A rapid heat treatment device for amorphous nanocrystalline magnetic cores

Abstract

The application provides a rapid heat treatment device for amorphous nanocrystalline magnetic cores, and relates to the technical field of heat treatment devices.The device comprises a heat treatment furnace, a fixed shell is fixedly installed at the lower end of the heat treatment furnace, a movable atmosphere structure is arranged on the inner side of the fixed shell, a rotating and oscillating integrated bearing structure is arranged on the movable atmosphere structure, and a self-adaptive adjustment structure is arranged on the rotating and oscillating integrated bearing structure.When the pressure in the heating cavity increases, one-way driving of the second single-acting cylinder drives the gate valve gate to descend and reduce the atmosphere delivery amount, and one-way driving of the first single-acting cylinder drives the sliding block to slide, thereby reducing the eccentric distance between the first ball head hinge and the second ball head hinge and reducing the oscillation amplitude, so that the atmosphere spraying amount and the oscillation amplitude can be automatically adjusted according to the internal pressure of the heating cavity, the problems of poor atmosphere flow and excessive oscillation damage to the surface gas film of the magnetic core under high pressure are avoided, and the stability of the amorphous nanocrystalline magnetic core heat treatment quality under different pressure working conditions is ensured.

Description

Technical Field

[0001] This invention belongs to the technical field of heat treatment equipment, and more specifically, relates to a rapid heat treatment device for amorphous nanocrystalline magnetic cores. Background Technology

[0002] The rapid heat treatment device for amorphous and nanocrystalline magnetic cores is a device that improves the key properties of the magnetic core, such as magnetic permeability and saturation magnetic induction intensity, by controlling the heating temperature, holding time and protective atmosphere to eliminate internal stress and optimize the grain structure.

[0003] A search of Chinese patent publication number "CN120249629A" reveals "a heat treatment forming device for amorphous nanocrystalline magnetic cores". The device uses a pulley frame to move up and down, which in turn drives the hollow tube and the placement frame to move up and down. The up and down movement of the placement frame heats the magnetic core, ensuring that it receives a suitable heat treatment process, thereby achieving better magnetic properties and a longer service life.

[0004] Based on the above search and existing technology findings, the aforementioned patent has certain defects: During the rapid heat treatment of amorphous and nanocrystalline magnetic cores, the internal pressure of the heating chamber will dynamically fluctuate with the increase of temperature and the injection of atmosphere. If a fixed atmosphere delivery volume and auxiliary oscillation parameters are maintained under high pressure, the problem of poor atmosphere flow is likely to occur, resulting in uneven distribution of the gas film on the surface of the magnetic core and causing local oxidation. At the same time, excessive oscillation will directly damage the protective gas film on the surface of the magnetic core, further affecting the heat treatment quality. The device lacks a pressure-matching parameter adjustment structure, making it difficult to adapt to the heat treatment requirements under different pressure conditions and making it difficult to ensure the stability and consistency of the magnetic core performance. Summary of the Invention

[0005] To address the aforementioned technical problems, this invention provides a rapid thermal processing device for amorphous and nanocrystalline magnetic cores.

[0006] A rapid heat treatment device for amorphous and nanocrystalline magnetic cores includes a heat treatment furnace with a furnace door hinged to its surface, four corner columns fixedly installed at the lower end of the heat treatment furnace, a heating chamber provided inside the heat treatment furnace, a through groove opened through the bottom of the heating chamber, and a fixed shell fixedly installed at the lower end of the heat treatment furnace.

[0007] Preferably, a driven pressure structure is fixedly installed at the lower end of the heat treatment furnace;

[0008] The driven pressure structure includes a sealing cylinder, which is fixedly installed at the lower end of the heat treatment furnace and communicates with the heating chamber. A return spring is fixedly installed inside the sealing cylinder, and a high-temperature resistant pressure diaphragm is fixedly installed at the end of the return spring. A sliding rod is fixedly installed inside the high-temperature resistant pressure diaphragm, with its end extending to the outside of the heat treatment furnace. The sliding rod is slidably and sealingly installed with the sealing cylinder. A ring frame is fixedly installed on the circumferential surface of the sealing cylinder, and a piston cylinder is fixedly installed inside the ring frame. A piston head is fixedly installed at the lower end of the sliding rod. The piston head is sealed and slidably mounted inside the piston cylinder. When the pressure inside the heating chamber increases, the pressure acts on the high-temperature resistant pressure diaphragm, pushing the diaphragm downward within the sealed cylinder. This compresses the return spring and causes the sliding rod and piston head to move downward synchronously. The piston head slides downward within the piston cylinder, compressing the internal gas and providing power for the adaptive adjustment structure. When the pressure inside the heating chamber decreases, the return spring releases its elastic potential energy, pushing the high-temperature resistant pressure diaphragm upward to reset, thereby causing the sliding rod and piston head to move upward synchronously, relieving the pressure inside the piston cylinder, allowing the adaptive adjustment structure to reset accordingly.

[0009] Preferably, the inner side of the fixed shell is provided with a moving atmosphere structure, which can spray atmosphere onto the amorphous nanocrystalline magnetic core in a moving manner, reducing the atmosphere dead zones on the amorphous nanocrystalline magnetic core;

[0010] The motion-type atmosphere structure includes a first fixed frame, which is fixedly installed inside a fixed housing. A first air slip ring is provided inside the first fixed frame. The fixed ring of the first air slip ring is fixedly installed to the first fixed frame. A ring gear is fixedly installed inside the moving ring of the first air slip ring. A motor is fixedly installed at the bottom of the fixed housing. A coupling is provided on the output shaft of the motor. A first rotating rod is fixedly installed at the other end of the coupling. A first gear is fixedly installed on the circumferential surface of the first rotating rod, and the first gear meshes with the ring gear. A rotating ring is rotatably installed on the inner wall of the through groove. A sealing disc is fixedly installed inside the rotating ring. A rotating cylinder is rotatably installed at the center of the sealing disc. A second gear is fixedly installed on the circumferential surface of the rotating cylinder, and the second gear meshes with the first gear. Multiple three-pronged air outlets are fixedly installed on the rotating ring. One bottom end of each three-pronged air outlet is fixedly connected to the air outlet of the moving ring of the first air slip ring. When the motor and the external atmosphere conveyor connected to the second air pipe are turned on, the motor output power is transmitted to the first gear through the coupling and the first rotating rod, driving the first gear to rotate. The first gear meshes with the ring gear and the second gear, driving the ring gear to drive its moving ring to rotate inside the first air slip ring, thereby driving the rotating ring and the three-head air outlet pipe to rotate synchronously. At the same time, the rotation of the second gear drives the rotating drum and its auxiliary structure to rotate at the center of the sealing plate, thereby driving the bearing seat, the fixed block and the bearing tray assembly to rotate synchronously, realizing the reverse rotation of the bearing tray assembly and the three-head air outlet pipe. The external atmosphere conveyor delivers the protective atmosphere to the first air slip ring through the second air pipe, and then the first air slip ring distributes it to each of the three-head air outlet pipes, spraying the amorphous nanocrystalline magnetic core on the bearing tray assembly in all directions. Through the relative movement of the atmosphere and the magnetic core, the atmosphere is wrapped without dead angles, avoiding the formation of atmosphere dead angles on the surface of the magnetic core and the stacking gaps, ensuring uniform anti-oxidation of the magnetic core during the heat treatment process.

[0011] Preferably, the motion atmosphere structure is provided with an integrated rotating and oscillating bearing structure, which can drive the amorphous nanocrystalline magnetic core to oscillate up and down and rotate synchronously.

[0012] The integrated rotating and oscillating bearing structure includes a keyway, which is located inside the rotating cylinder. A key post is slidably mounted inside the keyway, and a connecting ring is rotatably mounted at the lower end of the key post. The key post is located inside the heating chamber. A bearing seat is fixedly mounted at the upper end of the key post, and a fixing block is threaded onto the inner side of the bearing seat. A bearing tray assembly is located at the upper end of the fixing block, inside the moving atmosphere structure and the heating chamber. A second rotating rod is rotatably mounted at the bottom of the fixed shell. A transmission belt is wound around the second rotating rod and the output shaft of the motor via a pulley. A fixed plate is fixedly mounted at the upper end of the second rotating rod. A sliding groove is opened inside the fixed plate, and a slider is slidably mounted inside the groove. A first ball joint hinge is fixedly mounted at the upper end of the slider, and a second ball joint hinge is fixedly mounted at the lower end of the connecting ring. A connecting rod is fixedly mounted between the ball joints of the first and second ball joints. In use, the operator first removes the bearing tray assembly and places the amorphous nanoparticles to be heat-treated on the bearing tray assembly. The amorphous and nanocrystalline magnetic cores are then processed by screwing the fixing blocks on the support tray assembly onto the support base. The furnace door is then closed, and the heat treatment parameters are adjusted to initiate the heat treatment process for the amorphous and nanocrystalline magnetic cores. When the motor is running, its output shaft drives the second rotating rod to rotate synchronously via a pulley and transmission belt. The second rotating rod drives the fixed disk to rotate, which in turn drives the rotating ring of the second air slip ring to rotate, thereby driving the slider and the first ball joint hinge in the slide groove to rotate synchronously. Because there is an eccentricity between the rotation centers of the first and second ball joint hinges, and the first ball joint hinge... Rigidly connected to the slider, the first ball joint rotates and transmits radial force to the second ball joint via a connecting rod, and then to the key post via a connecting ring. The key post is constrained by the axial limit of the keyway, converting the radial force into axial driving force, causing the key post to slide back and forth along the keyway. This, in turn, drives the bearing seat, fixing block and bearing tray assembly to slide back and forth synchronously, achieving high-amplitude oscillation of the magnetic core during rotation, accelerating the diffusion of internal materials and relaxation of internal stress, and at the same time breaking the static gas film on the surface of the magnetic core, improving the contact efficiency between the protective atmosphere and the surface of the magnetic core.

[0013] Preferably, the integrated rotating and oscillating bearing structure is provided with an adaptive adjustment structure. The adaptive adjustment structure can control the amount of air sprayed and the oscillation amplitude of the moving atmosphere structure and the integrated rotating and oscillating bearing structure according to the pressure inside the heating chamber through the driven pressure structure.

[0014] The adaptive adjustment structure includes a first single-acting cylinder, which is embedded in the side wall of a slide groove. The output shaft of the first single-acting cylinder is located inside the slide groove and is fixedly installed with the slider. A second air slip ring is provided on the circumferential surface of the fixed plate. The moving ring of the second air slip ring is fixedly installed with the fixed plate. A second fixing frame is fixedly installed inside the fixed shell. The second fixing frame is fixedly installed with the fixed ring of the second air slip ring. A first air pipe is fixedly connected between the reset air port of the first single-acting cylinder and the air outlet of the moving ring of the second air slip ring. A second air pipe is fixedly connected between the air inlet of the first air slip ring and the air outlet of the moving ring of the second air slip ring. The second air pipe is located on the outside of the fixed shell. A gate valve is provided on the circumferential surface of the second air pipe. A second single-acting cylinder is located inside the gate valve. A third air pipe is fixedly connected between the air inlet of the second single-acting cylinder and the air outlet of the piston cylinder. A fourth air pipe is fixedly connected around the third air pipe and is fixedly connected to the fixed ring of the second air slip ring. When the gas inside the piston cylinder of the driven pressure structure is compressed, this gas is output in two paths. One path is delivered to the second single-acting cylinder via the third air pipe, driving the piston rod of the second single-acting cylinder to extend and lower the gate valve. The first gas pipe reduces the amount of atmosphere supplied to the first gas slip ring, preventing poor atmosphere flow within the furnace under high pressure. The second gas pipe supplies atmosphere to the fixed ring of the second gas slip ring, and then the moving ring of the second gas slip ring supplies atmosphere to the reset port of the first single-acting cylinder via the first gas pipe. This drives the piston rod of the first single-acting cylinder to move the slider along the slide groove in a reset motion, thereby pushing the first ball joint hinge towards the center of the fixed plate. This reduces the eccentricity between the first and second ball joint hinges, achieving an adaptive reduction in the oscillation amplitude of the bearing tray assembly and preventing excessive oscillation under high pressure from damaging the protective gas film on the magnetic core surface. To reduce the risk of localized oxidation of the magnetic core, when the internal pressure of the heating chamber decreases and the driven pressure structure resets, the self-springs inside the first and second single-acting cylinders respectively initiate reset actions. The piston rod of the second single-acting cylinder retracts, causing the gate valve to rise and restoring the normal atmosphere delivery from the second air pipe to the first air slip ring. The piston rod of the first single-acting cylinder retracts, causing the slider and the first ball joint hinge to reset to a certain extent, restoring the initial eccentricity between the first and second ball joint hinges, so that the bearing tray assembly returns to its initial oscillation amplitude, ensuring the atmosphere spraying efficiency and oscillation relaxation effect under low pressure.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] In this invention, by setting a driven pressure structure, when the pressure inside the heating chamber increases, the pressure acts on the high-temperature resistant pressure diaphragm, pushing it to move downward, compressing the return spring and causing the sliding rod and piston head to move downward synchronously, squeezing the gas inside the piston cylinder to provide power for the adaptive adjustment structure. When the pressure inside the heating chamber decreases, the return spring releases elastic potential energy to push the high-temperature resistant pressure diaphragm, sliding rod and piston head to reset, relieving the pressure inside the piston cylinder. This enables the sensing and transmission of pressure changes inside the heating chamber, which is beneficial for triggering other structures to complete corresponding operations.

[0017] In this invention, through a motion-type atmosphere structure, the motor outputs power to drive the first gear to rotate via a transmission component, which in turn drives the ring gear and the second gear to rotate synchronously, achieving the reverse rotation of the three-head air outlet pipe and the supporting tray assembly. At the same time, the external atmosphere conveyor delivers protective atmosphere to the three-head air outlet pipe via the second air pipe and the first air slip ring to spray the magnetic core in all directions. Thus, the relative motion between the atmosphere and the magnetic core eliminates the atmosphere dead zones on the surface of the magnetic core and the stacking gaps, avoiding the problem of local oxidation of the magnetic core caused by poor local atmosphere flow and residual air, and ensuring the uniformity and reliability of anti-oxidation protection during the heat treatment of amorphous and nanocrystalline magnetic cores.

[0018] In this invention, by setting up an integrated rotating and oscillating bearing structure, after the operator places and fixes the magnetic core on the bearing tray assembly, the motor drives the second rotating rod and the fixed plate to rotate through the transmission belt, which in turn drives the first ball joint to rotate synchronously. Utilizing the eccentricity between the first and second ball joints, the radial force is transmitted to the key post through the connecting rod. After being limited by the keyway, it is converted into axial driving force, which drives the bearing tray assembly to rotate and reciprocate up and down oscillate synchronously. This can accelerate the diffusion of materials inside the magnetic core, increase the speed of internal stress relaxation, and at the same time break the static gas film on the surface of the magnetic core, thereby improving the contact efficiency between the protective atmosphere and the surface of the magnetic core. This solves the problems of traditional bearing structures that can only rotate or oscillate, have low processing efficiency, and have gas films that hinder atmosphere contact.

[0019] In this invention, by setting an adaptive adjustment structure, when the internal pressure of the heating chamber increases, the gas squeezed in the piston cylinder is transported to the second single-acting cylinder through the third gas pipe, driving its piston rod to extend and causing the gate valve to descend, reducing the amount of atmosphere delivered from the second gas pipe to the first gas slip ring. When the internal pressure of the heating chamber decreases, the second single-acting cylinder is reset by its own spring, driving the gate valve to rise and restore the normal amount of atmosphere delivered. This allows for automatic adjustment of the atmosphere spraying amount according to the heating chamber pressure, avoiding the problem of poor airflow in the furnace caused by excessive atmosphere injection under high pressure, while ensuring the atmosphere spraying efficiency under low pressure, ensuring the effectiveness of the atmosphere in protecting the magnetic core under different pressure conditions, and further avoiding the risk of local oxidation of the magnetic core.

[0020] In this invention, by setting an adaptive adjustment structure, when the internal pressure of the heating chamber increases, the gas squeezed in the piston cylinder is transported to the reset port of the first single-acting cylinder through the fourth gas pipe, the second gas slip ring, and the first gas pipe. This drives the piston rod to move the slider along the slide groove, pushing the first ball joint hinge towards the center of the fixed disk, reducing the eccentricity with the second ball joint hinge to decrease the oscillation amplitude of the bearing tray assembly. When the internal pressure of the heating chamber decreases, the first single-acting cylinder resets through its own spring, driving the slider and the first ball joint hinge to reset, restoring the initial eccentricity and oscillation amplitude. This allows for automatic adjustment of the oscillation amplitude according to the heating chamber pressure, avoiding excessive oscillation under high pressure that could damage the protective gas film on the surface of the magnetic core. At the same time, it ensures the oscillation relaxation effect under low pressure, accelerates the diffusion of materials inside the magnetic core and the release of internal stress, and ensures the heat treatment quality stability of the amorphous and nanocrystalline magnetic core under different pressure conditions. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0022] Figure 2 This is a schematic diagram of a partial assembly structure of the present invention;

[0023] Figure 3 This is a schematic diagram of the combined structure of the heat treatment furnace of the present invention;

[0024] Figure 4 This is a cross-sectional view of the fixed shell of the present invention;

[0025] Figure 5 This is a schematic diagram of the bearing seat assembly structure of the present invention;

[0026] Figure 6 This is a schematic diagram of the sealing disc assembly structure of the present invention;

[0027] Figure 7 This is a schematic diagram of the first air slip ring assembly structure of the present invention;

[0028] Figure 8 This is a schematic diagram of the piston cylinder assembly structure of the present invention;

[0029] Figure 9 This is a schematic diagram of the fixed disk assembly structure of the present invention;

[0030] Figure 10 This is a schematic diagram of the linkage assembly structure of the present invention;

[0031] Figure 11 This is a cross-sectional view of the fixed disk of the present invention;

[0032] Figure 12 This is a cross-sectional view of the rotating cylinder of the present invention.

[0033] In the diagram, the correspondence between component names and attached drawing numbers is as follows: 11. Heat treatment furnace; 12. Furnace door; 13. Four corner base columns; 14. Heating chamber; 15. Through groove; 16. Fixed shell; 17. Sealing cylinder; 18. Return spring; 19. High-temperature pressure diaphragm; 21. Ring frame; 22. Piston cylinder; 23. Sliding rod; 24. First fixed frame; 25. First air slip ring; 26. Ring gear; 27. Motor; 28. Coupling; 29. ​​First rotating rod; 31. First gear; 32. Rotating ring; 33. Rotating cylinder; 34. Second gear; 35. Three-headed exhaust pipe; 3 6. Keyway; 37. Key post; 38. Connecting ring; 39. Bearing seat; 41. Fixing block; 42. Bearing tray assembly; 43. Second rotating rod; 44. Transmission belt; 45. Fixing plate; 46. Slide groove; 47. Slider; 48. First ball joint hinge; 49. Second ball joint hinge; 51. Connecting rod; 52. First single-acting cylinder; 53. Second air slip ring; 54. Second fixing frame; 55. First air pipe; 56. Second air pipe; 57. Gate valve; 58. Second single-acting cylinder; 59. Third air pipe; 61. Fourth air pipe; 62. Piston head; 63. Sealing plate. Detailed Implementation

[0034] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0035] Please see Figure 1 - Figure 12 The present invention provides a rapid heat treatment device for amorphous nanocrystalline magnetic cores, including a heat treatment furnace 11, a furnace door 12 hinged to the surface of the heat treatment furnace 11, four corner base columns 13 fixedly installed at the lower end of the heat treatment furnace 11, a heating chamber 14 provided inside the heat treatment furnace 11, a through groove 15 through the bottom of the heating chamber 14, and a fixed shell 16 fixedly installed at the lower end of the heat treatment furnace 11.

[0036] A driven pressure structure is fixedly installed at the lower end of the heat treatment furnace 11. The driven pressure structure includes a sealing cylinder 17, which is fixedly installed at the lower end of the heat treatment furnace 11 and communicates with the heating chamber 14. A return spring 18 is fixedly installed inside the sealing cylinder 17. A high-temperature resistant pressure diaphragm 19 is fixedly installed at the end of the return spring 18. A sliding rod 23 is fixedly installed inside the high-temperature resistant pressure diaphragm 19. The end of the sliding rod 23 extends to the outside of the heat treatment furnace 11. The sliding rod 23 is slidably installed in a sealed manner with the sealing cylinder 17. A ring frame 21 is fixedly installed on the circumferential surface of the sealing cylinder 17. A piston cylinder 22 is fixedly installed inside the ring frame 21. A piston head 62 is fixedly installed at the lower end of the sliding rod 23. The piston head 62 is slidably installed inside the piston cylinder 22.

[0037] By setting a driven pressure structure, when the internal pressure of the heating chamber 14 increases, the pressure acts on the high-temperature pressure diaphragm 19, pushing it to move downward, compressing the return spring 18 and causing the sliding rod 23 and piston head 62 to move downward synchronously, squeezing the gas inside the piston cylinder 22 to provide power for the adaptive adjustment structure. When the internal pressure of the heating chamber 14 decreases, the return spring 18 releases elastic potential energy to push the high-temperature pressure diaphragm 19, sliding rod 23 and piston head 62 to reset, relieving the internal pressure of the piston cylinder 22. This enables the sensing and transmission of changes in the internal pressure of the heating chamber 14, which is beneficial for triggering other structures to complete corresponding operations.

[0038] The inner side of the fixed housing 16 is provided with a moving atmosphere structure, which can spray atmosphere onto the amorphous nanocrystalline magnetic core in a moving manner, reducing the atmosphere dead zones on the amorphous nanocrystalline magnetic core. The moving atmosphere structure includes a first fixed frame 24, which is fixedly installed inside the fixed housing 16. A first air slip ring 25 is provided inside the first fixed frame 24. The fixed ring of the first air slip ring 25 is fixedly installed to the first fixed frame 24. A ring gear 26 is fixedly installed inside the moving ring of the first air slip ring 25. A motor 27 is fixedly installed at the bottom of the fixed housing 16. A coupling 28 is provided on the output shaft of the motor 27. 28. A first rotating rod 29 is fixedly installed at the other end. A first gear 31 is fixedly installed on the circumferential surface of the first rotating rod 29. The first gear 31 meshes with the ring gear 26. A rotating ring 32 is rotatably installed on the inner wall of the through groove 15. A sealing disc 63 is fixedly installed on the inner side of the rotating ring 32. A rotating cylinder 33 is rotatably installed at the center of the sealing disc 63. A second gear 34 is fixedly installed on the circumferential surface of the rotating cylinder 33. The second gear 34 meshes with the first gear 31. Multiple three-headed air outlet pipes 35 are fixedly installed on the rotating ring 32. One end of the bottom of the three-headed air outlet pipe 35 is fixedly connected to the air outlet of the moving ring of the first air slip ring 25.

[0039] Through the motion atmosphere structure, the motor 27 outputs power to drive the first gear 31 to rotate via the transmission component, which in turn drives the ring gear 26 and the second gear 34 to drive synchronously, realizing the reverse rotation of the three-head air outlet pipe 35 and the supporting tray group 42. At the same time, the external atmosphere conveyor delivers the protective atmosphere to the three-head air outlet pipe 35 through the second air pipe 56 and the first air slip ring 25 to spray the magnetic core in all directions. Thus, the relative movement between the atmosphere and the magnetic core can eliminate the atmosphere dead corners on the surface of the magnetic core and the stacking gaps, avoid the problem of local oxidation of the magnetic core caused by poor local atmosphere flow and air residue, and ensure the uniformity and reliability of anti-oxidation protection during the heat treatment of amorphous and nanocrystalline magnetic cores.

[0040] The motion-type atmosphere structure is equipped with an integrated rotating and oscillating bearing structure. This integrated structure can drive the amorphous and nanocrystalline magnetic core to oscillate up and down and rotate synchronously. The integrated rotating and oscillating bearing structure includes a keyway 36, which is located inside the rotating cylinder 33. A key post 37 is slidably mounted inside the keyway 36. A connecting ring 38 is rotatably mounted at the lower end of the key post 37. A portion of the key post 37 is located inside the heating chamber 14. A bearing seat 39 is fixedly mounted at the upper end of the key post 37. A fixing block 41 is threaded onto the inner side of the bearing seat 39. A bearing tray assembly 42 is located at the upper end of the fixing block 41. 2 is located inside the motion atmosphere structure. The bearing tray assembly 42 is located inside the heating chamber 14. The bottom of the fixed shell 16 is rotatably mounted with a second rotating rod 43. The second rotating rod 43 and the output shaft of the motor 27 are connected by a pulley and a transmission belt 44 is wound around it. The upper end of the second rotating rod 43 is fixedly mounted with a fixed plate 45. The fixed plate 45 has a sliding groove 46 inside. The sliding slider 47 is slidably mounted inside the sliding groove 46. The upper end of the slider 47 is fixedly mounted with a first ball joint hinge 48. The lower end of the connecting ring 38 is fixedly mounted with a second ball joint hinge 49. A connecting rod 51 is fixedly mounted between the ball joints of the first ball joint hinge 48 and the second ball joint hinge 49.

[0041] By setting up an integrated rotating and oscillating load-bearing structure, after the operator places and fixes the magnetic core on the load-bearing tray assembly 42, the motor 27 drives the second rotating rod 43 and the fixed plate 45 to rotate through the transmission belt 44, which drives the first ball joint hinge 48 to rotate synchronously. Utilizing the eccentricity between the first ball joint hinge 48 and the second ball joint hinge 49, the radial force is transmitted to the key post 37 through the connecting rod 51. After being limited by the keyway 36, it is converted into axial driving force, which drives the load-bearing tray assembly 42 to rotate and reciprocate up and down oscillate synchronously. This can accelerate the diffusion of materials inside the magnetic core, increase the speed of internal stress relaxation, and at the same time break the static gas film on the surface of the magnetic core, improve the contact efficiency between the protective atmosphere and the surface of the magnetic core, and solve the problems of traditional load-bearing structures that can only rotate or oscillate, have low processing efficiency, and have gas films that hinder atmosphere contact.

[0042] The integrated rotating and oscillating bearing structure is equipped with an adaptive adjustment structure. This adaptive adjustment structure, through a driven pressure structure, controls the spray volume and oscillation amplitude of the atmosphere by the moving atmosphere structure and the integrated rotating and oscillating bearing structure based on the internal pressure of the heating chamber 14. The adaptive adjustment structure includes a first single-acting cylinder 52, which is embedded in the side wall of the slide groove 46. The output shaft of the first single-acting cylinder 52 is located inside the slide groove 46 and is fixedly installed with the slider 47. A second air slip ring 53 is provided on the circumferential surface of the fixed disk 45. The moving ring of the second air slip ring 53 is fixedly installed with the fixed disk 45. A second fixing frame 54 is fixedly installed inside the fixed shell 16. The second fixed bracket 54 is fixedly installed on the fixed ring of the second air slip ring 53. The reset air port of the first single-acting cylinder 52 is fixedly connected to the air outlet of the moving ring of the second air slip ring 53. The air inlet of the first air slip ring 25 is fixedly connected to the second air pipe 56. Part of the second air pipe 56 is located on the outside of the fixed shell 16. A gate valve 57 is provided on the circumferential surface of the second air pipe 56. A second single-acting cylinder 58 is provided inside the gate valve 57. A third air pipe 59 is fixedly connected to the air inlet of the second single-acting cylinder 58 and the air outlet of the piston cylinder 22. A fourth air pipe 61 is fixedly connected to the third air pipe 59. The fourth air pipe 61 is fixedly connected to the fixed ring of the second air slip ring 53.

[0043] By setting an adaptive adjustment structure, when the internal pressure of the heating chamber 14 increases, the gas squeezed in the piston cylinder 22 is transported to the second single-acting cylinder 58 through the third gas pipe 59, driving its piston rod to extend and causing the gate valve 57 to descend, reducing the amount of atmosphere delivered from the second gas pipe 56 to the first gas slip ring 25. When the internal pressure of the heating chamber 14 decreases, the second single-acting cylinder 58 is reset by its own spring, driving the gate valve 57 to rise and restore the normal amount of atmosphere delivery. This allows for automatic adjustment of the atmosphere spraying amount according to the pressure of the heating chamber 14, avoiding the problem of poor airflow in the furnace caused by excessive atmosphere injection under high pressure, while ensuring the atmosphere spraying efficiency under low pressure, ensuring the effectiveness of the atmosphere in protecting the magnetic core under different pressure conditions, and further avoiding the risk of local oxidation of the magnetic core.

[0044] By setting an adaptive adjustment structure, when the internal pressure of the heating chamber 14 increases, the gas squeezed in the piston cylinder 22 is transported to the reset port of the first single-acting cylinder 52 through the fourth air pipe 61, the second air slip ring 53, and the first air pipe 55. This drives the piston rod to move the slider 47 along the slide groove 46, pushing the first ball joint hinge 48 towards the center of the fixed disk 45, reducing the eccentricity with the second ball joint hinge 49 to reduce the oscillation amplitude of the bearing tray assembly 42. When the internal pressure of the heating chamber 14 decreases, the first single-acting cylinder 52 resets through its own spring, driving the slider 47 and the first ball joint hinge 48 to reset, restoring the initial eccentricity and oscillation amplitude. This allows for automatic adjustment of the oscillation amplitude according to the pressure of the heating chamber 14, avoiding excessive oscillation under high pressure that could damage the protective gas film on the surface of the magnetic core. At the same time, it ensures the oscillation relaxation effect under low pressure, accelerates the diffusion of materials inside the magnetic core and the release of internal stress, and ensures the stability of the heat treatment quality of the amorphous nanocrystalline magnetic core under different pressure conditions.

[0045] Working principle:

[0046] In the first step, the operator first removes the support tray assembly 42, places the amorphous nanocrystalline magnetic core to be heat-treated on the support tray assembly 42, and then installs the fixing block 41 on the support tray assembly 42 onto the support base 39 with screws. Next, the furnace door 12 is closed, the heat treatment parameters are adjusted, and the heat treatment process for the amorphous nanocrystalline magnetic core is started. Simultaneously, the motor 27 and the external atmosphere conveyor connected to the second air pipe 56 are turned on. The power output from the motor 27 is transmitted to the first gear 31 via the coupling 28 and the first rotating rod 29, driving the first gear 31 to rotate. The first gear 31 simultaneously meshes with the ring gear 26 and the second gear 34, driving the ring gear 26 to rotate its moving ring inside the first air slip ring 25, thereby driving... The rotating ring 32 and the three-headed air outlet pipe 35 rotate synchronously. At the same time, the second gear 34 rotates, driving the rotating drum 33 and its auxiliary structure to rotate at the center of the sealing disc 63, thereby driving the bearing seat 39, the fixed block 41 and the bearing tray group 42 to rotate synchronously, realizing the reverse rotation of the bearing tray group 42 and the three-headed air outlet pipe 35. During this process, the external atmosphere conveyor delivers the protective atmosphere to the first air slip ring 25 through the second air pipe 56, and then the first air slip ring 25 distributes it to each three-headed air outlet pipe 35 to spray the amorphous nanocrystalline magnetic core on the bearing tray group 42 in all directions. Through the relative movement of the atmosphere and the magnetic core, the atmosphere is wrapped without dead angles, avoiding the formation of atmosphere dead angles on the surface of the magnetic core and the stacking gaps, and ensuring uniform anti-oxidation of the magnetic core during the heat treatment process.

[0047] In the second step, when motor 27 is running, its output shaft drives the second rotating rod 43 to rotate synchronously via pulley and transmission belt 44. The second rotating rod 43 drives the fixed disk 45 to rotate, and the fixed disk 45 drives the moving ring of the second air slip ring 53 to rotate, thereby driving the slider 47 and the first ball joint hinge 48 in the slide groove 46 to rotate synchronously. Since there is an eccentricity between the rotation centers of the first ball joint hinge 48 and the second ball joint hinge 49, and the first ball joint hinge 48 is rigidly connected to the slider 47, when the first ball joint hinge 48 rotates, it drives the radial direction through the connecting rod 51. The force is transmitted to the second ball joint 49, and then to the key post 37 via the connecting ring 38. The key post 37 is constrained by the axial limit of the keyway 36, which converts the radial force into the axial driving force, causing the key post 37 to slide back and forth along the keyway 36. This, in turn, drives the bearing seat 39, the fixing block 41 and the bearing tray assembly 42 to slide back and forth synchronously, thereby achieving high-amplitude oscillation of the magnetic core during rotation, accelerating the diffusion of the material inside the magnetic core and the relaxation of internal stress, while also destroying the static gas film on the surface of the magnetic core and improving the contact efficiency between the protective atmosphere and the surface of the magnetic core.

[0048] Thirdly, the high-temperature resistant pressure diaphragm 19 is flexibly installed inside the sealing cylinder 17 via the return spring 18, and the sealing cylinder 17 is connected to the heating chamber 14. When the pressure inside the heating chamber 14 increases, the pressure acts on the high-temperature resistant pressure diaphragm 19, pushing it to move downward within the sealing cylinder 17, compressing the return spring 18 and causing the sliding rod 23 and piston head 62 to move downward simultaneously. The piston head 62 slides downward within the piston cylinder 22, compressing the gas inside the piston cylinder 22, causing this gas to be output in two paths, one of which is output through the third gas pipe 59. The gas is fed to the second single-acting cylinder 58, which drives the piston rod of the second single-acting cylinder 58 to extend, causing the gate valve 57 to descend, reducing the amount of atmosphere delivered from the second gas pipe 56 to the first gas slip ring 25, thus preventing poor airflow in the furnace under high pressure. Another path delivers the gas to the stationary ring of the second gas slip ring 53 via the fourth gas pipe 61, and then from the moving ring of the second gas slip ring 53 to the reset port of the first single-acting cylinder 52 via the first gas pipe 55. This drives the piston rod of the first single-acting cylinder 52 to move the slider 47 along the slide groove 46 in a reset-type sliding motion, thereby pushing the first ball joint. Chain 48 moves toward the center of fixed disk 45, reducing the eccentricity between the first ball joint hinge 48 and the second ball joint hinge 49, thus adaptively reducing the oscillation amplitude of the bearing tray assembly 42. This avoids excessive oscillation under high pressure that could damage the protective gas film on the magnetic core surface and reduces the risk of localized oxidation of the magnetic core. When the internal pressure of the heating chamber 14 decreases, the return spring 18 releases its elastic potential energy, pushing the high-temperature pressure diaphragm 19 upward to reset, thereby causing the sliding rod 23 and piston head 62 to move upward synchronously. The internal pressure of the piston cylinder 22 is released, and at this time, the first single-acting cylinder 5... 2. The internal springs of the second single-acting cylinder 58 respectively initiate the reset action. The piston rod of the second single-acting cylinder 58 retracts, causing the gate valve 57 to rise, restoring the normal air supply from the second air pipe 56 to the first air slip ring 25. The piston rod of the first single-acting cylinder 52 retracts, causing the slider 47 and the first ball joint hinge 48 to reset to a certain extent, restoring the initial eccentricity between the first ball joint hinge 48 and the second ball joint hinge 49, so that the bearing tray assembly 42 returns to the initial oscillation amplitude, ensuring the air spraying efficiency and oscillation relaxation effect under low pressure.

[0049] The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A rapid heat treatment apparatus for amorphous nanocrystalline magnetic cores, comprising a heat treatment furnace (11), wherein a furnace door (12) is hinged to the surface of the heat treatment furnace (11), four corner base columns (13) are fixedly installed at the lower end of the heat treatment furnace (11), and a heating chamber (14) is provided inside the heat treatment furnace (11), characterized in that, The bottom of the heating chamber (14) is provided with a through groove (15), and a fixed shell (16) is fixedly installed at the lower end of the heat treatment furnace (11); A driven pressure structure is fixedly installed at the lower end of the heat treatment furnace (11); The inner side of the fixed shell (16) is provided with a moving atmosphere structure, which can spray atmosphere on the amorphous nanocrystalline magnetic core in a moving manner, reducing the atmosphere dead angle on the amorphous nanocrystalline magnetic core. The motion atmosphere structure is equipped with an integrated rotating and oscillating bearing structure, which can drive the amorphous nanocrystalline magnetic core to oscillate up and down and rotate synchronously. The rotating and oscillating integrated bearing structure is provided with an adaptive adjustment structure. The adaptive adjustment structure can control the amount of air sprayed and the oscillation amplitude of the moving atmosphere structure and the rotating and oscillating integrated bearing structure according to the pressure inside the heating chamber (14) through the driven pressure structure. The driven pressure structure includes a sealing cylinder (17), which is fixedly installed at the lower end of the heat treatment furnace (11) and is connected to the heating chamber (14). A return spring (18) is fixedly installed inside the sealing cylinder (17), and a high-temperature pressure diaphragm (19) is fixedly installed at the end of the return spring (18). A sliding rod (23) is fixedly installed on the inner side of the high-temperature pressure diaphragm (19). The end of the sliding rod (23) extends to the outside of the heat treatment furnace (11). The sliding rod (23) is slidably installed with the sealing cylinder (17). A ring frame (21) is fixedly installed on the circumferential surface of the sealing cylinder (17). A piston cylinder (22) is fixedly installed on the inner side of the ring frame (21). A piston head (62) is fixedly installed at the lower end of the sliding rod (23). The piston head (62) is slidably installed inside the piston cylinder (22). The motion atmosphere structure includes a first fixed frame (24), and a first air slip ring (25) is provided on the inner side of the first fixed frame (24). The bottom of the fixed shell (16) is rotatably mounted with a second rotating rod (43). A fixed plate (45) is fixedly installed at the upper end of the second rotating rod (43), and a sliding groove (46) is provided inside the fixed plate (45). The adaptive adjustment structure includes a first single-acting cylinder (52), which is embedded in the side wall of the slide groove (46). The output shaft of the first single-acting cylinder (52) is located inside the slide groove (46) and is fixedly installed with the slider (47). A second air slip ring (53) is provided on the circumferential surface of the fixed plate (45). The moving ring of the second air slip ring (53) is fixedly installed with the fixed plate (45). A second fixed frame (54) is fixedly installed inside the fixed shell (16). The second fixed frame (54) is fixedly installed with the fixed ring of the second air slip ring (53). A first air pipe (55) is fixedly connected between the reset air port of the first single-acting cylinder (52) and the air outlet of the moving ring of the second air slip ring (53). The inlet of the first air slip ring (25) is fixedly connected to the second air pipe (56). Part of the second air pipe (56) is located outside the fixed shell (16). A gate valve (57) is provided on the circumferential surface of the second air pipe (56). A second single-acting cylinder (58) is provided inside the gate valve (57). A third air pipe (59) is fixedly connected between the inlet of the second single-acting cylinder (58) and the outlet of the piston cylinder (22). A fourth air pipe (61) is fixedly connected around the third air pipe (59). The fourth air pipe (61) is fixedly connected to the fixed ring of the second air slip ring (53).

2. The rapid heat treatment apparatus for amorphous nanocrystalline magnetic cores as described in claim 1, characterized in that, The first fixing frame (24) is fixedly installed inside the fixing shell (16), the fixed ring of the first air slip ring (25) is fixedly installed with the first fixing frame (24), the inner side of the moving ring of the first air slip ring (25) is fixedly installed with a ring gear (26), and the bottom of the fixing shell (16) is fixedly installed with a motor (27).

3. The rapid heat treatment apparatus for amorphous nanocrystalline magnetic cores as described in claim 2, characterized in that, The output shaft of the motor (27) is provided with a coupling (28), and a first rotating rod (29) is fixedly installed at the other end of the coupling (28). A first gear (31) is fixedly installed on the circumferential surface of the first rotating rod (29). The first gear (31) meshes with the ring gear (26). A rotating ring (32) is rotatably installed on the inner wall of the through groove (15). A sealing disc (63) is fixedly installed on the inner side of the rotating ring (32).

4. The rapid heat treatment apparatus for amorphous nanocrystalline magnetic cores as described in claim 3, characterized in that, A rotating cylinder (33) is rotatably mounted at the center of the sealing disc (63). A second gear (34) is fixedly mounted on the circumferential surface of the rotating cylinder (33). The second gear (34) meshes with the first gear (31). A plurality of three-headed air outlet pipes (35) are fixedly mounted on the rotating ring (32). One end of the bottom of the three-headed air outlet pipe (35) is fixedly connected to the air outlet of the moving ring of the first air slip ring (25).

5. The rapid heat treatment apparatus for amorphous nanocrystalline magnetic cores as described in claim 1, characterized in that, The rotating and oscillating integrated bearing structure includes a keyway (36), which is opened inside the rotating cylinder (33). A key post (37) is slidably installed inside the keyway (36). A connecting ring (38) is rotatably installed at the lower end of the key post (37). The key post (37) is partially located inside the heating chamber (14). A bearing seat (39) is fixedly installed at the upper end of the key post (37). A fixing block (41) is threadedly installed inside the bearing seat (39). A bearing tray assembly (42) is provided at the upper end of the fixing block (41). The bearing tray assembly (42) is located inside the moving atmosphere structure and inside the heating chamber (14).

6. The rapid heat treatment apparatus for amorphous nanocrystalline magnetic cores as described in claim 5, characterized in that, A transmission belt (44) is wound around the output shaft of the second rotating rod (43) and the motor (27) via a pulley. A slider (47) is slidably installed inside the slide groove (46). A first ball joint hinge (48) is fixedly installed at the upper end of the slider (47). A second ball joint hinge (49) is fixedly installed at the lower end of the connecting ring (38). A connecting rod (51) is fixedly installed between the ball joints of the first ball joint hinge (48) and the second ball joint hinge (49).

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