ring (12). The plurality of isolation sliders (9) are fixedly connected to the control ring (12).

4. A metal powder injection molding die according to claim 3, characterized in that, A heater (13) is fixedly installed on one side of the disc moving mold (2), and a plurality of uniformly distributed heating elements (14) are fixedly installed on the control ring (12). The plurality of heating elements (14) are electrically connected to the heater (13), and the plurality of heating elements (14) are in contact with the plurality of isolation sliders (9).

5. A metal powder injection molding die according to claim 1, characterized in that, The mold cavity (101) is provided with a steel stamp sliding hole, and a steel stamp column (15) is slidably installed inside the steel stamp sliding hole. Multiple evenly distributed third push rod suspensions (16) are fixedly installed on one side of the assembly plate (3). A horizontally arranged unloading electric push rod (17) is fixedly installed on each of the third push rod suspensions (16). The telescopic ends of the multiple unloading electric push rods (17) are fixedly installed with the same C-shaped control plate (18). One end of each of the multiple steel stamp columns (15) extends to one side of the assembly plate (3) and is fixedly connected to the C-shaped control plate (18).

6. A metal powder injection molding die according to claim 1, characterized in that, The fixed disc mold (1) has multiple venting grooves (106) on one side, and the multiple venting grooves (106) are respectively connected to the interior of the multiple forming cavities (101). The movable disc mold (2) has multiple mating strips (19) that are adapted to the venting grooves (106) fixedly installed on one side. The movable disc mold (2) has multiple evenly distributed venting holes (205) on its side wall, and the multiple venting holes (205) are respectively positioned corresponding to the positions of the multiple mating strips (19).

7. A metal powder injection molding die according to claim 1, characterized in that, A lifting platform (20) is provided below the disc mold (1). An electric rotating seat (21) is fixedly installed at the telescopic end of the lifting platform (20). A positioning roller (22) is rotatably installed on the top of the electric rotating seat (21).

8. A metal powder injection molding die according to claim 7, characterized in that, The bottom of both the fixed disc mold (1) and the moving disc mold (2) are provided with positioning slots (107) that are compatible with the positioning roller (22).

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