Preparation process of manganese-zinc soft magnetic ferrite powder for automotive electronics

Abstract

The invention relates to the technical field of preparation of soft magnetic ferrites, and discloses a preparation process of manganese-zinc soft magnetic ferrite powder for automotive electronics, which comprises the following steps: S1, grinding raw materials, S2, mixing the materials, S3, sampling the mixture, S4, pre-sintering and S5, granulating the powder. Through the design of a material control mechanism, in the stirring process, the connecting end between a first swing rod and a second swing rod always faces the position of a through groove, so that in the feeding process, the through groove faces downwards when a mixing frame is controlled to rotate, then raw materials can be accelerated to be discharged through the through groove in the rotating process of a round rod, and a two-way threaded rod is further controlled to rotate; the end portions of the first swing rod and the second swing rod push the contact rod, under the cooperation with the elastic acting force of the spring, the stirring main rod is shaken at the through groove position, residual raw materials on the stirring main rod can be shaken off, the purpose of full discharging is achieved, and through the design of the sampling mechanism, a user can more directly grasp the mixing condition.

Description

Technical Field

[0001] The invention relates to the technical field of soft ferrite preparation, in particular to a preparation process of manganese-zinc soft ferrite powder for automotive electronics. Background Art

[0002] Soft ferrite, as the name suggests, is a magnetic material. Its application feature is "magnetic conductivity". Just like metals are conductive, some materials are magnetic, which we call magnetic materials. Magnetic materials are divided into hard magnetic and soft magnetic. The difference between soft magnets and hard magnetic materials is that soft magnets themselves are not magnetic. Only when an external energized solenoid is applied, a magnetic field is generated. When the external current is removed, the magnetic field no longer exists. Manganese-zinc ferrite is a soft magnetic material with very good electrical, magnetic and optical properties. When making automotive electronic devices, adding manganese-zinc soft ferrite materials can effectively reduce electromagnetic interference and energy loss.

[0003] The Chinese patent application with announcement number CN218854140U proposes a raw material mixing device for the production of soft magnetic manganese-zinc ferrite powder. The surface shape of the raw material for producing the soft magnetic manganese-zinc ferrite powder is first optimized and screened through grinding by a grinding mechanism, and then introduced into a mixing mechanism for mixing through a feeding mechanism. This solves the problem in the prior art that when the raw materials for the soft magnetic manganese-zinc ferrite powder are mixed by dry method, the particle shape of the raw materials is not further optimized and screened, resulting in poor quality of the finished product.

[0004] In the process of preparing manganese-zinc soft ferrite powder, it is often necessary to mix the raw materials with good proportions. The above device realizes mixing after further optimizing and screening the particle shape. The mixing steps are similar to the existing mixing process. After mixing, it is discharged and enters the next process. However, during the mixing process, if there is water in the mixture, the presence of water will cause the viscosity of the mixture to increase. Accordingly, when feeding, it is easy for the material to adhere to the inside of the mixing device and cannot fall quickly. If the adhered mixed material is not discharged in time, the discharged material will be less than the set amount, which will affect the subsequent processing accuracy. At the same time, the material adhered to the mixing device will also cause pressure on the subsequent cleaning work. Summary of the invention

[0005] In order to solve the above-mentioned problems, the present invention provides a preparation process of manganese-zinc soft ferrite powder for automotive electronics.

[0006] The present invention provides a preparation process of a manganese-zinc soft ferrite powder for automotive electronics using the following technical scheme: A preparation process of manganese-zinc soft ferrite powder for automotive electronics comprises the following steps: S1. Grinding the raw materials, grinding the raw materials of iron oxide, zinc oxide and manganese oxide respectively, and weighing them according to the proportion after grinding; S2. Material mixing, the raw materials are sequentially put into the mixing device to mix the ingredients, and at the same time, 3 to 5% of fine camphor powder is added; S3. Mixture sampling: during the mixing process, samples are taken from different areas of the mixing device. After sampling, the staff will judge the overall mixing situation and dry it after mixing. S4. Pre-sintering, pre-sintering the mixed dried material, and setting the temperature to between 850 and 980° C. during sintering; S5. Powder granulation, using a ball mill to grind the sintered material, and after grinding, using a spray granulation device to granulate the powder; The mixing device in step S2 and step S3 comprises a bottom plate, a main body plate is fixedly connected to the top of the bottom plate, a mixing frame is arranged inside the main body plate, and a material control mechanism is arranged on the mixing frame; The material control mechanism includes two support plates, which are respectively fixedly connected to the two side walls of the mixing frame, and the two support plates are fixedly connected with connecting rods, which respectively penetrate the two side walls of the main plate and are rotatably connected to the main plate. A through groove is provided on the top of the mixing frame, and a round rod is rotatably connected inside the mixing frame, and the round rod extends out of the outside of the mixing frame. A cavity is provided on the round rod, and a stirring main rod is arranged outside the round rod, and the outside of the stirring main rod is in contact with the inner cavity wall of the mixing frame, and a positioning rod is fixedly connected to the outside of the round rod, and the positioning rod extends into the inside of the stirring main rod and is slidably connected to the stirring main rod, and a spring is fixedly connected to the positioning rod, and the spring is fixedly connected to the inside of the stirring main rod, and a baffle is fixedly connected to the inside of the stirring main rod, and the baffle is arranged when the stirring main rod is in motion. The inner side of the main rod is arranged at equal intervals, and a mounting plate is rotatably connected inside the round rod, and an auxiliary plate is fixedly connected to one side wall of the mixing frame, and the mounting plate extends out of the outside of the round rod, and one side of the auxiliary plate is fixedly connected to the inner side of the auxiliary plate, and a two-way threaded rod is rotatably connected to the inner side of the mounting plate, and two moving blocks are slidably connected inside the mounting plate, and the two-way threaded rod passes through the two moving blocks in sequence, and the two-way threaded rod is connected to the moving blocks by threads, one of the moving blocks is movably connected to a first swing rod by a movable hinge seat, and the other moving block is movably connected to a second swing rod by a movable hinge seat, one end of the first swing rod extends into the inside of the second swing rod, and the first swing rod and the second swing rod are connected by a rotating shaft, and a contact rod is fixedly connected to the inner side of the stirring main rod.

[0007] By adopting the above technical scheme, when the raw materials are mixed, the raw materials are transported to the inside of the mixing frame through the opening at the top of the mixing frame, and finally the round rod is controlled to rotate. After the round rod drives the stirring main rod to rotate, the purpose of mixing and stirring the raw materials inside the mixing frame can be achieved. During the stirring process, the connecting end between the first swing rod and the second swing rod is always facing the through slot position. Therefore, when feeding, the through slot is downward when the mixing frame is controlled to rotate. Then, during the rotation of the round rod, the discharge of the raw materials through the through slot can be accelerated. It further controls the rotation of the bidirectional threaded rod, and the ends of the first swing rod and the second swing rod push the contact rod. Under the cooperation of the elastic force of the spring, the stirring main rod is shaken at the through slot position, and the raw materials remaining on the stirring main rod itself can be shaken off, thereby achieving the purpose of sufficient discharge.

[0008] Preferably, the bidirectional threaded rod extends out of the round rod, one end of the bidirectional threaded rod is rotatably connected to the inner side of the auxiliary plate, a circular baffle is rotatably connected inside the round rod, the mounting plate passes through the circular baffle, the bidirectional threaded rod passes through the circular baffle and is rotatably connected to the circular baffle, a first motor is fixedly connected to one side of the auxiliary plate, and the first motor is fixedly connected to one end of the bidirectional threaded rod through an output shaft.

[0009] By adopting the above technical solution, the circular baffle can prevent the mixed material in the mixing frame from being discharged to the outside of the mixing cavity through the cavity.

[0010] Preferably, a U-shaped plate is fixedly connected to one side wall of the mixing frame, one end of the round rod is rotatably connected to the inner side of the U-shaped plate, a second motor is fixedly connected to one side of the U-shaped plate, the second motor is fixedly connected to the first gear through the output shaft, and a second gear is fixedly connected to the outside of the round rod, and the first gear is meshed with the second gear.

[0011] By adopting the above technical solution, the first gear rotates to drive the second gear to rotate.

[0012] Preferably, one of the connecting rods is fixedly connected to the outside of a third gear, a lifting plate is slidably connected to one side wall of the support plate, a first rack is fixedly connected to the lifting plate, the first rack is arranged on the rear side of the third gear, and the first rack is meshed with the third gear, a square plate is fixedly connected to one side wall of the support plate, a first electric push rod is fixedly connected to the bottom of the square plate, and one end of the first electric push rod is fixedly connected to the top of the lifting plate.

[0013] By adopting the above technical solution, the first electric push rod can push and pull the lifting plate up and down after working.

[0014] Preferably, track plates are fixedly connected to both side walls of the mixing frame, a cover plate is slidably connected between the two track plates, the cover plate is in contact with the outer surface of the mixing frame, a frame plate is provided on the outside of the mixing frame, and both ends of the frame plate are fixedly connected to the two track plates respectively.

[0015] By adopting the above technical solution, after the cover plate moves to the outside of the through groove, the through groove portion is shielded and sealed.

[0016] Preferably, a transmission rod is rotatably connected to the inner side of the frame plate, a third motor is fixedly connected to one side wall of the frame plate, the third motor is fixedly connected to one end of the transmission rod through an output shaft, two fourth gears are fixedly connected to the outside of the transmission rod, and two second racks are fixedly connected to the cover plate, and the two second racks are respectively meshed with the two fourth gears.

[0017] By adopting the above technical solution, the second rack moves to drive the fourth gear to rotate.

[0018] Preferably, a sampling mechanism is provided at the bottom of the mixing frame, and the sampling mechanism includes a placement seat, and the placement seat is fixedly connected to the bottom of the mixing frame; a sampling plate is provided at the bottom of the mixing frame, and the sampling plate passes through the placement seat and matches with the placement seat; a sampling groove is provided on the sampling plate, and the sampling groove is communicated with the mixing frame; a horizontal plate is fixedly connected between adjacent sampling plates; a vertical plate is fixedly connected to the mixing frame, a connecting plate is provided on one side of the vertical plate, the connecting plate passes through the vertical plate, and both ends of the connecting plate are fixedly connected to the horizontal plate; a second electric push rod is fixedly connected to one side wall of the connecting plate, and one end of the second electric push rod is fixedly connected to one side of the vertical plate.

[0019] By adopting the above technical solution, the second electric push rod drives the connecting plate to move after being extended and retracted.

[0020] Preferably, a feeding mechanism is provided on the top of the main body plate, and the feeding mechanism includes a feeding hopper, the feeding hopper passes through the top wall of the main body plate and is slidably connected to the main body plate, an L-shaped plate is fixedly connected to the front side of the main body plate, a control block is slidably connected to the inner side of the L-shaped plate, a push-pull rod is movably connected to the top of the control block through a movable hinge seat, and one end of the push-pull rod is movably connected to a side wall of the feed hopper through a movable hinge seat.

[0021] By adopting the above technical solution, the control block moves to drive the push-pull rod to flip, and the push-pull rod pushes the feed hopper after flipping.

[0022] Preferably, a third electric push rod is fixedly connected to one side wall of the L-shaped plate, and one end of the third electric push rod is fixedly connected to one side of the control block.

[0023] By adopting the above technical solution, the third electric push rod pushes and pulls the control block after working.

[0024] In summary, the present invention includes the following beneficial technical effects: Through the design of the material control mechanism, during the stirring process, the connecting end between the first swing rod and the second swing rod is always oriented to the through slot position. Therefore, when feeding, the mixing frame is controlled to rotate with the through slot facing downward, and then the discharge of the raw materials through the through slot can be accelerated during the rotation of the round rod, which further controls the rotation of the bidirectional threaded rod, and the ends of the first swing rod and the second swing rod push the contact rod, which cooperates with the elastic force of the spring to achieve the shaking of the stirring main rod at the through slot position, and the raw materials remaining on the stirring main rod itself can be shaken off, thereby achieving the purpose of sufficient material discharge.

[0025] Through the design of the sampling mechanism, during the mixing and stirring process, when the sampling slot is controlled to be in the placement frame, the mixture falls into the sampling slot. After the sampling slot is controlled to leave the placement frame, the user can check the mixture in the sampling slot, which is beneficial for the user to grasp the mixing situation more directly. The mixtures in different sampling slots further reflect the mixing situation of different areas inside the mixing frame, avoiding the situation where the mixing degree is not uniform. Compared with traditional mixing, which is difficult for humans to properly understand the internal mixing situation, it is more beneficial for intuitively grasping the mixing process.

[0026] The present invention uses a round rod to drive a stirring main rod to rotate during the mixing and stirring operation. After the stirring main rod rotates, the raw materials inside the mixing frame are scooped up. After the raw materials are scooped up, they fall from a high place. When falling, the baffle bars on the inner side of the stirring main rod will block the raw materials, causing the raw materials to fall into the gaps between adjacent baffle bars, thereby subdividing and shaking them up. After shaking them up, the stirring and scooping are repeated, so as to achieve the purpose of quickly mixing the raw materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a side structural diagram of the present invention; Figure 3 for Figure 2 A in the enlarged view; Figure 4 It is a structural schematic diagram of the lifting plate in the present invention; Figure 5 It is a cross-sectional structural diagram of the mixing frame in the present invention; Figure 6 for Figure 5 The enlarged view of point B in the figure; Figure 7 A top view of the mixing frame of the present invention; Figure 8 It is a structural cross-sectional view of the sampling plate in the present invention; Fig. 9 It is a schematic diagram of the structure of the round rod in the present invention; Fig.10 It is a structural cross-sectional view of the stirring main rod in the present invention; Fig.11 for Fig.10 The enlarged view of point C in the figure; Fig.12 for Fig.10 The enlarged view of D in the figure; Fig.13 A cross-sectional structural diagram of the mounting plate of the present invention; Fig.14 It is a schematic diagram of the preparation process of the present invention.

[0028] Description of the accompanying drawings: 1. bottom plate; 2. main plate; 3. mixing frame; 4. material control mechanism; 41. support plate; 42. connecting rod; 43. through groove; 44. round rod; 45. cavity; 46. stirring main rod; 47. positioning rod; 48. spring; 49. baffle; 491. mounting plate; 492. auxiliary plate; 493. two-way threaded rod; 494. moving block; 495. first swing rod; 496. second swing rod; 497. contact rod; 498. circular baffle; 499. first motor; 481. U-shaped plate; 482. second motor; 483. first gear; 484. The second gear; 485, the third gear; 486, the lifting plate; 487, the first rack; 488, the first electric push rod; 489, the track plate; 471, the cover plate; 472, the frame plate; 473, the transmission rod; 474, the third motor; 475, the fourth gear; 476, the second rack; 5, the sampling mechanism; 51, the placement seat; 52, the sampling plate; 53, the sampling slot; 54, the horizontal plate; 55, the vertical plate; 56, the connecting plate; 57, the second electric push rod; 6, the loading mechanism; 61, the feeding hopper; 62, the L-shaped plate; 63, the control block; 64, the push-pull rod; 65, the third electric push rod. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1 -Attached Fig.14 The present invention is described in further detail.

[0030] The present invention discloses a preparation process of manganese-zinc soft ferrite powder for automotive electronics. Figure 1-Figure 13 , including the following steps: S1. Grinding the raw materials, grinding the raw materials of iron oxide, zinc oxide and manganese oxide respectively, and weighing them according to the proportion after grinding; S2. Material mixing, the raw materials with good proportions are sequentially put into the mixing device to mix the ingredients, and at the same time, 3 to 5% of fine camphor powder is added. The fine camphor powder is used as a magnet sintering agent to play a bonding, lubrication and stabilizing role; S3. Mixture sampling: during the mixing process, samples are taken from different areas of the mixing device. After sampling, the staff will judge the overall mixing situation and dry it after mixing. S4. Pre-sintering, pre-sintering the mixed dried material, and setting the temperature to between 850 and 980° C. during sintering; S5. Powder granulation, using a ball mill to grind the sintered material, and after grinding, using a spray granulation device to granulate the powder; The mixing device in step S2 and step S3 comprises a bottom plate 1, a main plate 2 is fixedly connected to the top of the bottom plate 1, a mixing frame 3 is arranged inside the main plate 2, and a material control mechanism 4 is arranged on the mixing frame 3; The material control mechanism 4 includes two support plates 41, which are fixedly connected to the two side walls of the mixing frame 3 respectively, and the two support plates 41 are fixedly connected with connecting rods 42, which penetrate the two side walls of the main plate 2 respectively and are rotatably connected to the main plate 2. A through groove 43 is provided on the top of the mixing frame 3, and a round rod 44 is rotatably connected inside the mixing frame 3. The round rod 44 extends out of the outside of the mixing frame 3, and a cavity 45 is provided on the round rod 44. A stirring main rod 46 is arranged outside the round rod 44, and the outer side of the stirring main rod 46 contacts the inner cavity wall of the mixing frame 3. A positioning rod 47 is fixedly connected to the outside of the round rod 44, and the positioning rod 47 extends into the inside of the stirring main rod 46 and is slidably connected to the stirring main rod 46. A spring 48 is fixedly connected, and the spring 48 is fixedly connected to the inside of the stirring main rod 46. A baffle 49 is fixedly connected to the inside of the stirring main rod 46. The baffles 49 are arranged at equal intervals on the inside of the stirring main rod 46. A mounting plate 491 is rotatably connected to the inside of the round rod 44. An auxiliary plate 492 is fixedly connected to a side wall of the mixing frame 3. The mounting plate 491 extends out of the outside of the round rod 44. One side of the auxiliary plate 492 is fixedly connected to the inside of the auxiliary plate 492. A bidirectional threaded rod 493 is rotatably connected to the inside of the mounting plate 491. Two moving blocks 494 are slidably connected to the inside of the mounting plate 491. The bidirectional threaded rod 493 passes through the two moving blocks 494 in sequence, and the bidirectional threaded rod 493 is connected to the moving block 494 through threads. A first swing rod 495 is movably connected to one of the moving blocks 494 through a movable hinge seat, and a second swing rod 496 is movably connected to the other moving block 494 through a movable hinge seat. One end of the first swing rod 495 extends into the second swing rod 496, and the first swing rod 495 and the second swing rod 496 are connected through a rotating shaft. A contact rod 497 is fixedly connected to the inner side of the stirring main rod 46. When the raw materials are mixed, the raw materials are transported to the inside of the mixing frame 3 through the opening at the top of the mixing frame 3. Finally, the round rod 44 is controlled to rotate. After the round rod 44 drives the stirring main rod 46 to rotate, the raw materials inside the mixing frame 3 can be mixed and stirred. For the purpose of mixing, during the mixing process, the connecting end between the first swing rod 495 and the second swing rod 496 is always facing the position of the through groove 43. Therefore, when feeding, the through groove 43 is controlled to face downward when the mixing frame 3 rotates. Subsequently, during the rotation of the round rod 44, the discharge of the raw materials through the through groove 43 can be accelerated, which further controls the rotation of the bidirectional threaded rod 493, and the ends of the first swing rod 495 and the second swing rod 496 push the contact rod 497, and under the cooperation of the elastic force of the spring 48, the stirring main rod 46 is shaken in the position of the through groove 43, and the raw materials remaining on the stirring main rod 46 itself can be shaken off, thereby achieving the purpose of sufficient discharge.

[0031] The bidirectional threaded rod 493 extends out of the round rod 44, one end of the bidirectional threaded rod 493 is rotatably connected to the inner side of the auxiliary plate 492, a circular baffle 498 is rotatably connected to the inside of the round rod 44, the mounting plate 491 passes through the circular baffle 498, the bidirectional threaded rod 493 passes through the circular baffle 498 and is rotatably connected to the circular baffle 498, one side of the auxiliary plate 492 is fixedly connected to a first motor 499, the first motor 499 is fixedly connected to one end of the bidirectional threaded rod 493 through an output shaft, and the circular baffle 498 can prevent mixing. The mixed material in the mixing frame 3 is discharged from the outside of the mixing chamber through the cavity 45. A U-shaped plate 481 is fixedly connected to one side wall of the mixing frame 3. One end of the round rod 44 is rotatably connected to the inner side of the U-shaped plate 481. A second motor 482 is fixedly connected to one side of the U-shaped plate 481. The second motor 482 is fixedly connected to a first gear 483 via an output shaft. A second gear 484 is fixedly connected to the outside of the round rod 44. The first gear 483 is meshed with the second gear 484. The first gear 483 rotates and drives the second gear 484 to rotate. A third gear 485 is fixedly connected to the outside of one of the connecting rods 42, a lifting plate 486 is slidably connected to a side wall of the support plate 41, a first rack 487 is fixedly connected to the lifting plate 486, the first rack 487 is arranged at the rear side of the third gear 485, and the first rack 487 is meshed with the third gear 485, a square plate is fixedly connected to a side wall of the support plate 41, a first electric push rod 488 is fixedly connected to the bottom of the square plate, one end of the first electric push rod 488 is fixedly connected to the top of the lifting plate 486, and the first electric push rod 488 can push and pull the lifting plate 486 up and down after working; Track plates 489 are fixedly connected to both side walls of the mixing frame 3, a cover plate 471 is slidably connected between the two track plates 489, the cover plate 471 is in contact with the outer surface of the mixing frame 3, a frame plate 472 is arranged on the outer side of the mixing frame 3, both ends of the frame plate 472 are fixedly connected to the two track plates 489, after the cover plate 471 moves to the outer side of the through groove 43, the through groove 43 is shielded and sealed, a transmission rod 473 is rotatably connected to the inner side of the frame plate 472, a third motor 474 is fixedly connected to one side wall of the frame plate 472, the third motor 474 is fixedly connected to one end of the transmission rod 473 through an output shaft, two fourth gears 475 are fixedly connected to the outside of the transmission rod 473, two second racks 476 are fixedly connected to the cover plate 471, the two second racks 476 are respectively meshed with the two fourth gears 475, and the second rack 476 drives the fourth gear 475 to rotate after moving.

[0032] A sampling mechanism 5 is provided at the bottom of the mixing frame 3, and the sampling mechanism 5 includes a placement seat 51, and the placement seat 51 is fixedly connected to the bottom of the mixing frame 3. A sampling plate 52 is provided at the bottom of the mixing frame 3, and the sampling plate 52 passes through the placement seat 51 and matches with the placement seat 51. A sampling slot 53 is provided on the sampling plate 52, and the sampling slot 53 is communicated with the mixing frame 3. A horizontal plate 54 is fixedly connected between adjacent sampling plates 52. A vertical plate 55 is fixedly connected to the mixing frame 3. A connecting plate 56 is provided on one side of the vertical plate 55. The connecting plate 56 passes through the vertical plate 55, and both ends of the connecting plate 56 are fixedly connected to the horizontal plate 54. A second electric push rod 57 is fixedly connected to one side wall of the connecting plate 56, and one end of the second electric push rod 57 is fixedly connected to one side of the vertical plate 55. The second electric push rod 57 drives the connecting plate 56 to move after being extended and retracted.

[0033] A feeding mechanism 6 is provided on the top of the main plate 2, and the feeding mechanism 6 includes a feeding hopper 61. The feeding hopper 61 passes through the top wall of the main plate 2 and is slidably connected to the main plate 2. An L-shaped plate 62 is fixedly connected to the front side of the main plate 2, and a control block 63 is slidably connected to the inner side of the L-shaped plate 62. A push-pull rod 64 is movably connected to the top of the control block 63 through a movable hinge seat, and one end of the push-pull rod 64 is movably connected to a side wall of the feeding hopper 61 through a movable hinge seat. After the control block 63 moves, it drives the push-pull rod 64 to flip, and after the push-pull rod 64 flips, it pushes the feeding hopper 61. A third electric push rod 65 is fixedly connected to one side wall of the L-shaped plate 62, and one end of the third electric push rod 65 is fixedly connected to one side of the control block 63. After the third electric push rod 65 works, it pushes and pulls the control block 63.

[0034] In the actual operation process, the mixing device is first connected to the power supply, and the raw materials with good proportions are put into the mixing frame 3 through the through slot 43. When the raw materials are put in, the third electric push rod 65 works and pulls the control block 63. After the control block 63 moves, it drives the push-pull rod 64 to flip. After the push-pull rod 64 flips, it pulls the feed hopper 61 to cause the feed hopper 61 to move up and down. At this time, the feed hopper 61 descends so that the bottom of the feed hopper 61 can be closer to the through slot 43. Then the raw materials can be discharged into the through slot 43 through the feed hopper 61, so as to perform accurate feeding and avoid the raw materials falling on the outside of the mixing frame 3. When the feeding is completed, the feed hopper 61 is controlled to move up to avoid the feed hopper 61 from hindering the flipping of the mixing frame 3; After the third motor 474 works, it drives the transmission rod 473 to rotate, and the transmission rod 473 drives the fourth gear 475 to rotate, and the fourth gear 475 drives the second rack 476 to move, and the second rack 476 drives the cover plate 471 to move along the inner groove of the track plate 489. When the cover plate 471 moves to the outside of the through groove 43, it can provide a sealed shield for the through groove 43. After the cover plate 471 moves to one side of the through groove 43, raw materials can be fed into the through groove 43 or the mixed raw materials can be discharged through this place. When the feeding is completed, the cover plate 471 is controlled to move the through groove 43. The groove 43 is blocked, and then the second motor 482 works and drives the first gear 483 to rotate, the first gear 483 drives the second gear 484 to rotate, the second gear 484 drives the round rod 44 to rotate, and the round rod 44 drives the stirring main rod 46 to rotate. After the stirring main rod 46 rotates, the raw materials inside the mixing frame 3 are shoveled up, and the raw materials are shoveled up and fall from a high place. When falling, the blocking bar 49 on the inner side of the stirring main rod 46 will block the raw materials, causing the raw materials to fall in the gap between adjacent blocking bars 49, so as to subdivide and scatter, so as to enhance the mixing speed of each material; During the mixing and stirring process, the second electric push rod 57 can drive the connecting plate 56 to move after being extended or contracted, and the connecting plate 56 drives the horizontal plate 54 to move, and the horizontal plate 54 drives the sampling plate 52 to move. When the area outside the sampling slot 53 on the sampling plate 52 stays inside the placement seat 51, the bottom of the mixing frame 3 is in a sealed state. In order to enable the staff to timely understand the mixing status of the internal raw materials, the sampling plate 52 is controlled to move through the above steps to prompt the sampling slot 53 to be in the placement frame. At this time, the mixed material in the mixing frame 3 can fall into the sampling slot 53, and after the mixed material sample is collected in the sampling slot 53, the sampling plate 52 is controlled to move until the sampling slot 53 leaves the placement frame, and the user can check the mixed material in the sampling slot 53, which is conducive to the user to more directly grasp the mixing status, and the mixed materials in different sampling slots 53 further reflect the mixing status of different areas inside the mixing frame 3, avoiding the situation where the mixing degree is not uniform. Compared with traditional mixing, it is more conducive to intuitively grasping the mixing process because the internal mixing status cannot be properly understood manually. After the first electric push rod 488 works, it pushes and pulls the lifting plate 486 up and down, and the lifting plate 486 drives the first rack 487 to move, and the first rack 487 drives the third gear 485 to rotate, and the third gear 485 drives the connected connecting rod 42 to rotate, and the connecting rod 42 drives the supporting plate 41 to rotate, and the supporting plate 41 drives the mixing frame 3 to rotate. After the above work is completed for the sample inspection, the sampling slot 53 is controlled to move to the inside of the placement seat 51 again, and then the mixing frame 3 is controlled to rotate, so that the sampling plate 52 stays just above the mixing frame 3, and the sample in the sampling slot 53 will fall into the mixing frame 3 to continue to be mixed and stirred. When the mixing work is completed, the mixing frame 3 is controlled to rotate until the through slot 43 is just below the mixing frame 3, and the above steps are repeated to control the cover plate 471 to remove the shielding of the through slot 43. At this time, the mixed material can be discharged downward through the through slot 43. During the discharge process, the round rod 44 is continued to be controlled to rotate, and the stirring main rod 46 continues to scrape the inside of the mixing frame 3, so that the mixed material can be fully discharged downward; Since the mounting plate 491 is fixedly connected to the auxiliary plate 492, the mounting plate 491 does not rotate with the round rod 44, and the end connection position of the first swing rod 495 and the second swing rod 496 is always facing the position of the through groove 43. When discharging materials, in order to prevent the mixed material from adhering to the stirring main rod 46 and the baffle bar 49, the stirring main rod 46 is controlled to move to a position perpendicular to the through groove 43 and then stop, and then the first motor 499 works and drives the two-way threaded rod 493 to rotate, and the two-way threaded rod 493 drives the two moving blocks 494 to move towards each other, and after the two moving blocks 494 move, they respectively drive the first swing rod 495 and the second swing rod 496 to move. The two swing rods 496 swing, and at this time the end connection between the first swing rod 495 and the second swing rod 496 moves toward the contact rod 497 on the inner side of the stirring main rod 46 staying at the position of the through groove 43 and pushes the contact rod 497. After the contact rod 497 is subjected to the force, it drives the stirring main rod 46 to move. Since the spring 48 has an elastic pulling force on the stirring main rod 46, the elastic pulling force and the continuous thrust can cooperate to realize the rapid shaking of the stirring main rod 46, so as to shake off the mixture that may adhere to the stirring main rod 46 itself, ensure that the mixture can be fully discharged, and at the same time reduce the subsequent cleaning pressure.

[0035] The above are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A process for preparing manganese-zinc soft ferrite powder for automotive electronics, characterized in that: The following steps are involved: S1. Grinding the raw materials, grinding the raw materials of iron oxide, zinc oxide and manganese oxide respectively, and weighing them according to the proportion after grinding; S2. Material mixing, the raw materials are sequentially put into the mixing device to mix the ingredients, and at the same time, 3 to 5% of fine camphor powder is added; S3. Mixture sampling: during the mixing process, samples are taken from different areas of the mixing device. After sampling, the staff will judge the overall mixing situation and dry it after mixing. S4. Pre-sintering, pre-sintering the mixed dried material, and setting the temperature to between 850 and 980° C. during sintering; S5. Powder granulation, using a ball mill to grind the sintered material, and after grinding, using a spray granulation device to granulate the powder; The mixing device in step S2 and step S3 comprises a bottom plate (1), a main plate (2) is fixedly connected to the top of the bottom plate (1), a mixing frame (3) is arranged inside the main plate (2), and a material control mechanism (4) is arranged on the mixing frame (3); The material control mechanism (4) comprises two support plates (41), the two support plates (41) are respectively fixedly connected to the two side walls of the mixing frame (3), the two support plates (41) are both fixedly connected to a connecting rod (42), the two connecting rods (42) respectively penetrate the two side walls of the main plate (2) and are rotatably connected to the main plate (2), a through groove (43) is formed on the top of the mixing frame (3), a round rod (44) is rotatably connected inside the mixing frame (3), the round rod (44) extends outside the mixing frame (3), and a cavity (45) is formed on the round rod (44). A stirring main rod (46) is arranged outside the round rod (44), the outer side of the stirring main rod (46) contacts the inner cavity wall of the mixing frame (3), a positioning rod (47) is fixedly connected to the outer side of the round rod (44), the positioning rod (47) extends into the interior of the stirring main rod (46) and is slidably connected to the stirring main rod (46), a spring (48) is fixedly connected to the positioning rod (47), the spring (48) is fixedly connected to the interior of the stirring main rod (46), a retaining bar (49) is fixedly connected to the inner side of the stirring main rod (46), and the retaining bar (49) is fixedly connected to the stirring main rod (46). The inner sides of the round rods (46) are arranged at equal intervals, the inner side of the round rods (44) is rotatably connected to a mounting plate (491), a side wall of the mixing frame (3) is fixedly connected to an auxiliary plate (492), the mounting plate (491) extends outside the round rods (44), one side of the auxiliary plate (492) is fixedly connected to the inner side of the auxiliary plate (492), the inner side of the mounting plate (491) is rotatably connected to a bidirectional threaded rod (493), the inner side of the mounting plate (491) is slidably connected to two moving blocks (494), the bidirectional threaded rod (493) sequentially passes through the two moving blocks (494). A movable block (494) is provided, and the bidirectional threaded rod (493) is connected to the movable block (494) by threads, one of the movable blocks (494) is movably connected to a first swing rod (495) by a movable hinge seat, and the other movable block (494) is movably connected to a second swing rod (496) by a movable hinge seat, one end of the first swing rod (495) extends into the interior of the second swing rod (496), and the first swing rod (495) and the second swing rod (496) are connected by a rotating shaft, and a contact rod (497) is fixedly connected to the inner side of the stirring main rod (46).

2. The process for preparing a manganese-zinc soft ferrite powder for automotive electronics according to claim 1, characterized in that: The bidirectional threaded rod (493) extends out of the round rod (44); one end of the bidirectional threaded rod (493) is rotatably connected to the inside of the auxiliary plate (492); a circular baffle (498) is rotatably connected to the inside of the round rod (44); the mounting plate (491) passes through the circular baffle (498); the bidirectional threaded rod (493) passes through the circular baffle (498) and is rotatably connected to the circular baffle (498); a first motor (499) is fixedly connected to one side of the auxiliary plate (492); and the first motor (499) is fixedly connected to one end of the bidirectional threaded rod (493) via an output shaft.

3. The process for preparing a manganese-zinc soft ferrite powder for automotive electronics according to claim 1, characterized in that: A U-shaped plate (481) is fixedly connected to one side wall of the mixing frame (3); one end of the round rod (44) is rotatably connected to the inner side of the U-shaped plate (481); a second motor (482) is fixedly connected to one side of the U-shaped plate (481); the second motor (482) is fixedly connected to a first gear (483) via an output shaft; a second gear (484) is fixedly connected to the outside of the round rod (44); and the first gear (483) is meshed with the second gear (484).

4. The process for preparing a manganese-zinc soft ferrite powder for automotive electronics according to claim 1, characterized in that: One of the connecting rods (42) is fixedly connected to the outside with a third gear (485), a lifting plate (486) is slidably connected to a side wall of the support plate (41), a first rack (487) is fixedly connected to the lifting plate (486), the first rack (487) is arranged on the rear side of the third gear (485), and the first rack (487) is meshed with the third gear (485), a square plate is fixedly connected to a side wall of the support plate (41), a first electric push rod (488) is fixedly connected to the bottom of the square plate, and one end of the first electric push rod (488) is fixedly connected to the top of the lifting plate (486).

5. The process for preparing a manganese-zinc soft ferrite powder for automotive electronics according to claim 1, characterized in that: Track plates (489) are fixedly connected to both side walls of the mixing frame (3); a cover plate (471) is slidably connected between the two track plates (489); the cover plate (471) is in contact with the outer surface of the mixing frame (3); a frame plate (472) is arranged on the outer side of the mixing frame (3); two ends of the frame plate (472) are respectively fixedly connected to the two track plates (489).

6. The process for preparing a manganese-zinc soft ferrite powder for automotive electronics according to claim 5, characterized in that: A transmission rod (473) is rotatably connected to the inner side of the frame plate (472); a third motor (474) is fixedly connected to one side wall of the frame plate (472); the third motor (474) is fixedly connected to one end of the transmission rod (473) via an output shaft; two fourth gears (475) are fixedly connected to the outside of the transmission rod (473); and two second racks (476) are fixedly connected to the cover plate (471); the two second racks (476) are respectively meshed with the two fourth gears (475).

7. The process for preparing a manganese-zinc soft ferrite powder for automotive electronics according to claim 1, characterized in that: A sampling mechanism (5) is provided at the bottom of the mixing frame (3). The sampling mechanism (5) comprises a placement seat (51). The placement seat (51) is fixedly connected to the bottom of the mixing frame (3). A sampling plate (52) is provided at the bottom of the mixing frame (3). The sampling plate (52) penetrates the placement seat (51) and matches the placement seat (51). A sampling slot (53) is provided on the sampling plate (52). The sampling slot (53) is communicated with the mixing frame (3). A horizontal plate (54) is fixedly connected between adjacent sampling plates (52). A vertical plate (55) is fixedly connected to the mixing frame (3). A connecting plate (56) is provided on one side of the vertical plate (55). The connecting plate (56) penetrates the vertical plate (55), and both ends of the connecting plate (56) are fixedly connected to the horizontal plate (54). A second electric push rod (57) is fixedly connected to one side wall of the connecting plate (56). One end of the second electric push rod (57) is fixedly connected to one side of the vertical plate (55).

8. The process for preparing a manganese-zinc soft ferrite powder for automotive electronics according to claim 1, characterized in that: A feeding mechanism (6) is provided at the top of the main body plate (2), and the feeding mechanism (6) comprises a feeding hopper (61), the feeding hopper (61) penetrates the top wall of the main body plate (2) and is slidably connected to the main body plate (2), an L-shaped plate (62) is fixedly connected to the front side of the main body plate (2), a control block (63) is slidably connected to the inner side of the L-shaped plate (62), a push-pull rod (64) is movably connected to the top of the control block (63) via a movable hinge seat, and one end of the push-pull rod (64) is movably connected to a side wall of the feeding hopper (61) via a movable hinge seat.

9. The process for preparing a manganese-zinc soft ferrite powder for automotive electronics according to claim 8, characterized in that: A third electric push rod (65) is fixedly connected to one side wall of the L-shaped plate (62), and one end of the third electric push rod (65) is fixedly connected to one side of the control block (63).

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