High-permeability soft magnetic injection molding part and production process thereof
The coordination of the preheating and vibration mechanisms driven by servo motors solves the problem of uneven material fluidity during the soft magnetic injection molding process, achieves uniform preheating and mixing of soft magnetic materials, and improves the magnetic permeability and consistency of the finished product.
Patent Information
- Application Number
- CN202510952447.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-10
- Publication Date
- 2025-09-12
AI Technical Summary
During the soft magnetic injection molding process, the fluidity of the soft magnetic material in the center area is higher than that of the surrounding area, which causes the microstructure of the finished product to be distorted, affecting the magnetic permeability. In addition, the uniformity of the soft magnetic material in the injection molding machine is difficult to ensure, which may lead to an increase in voids and the power required for hot melting.
The preheating mechanism and vibration mechanism driven by a servo motor are used to preheat the soft magnetic particles through the preheating plate and use an air pump to blow air to assist in blanking. At the same time, an electromagnet is used to orient the fluid soft magnetic material, and combined with the mixing of the stirring rod, it ensures that the soft magnetic particles are evenly mixed before injection molding.
The uniform preheating and mixing of soft magnetic materials is achieved, the magnetic permeability of the finished product is improved, the power required for hot melting is reduced, the generation of voids in the finished product is avoided, and the consistency of the finished product is ensured.
Smart Images
Figure CN120620548A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of soft magnetic injection molding, in particular to a high magnetic permeability soft magnetic injection molding part and a production process thereof. Background Art
[0002] Soft magnetic injection molding technology is an advanced technology that combines soft magnetic materials with plastic matrices to manufacture complex-shaped magnetic components through injection molding. It combines the high magnetic permeability and low loss characteristics of soft magnetic materials with the high efficiency and flexibility of the injection molding process. It is widely used in electronics, energy, automobiles and other fields. It forms a complex three-dimensional structure through high-temperature and high-pressure injection molding. The soft magnetic particles are oriented in the magnetic field or flow field to optimize the magnetic circuit performance.
[0003] However, during the actual application process, technicians found that the soft magnetic material flowing out of the injection molding head has a higher fluidity in the center than in the surrounding areas because the center temperature is higher than the surrounding temperature. This will cause the center area of the final product to be distorted in the microstructure, which will significantly affect the magnetic permeability of the finished product.
[0004] In addition, when the soft magnetic material is put into the injection molding machine, it is necessary to ensure that the soft magnetic material enters the injection molding machine evenly to avoid the generation of gaps inside the injection molded parts, and to preheat the soft magnetic material to avoid the need to use higher power when hot-melting the soft magnetic material later. The soft magnetic material is oriented by using electromagnets during injection molding to improve the magnetic permeability of the soft magnetic material molding. Summary of the Invention
[0005] In order to solve the problems raised in the above background technology, the present invention provides a high magnetic permeability soft magnetic injection molded part and a production process thereof.
[0006] To achieve the above objectives, the present invention provides the following technical solution: a high-permeability soft magnetic injection molded part, comprising an injection molding base, an injection molding device fixed to the top of the injection molding base, a mixing cylinder fixed to the top of the injection molding device, an orienter mounted on the outside of the injection molding device, a servo motor fixed to the top of the mixing cylinder, a preheating mechanism fixed to the bottom of the servo motor, a vibration mechanism provided at one end of the preheating mechanism, and a mixing mechanism provided at one end of the preheating mechanism; The preheating mechanism includes an air pump, a first connecting rod and an air delivery hole. The air pump is fixed to the bottom end of the servo motor. The bottom end of the air pump is fixed with the first connecting rod. The outside of the first connecting rod is connected to the air delivery hole. The outside of the first connecting rod is fixed with a preheating disk. The top of the preheating disk is provided with a guide pattern. The vibration mechanism includes a trigger, a second connecting rod and a limit plate. The trigger is fixed to the outside of the first connecting rod. The second connecting rod is movably connected to the inside of the mixing barrel. The limit plate is fixed to the outside of the second connecting rod.
[0007] Preferably, the air delivery pump is fixed to the rotating end of the servo motor, the output end of the air delivery pump is connected to the first connecting rod, the air delivery holes are provided in a plurality of groups, and the air delivery holes are distributed at equal intervals about the central axis of the first connecting rod, the preheating disk is frustum-shaped, and the interior of the preheating disk is provided with a plurality of groups of heating wires, and the guide patterns are provided in a plurality of groups, and the guide patterns are distributed at equal intervals about the central axis of the preheating disk.
[0008] Preferably, a third connecting rod is fixed to the outside of the second connecting rod, a return spring is fixed to the outside of the limiting plate, and a fourth connecting rod is fixed to the outside of the third connecting rod.
[0009] Preferably, four groups of trigger members are provided, and the trigger members are distributed at equal intervals about the central axis of the first connecting rod. A groove is provided at one end of the trigger member. The second connecting rod is slidingly connected to the mixing barrel, and the second connecting rod is symmetrically distributed about the central axis of the mixing barrel.
[0010] Preferably, the diameter of the limiting plate is larger than the diameter of the second connecting rod, and the return spring is used to squeeze the limiting plate and the second connecting rod and keep them moving inward.
[0011] Preferably, the mixing mechanism includes a first mounting seat, a first mixing rod and a cylinder, wherein the first mounting seat is fixed to the outside of the first connecting rod, the first mixing rod is hingedly connected to the inside of the first mounting seat, the bottom end of the first mixing rod is hingedly connected to the cylinder, the second mounting seat is fixed to the outside of the first connecting rod, and the second mixing rod is hingedly connected to the inside of the second mounting seat.
[0012] Preferably, a cylinder is hingedly connected to the top end of the second mixing rod, and the first mounting seat and the second mounting seat are provided in a plurality of groups, and the first mounting seat and the second mounting seat are distributed at equal intervals about the central axis of the first connecting rod.
[0013] Preferably, the first mounting seat and the second mounting seat are symmetrically distributed about the central axis of the cylinder, and the first mixing rod and the second mixing rod are provided in several groups, and the first mixing rod and the second mixing rod are equidistantly distributed about the central axis of the first connecting rod.
[0014] Preferably, a feed hopper is fixed inside the mixing barrel, and a stirring rod is fixed at the bottom end of the first connecting rod.
[0015] The present invention also provides a production process for high magnetic permeability soft magnetic injection molded parts, comprising the following steps: S1. After the soft magnetic particles are put into the top of the feed hopper, the servo motor is started to drive the air pump and the first connecting rod to rotate. As the gap between the preheating disk and the feed hopper gradually shrinks from top to bottom, the soft magnetic particles will accumulate on the top of the preheating disk. At this time, the electric heating wire inside the preheating disk is started to preheat the soft magnetic particles at the top of the preheating disk to partially soften them. After the preheating disk rotates, the soft magnetic particles are guided by the guide grooves and fall into the interior of the mixing barrel. When the soft magnetic particles accumulate between the preheating disk and the feed hopper, the air pump is started to blow air obliquely to the soft magnetic particles through the air holes, thereby assisting the heat to contact the surface of the soft magnetic particles and generating a force to blow the soft magnetic particles to assist the soft magnetic particles to fall into the interior of the bottom mixing barrel. S2. When the first connecting rod rotates, the trigger member can be driven to rotate, so that the trigger member squeezes the second connecting rod, and after the trigger member is separated from the contact with the second connecting rod, the second connecting rod is no longer squeezed, and the restoring force of the reset spring resets the second connecting rod as a whole, and then the contact of multiple groups of trigger members causes the second connecting rod and the third connecting rod and the fourth connecting rod fixed on the second connecting rod to reciprocate, so that the fourth connecting rod continuously contacts and separates from the outer wall of the feed hopper, thereby vibrating the feed hopper, so that when the soft magnetic particles are between the preheating plate and the feed hopper, the vibration of the feed hopper can assist the falling of the soft magnetic particles; S3. When the soft magnetic particles are inside the mixing barrel, the angles of the first mixing rod and the second mixing rod can be controlled by activating the cylinder, and different numbers of soft magnetic particles can be set to a closed state or an expanded state, thereby improving the effect of the device on stirring and mixing the soft magnetic particles, so that the subsequent blanking can be more uniform; S4, the soft magnetic particles are mixed and preheated by the mixing drum and then transported to the injection molding device at the bottom, the soft magnetic particles are melted into a fluid by the injection molding device, and the fluid soft magnetic material is transported by the spiral conveying rod, so that the fluid soft magnetic material is injected into the mold for shaping; S5. When the fluid soft magnetic material moves to the end of the conveying cylinder, a pair of electromagnets are added at the injection head position to limit the flow of the soft magnetic material in the central area, and the internal flow path of the injection head is changed to a structure that is wide at the back and narrow at the front, and the head is flat. The fluid soft magnetic material is oriented by the electromagnet to ensure the consistency of the finished product, thereby improving the magnetic permeability of the finished product.
[0016] Compared with the prior art, the present invention has the following beneficial effects: The present invention cooperates with structures such as an air pump, a first connecting rod, and an air delivery hole so that the device can start the electric heating wire inside the preheating disk, preheat the soft magnetic particles located at the top of the preheating disk, partially soften them, and then fall into the interior of the mixing barrel through the guidance of the guide pattern after the rotation of the preheating disk. When the soft magnetic particles accumulate between the preheating disk and the feed hopper, the air pump is started, and the air pump blows obliquely toward the soft magnetic particles through the air delivery hole, thereby assisting the heat to contact the surface of the soft magnetic particles, thereby achieving the purpose of facilitating the device to preheat the soft magnetic particles, improving the heating effect by blowing air, and causing them to fall out.
[0017] The present invention cooperates with structures such as a trigger member, a second connecting rod, and a limit plate, so that the device can drive the trigger member to rotate while the first connecting rod rotates, thereby causing the trigger member to squeeze the second connecting rod, and after the trigger member is out of contact with the second connecting rod, the second connecting rod is no longer squeezed. At this time, the second connecting rod is reset as a whole by the restoring force of the reset spring, thereby vibrating the feed hopper, thereby achieving the purpose of facilitating the device to assist the soft magnetic particles in falling out through the vibration of the feed hopper when the soft magnetic particles are between the preheating plate and the feed hopper.
[0018] The present invention arranges the coordination of the first mounting seat, the first mixing rod, the cylinder and other structures, so that the device can control the expansion angle of the first mixing rod and the second mixing rod by activating the cylinder, and can be set to a closed state or an expanded state according to different numbers of soft magnetic particles, thereby achieving the purpose of facilitating the device to stir and mix the soft magnetic particles. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a partial cross-sectional structural schematic diagram of the present invention; Figure 3 It is a schematic structural diagram of the mixing barrel of the present invention; Figure 4 It is a schematic diagram of the cross-sectional structure of the mixing barrel of the present invention; Figure 5 Schematic diagram of the overall cross-sectional structure of the mixing barrel of the present invention; Figure 6 For the present invention Figure 5 A schematic diagram of the enlarged structure of the local section at point A in the middle; Figure 7 For the present invention Figure 5 A schematic diagram of the enlarged structure of the local section at point B in the middle; Figure 8 It is a schematic structural diagram of the mixing mechanism of the present invention.
[0020] In the figure: 1. Injection molding base; 2. Injection molding device; 3. Mixing barrel; 4. Orienter; 5. Servo motor; 6. Feed hopper; 7. Preheating mechanism; 701. Air pump; 702. First connecting rod; 703. Air delivery hole; 704. Preheating plate; 705. Guide pattern; 8. Vibration mechanism; 801. Trigger; 802. Second connecting rod; 803. Limiting plate; 804. Third connecting rod; 805. Return spring; 806. Fourth connecting rod; 9. Mixing mechanism; 901. First mounting seat; 902. First mixing rod; 903. Cylinder; 904. Second mounting seat; 905. Second mixing rod; 10. Stirring rod. DETAILED DESCRIPTION
[0021] like Figures 1 to 8 As shown, the present invention provides a high magnetic permeability soft magnetic injection molded part, including an injection molding base 1, an injection molding device 2 is fixed to the top of the injection molding base 1, a mixing barrel 3 is fixed to the top of the injection molding device 2, an orienter 4 is installed on the outside of the injection molding device 2, a servo motor 5 is fixed to the top of the mixing barrel 3, a preheating mechanism 7 is fixed to the bottom end of the servo motor 5, a vibration mechanism 8 is provided at one end of the preheating mechanism 7, a mixing mechanism 9 is provided at one end of the preheating mechanism 7, a feed hopper 6 is fixed inside the mixing barrel 3, and a stirring rod 10 is fixed to the bottom end of the first connecting rod 702.
[0022] like Figures 1 to 6 As shown, the preheating mechanism 7 includes an air pump 701, a first connecting rod 702 and an air delivery hole 703. The air pump 701 is fixed to the bottom end of the servo motor 5. The first connecting rod 702 is fixed to the bottom end of the air pump 701. The outside of the first connecting rod 702 is connected to the air delivery hole 703. A preheating disk 704 is fixed to the outside of the first connecting rod 702. The top of the preheating disk 704 is provided with a guide pattern 705. The air pump 701 is fixed to the rotating end of the servo motor 5. The output end of the air pump 701 is connected to the first connecting rod 702. Several groups of air delivery holes 703 are provided. The air delivery holes 703 are evenly spaced about the central axis of the first connecting rod 702. The preheating disk 704 is truncated cone-shaped. Several groups of heating wires are provided inside the preheating disk 704. Several groups of guide patterns 705 are provided. The guide patterns 705 are evenly spaced about the central axis of the preheating disk 704.
[0023] The above solution is adopted: by starting the servo motor 5 to drive the air pump 701 and the first connecting rod 702 to rotate, the gap between the preheating disk 704 and the feed hopper 6 gradually shrinks from top to bottom, so that the soft magnetic particles will accumulate on the top of the preheating disk 704. At this time, the electric heating wire inside the preheating disk 704 is started to preheat the soft magnetic particles at the top of the preheating disk 704, so that they are partially softened. After the preheating disk 704 rotates, it is guided by the guide pattern 705 and falls into the interior of the mixing barrel 3.
[0024] like Figures 1 to 7As shown, the vibration mechanism 8 includes a trigger member 801, a second connecting rod 802 and a limit plate 803. The trigger member 801 is fixed to the outside of the first connecting rod 702, and the second connecting rod 802 is movably connected to the inside of the mixing barrel 3. Four groups of trigger members 801 are provided. The trigger members 801 are evenly spaced about the central axis of the first connecting rod 702. A groove is provided at one end of the trigger member 801. The second connecting rod 802 is slidably connected to the mixing barrel 3, and the second connecting rod 802 is symmetrically distributed about the central axis of the mixing barrel 3.
[0025] like Figures 1 to 7 As shown, a limiting plate 803 is fixed to the outside of the second connecting rod 802, a third connecting rod 804 is fixed to the outside of the second connecting rod 802, a return spring 805 is fixed to the outside of the limiting plate 803, the diameter of the limiting plate 803 is larger than the diameter of the second connecting rod 802, the return spring 805 is used to squeeze the limiting plate 803 and the second connecting rod 802 and keep them moving inward, and a fourth connecting rod 806 is fixed to the outside of the third connecting rod 804.
[0026] The above-mentioned scheme is adopted: by driving the trigger member 801 to rotate while the first link 702 rotates, the trigger member 801 squeezes the second link 802, and after the trigger member 801 is separated from the contact with the second link 802, the second link 802 is no longer squeezed. At this time, the second link 802 is reset as a whole by the restoring force of the reset spring 805, and then the contact of multiple groups of trigger members 801 makes the second link 802 and the third link 804 and the fourth link 806 fixed on the second link 802 reciprocate, so that the fourth link 806 continuously contacts and separates from the outer wall of the feed hopper 6, thereby vibrating the feed hopper 6.
[0027] like Figures 1 to 8 As shown, the mixing mechanism 9 includes a first mounting seat 901, a first mixing rod 902 and a cylinder 903. The first mounting seat 901 is fixed to the outside of the first connecting rod 702, the first mixing rod 902 is hinged inside the first mounting seat 901, the bottom end of the first mixing rod 902 is hinged to the cylinder 903, the second mounting seat 904 is fixed to the outside of the first connecting rod 702, the second mixing rod 905 is hinged inside the second mounting seat 904, and the top end of the second mixing rod 905 is hinged to the cylinder 903. The first mounting seat 901 and the second mounting seat 904 are arranged in several groups, and the first mounting seat 901 and the second mounting seat 904 are evenly spaced about the central axis of the first connecting rod 702. The first mounting seat 901 and the second mounting seat 904 are symmetrically distributed about the central axis of the cylinder 903. The first mixing rod 902 and the second mixing rod 905 are arranged in several groups, and the first mixing rod 902 and the second mixing rod 905 are evenly spaced about the central axis of the first connecting rod 702.
[0028] By adopting the above solution: by starting the cylinder 903 to control the expansion angle of the first mixing rod 902 and the second mixing rod 905, different numbers of soft magnetic particles can be set to a closed state or an expanded state, thereby improving the effect of the device on stirring and mixing the soft magnetic particles, making it more uniform during subsequent blanking.
[0029] The present invention also provides a production process for high magnetic permeability soft magnetic injection molded parts, comprising the following steps: S1. After the soft magnetic particles are put into the top of the feed hopper 6, the servo motor 5 is started to drive the air pump 701 and the first connecting rod 702 to rotate. Since the gap between the preheating disk 704 and the feed hopper 6 gradually shrinks from top to bottom, the soft magnetic particles will accumulate on the top of the preheating disk 704. At this time, the electric heating wire inside the preheating disk 704 is started to preheat the soft magnetic particles at the top of the preheating disk 704, so that they are partially softened. After the preheating disk 704 rotates, it falls into the interior of the mixing barrel 3 through the guidance of the guide pattern 705. When the soft magnetic particles accumulate between the preheating disk 704 and the feed hopper 6, the air pump 701 is started. The air pump 701 blows air obliquely to the soft magnetic particles through the air holes 703, thereby assisting the heat to contact the surface of the soft magnetic particles and generating a force to blow the soft magnetic particles to assist the soft magnetic particles to fall into the interior of the bottom mixing barrel 3. S2. When the first link 702 rotates, the trigger member 801 can be driven to rotate, so that the trigger member 801 squeezes the second link 802, and after the trigger member 801 is separated from the contact with the second link 802, the second link 802 is no longer squeezed. At this time, the second link 802 is reset as a whole by the restoring force of the reset spring 805, and then the contact of multiple groups of trigger members 801 makes the second link 802 and the third link 804 and the fourth link 806 fixed on the second link 802 reciprocate, so that the fourth link 806 continuously contacts and separates from the outer wall of the feed hopper 6, thereby vibrating the feed hopper 6, so that when the soft magnetic particles are between the preheating disk 704 and the feed hopper 6, the vibration of the feed hopper 6 can assist the falling of the soft magnetic particles; S3. When the soft magnetic particles are inside the mixing barrel 3, the expansion angles of the first mixing rod 902 and the second mixing rod 905 can be controlled by starting the cylinder 903, and different numbers of soft magnetic particles can be set to a closed state or an expanded state, thereby improving the effect of the device on stirring and mixing the soft magnetic particles, so that the subsequent blanking can be more uniform; S4, the mixing drum 3 mixes and preheats the soft magnetic particles and then conveys them to the injection molding device 2 at the bottom, where the soft magnetic particles are melted into a fluid by the injection molding device 2, and the fluid soft magnetic material is conveyed by the spiral conveying rod, so that the fluid soft magnetic material is injected into the mold for shaping; S5. When the fluid soft magnetic material moves to the end of the conveying cylinder, a pair of electromagnets are added at the injection head position to limit the flow of the soft magnetic material in the central area, and the internal flow path of the injection head is changed to a structure that is wide at the back and narrow at the front, and the head is flat. The fluid soft magnetic material is oriented by the electromagnet to ensure the consistency of the finished product, thereby improving the magnetic permeability of the finished product.
[0030] The examples of this specific embodiment are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, any equivalent changes made based on the structure, shape, and principle of this application should be included in the scope of protection of this application.
Claims
1. A high magnetic permeability soft magnetic injection molded part, comprising an injection molded base (1), characterized in that: An injection molding device (2) is fixed to the top of the injection molding base (1), a mixing cylinder (3) is fixed to the top of the injection molding device (2), an orienter (4) is installed outside the injection molding device (2), a servo motor (5) is fixed to the top of the mixing cylinder (3), a preheating mechanism (7) is fixed to the bottom of the servo motor (5), a vibration mechanism (8) is provided at one end of the preheating mechanism (7), and a mixing mechanism (9) is provided at one end of the preheating mechanism (7); The preheating mechanism (7) includes an air delivery pump (701), a first connecting rod (702) and an air delivery hole (703); the air delivery pump (701) is fixed to the bottom end of the servo motor (5); the first connecting rod (702) is fixed to the bottom end of the air delivery pump (701); the outside of the first connecting rod (702) is connected to the air delivery hole (703); the outside of the first connecting rod (702) is fixed to a preheating disk (704); the top end of the preheating disk (704) is provided with a guide pattern (705); The vibration mechanism (8) comprises a trigger member (801), a second connecting rod (802) and a limit plate (803), wherein the trigger member (801) is fixed to the outside of the first connecting rod (702), the second connecting rod (802) is movably connected to the inside of the mixing barrel (3), and the limit plate (803) is fixed to the outside of the second connecting rod (802).
2. The high permeability soft magnetic injection molded part according to claim 1, characterized in that: The air delivery pump (701) is fixed to the rotating end of the servo motor (5), and the output end of the air delivery pump (701) is connected to the first connecting rod (702). The air delivery holes (703) are provided in a plurality of groups, and the air delivery holes (703) are distributed at equal intervals about the central axis of the first connecting rod (702). The preheating disk (704) is truncated, and the interior of the preheating disk (704) is provided with a plurality of groups of heating wires. The guide lines (705) are provided in a plurality of groups, and the guide lines (705) are distributed at equal intervals about the central axis of the preheating disk (704).
3. The high permeability soft magnetic injection molded part according to claim 1, characterized in that: A third connecting rod (804) is fixed to the outside of the second connecting rod (802), a return spring (805) is fixed to the outside of the limiting plate (803), and a fourth connecting rod (806) is fixed to the outside of the third connecting rod (804).
4. The high permeability soft magnetic injection molded part according to claim 1, characterized in that: Four groups of trigger members (801) are provided. The trigger members (801) are distributed at equal intervals about the central axis of the first connecting rod (702). A groove is provided at one end of the trigger member (801). The second connecting rod (802) is slidably connected to the mixing barrel (3). The second connecting rod (802) is symmetrically distributed about the central axis of the mixing barrel (3).
5. The high permeability soft magnetic injection molded part according to claim 3, characterized in that: The diameter of the limiting plate (803) is larger than the diameter of the second connecting rod (802), and the return spring (805) is used to squeeze the limiting plate (803) and the second connecting rod (802) and keep them moving inward.
6. The high permeability soft magnetic injection molded part according to claim 1, characterized in that: The mixing mechanism (9) comprises a first mounting seat (901), a first mixing rod (902) and a cylinder (903); the first mounting seat (901) is fixed to the outside of the first connecting rod (702); the first mixing rod (902) is hingedly connected to the inside of the first mounting seat (901); the bottom end of the first mixing rod (902) is hingedly connected to the cylinder (903); the second mounting seat (904) is fixed to the outside of the first connecting rod (702); and the second mixing rod (905) is hingedly connected to the inside of the second mounting seat (904).
7. The high permeability soft magnetic injection molded part according to claim 6, characterized in that: The top end of the second mixing rod (905) is hingedly connected to a cylinder (903), and the first mounting seat (901) and the second mounting seat (904) are provided in a plurality of groups, and the first mounting seat (901) and the second mounting seat (904) are distributed at equal intervals about the central axis of the first connecting rod (702).
8. The high permeability soft magnetic injection molded part according to claim 6, characterized in that: The first mounting seat (901) and the second mounting seat (904) are symmetrically distributed about the central axis of the cylinder (903); the first mixing rod (902) and the second mixing rod (905) are provided in a plurality of groups; the first mixing rod (902) and the second mixing rod (905) are distributed at equal intervals about the central axis of the first connecting rod (702).
9. The high permeability soft magnetic injection molded part according to claim 1, characterized in that: A feed hopper (6) is fixed inside the mixing barrel (3), and a stirring rod (10) is fixed at the bottom end of the first connecting rod (702).
10. A process for producing high permeability soft magnetic injection molded parts, using the high permeability soft magnetic injection molded parts according to claims 1-9, characterized in that: The following steps are involved: S1. After the soft magnetic particles are put into the top of the feed hopper (6), the servo motor (5) is started to drive the air pump (701) and the first connecting rod (702) to rotate. As the gap between the preheating disk (704) and the feed hopper (6) gradually shrinks from top to bottom, the soft magnetic particles will accumulate on the top of the preheating disk (704). At this time, the heating wire inside the preheating disk (704) is started to preheat the soft magnetic particles at the top of the preheating disk (704) to soften them partially. After the preheating disk (704) rotates, the soft magnetic particles are guided by the guide pattern (705) and fall into the interior of the mixing barrel (3). When the soft magnetic particles accumulate between the preheating disk (704) and the feed hopper (6), the air delivery pump (701) is started, and the air delivery pump (701) blows air obliquely toward the soft magnetic particles through the air delivery holes (703), thereby assisting the heat to contact the surface of the soft magnetic particles and generating a force to blow the soft magnetic particles to assist the soft magnetic particles to fall into the interior of the bottom mixing barrel (3); S2, when the first connecting rod (702) rotates, the trigger member (801) can be driven to rotate, so that the trigger member (801) squeezes the second connecting rod (802), and after the trigger member (801) is separated from the contact with the second connecting rod (802), the second connecting rod (802) is no longer squeezed, and the second connecting rod (802) is reset as a whole by the restoring force of the reset spring (805), and then the second connecting rod (802) and the third connecting rod (804) and the fourth connecting rod (806) fixed on the second connecting rod (802) are caused to reciprocate through the contact of multiple groups of trigger members (801), so that the fourth connecting rod (806) is constantly in contact with and separated from the outer wall of the feed hopper (6), thereby vibrating the feed hopper (6), so that the soft magnetic particles can be assisted by the vibration of the feed hopper (6) to fall between the preheating plate (704) and the feed hopper (6); S3. When the soft magnetic particles are inside the mixing barrel (3), the expansion angles of the first mixing rod (902) and the second mixing rod (905) can be controlled by starting the air cylinder (903), and different numbers of soft magnetic particles can be set to a closed state or an expanded state, thereby improving the effect of the device on stirring and mixing the soft magnetic particles, so that the soft magnetic particles can be more uniform during subsequent blanking; S4, the mixing barrel (3) mixes and preheats the soft magnetic particles and then conveys them to the injection molding device (2) at the bottom, melts the soft magnetic particles into a fluid through the injection molding device (2), and conveys the fluid soft magnetic material through the spiral conveying rod, so that the fluid soft magnetic material is injected into the mold for shaping; S5. When the fluid soft magnetic material moves to the end of the conveying cylinder, a pair of electromagnets are added at the injection head position to limit the flow of the soft magnetic material in the central area, and the internal flow path of the injection head is changed to a structure that is wide at the back and narrow at the front, and the head is flat. The fluid soft magnetic material is oriented by the electromagnet to ensure the consistency of the finished product, thereby improving the magnetic permeability of the finished product.