An automated production line for preparing permanent magnet ferrite

Abstract

This invention relates to the field of magnetic material manufacturing and discloses an automated production line for preparing permanent magnet ferrites. The production line includes a feeding machine, a ball mill, a discharging machine, a settling tower, a slurry dewatering machine, a material injection mechanism, a mold forming press, a billet extractor, a billet stacking and moving mechanism, a billet conveying line, a roller kiln, and a controller. This automated production line for preparing permanent magnet ferrites features a high degree of automation, fast production speed, and produces higher quality permanent magnet ferrites, making it valuable for widespread application.

Description

Technical Field

[0001] This invention belongs to the field of magnetic material manufacturing, specifically relating to an automated production line for preparing permanent magnet ferrite. Background Technology

[0002] Magnetic materials are fundamental functional materials in the electronics industry. Permanent magnet materials, as an important component of magnetic materials, play a vital role in industries such as electronics, information technology, motorcycles, power tools, and automobiles. Permanent magnet ferrite materials are functional materials that generate magnetic fields.

[0003] The preparation process of permanent magnet ferrites includes raw material selection, mixing, molding, sintering, and magnetization. The main components of permanent magnet ferrites are iron oxide and rare earth elements. The selection of rare earth elements is crucial; common ones include titanium, zirconia, and tin. The choice of rare earth elements affects the performance of the permanent magnet ferrite. In addition, a certain amount of auxiliary materials, such as iron carbonate and calcium carbonate, need to be added to adjust the conductivity of the material. The purpose of mixing is to evenly distribute rare earth elements and other auxiliary elements. Generally, ball milling or dry mixing is used. Ball milling involves mixing the raw materials with several milling media in a ball mill jar, using the collision of the balls to evenly disperse the raw materials. Dry mixing involves placing the raw materials in a dryer and mixing them by stirring. Molding includes wet pressing and dry pressing. Wet pressing involves adding a certain amount of solvent to the mixed raw materials to form a slurry, which is then shaped by extrusion, injection molding, etc. Dry pressing involves placing the raw materials directly into a mold, using vibration or pressure to tightly pack the materials into the desired shape. Then comes the sintering and magnetization process. Sintering involves heating the shaped blank at high temperatures to cause a solid-phase reaction in its particles, forming a dense structure. Magnetization involves placing the sintered sample in a magnetizing coil and briefly applying an electric current to magnetize it.

[0004] Existing permanent magnet ferrite production lines have low levels of automation, slow production efficiency, and produce permanent magnet ferrite of poor quality. Summary of the Invention

[0005] In view of this, the purpose of this invention is to provide an automated production line for preparing permanent magnet ferrites. This invention aims to solve the problems of low automation, slow production efficiency, and poor quality of the prepared permanent magnet ferrites in existing production lines.

[0006] To achieve the above objectives, the present invention provides an automated production line for preparing permanent magnet ferrite, including a feeding machine, a ball mill, a discharging machine, a settling tower, a slurry dewatering machine, a material injection mechanism, a mold forming press, a billet taking machine, a billet stacking and moving mechanism, a billet conveying line, and a roller electric kiln.

[0007] The ball mill's feed end is connected to a feeder via a pipe, and the ball mill's discharge end is connected to a discharge machine via a pipe. The ball mill is used to pulverize mixed raw materials.

[0008] The feed end of the settling tower is connected to the discharge machine through a pipeline, and the discharge end of the settling tower is connected to the slurry dewatering machine through a pipeline. A mud pump is installed in the pipeline between the settling tower and the slurry dewatering machine. The settling tower is used to settle the mixed raw materials mixed in the solvent to obtain mixed raw material slurry.

[0009] The slurry dewatering machine is used to dewater the mixed raw material slurry discharged from the settling tower;

[0010] The feeding end of the injection mechanism is connected to the slurry dewatering machine, and the discharging end of the injection mechanism is directly opposite the mold forming press. The injection mechanism is used to inject the dewatered mixed raw material slurry into the mold groove of the mold forming press.

[0011] Multiple mold forming presses are provided on one side of the billet conveying line. Each mold forming press corresponds to a billet taking machine and a billet stacking and moving mechanism.

[0012] The mold forming press is used to press the mixed raw material slurry in the mold groove into green blanks;

[0013] The billet extractor is located behind the mold forming press. The billet extractor is used to remove the green billet pressed by the mold forming press and place it on the billet stacking and moving mechanism.

[0014] The billet stacking and moving mechanism is used to move the stacked green billets to the billet conveying line;

[0015] The billet conveying line runs through the roller kiln and is used to move green billets into the roller kiln.

[0016] The roller kiln is used for sintering green billets;

[0017] The automated production line is also equipped with a controller, and the feeder, ball mill, discharge machine, settling tower, mud pump, slurry dewatering machine, injection mechanism, mold forming press, billet taking machine, billet stacking and moving mechanism, billet conveying line and roller electric kiln are all electrically connected to the controller.

[0018] Furthermore, the injection mechanism includes a first storage tank, a second storage tank, a third storage tank, and a stirring assembly corresponding to each mold forming press. The first, second, and third storage tanks are all connected to the discharge end of the slurry dewatering machine. The first storage tank is connected to a first feeding pipe, the second storage tank is connected to a second feeding pipe, and the third storage tank is connected to a third feeding pipe. Each of the first, second, and third feeding pipes is equipped with a hydraulic pump station, a solvent additive, an auxiliary material additive, and a pressure sensor. The stirring assembly corresponding to each mold forming press is connected to one or two of the first, second, and third feeding pipes. The stirring assembly is used to stir and disperse the dewatered mixed raw material slurry and can inject the stirred mixed raw material slurry into the mold groove of the corresponding mold forming press.

[0019] This structural design allows the mixed raw material slurry to be processed by the injection mechanism and injected into the corresponding mold groove; the internal pressure of the first, second and third feeding pipes can be monitored in real time by pressure sensors.

[0020] Furthermore, the mixing assembly includes a housing with a mixing tank inside. A feed pipe communicating with the mixing tank is located on the upper side of the housing. The feed pipe is connected to one or two of a first, second, and third feeding pipe. A first feed control valve is provided at the end of each of the first, second, and third feeding pipes near the feed pipe. A second feed control valve is provided on the feed pipe. A rotating shaft is located inside the mixing tank, with mixing blades at the lower part of the shaft. A power unit is connected to the upper end of the rotating shaft, passing through the housing. The power unit drives the rotating shaft to rotate. A grouting pipe communicating with the bottom of the mixing tank is located on one side of the housing. A grouting pump is provided on the grouting pipe, and a discharge control valve is provided at the discharge end of the grouting pipe. The discharge end of the grouting pipe is directly opposite the mold slot of the corresponding mold forming press. A weighing mechanism is located at the bottom of the housing.

[0021] This structural design allows the dehydrated mixed raw material slurry to be stirred and dispersed by the stirring component, and the stirred mixed raw material slurry can be injected into the mold groove of the corresponding mold forming press.

[0022] Furthermore, the weighing mechanism includes a support base for carrying the box, and a weight measuring instrument and four evenly distributed weighing sensors are provided on the upper side of the support base corresponding to the position of the box. A weighing instrument is provided on one side of the support base. The weighing instrument is electrically connected to the weight measuring instrument and the weighing sensors through a junction box, and the weighing instrument is electrically connected to the controller.

[0023] This structural design allows the weight of the material being mixed to be obtained in real time via a weighing mechanism, enabling timely addition of mixing materials to the mixing tank.

[0024] Furthermore, the mixing mechanism is provided with a first return hopper, a second return hopper, and a third return hopper on one side. The first return hopper is provided with a first return pipe connected to the discharge end of the first feeding pipe, and a first return valve is provided on the first return pipe. The second return hopper is provided with a second return pipe connected to the discharge end of the second feeding pipe, and a second return valve is provided on the second return pipe. The third return hopper is provided with a third return pipe connected to the discharge end of the third feeding pipe, and a third return valve is provided on the third return pipe. The first, second, and third return valves are all pneumatic ball valves, and the first, second, and third return valves are electrically connected to the controller.

[0025] This structural design can reduce pipe bursts caused by blockages at the end of the pipe through the return hopper.

[0026] Furthermore, the mold forming press includes a base platform with a mold groove on the base platform. A base plate is slidably connected in the mold groove. A first lifting rod is provided on the base platform at the center of the base plate. The upper end of the first lifting rod is fixedly connected to the base plate. A bracket is provided on the base platform, and a second lifting rod is provided on the bracket, directly opposite the first lifting rod. A pressure plate is fixedly connected to the lower end of the second lifting rod. The pressure plate cooperates with the mold groove. A material level detection sensor is provided on one side of the base platform.

[0027] This structural design allows the mixed raw material slurry in the mold groove to be pressed by the second lifting rod and the pressure plate. After the blank is pressed, the blank is lifted by the first lifting rod and the bottom plate so that the blank can be removed by the blank removal machine. The material level detection sensor can detect the material height of the mixed raw material in the mold groove of the mold forming press in real time. When the mixed raw material in the mold groove reaches the target height, the discharge control valve on the injection pipe is closed to stop the injection.

[0028] Furthermore, both the mold groove and the pressure plate on the mold forming press can be detachably connected.

[0029] This structural design allows for the replacement of mold slots and pressure plates of different shapes and specifications as needed, making it more versatile.

[0030] Furthermore, the billet stacking and moving mechanism includes a loading plate, an electric trolley, and a handling robot. The electric trolley is used to move the loading plate with stacked green billets from the mold forming press to the billet conveying line, and the handling robot is used to move the loading plate with green billets on the electric trolley to the billet conveying line.

[0031] This structural design allows the stacked green billets to be automatically moved to the billet conveying line via a billet stacking and moving mechanism.

[0032] Furthermore, heating furnace wires are alternately arranged on the upper and lower sides of the inner cavity of the roller kiln.

[0033] This structural design allows for thorough heating of the billets inside the roller kiln.

[0034] Furthermore, the mold forming press, billet taking machine, billet stacking and moving mechanism, billet conveying line and roller electric kiln are located in the workshop, which is equipped with an exhaust system and a drainage system.

[0035] This structural design reduces the interference of the external environment on the production of permanent magnet ferrite in the workshop, the exhaust system facilitates ventilation, and the drainage system facilitates the discharge of wastewater generated during the pressing of the blank.

[0036] Beneficial effects:

[0037] 1. The present invention provides an automated production line for preparing permanent magnet ferrite, which includes a feeding machine, a ball mill, a discharging machine, a settling tower, a slurry dewatering machine, a material injection mechanism, a mold forming press, a billet taking machine, a billet stacking and moving mechanism, a billet conveying line, a roller electric kiln, and a controller. It has a high degree of automation, a fast production rate, and produces higher quality permanent magnet ferrite, and has promotion and application value.

[0038] 2. The automated production line for preparing permanent magnet ferrite of the present invention includes a slurry dewatering machine, a first storage tank, a second storage tank, a third storage tank, a mixing assembly, a first feeding pipe, a second feeding pipe, a third feeding pipe, a hydraulic pump station, a controller, a mixing tank, a feed pipe, mixing blades, a weighing sensor, a weighing instrument, a junction box, and a material level detection sensor. It can fully remove moisture from the mixed raw materials. In the subsequent injection process, the mixing assembly stirs and disperses the pre-injected mixed raw material slurry. During injection, the material level detection sensor detects the material height of the mixed raw material slurry in the mold tank in real time, resulting in more accurate raw material injection and higher quality of the manufactured molding modules.

[0039] 3. The automated production line for preparing permanent magnet ferrite of the present invention is equipped with a weighing sensor, a weighing instrument, a junction box and a pneumatic ball valve. The weight of the material at the mixing level can be obtained in real time through the weighing mechanism so as to feed the material to the mixing station with a small amount of mixed raw materials in a timely manner and stop feeding to the mixing station with a large amount of mixed raw materials. The operation is simple and the degree of automation is high.

[0040] 4. The mold forming press of the present invention is provided with a base platform, a mold groove, a base plate, a first lifting rod, a bracket, a second lifting rod, and a pressure plate. The mold groove and the pressure plate can be detachably connected, and different shapes and specifications of mold grooves and pressure plates can be replaced according to needs, making it more versatile. After the blank is pressed, the blank can be lifted by the first lifting rod so that the blank can be removed by the blank removal machine, resulting in higher blank integrity.

[0041] Other advantages, objectives, and features of the invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination, or may be learned from practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following description. Attached Figure Description

[0042] Figure 1 This is a schematic diagram of an automated production line for preparing permanent magnet ferrite according to the present invention;

[0043] Figure 2 This is a schematic diagram of the injection mechanism;

[0044] The attached diagram is labeled as follows: 1. Slurry dewatering machine; 2. First storage tank; 3. Second storage tank; 4. Third storage tank; 5. Mold forming press; 6. Mixing assembly; 7. Settling tower; 8. First feeding pipe; 9. Second feeding pipe; 10. Third feeding pipe; 11. Hydraulic pump station; 12. Controller; 13. Mixing tank; 14. Feed pipe; 15. Mixing blade; 16. Weighing sensor; 17. Weighing instrument; 18. Junction box; 19. First return hopper; 20. Second return hopper; 21. Third return hopper; 22. Compressed air pipe; 23. Feeder; 24. Ball mill; 25. Discharge machine; 26. Billet taking machine; 27. Billet stacking and moving mechanism; 28. Billet conveying line; 29. ​​Roller electric kiln. Detailed Implementation

[0045] To make the technical solutions, advantages, and objectives 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, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the described embodiments of the present invention without creative effort are within the protection scope of this application.

[0046] like Figure 1-2 As shown, the present invention provides an automated production line for preparing permanent magnet ferrite, including a feeding machine 23, a ball mill 24, a discharging machine 25, a settling tower 7, a slurry dewatering machine 1, a feeding mechanism, a mold forming press 5, a billet taking machine 26, a billet stacking and moving mechanism 27, a billet conveying line 28, and a roller electric kiln 29.

[0047] This embodiment is provided with two ball mills 24. The feed ends of both ball mills 24 are connected to the feeder 23 through pipes, and the discharge ends of both ball mills 24 are connected to the discharge machine 25 through pipes. The ball mills 24 are used to crush the mixed raw materials.

[0048] This embodiment is provided with eight settling towers 7. The feed ends of the eight settling towers 7 are all connected to the discharge machine 25 through pipes, and the discharge ends of the eight settling towers 7 are all connected to the slurry dewatering machine 1 through pipes. A mud pump is installed on the pipe between the settling towers 7 and the slurry dewatering machine 1. The settling towers 7 are used to settle the mixed raw materials mixed in the solvent, thereby obtaining mixed raw material slurry.

[0049] The slurry dewatering machine 1 is used to dewater the mixed raw material slurry discharged from the settling tower 7;

[0050] The feeding end of the injection mechanism is connected to the slurry dewatering machine 1, and the discharging end of the injection mechanism is directly opposite the mold forming press 5. The injection mechanism is used to inject the dewatered mixed raw material slurry into the mold groove of the mold forming press 5.

[0051] In this embodiment, twelve mold forming presses 5 are provided on the right side of the billet conveying line 28, and one mold forming press 5 corresponds to one billet taking machine 26 and one billet stacking and moving mechanism 27.

[0052] The mold forming press 5 is used to press the mixed raw material slurry in the mold groove into green blanks;

[0053] The billet taker 26 is located behind the mold forming press 5. The billet taker 26 is used to take out the green billet pressed by the mold forming press 5 and place the green billet on the billet stacking and moving mechanism 27.

[0054] The billet stacking and moving mechanism 27 is used to move the stacked green billets onto the billet conveying line 28;

[0055] The billet conveyor line 28 passes through the roller electric kiln 29 and is used to move the green billet into the roller electric kiln 29.

[0056] Roller kiln 29 is used for sintering green billets;

[0057] The automated production line is also equipped with a controller 12, and the following components are electrically connected to the controller 12: feeding machine 23, ball mill 24, discharging machine 25, settling tower 7, mud pump, slurry dewatering machine 1, injection mechanism, mold forming press 5, billet taking machine 26, billet stacking and moving mechanism 27, billet conveying line 28, and roller electric kiln 29.

[0058] As a preferred embodiment, the injection mechanism includes a first storage tank 2, a second storage tank 3, a third storage tank 4, and a stirring assembly 6 corresponding to each mold forming press 5. The first storage tank 2, the second storage tank 3, and the third storage tank 4 are all connected to the discharge end of the slurry dewatering machine 1. The first storage tank 2 is connected to a first feeding pipe 8, the second storage tank 3 is connected to a second feeding pipe 9, and the third storage tank 4 is connected to a third feeding pipe 10. A hydraulic pump station 11, a solvent additive, an auxiliary material additive, and a pressure sensor are installed on the first feeding pipe 8, the second feeding pipe 9, and the third feeding pipe 10. The stirring assembly 6 corresponding to each mold forming press 5 is connected to one or two of the first feeding pipe 8, the second feeding pipe 9, and the third feeding pipe 10. The stirring assembly 6 is used to stir and disperse the dewatered mixed raw material slurry and can inject the stirred mixed raw material slurry into the mold groove of the corresponding mold forming press 5. In this embodiment, 12 stirring components 6 are arranged from left to right. The first and second stirring components 6 are connected to the second feeding pipe 9 and the third feeding pipe 10. The third, fifth, and sixth stirring components 6 are connected to the first feeding pipe 8 and the second feeding pipe 9. The fourth stirring component 6 is connected to the first feeding pipe 8 and the third feeding pipe 10. The seventh and tenth stirring components 6 are connected to the third feeding pipe 10. The eighth, ninth, eleventh, and twelfth stirring components 6 are connected to the first feeding pipe 8.

[0059] The mixing assembly 6 includes a housing with a mixing tank 13 inside. A feed pipe 14 communicating with the mixing tank 13 is installed on the upper side of the housing. The feed pipe 14 is connected to one or two of the first feed pipe 8, the second feed pipe 9, and the third feed pipe 10. A first feed control valve is installed at the end of the first feed pipe 8, the second feed pipe 9, and the third feed pipe 10 near the feed pipe 14. A second feed control valve is installed on the feed pipe 14. A rotating shaft is rotatably connected inside the mixing tank 13. A mixing blade 15 is fixedly connected to the lower part of the rotating shaft. A power unit is connected to the upper end of the rotating shaft through the housing. In this embodiment, the power unit is a motor, which drives the rotating shaft to rotate. A material injection pipe communicating with the bottom of the mixing tank 13 is installed on the side of the housing near the mold slot. A material injection pump is installed on the material injection pipe. A discharge control valve is installed at the discharge end of the material injection pipe. The discharge end of the material injection pipe is directly opposite the mold slot of the corresponding mold forming press 5. A weighing mechanism is provided at the bottom of the housing.

[0060] The weighing mechanism includes a support base for carrying the box. A weight meter and four evenly distributed weighing sensors 16 are installed on the upper side of the support base corresponding to the position of the box. A weighing instrument 17 is installed on the front side of the support base. The weighing instrument 17 is electrically connected to the weight meter and the weighing sensors 16 through a junction box 18. The weighing instrument 17 is also electrically connected to the controller 12.

[0061] The right side of the mixing mechanism is provided with a first return hopper 19, a second return hopper 20, and a third return hopper 21. The first return hopper 19 is equipped with a first return pipe that is connected to the discharge end of the first feeding pipe 8, and a first return valve is installed on the first return pipe. The second return hopper 20 is equipped with a second return pipe that is connected to the discharge end of the second feeding pipe 9, and a second return valve is installed on the second return pipe. The third return hopper 21 is equipped with a third return pipe that is connected to the discharge end of the third feeding pipe 10, and a third return valve is installed on the third return pipe. The first, second, and third return valves are all pneumatic ball valves, and the first, second, and third return valves are electrically connected to the controller 12.

[0062] In a preferred embodiment, the mold forming press 5 includes a base platform, a mold groove is fixedly connected to the base platform, a base plate is slidably connected inside the mold groove, a first lifting rod is installed on the base platform corresponding to the center of the base plate, the upper end of the first lifting rod is fixedly connected to the base plate, a bracket is fixedly connected to the base platform, a second lifting rod is provided on the bracket facing the first lifting rod, a pressure plate is fixedly connected to the lower end of the second lifting rod, the pressure plate cooperates with the mold groove, and a material level detection sensor is installed on the base platform.

[0063] As a preferred embodiment, the mold groove and the pressure plate on the mold forming press 5 can be detachably connected.

[0064] As a preferred embodiment, the billet stacking and moving mechanism 27 includes a loading plate, an electric trolley, and a handling robot. The electric trolley is used to move the loading plate with stacked green billets from the mold forming press 5 to the billet conveying line 28, and the handling robot is used to move the loading plate with green billets on the electric trolley to the billet conveying line 28.

[0065] As a preferred embodiment, heating wires are alternately arranged on the upper and lower sides of the inner cavity of the roller kiln 29.

[0066] As a preferred embodiment, the mold forming press 5, the billet taking machine 26, the billet stacking and moving mechanism 27, the billet conveying line 28 and the roller electric kiln 29 are located in the workshop, and the workshop is equipped with an exhaust system and a drainage system.

[0067] As a preferred embodiment, the second feed control valve, the first return valve, the second return valve and the third return valve are all connected to a compressed air pipe 22. A solenoid valve is installed at the outlet end of the compressed air pipe 22, and the solenoid valve is electrically connected to the controller 12.

[0068] The operation process of the automated production line for preparing permanent magnet ferrites according to the present invention is as follows:

[0069] First, select the raw materials and pour them into the feeder 23. The feeder 23 conveys the raw materials to the ball mill 24. The ball mill 24 crushes and mixes the raw materials and then conveys them to the discharge machine 25. The discharge machine 25 conveys the raw materials to the settling tower 7. The mixed raw materials are mixed with the solvent in the settling tower 7. After settling for a period of time, a mixed raw material slurry is obtained.

[0070] Then, the mixed raw material slurry discharged from the settling tower 7 is transported to the slurry dewatering machine 1 via a mud pump. The slurry dewatering machine 1 dewaters the mixed raw material, and the dewatered raw material is divided into three parts, which are discharged to the first storage tank 2, the second storage tank 3, and the third storage tank 4 respectively. Then, the solvent additive and auxiliary material additive are started to add the target solvent and auxiliary material to the corresponding storage tanks. After that, the hydraulic pump station 11 is started, and the mixed raw material slurry in the first storage tank 2, the second storage tank 3, and the third storage tank 4 is transported to the target storage tanks through the first feeding pipe 8, the second feeding pipe 9, and the third feeding pipe 10. The mixing mechanism is set up; then the motor is started, and the motor drives the rotating shaft and the mixing blade 15 to rotate, thereby mixing the mixed raw material slurry in the mixing tank 13. After the mixing is fully completed, the injection pump is started, and the mixed raw material slurry at the bottom of the mixing tank 13 is injected into the mold groove of the corresponding mold forming press 5 through the injection pipe. The material level detection sensor detects the height of the mixed raw material in the mold groove in real time. When the mixed raw material in the mold groove reaches the target height, the discharge control valve on the injection pipe is closed to stop the injection. Then the mold forming press 5 is started to press the mixed raw material slurry in the mold groove into shape.

[0071] When the mixing component 6 mixes the raw material slurry, the weighing mechanism weighs the mixing material level in real time through the weighing meter and the weighing sensor 16 to obtain the storage amount of the mixed raw material slurry in the 12 mixing stations. Then, according to the situation or the set program, the target pneumatic ball valve is opened to feed the mixing station with a small amount of mixed raw material slurry and to stop feeding the mixing station with a large amount of mixed raw material slurry. The operation is simple and the degree of automation is high.

[0072] When the mold forming press 5 presses the mixed raw material slurry, the second lifting rod is activated to move the pressure plate towards the mold groove, thereby pressing the mixed raw material slurry in the mold groove to finally produce green billets. Then, the first lifting rod is activated to move the bottom plate and green billets upward so that the billet taker 26 can take the billets, thereby stacking the billets on the loading plate. After a batch of billets is stacked, the electric trolley is activated to move the loading plate with the stacked green billets towards the billet conveying line 28. Then, the loading plate with the stacked green billets is placed on the billet conveying line 28 by the handling robot. The loading plate with the green billets is moved to the roller electric kiln 29 under the conveying action of the billet conveying line 28, thereby heating the green billets. The sintered billets are moved out of the roller electric kiln 29 with the billet conveying line 28 to await the subsequent magnetization process.

[0073] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the present invention, and all such modifications or substitutions should be covered within the protection scope of the present invention.

Claims

1. An automated production line for preparing permanent magnet ferrite, characterized in that: It includes a feeding machine, ball mill, discharge machine, settling tower, slurry dewatering machine, injection mechanism, mold forming press, billet taking machine, billet stacking and moving mechanism, billet conveying line and roller electric kiln; The ball mill's feed end is connected to a feeder via a pipe, and the ball mill's discharge end is connected to a discharge machine via a pipe. The ball mill is used to pulverize mixed raw materials. The feed end of the settling tower is connected to the discharge machine through a pipeline, and the discharge end of the settling tower is connected to the slurry dewatering machine through a pipeline. A mud pump is installed in the pipeline between the settling tower and the slurry dewatering machine. The settling tower is used to settle the mixed raw materials mixed in the solvent to obtain mixed raw material slurry. The slurry dewatering machine is used to dewater the mixed raw material slurry discharged from the settling tower; The feeding end of the injection mechanism is connected to the slurry dewatering machine, and the discharging end of the injection mechanism is directly opposite the mold forming press. The injection mechanism is used to inject the dewatered mixed raw material slurry into the mold groove of the mold forming press. Multiple mold forming presses are provided on one side of the billet conveying line. Each mold forming press corresponds to a billet taking machine and a billet stacking and moving mechanism. The mold forming press is used to press the mixed raw material slurry in the mold groove into green blanks; The billet extractor is located behind the mold forming press. The billet extractor is used to remove the green billet pressed by the mold forming press and place it on the billet stacking and moving mechanism. The billet stacking and moving mechanism is used to move the stacked green billets to the billet conveying line; The billet conveying line runs through the roller kiln and is used to move green billets into the roller kiln. The roller kiln is used for sintering green billets; The automated production line is also equipped with a controller, and the feeding machine, ball mill, discharge machine, settling tower, mud pump, slurry dewatering machine, injection mechanism, mold forming press, billet taking machine, billet stacking and moving mechanism, billet conveying line and roller electric kiln are all electrically connected to the controller.

2. The automated production line for preparing permanent magnet ferrite according to claim 1, characterized in that: The material injection mechanism includes a first storage tank, a second storage tank, a third storage tank, and a stirring assembly corresponding to each mold forming press. The first, second, and third storage tanks are all connected to the discharge end of the slurry dewatering machine. The first storage tank is connected to a first feeding pipe, the second storage tank is connected to a second feeding pipe, and the third storage tank is connected to a third feeding pipe. Each of the first, second, and third feeding pipes is equipped with a hydraulic pump station, a solvent additive, an auxiliary material additive, and a pressure sensor. The stirring assembly corresponding to each mold forming press is connected to one or two of the first, second, and third feeding pipes. The stirring assembly is used to stir and disperse the dewatered mixed raw material slurry and can inject the stirred mixed raw material slurry into the mold groove of the corresponding mold forming press.

3. The automated production line for preparing permanent magnet ferrite according to claim 2, characterized in that: The mixing assembly includes a housing with a mixing tank inside. A feed pipe communicating with the mixing tank is located on the upper side of the housing. The feed pipe is connected to one or two of a first, second, and third feeding pipe. A first feed control valve is provided at the end of each of the first, second, and third feeding pipes near the feed pipe. A second feed control valve is provided on the feed pipe. A rotating shaft is located inside the mixing tank, with mixing blades at the lower part of the shaft. A power unit is connected to the upper end of the rotating shaft, passing through the housing, and is used to drive the rotating shaft to rotate. A material injection pipe communicating with the bottom of the mixing tank is located on one side of the housing. A material injection pump is provided on the material injection pipe, and a discharge control valve is provided at the discharge end of the material injection pipe. The discharge end of the material injection pipe is directly opposite the mold slot of the corresponding mold forming press. A weighing mechanism is located at the bottom of the housing.

4. The automated production line for preparing permanent magnet ferrite according to claim 3, characterized in that: The weighing mechanism includes a support base for carrying the box. A weighing meter and four evenly distributed weighing sensors are provided on the upper side of the support base corresponding to the position of the box. A weighing instrument is provided on one side of the support base. The weighing instrument is electrically connected to the weighing meter and the weighing sensors through a junction box. The weighing instrument is also electrically connected to the controller.

5. An automated production line for preparing permanent magnet ferrites according to claim 3, characterized in that: The mixing assembly has a first return hopper, a second return hopper, and a third return hopper on one side. The first return hopper has a first return pipe connected to the discharge end of the first feeding pipe, and a first return valve is installed on the first return pipe. The second return hopper has a second return pipe connected to the discharge end of the second feeding pipe, and a second return valve is installed on the second return pipe. The third return hopper has a third return pipe connected to the discharge end of the third feeding pipe, and a third return valve is installed on the third return pipe. The first, second, and third return valves are all pneumatic ball valves, and the first, second, and third return valves are electrically connected to the controller.

6. An automated production line for preparing permanent magnet ferrites according to claim 1, characterized in that: The mold forming press includes a base platform with a mold groove on the base platform. A base plate is slidably connected in the mold groove. A first lifting rod is provided on the base platform at the center of the base plate. The upper end of the first lifting rod is fixedly connected to the base plate. A bracket is provided on the base platform, and a second lifting rod is provided on the bracket, which is directly opposite the first lifting rod. A pressure plate is fixedly connected to the lower end of the second lifting rod. The pressure plate cooperates with the mold groove. A material level detection sensor is provided on one side of the base platform.

7. An automated production line for preparing permanent magnet ferrites according to claim 6, characterized in that: Both the mold slot and the pressure plate on the mold forming press can be detached and connected.

8. An automated production line for preparing permanent magnet ferrite according to claim 1, characterized in that: The billet stacking and moving mechanism includes a loading plate, an electric trolley, and a handling robot. The electric trolley is used to move the loading plate with stacked green billets from the mold forming press to the billet conveying line, and the handling robot is used to move the loading plate with green billets on the electric trolley to the billet conveying line.

9. An automated production line for preparing permanent magnet ferrite according to claim 1, characterized in that: Heating furnace wires are staggered on the upper and lower sides of the inner cavity of the roller kiln.

10. An automated production line for preparing permanent magnet ferrite according to claim 1, characterized in that: The mold forming press, billet taking machine, billet stacking and moving mechanism, billet conveying line and roller electric kiln are located in the workshop, which is equipped with an exhaust system and a drainage system.

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