A magnetic core debinding sintering system and sintering method

Abstract

The present invention relates to the technical field of magnetic core sintering, and specifically to a magnetic core debinding sintering system and a sintering method, comprising a sintering kiln body, a furnace door, a furnace bed, a material withdrawal trough and a base, wherein the furnace door is installed on the front side of the sintering kiln body, the furnace bed is installed in the inner cavity of the sintering kiln body, the material withdrawal trough is opened on the upper surface of the furnace bed, the base is in the material withdrawal trough, and a hot air circulation component is provided on the sintering kiln body, and the hot air circulation component includes a circulation pipe, and the circulation pipe is provided on the outer peripheral side of the sintering kiln body except the bottom. The magnetic core debinding sintering system and the sintering method can make the bottom of the magnetic core uniformly heated through the mutual cooperation between the temperature equalizing component and the vibration component, further improve the sintering effect, and make the vibration ball touch the material withdrawal trough, so that the connection between the base and the material withdrawal trough vibrates slightly, thereby avoiding the solid residue condensed after debinding from adhering the base and the material withdrawal trough, causing the problem of difficulty in withdrawing material.

Description

Technical Field

[0001] The present invention relates to the technical field of magnetic core sintering, and in particular to a magnetic core debinding sintering system and a sintering method. Background Art

[0002] Magnetic core is a basic material for the electronics, electromechanical, and factory industries with wide applications, high output, and low cost. It has high magnetic permeability, high resistivity, low loss, and ceramic wear resistance. During the sintering process of the magnetic core, if the heat distribution in the kiln is uneven, it can easily lead to poor debinding effect, resulting in poor consistency of the sintered magnetic core. Therefore, the magnetic core is often prone to debinding and cracking during the sintering process.

[0003] In response to the situation where the magnetic core cracks due to debinding due to uneven temperature during sintering, we previously proposed a notice numbered CN110260654B, with the subject name being a debinding and sintering device for large-size magnetic cores and a manufacturing method thereof. The sintering operation is completed by heating the air in the kiln body, and a circulating fan is used to circulate the hot air, thereby making the temperature of the air in the kiln body uniform and improving the sintering effect. However, during subsequent use, we found that when the circulating fan is only set on one side of the kiln body, the magnetic core close to the circulating fan is exposed to the most hot air during air circulation, which can easily cause the magnetic core to be over-sintered and cracked. Summary of the Invention

[0004] In view of the deficiencies in the prior art, the present invention provides a magnetic core debinding and sintering system and a sintering method, which solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a magnetic core debinding and sintering system, comprising a sintering kiln body, a furnace door, a hearth, a material withdrawal chute and a base, wherein the furnace door is installed on the front of the sintering kiln body, the hearth is installed in the inner cavity of the sintering kiln body, the material withdrawal chute is opened on the upper surface of the hearth, the base is located in the material withdrawal chute, and a hot air circulation component is provided on the sintering kiln body, and the hot air circulation component includes a circulation pipe, which is arranged on the outer peripheral side of the sintering kiln body except the bottom, high-temperature heat circulation fans are installed on both sides of the circulation pipe, heating boxes are installed on both sides of the circulation pipe, and the bottom of the circulation pipe is connected to a high-temperature pipe, which is fixed in the inner cavity of the sintering kiln body and is located below the hearth;

[0006] The high-temperature pipe is connected to an air inlet pipe above, and the upper side of the circulation pipe is connected to an air outlet pipe, and the air outlet pipe is located above the high-temperature pipe;

[0007] The sintering kiln body is provided with a pressure equalizing component, and the pressure equalizing component is used to improve the sintering effect.

[0008] Optionally, the pressure equalizing assembly includes a high-temperature air inlet plate, which is fixedly installed in the inner cavity of the sintering kiln body and is located above the hearth. The number of the high-temperature air inlet plates is five, and they are evenly and equidistantly distributed in the inner cavity of the sintering kiln body. Two high-temperature air inlet plates close to the inner cavity wall of the sintering kiln body are in contact with the inner cavity wall of the sintering kiln body.

[0009] Both sides of the high-temperature air inlet plate are provided with injection holes, and the inner cavity of the high-temperature air inlet plate is connected with the inner cavity of the sintering kiln body through the injection holes. Support columns are fixedly installed at the four corners of both sides of the high-temperature air inlet plate, and a limit block is fixedly installed on the end of the support column away from the high-temperature air inlet plate. The outer peripheral side of the support column is provided with a limit spring, and the outer surface of the support column is movably installed with an electric heating plate;

[0010] A first rotating shaft is provided on both sides of the high-temperature air inlet plate, and the first rotating shaft is movably mounted in the inner cavity of the sintering kiln body. A driving blade is fixedly mounted on the upper side of the outer surface of the first rotating shaft, and a first air guide blade is provided below the driving blade, and the first air guide blade is fixedly mounted on the outer surface of the first rotating shaft. A first pressure relief hole is provided on the side of the high-temperature air inlet plate, and the position of the first pressure relief hole corresponds to the position of the driving blade.

[0011] Through holes matching the injection holes are provided on both sides of the inner cavity wall of the sintering kiln body. A heat preservation layer is provided in the inner cavity wall of the sintering kiln body. The heat preservation layer is connected with the inner cavity of the sintering kiln body through the through holes.

[0012] Optionally, a temperature-averaging component is provided on the base, the temperature-averaging component includes a bearing groove provided on the base, the bearing groove is adapted to the magnetic core, and a slot is provided at the bottom, and a glue removal groove is provided on the upper surface of the base;

[0013] A second pressure relief hole is provided on the lower side of the surface of the high-temperature air inlet plate, a conduit is fixedly installed inside the second pressure relief hole, the bearing groove is concave in shape, and a second rotating shaft is movably installed in the concave portion, a second air guide vane is fixedly installed in the middle of the outer surface of the second rotating shaft, and the second air guide vane corresponds to the position of the conduit, and the conduit is located below the bearing groove;

[0014] Eccentric wheels are fixedly mounted on both sides of the outer surface of the second rotating shaft, and through grooves adapted to the eccentric wheels are opened on both sides of the bearing groove.

[0015] Optionally, a vibration assembly is provided on the base, the vibration assembly includes mounting grooves, the mounting grooves are provided on both sides of the base, driving members are fixedly mounted on both ends of the outer surface of the second rotating shaft, the bottom of the driving member is arc-shaped, and the driving member is located in the mounting groove;

[0016] Elastic columns are fixedly connected to both sides of the driving member, a vibrating ball is fixedly connected to the bottom of the elastic column, a driven plate is fixedly sleeved on the middle of the outer surface of the elastic column, and the width of the driven plate is adapted to the width of the mounting slot.

[0017] Optionally, the width of the base is adapted to the material withdrawal groove, and the mounting groove passes through both sides of the base.

[0018] Optionally, the air inlet pipe is connected to the high-temperature air inlet plate, and the base and the air outlet pipe are both located between two adjacent high-temperature air inlet plates.

[0019] Optionally, the electric heating plate is in contact with the high-temperature air inlet plate, a heating wire is provided inside the electric heating plate, and the injection hole is located on the inner side of the electric heating plate.

[0020] A magnetic core debinding and sintering method, using the magnetic core debinding and sintering system as described above, comprises the following steps:

[0021] S1: First, place the magnetic core into the base and send it into the inner cavity of the sintering kiln body, then close the furnace door, and then turn on the high-temperature heat circulation fan, heating box and electric heating plate to heat the air in the inner cavity of the sintering kiln body and circulate the hot air;

[0022] S2: When hot air circulates, the circulating air will enter the high-temperature air inlet plate, come out from the injection hole, and be heated by the electric heating plate, so that the heated air sintering the magnetic core;

[0023] S3: When the wind in the inner cavity of the high-temperature air intake plate is guided to the second guide vane by the duct, the second guide vane will be driven, so that the eccentric wheel will lift the magnetic core, so that the magnetic core is fully heated and the sintering operation is completed.

[0024] The present invention provides a magnetic core debinding sintering system and sintering method, which have the following beneficial effects:

[0025] 1. The core debinding and sintering system and sintering method, through the cooperation between the hot air circulation component and the pressure equalization component, can circulate the hot air at each magnetic core, making the surface temperature of the magnetic core more uniform, and fully heating and guiding the circulating gas, thereby improving the sintering effect and efficiency.

[0026] 2. The core debinding and sintering system and sintering method, through the cooperation between the temperature equalizing component and the vibration component, can make the bottom of the core be evenly heated, further improve the sintering effect, and make the vibration ball touch the withdrawal groove, so that the connection between the base and the withdrawal groove will vibrate slightly, avoiding the solid residue condensed after debinding from bonding the base and the withdrawal groove, causing the problem of difficulty in withdrawing the material. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 Schematic diagram of the structure of the present invention Figure 1 ;

[0028] Figure 2 Schematic diagram of the structure of the present invention Figure 2 ;

[0029] Figure 3 Schematic diagram of the structure of the present invention Figure 3 ;

[0030] Figure 4 Schematic diagram of the structure of the present invention Figure 4 ;

[0031] Figure 5 Schematic diagram of the pressure equalizing component structure of the present invention Figure 1 ;

[0032] Figure 6 Schematic diagram of the pressure equalizing component structure of the present invention Figure 2 ;

[0033] Figure 7 Schematic diagram of the temperature equalizing component structure of the present invention Figure 1 ;

[0034] Figure 8 Schematic diagram of the temperature equalizing component structure of the present invention Figure 2 ;

[0035] Figure 9 Schematic diagram of the temperature equalizing component structure of the present invention Figure 3 ;

[0036] Figure 10 This is a structural schematic diagram of the positional relationship between the temperature-balancing component and the vibration component of the present invention.

[0037] In the figure: 1. sintering kiln body; 11. furnace door; 12. furnace bed; 13. material return chute; 14. base; 2. circulation pipe; 21. high-temperature heat circulation fan; 22. heating box; 23. high-temperature pipeline; 24. air inlet pipe; 25. air outlet pipe; 3. high-temperature air inlet plate; 31. injection hole; 32. support column; 33. limit block; 34. limit spring; 35. electric heating plate; 36. first pressure relief hole; 37. first rotating shaft; 38. driving blade; 39. first air guide blade; 310. through hole; 311. insulation layer; 4. bearing groove; 41. glue discharge groove; 42. second pressure relief hole; 43. guide tube; 44. second rotating shaft; 45. second air guide blade; 46. eccentric wheel; 47. through groove; 5. mounting groove; 51. driving part; 52. elastic column; 53. driven plate; 54. vibrating ball DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0039] Example 1: Please refer to Figures 1 to 7 The present invention provides a technical solution: a magnetic core debinding and sintering system, comprising a sintering kiln body 1, a furnace door 11, a hearth 12, a material withdrawal chute 13 and a base 14, the furnace door 11 is installed on the front of the sintering kiln body 1, the hearth 12 is installed in the inner cavity of the sintering kiln body 1, the material withdrawal chute 13 is opened on the upper surface of the hearth 12, the base 14 is in the material withdrawal chute 13, and a hot air circulation component is provided on the sintering kiln body 1, and the hot air circulation component includes a circulation pipe 2, which is arranged on the outer peripheral side of the sintering kiln body 1 except the bottom, and high-temperature hot circulation fans 21 are installed on both sides of the circulation pipe 2, and heating boxes 22 are installed on both sides of the circulation pipe 2. The bottom of the circulation pipe 2 is connected by a high-temperature pipe 23, and the high-temperature pipe 23 is fixed in the inner cavity of the sintering kiln body 1 and is located below the hearth 12;

[0040] The upper part of the high-temperature pipe 23 is connected to an air inlet pipe 24, and the upper side of the circulation pipe 2 is connected to an air outlet pipe 25, which is located above the high-temperature pipe 23;

[0041] A pressure equalizing assembly is provided on the sintering kiln body 1, and the pressure equalizing assembly is used to improve the sintering effect.

[0042] The pressure equalizing assembly includes a high-temperature air inlet plate 3, which is fixedly installed in the inner cavity of the sintering kiln body 1 and is located above the hearth 12. There are five high-temperature air inlet plates 3, which are evenly and equidistantly distributed in the inner cavity of the sintering kiln body 1. The two high-temperature air inlet plates 3 close to the inner cavity wall of the sintering kiln body 1 are in contact with the inner cavity wall of the sintering kiln body 1.

[0043] Injection holes 31 are provided on both sides of the high-temperature air inlet plate 3. The inner cavity of the high-temperature air inlet plate 3 is connected to the inner cavity of the sintering kiln body 1 through the injection holes 31. Support columns 32 are fixedly installed at the four corners of both sides of the high-temperature air inlet plate 3. A limit block 33 is fixedly installed on the end of the support column 32 away from the high-temperature air inlet plate 3. A limit spring 34 is sleeved on the outer circumference of the support column 32. An electric heating plate 35 is movably installed on the outer surface of the support column 32.

[0044] A first rotating shaft 37 is provided on both sides of the high-temperature air inlet plate 3. The first rotating shaft 37 is movably mounted in the inner cavity of the sintering kiln body 1. A driving blade 38 is fixedly mounted on the upper side of the outer surface of the first rotating shaft 37. A first air guide blade 39 is provided below the driving blade 38. The first air guide blade 39 is fixedly mounted on the outer surface of the first rotating shaft 37. A first pressure relief hole 36 is provided on the side of the high-temperature air inlet plate 3. The position of the first pressure relief hole 36 corresponds to the position of the driving blade 38.

[0045] Through holes 310 are provided on both sides of the inner wall of the sintering kiln body 1 to match the injection holes 31. A thermal insulation layer 311 is provided in the inner wall of the sintering kiln body 1. The thermal insulation layer 311 is connected to the inner cavity of the sintering kiln body 1 through the through holes 310.

[0046] The air inlet pipe 24 is connected to the high-temperature air inlet plate 3, and the base 14 and the air outlet pipe 25 are both located between two adjacent high-temperature air inlet plates 3;

[0047] The electric heating plate 35 is in contact with the high-temperature air intake plate 3 . A heating wire is provided inside the electric heating plate 35 , and the injection hole 31 is located on the inner side of the electric heating plate 35 .

[0048] Specifically, when in use, the user first needs to place the magnetic core in the bearing slot 4, then place the base 14 into the inner cavity of the sintering kiln body 1 through the material withdrawal slot 13, then close the furnace door 11, connect an external power supply to heat the electric heating plate 35, and then start the high-temperature heat circulation fan 21 and the heating box 22 to heat the air in the inner cavity of the sintering kiln body 1 with circulating hot air, so that the hot air enters the inner cavity of the high-temperature air inlet plate 3 through the air inlet pipe 24;

[0049] When the gas enters the inner cavity of the high-temperature air inlet plate 3, it will be heated by the electric heating plate 35 and retained in the inner cavity of the high-temperature air inlet plate 3. When the air pressure in the inner cavity of the high-temperature air inlet plate 3 becomes larger and larger, the electric heating plate 35 will be pushed open, so that the injection hole 31 is exposed. At this time, the gas in the inner cavity of the high-temperature air inlet plate 3 is fully heated, and then the magnetic core is sintered through the injection hole 31. Compared with the previous method of injecting gas through the heater, the air in the present invention can be fully heated, which effectively improves the sintering effect.

[0050] Furthermore, in the previous solution, we directly sinter by injecting gas. Since the air inlet position is at the bottom of the high-temperature air inlet plate, the air output of each injection hole is different, which easily causes the problem of uneven sintering temperature of the magnetic core. However, the present invention heats and blocks the gas through the electric heating plate 35. When the gas pressure reaches a certain level, the injection hole 31 is exposed. At this time, the gas will be more evenly discharged from the injection hole 31, making the surface temperature of the magnetic core more uniform, further improving the sintering effect;

[0051] The gas released through the first pressure relief hole 36 drives the driving blade 38, thereby rotating the first rotating shaft 37, and then guides the gas discharged from the injection hole 31 toward the magnetic core, thereby increasing the gas flow speed, strengthening the hot air circulation effect, and improving the sintering efficiency;

[0052] Furthermore, in the previous invention, a circulating fan is provided on one side of the kiln body, so that the exhaust port is on one side of the kiln body, resulting in the magnetic core close to the side of the kiln body being exposed to more hot air, causing the problem of over-sintering. In the present invention, the magnetic core and the air outlet pipe 25 are both located between two adjacent high-temperature air inlet plates 3, and hot air is circulated through the air outlet pipe 25. Each magnetic core sintering location is equipped with an air outlet pipe 25, and high-temperature heat circulation fans 21 are provided on both sides of the sintering kiln body 1. In this way, the hot air at each magnetic core can be circulated. Compared with the previous invention, the present invention can make the surface temperature of the magnetic core more uniform, further improving the sintering effect.

[0053] On the other hand, part of the hot air from the high-temperature air inlet plates 3 located on both sides of the inner wall of the sintering kiln body 1 is introduced into the insulation layer 311 through the through holes 310, thereby enhancing the insulation effect of the sintering kiln body 1 and improving the sintering efficiency.

[0054] Example 2: Please refer to Figure 4 、 Figure 7 、 Figure 8 、 Figure 9 and Figure 10 A temperature-averaging component is provided on the base 14, and the temperature-averaging component includes a bearing slot 4 provided on the base 14, the bearing slot 4 is adapted to the magnetic core, and a slot is provided at the bottom, and a glue removal slot 41 is provided on the upper surface of the base 14;

[0055] A second pressure relief hole 42 is provided on the lower side of the surface of the high-temperature air inlet plate 3. A guide tube 43 is fixedly installed inside the second pressure relief hole 42. The bearing slot 4 is concave in shape, and a second rotating shaft 44 is movably installed in the concave portion. A second air guide vane 45 is fixedly installed in the middle of the outer surface of the second rotating shaft 44. The second air guide vane 45 corresponds to the position of the guide tube 43, and the guide tube 43 is located below the bearing slot 4.

[0056] Eccentric wheels 46 are fixedly mounted on both sides of the outer surface of the second rotating shaft 44 , and through slots 47 adapted to the eccentric wheels 46 are formed on both sides of the bearing slot 4 .

[0057] A vibration assembly is provided on the base 14, and the vibration assembly includes mounting grooves 5, which are provided on both sides of the base 14. A driving member 51 is fixedly mounted on both ends of the outer surface of the second rotating shaft 44. The bottom of the driving member 51 is in an arc shape, and the driving member 51 is located in the mounting groove 5.

[0058] Elastic columns 52 are fixedly connected to both sides of the driving member 51, and a vibrating ball 54 is fixedly connected to the bottom of the elastic column 52. A driven plate 53 is fixedly sleeved on the middle part of the outer surface of the elastic column 52. The width of the driven plate 53 is adapted to the width of the mounting slot 5.

[0059] The width of the base 14 is adapted to the material withdrawal groove 13 , and the mounting groove 5 passes through both sides of the base 14 .

[0060] On the basis of Example 1, part of the gas in the high-temperature air inlet plate 3 can be guided to the second guide vane 45 through the second pressure relief hole 42 and the conduit 43, and the second guide vane 45 is driven to rotate, so that the second guide vane 45 guides the gas to the bearing groove 4. At the same time, the rotation of the second guide vane 45 drives the eccentric wheel 46 to rotate, so that the eccentric wheel 46 lifts the magnetic core through the through groove 47. Compared with the previous invention, the present invention can evenly heat the bottom of the magnetic core, achieve more complete sintering, and further improve the sintering effect.

[0061] Furthermore, when the second guide blade 45 rotates, it can drive the driving member 51 to rotate, so that the driving member 51 drives the driven plate 53, thereby causing the vibrating ball 54 to swing, and touch the material return groove 13 through the mounting groove 5, so that the connection between the base 14 and the material return groove 13 vibrates slightly. Compared with previous inventions, the present invention utilizes the vibration effect to avoid the solid residue condensed after debonding from bonding the base 14 and the material return groove 13, causing the problem of difficulty in material return.

[0062] A magnetic core debinding and sintering method, using the magnetic core debinding and sintering system as described above, comprises the following steps:

[0063] S1: First, place the magnetic core into the base 14 and send it into the inner cavity of the sintering kiln body 1, then close the furnace door 11, and then turn on the high-temperature heat circulation fan 21, the heating box 22 and the electric heating plate 35 to heat the air in the inner cavity of the sintering kiln body 1 and circulate the hot air;

[0064] S2: When the hot air circulates, the circulating air enters the high-temperature air inlet plate 3, comes out from the injection hole 31, and is heated by the electric heating plate 35, so that the heated air sintering the magnetic core;

[0065] S3: When the wind in the inner cavity of the high-temperature air inlet plate 3 is guided to the second guide vane 45 by the duct 43, the second guide vane 45 will be driven, so that the eccentric wheel 46 will lift the magnetic core, so that the magnetic core is fully heated and the sintering operation is completed.

[0066] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A magnetic core debinding sintering system, comprising a sintering kiln body (1), a furnace door (11), a hearth (12), a material return chute (13) and a base (14), wherein the furnace door (11) is installed on the front of the sintering kiln body (1), the hearth (12) is installed in the inner cavity of the sintering kiln body (1), the material return chute (13) is opened on the upper surface of the hearth (12), and the base (14) is located in the material return chute (13), characterized in that: The sintering kiln body (1) is provided with a hot air circulation assembly, the hot air circulation assembly comprising a circulation pipe (2), the circulation pipe (2) being provided on the outer peripheral side of the sintering kiln body (1) except the bottom, high-temperature heat circulation fans (21) being installed on both sides of the circulation pipe (2), heating boxes (22) being installed on both sides of the circulation pipe (2), the bottom of the circulation pipe (2) being connected to a high-temperature pipe (23), the high-temperature pipe (23) being fixed in the inner cavity of the sintering kiln body (1) and being located below the hearth (12); The upper side of the high-temperature pipe (23) is connected to an air inlet pipe (24), and the upper side of the circulation pipe (2) is connected to an air outlet pipe (25), and the air outlet pipe (25) is located above the high-temperature pipe (23); The sintering kiln body (1) is provided with a pressure equalizing assembly, and the pressure equalizing assembly is used to improve the sintering effect, and the pressure equalizing assembly includes a high-temperature air inlet plate (3); the base (14) is provided with a temperature equalizing assembly, and the temperature equalizing assembly includes a bearing groove (4) provided on the base (14), the bearing groove (4) is adapted to the magnetic core, and a slot is provided at the bottom, and a glue discharge groove (41) is provided on the upper surface of the base (14); A second pressure relief hole (42) is provided on the lower side of the surface of the high-temperature air inlet plate (3), a guide tube (43) is fixedly installed inside the second pressure relief hole (42), the bearing groove (4) is concave in shape, and a second rotating shaft (44) is movably installed in the concave portion. A second air guide vane (45) is fixedly mounted on the middle portion of the outer surface of the second rotating shaft (44), and the second air guide vane (45) corresponds to the position of the duct (43), and the duct (43) is located below the bearing groove (4); eccentric wheels (46) are fixedly mounted on both sides of the outer surface of the second rotating shaft (44), and through grooves (47) adapted to the eccentric wheels (46) are provided on both sides of the bearing groove (4); A vibration assembly is provided on the base (14), the vibration assembly includes a mounting groove (5), the mounting groove (5) is opened on both sides of the base (14), and driving members (51) are fixedly installed on both ends of the outer surface of the second rotating shaft (44), the bottom of the driving member (51) is in an arc shape, and the driving member (51) is located in the mounting groove (5); Both sides of the driving member (51) are fixedly connected with elastic columns (52), the bottom of the elastic column (52) is fixedly connected with a vibration ball (54), and the middle part of the outer surface of the elastic column (52) is fixedly sleeved with a driven plate (53), and the width of the driven plate (53) is adapted to the width of the mounting slot (5).

2. The magnetic core debinding and sintering system according to claim 1, characterized in that: The high-temperature air inlet plates (3) are fixedly installed in the inner cavity of the sintering kiln body (1) and are located above the hearth (12). The number of the high-temperature air inlet plates (3) is five and they are evenly and equidistantly distributed in the inner cavity of the sintering kiln body (1). Two high-temperature air inlet plates (3) close to the inner cavity wall of the sintering kiln body (1) are in contact with the inner cavity wall of the sintering kiln body (1); Both sides of the high-temperature air inlet plate (3) are provided with injection holes (31), the inner cavity of the high-temperature air inlet plate (3) is communicated with the inner cavity of the sintering kiln body (1) through the injection holes (31), support columns (32) are fixedly installed at the four corners of both sides of the high-temperature air inlet plate (3), a limit block (33) is fixedly installed at one end of the support column (32) away from the high-temperature air inlet plate (3), a limit spring (34) is sleeved on the outer circumference of the support column (32), and an electric heating plate (35) is movably installed on the outer surface of the support column (32); A first rotating shaft (37) is provided on both sides of the high-temperature air inlet plate (3), and the first rotating shaft (37) is movably installed in the inner cavity of the sintering kiln body (1). A driving blade (38) is fixedly installed on the upper side of the outer surface of the first rotating shaft (37), and a first air guide blade (39) is provided below the driving blade (38). The first air guide blade (39) is fixedly installed on the outer surface of the first rotating shaft (37). A first pressure relief hole (36) is provided on the side of the high-temperature air inlet plate (3), and the position of the first pressure relief hole (36) corresponds to the position of the driving blade (38); Through holes (310) adapted to the injection holes (31) are provided on both sides of the inner cavity wall of the sintering kiln body (1), and a heat-insulating layer (311) is provided in the inner cavity wall of the sintering kiln body (1), and the heat-insulating layer (311) is communicated with the inner cavity of the sintering kiln body (1) through the through holes (310).

3. The magnetic core debinding and sintering system according to claim 1, characterized in that: The width of the base (14) is adapted to the material withdrawal groove (13), and the mounting groove (5) passes through both sides of the base (14).

4. The magnetic core debinding and sintering system according to claim 1, characterized in that: The air inlet pipe (24) is connected to the high-temperature air inlet plate (3), and the base (14) and the air outlet pipe (25) are both located between two adjacent high-temperature air inlet plates (3).

5. The magnetic core debinding and sintering system according to claim 2, characterized in that: The electric heating plate (35) is in contact with the high-temperature air inlet plate (3), a heating wire is provided inside the electric heating plate (35), and the injection hole (31) is located inside the electric heating plate (35).

6. A method for debinding and sintering a magnetic core, using the magnetic core debinding and sintering system according to any one of claims 1 to 5, characterized in that: The following steps are involved: S1: First, place the magnetic core into the base (14) and send it into the inner cavity of the sintering kiln body (1), then close the furnace door (11), and then turn on the high-temperature heat circulation fan (21), the heating box (22) and the electric heating plate (35) to heat the air in the inner cavity of the sintering kiln body (1) and circulate the hot air; S2: When the hot air circulates, the circulating air enters the high-temperature air inlet plate (3), exits from the injection hole (31), and is heated by the electric heating plate (35), so that the heated air sintering the magnetic core; S3: When the wind in the inner cavity of the high-temperature air inlet plate (3) is guided to the second air guide blade (45) by the duct (43), the second air guide blade (45) is driven, so that the eccentric wheel (46) lifts the magnetic core, so that the magnetic core is fully heated and the sintering operation is completed.

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