Magnetic core sintering device

Abstract

The invention relates to a magnetic core sintering device. The device comprises an outer furnace body; the first inner furnace body and the second inner furnace body are both located in the outer furnace body, the first inner furnace body is located on the upstream of the second inner furnace body, and the sintering temperature of the first inner furnace body is smaller than that of the second inner furnace body; the first moving assembly is fixedly provided with a first carrier, the first carrier is bonded with a second carrier, the second carrier is bonded with a plurality of magnetic cores, and the magnetic cores are arranged in multiple rows and multiple columns; and the second moving assembly comprises a tray capable of being located on the lower side of the second carrier, a plurality of abutting strips arranged at intervals are arranged on the side face, facing the second carrier, of the tray in a protruding mode, all the abutting strips can abut against the second carrier, the magnetic cores are located between the adjacent abutting strips, and therefore it is guaranteed that the magnetic cores are evenly heated.

Description

Technical Field

[0001] The present invention relates to the field of magnetic core sintering equipment, and particularly to a magnetic core sintering device. Background Art

[0002] An inductive element is an energy storage element. One of the core components of an inductor is a magnetic core. One of the manufacturing processes of the magnetic core is sintering after silver dipping. In existing sintering devices, generally there is only one furnace body for sintering, and the magnetic cores are directly stacked and placed in a tray, and then transported to the furnace body through the tray for sintering, which easily causes uneven heating of the silver layer of the magnetic cores. Summary of the Invention

[0003] The purpose of the present invention is to provide a magnetic core sintering device, which has the characteristics of uniform heating of the silver layer of the magnetic core and has good applicability.

[0004] To achieve the above purpose, the present invention adopts the following technical solutions:

[0005] A magnetic core sintering device, comprising: an outer furnace body;

[0006] A first inner furnace body and a second inner furnace body, both located inside the outer furnace body. The first inner furnace body is located upstream of the second inner furnace body, and the sintering temperature of the first inner furnace body is lower than that of the second inner furnace body;

[0007] A first moving assembly, which fixes a first carrier. The first carrier is bonded with a second carrier, and the second carrier is bonded with a plurality of magnetic cores. Each of the magnetic cores is arranged in multiple rows and multiple columns;

[0008] A second moving assembly, including a tray that can be located under the second carrier. The side of the tray facing the second carrier protrudes with a plurality of spaced-apart abutting strips. Each of the abutting strips can abut against the second carrier, and the magnetic core is located between adjacent abutting strips;

[0009] Wherein, the first moving assembly moves to the first inner furnace body and moves vertically to make the second carrier abut against the abutting strip. The first inner furnace body heats to separate the second carrier from the first carrier. The tray drives the second carrier and the magnetic cores to move to the second inner furnace body, and the second inner furnace body heats to separate the magnetic cores from the second carrier.

[0010] Preferably, at least two of the abutting strips are provided with fixing pins on the side facing the second carrier. The fixing pins can puncture the second carrier to limit the movement of the second carrier.

[0011] Preferably, the tray is a metal tray, and the tray can abut against the first inner furnace body and the second inner furnace body;

[0012] Alternatively, the tray is a flexible tray.

[0013] Preferably, the magnetic core sintering device further includes a first air extraction assembly and a second air extraction assembly. The first air extraction assembly includes a first air extraction cylinder, a first fan and a first filter element located within the first air extraction cylinder. One end of the first air extraction cylinder communicates with the first inner furnace body, and the first fan drives the air in the first inner furnace body to be discharged through the first filter element.

[0014] The second air extraction assembly includes a second air extraction cylinder, a second fan and a second filter element located within the second air extraction cylinder. One end of the second air extraction cylinder communicates with the second inner furnace body, and the second fan drives the air in the second inner furnace body to be discharged through the second filter element.

[0015] Preferably, the magnetic core sintering device further includes a third air extraction assembly. The third air extraction assembly includes a third air extraction cylinder, a third fan and a third filter element located within the third air extraction cylinder. One end of the third air extraction cylinder communicates with the outer furnace body, and the third fan drives the air in the outer furnace body to be discharged through the third filter element.

[0016] Preferably, the magnetic core sintering device further includes a gas purification furnace body fixedly arranged on the outer furnace body, and the gas purification furnace body communicates with the first air extraction assembly, the second air extraction assembly and the third air extraction assembly.

[0017] Preferably, the magnetic core sintering device further includes a first heating assembly and a second heating assembly. The first heating assembly heats the first inner furnace body to 100 - 120 °C, and the second heating assembly heats the second inner furnace body to 600 - 700 °C.

[0018] Preferably, the magnetic core sintering device further includes a heat insulation plate located within the outer furnace body, and the heat insulation plate is located between the first inner furnace body and the second inner furnace body.

[0019] Preferably, both the first inner furnace body and the second inner furnace body are stainless steel furnace bodies.

[0020] Preferably, the first carrier and the second carrier are bonded by a first adhesive, and the second carrier and the magnetic core are bonded by a second adhesive. Both the first adhesive and the second adhesive are pyrolytic adhesives, and the adhesive loss temperature of the first adhesive is less than that of the second adhesive.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0022] In the above technical solution, a magnetic core sintering device is provided. First, the magnetic core is bonded to the second carrier, then the second carrier is bonded to the first carrier, and then the first inner furnace body is used for heating to sinter the magnetic core for the first time, and the second carrier is separated from the first carrier. At this time, the second carrier drops onto the tray, and the magnetic core is located between adjacent abutting strips, so as to keep the magnetic core neat and prevent the silver layer on the magnetic core from being blocked, thereby ensuring uniform heating of the magnetic core. Then, the second inner furnace body is used for heating to sinter the magnetic core for the second time, and the magnetic core is separated from the second carrier. Through two times of heating, the present invention can not only realize the separation of the second carrier from the first carrier and the separation of the magnetic core from the second carrier, but also sinter the magnetic core twice, thereby further ensuring uniform heating of the magnetic core. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the magnetic core sintering device provided by an embodiment of the present invention;

[0024] Figure 2 It is an assembly schematic diagram of one perspective of the outer furnace body, heat insulation plate, first air extraction component, second air extraction component, and third air extraction component provided by an embodiment of the present invention;

[0025] Figure 3 It is an assembly schematic diagram of another perspective of the outer furnace body, heat insulation plate, first air extraction component, second air extraction component, and third air extraction component provided by an embodiment of the present invention;

[0026] Figure 4 It is an assembly schematic diagram of the first inner furnace body, second inner furnace body, first moving component, second moving component, first carrier, second carrier, first air extraction component, second air extraction component, and third air extraction component provided by an embodiment of the present invention;

[0027] Figure 5 It is an exploded schematic diagram of the first air extraction component, second air extraction component, and third air extraction component provided by an embodiment of the present invention;

[0028] Figure 6 It is a schematic diagram of the first inner furnace body, second inner furnace body, first moving component, second moving component, first carrier, second carrier, first air extraction component, second air extraction component, third air extraction component, first heating component, and second heating component provided by an embodiment of the present invention;

[0029] Figure 7 It is a schematic diagram of the magnetic core, first moving component, second moving component, first carrier, and second carrier provided by an embodiment of the present invention;

[0030] Figure 8 It is a schematic diagram of the magnetic core provided by an embodiment of the present invention.

[0031] 1. Magnetic core; 11. Silver layer; 21. Outer furnace body; 22. First inner furnace body; 23. Second inner furnace body; 24. Heat insulation plate; 31. First moving assembly; 32. Second moving assembly; 321. Tray; 322. Abutting strip; 323. Fixed pin; 324. Conveyor belt; 4. First carrier; 5. Second carrier; 61. First air extraction assembly; 611. First air extraction cylinder; 612. First fan; 613. First filter element; 62. Second air extraction assembly; 621. Second air extraction cylinder; 622. Second fan; 623. Second filter element; 63. Third air extraction assembly; 631. Third air extraction cylinder; 632. Third fan; 633. Third filter element; 7. Gas purification furnace body; 81. First heating assembly; 82. Second heating assembly. Detailed implementation mode

[0032] The present invention will be described in more detail below in conjunction with the accompanying drawings. It should be noted that the description of the present invention with reference to the accompanying drawings is only illustrative and not restrictive. Various different embodiments can be combined with each other to form other embodiments not shown in the following description.

[0033] Please refer to Figures 1 to 8 , the present invention provides a magnetic core sintering device, including: an outer furnace body 21; a first inner furnace body 22 and a second inner furnace body 23 are both located in the outer furnace body 21, the first inner furnace body 22 is located upstream of the second inner furnace body 23, and the sintering temperature of the first inner furnace body 22 is lower than that of the second inner furnace body 23; a first moving assembly 31 is fixed with a first carrier 4, the first carrier 4 is bonded with a second carrier 5, the second carrier 5 is bonded with a plurality of magnetic cores 1, and the magnetic cores 1 are arranged in multiple rows and columns; the second moving assembly 32 includes a tray 321 that can be located under the second carrier 5, and a plurality of spaced abutting strips 322 protrude from the side of the tray 321 facing the second carrier 5, and each abutting strip 322 can abut against the second carrier 5, and the magnetic core 1 is located between adjacent abutting strips 322; wherein, the first moving assembly 31 moves to the first inner furnace body 22 and moves in the vertical direction to make the second carrier 5 abut against the abutting strip 322, the first inner furnace body 22 is heated to make the second carrier 5 separate from the first carrier 4, the tray 321 drives the second carrier 5 and the magnetic core 1 to move to the second inner furnace body 23, and the second inner furnace body 23 is heated to make the magnetic core 1 separate from the second carrier 5.

[0034] A magnetic core sintering device provided by the present invention first bonds the magnetic core 1 to the second carrier 5, then bonds the second carrier 5 to the first carrier 4, and then heats through the first inner furnace body 22 to sinter the magnetic core 1 for the first time, and makes the second carrier 5 separate from the first carrier 4. At this time, the second carrier 5 drops onto the tray 321, and the magnetic core 1 is located between adjacent abutting strips 322, so as to keep the magnetic core 1 neat and prevent the silver layer 11 on the magnetic core 1 from being blocked, thereby ensuring uniform heating of the magnetic core 1. Then, it is heated through the second inner furnace body 23 to perform the second sintering on the magnetic core 1, and the magnetic core 1 is separated from the second carrier 5. Through two times of heating, the present invention can not only realize the separation of the second carrier 5 from the first carrier 4 and the separation of the magnetic core 1 from the second carrier 5, but also sinter the magnetic core 1 twice, thereby further ensuring uniform heating of the magnetic core 1.

[0035] It should be clear that the first moving component 31 can move in the horizontal direction. After the silver coating process is completed, the first moving component 31 can drive the first carrier 4, the second carrier 5, and the magnetic core 1 into the first inner furnace body 22. The first moving component 31 can also move in the vertical direction. At this time, the first carrier 4, the second carrier 5, and the magnetic core 1 move from top to bottom until the second carrier 5 abuts against the abutting strip 322. After the second carrier 5 separates from the first carrier 4, the first moving component 31 first drives the first carrier 4 to move from top to bottom, and then horizontally drives the first carrier 4 to the previous process to form a cycle. The second moving component 32 may further include a conveyor belt 324. The tray 321 can be fixed to the conveyor belt 234, and the conveyor belt 234 can drive the tray 321 to reciprocate between the first inner furnace body 22 and the second inner furnace body 23.

[0036] After heating in the first inner furnace body 22, the second carrier 5 separates from the first carrier 4. At this time, the second carrier 5 drops onto the tray 321. In order to prevent relative movement between the second carrier 5 and the tray 321, thereby affecting the specific position of the magnetic core 1, at least two abutting strips 322 are provided with fixing pins 323 on the side facing the second carrier 5. The fixing pins 323 can pierce the second carrier 5 to limit the movement of the second carrier 5.

[0037] It should be noted that the first carrier 4 is a fiberglass board, and the second carrier 5 is a fiberglass cloth. The rigidity of the fiberglass cloth is relatively low. When the second carrier 5 drops onto the tray 321, it may be distorted due to the mass of the magnetic core 1. In order to prevent this situation, by piercing the second carrier 5 with the fixing pins 323, the movement of the second carrier 5 can be restricted.

[0038] In this embodiment, fixing pins 323 are provided on the abutting strips 322 on both sides. In other embodiments, fixing pins 323 can also be provided on all the abutting strips 322, which is not limited herein. Additionally, in order for the fixing pins 323 to easily pierce the second carrier 5, a plurality of through holes can be provided at corresponding positions of the second carrier 5, and each fixing pin 323 can be inserted into each through hole in one-to-one correspondence.

[0039] Very importantly, in order to further ensure the uniformity of the heat received by the magnetic core 1, the tray 321 is a metal tray, and the tray 321 can abut against the first inner furnace body 22 and the second inner furnace body 23. Additionally, the abutting strips 322, fixing pins 323, etc. can all be made of metal.

[0040] It can be envisioned that metal has good thermal conductivity, and the tray 321 can abut against the first inner furnace body 22 and the second inner furnace body 23. Therefore, the first inner furnace body 22 and the second inner furnace body 23 can directly conduct the temperature to the tray 321. When the first inner furnace body 22 is heated, the abutting strip 322 can directly abut against the second carrier 5. Therefore, the tray 321 can directly conduct the temperature to the second carrier 5 through the abutting strip 322, preventing the second carrier 5 from being unable to separate from the first carrier 4 due to temperature issues. And since the magnetic core 1 is located between adjacent abutting strips 322, the adjacent abutting strips 322 can heat the magnetic core 1, and the second carrier 5 can also heat the magnetic core 1. The magnetic core 1 is heated from all directions, so that the magnetic core 1 can be heated more evenly. When the second inner furnace body 23 is heated, the adjacent abutting strips 322 can heat the magnetic core 1, and since the abutting strip 322 abuts against the second carrier 5, the abutting strip 322 can also heat the second carrier 5, preventing the second carrier 5 from being unable to separate from the magnetic core 1 due to temperature issues.

[0041] Additionally, since the fixing pins 323 are directly inserted into the second carrier 5, the fixing pins 323 can also play a certain role in heating.

[0042] The tray 321 is a flexible tray. It can be envisioned that when the second inner furnace body 23 is heated and sintered, the second carrier 5 separates from the magnetic core 1. At this time, the magnetic core 1 will fall onto the tray 321, and the flexible tray can reduce the damage to the magnetic core 1 when it falls.

[0043] Furthermore, the tray 321 can also be formed by a combination of a partial metal tray and a partial flexible tray. For example, the part of the tray 321 located under the magnetic core 1 is a flexible tray, and the remaining part can be a metal tray.

[0044] The magnetic core sintering device further includes a first air extraction assembly 61 and a second air extraction assembly 62. The first air extraction assembly 61 includes a first air extraction cylinder 611, a first fan 612 and a first filter element 613 located inside the first air extraction cylinder 611. One end of the first air extraction cylinder 611 is connected to the first inner furnace body 22, and the first fan 612 drives the air in the first inner furnace body 22 to be discharged through the first filter element 613. The second air extraction assembly 62 includes a second air extraction cylinder 621, a second fan 622 and a second filter element 623 located inside the second air extraction cylinder 621. One end of the second air extraction cylinder 621 is connected to the second inner furnace body 23, and the second fan 622 drives the air in the second inner furnace body 23 to be discharged through the second filter element 623.

[0045] The magnetic core sintering device further includes a third air extraction assembly 63. The third air extraction assembly 63 includes a third air extraction cylinder 631, a third fan 632 and a third filter element 633 located inside the third air extraction cylinder 631. One end of the third air extraction cylinder 631 is connected to the outer furnace body 21, and the third fan 632 drives the air in the outer furnace body 21 to be discharged through the third filter element 633.

[0046] The magnetic core sintering device further includes a gas purification furnace body 7 fixedly arranged on the outer furnace body 21, and the gas purification furnace body 7 is connected to the first air extraction assembly 61, the second air extraction assembly 62 and the third air extraction assembly 63.

[0047] The first carrier 4 and the second carrier 5 are bonded by a first adhesive, and the second carrier 5 and the magnetic core 1 are bonded by a second adhesive. Both the first adhesive and the second adhesive are pyrolytic adhesives, and the adhesive loss temperature of the first adhesive is less than that of the second adhesive.

[0048] It can be imagined that during the process of heating and losing adhesion of the first adhesive and the second adhesive, polluting gases will be released. In order to treat the polluting gases, the first fan 612 can filter the gas in the first inner furnace body 22 through the first filter element 613 and then discharge it into the gas purification furnace body 7. The second fan 622 can filter the gas in the second inner furnace body 23 through the second filter element 623 and then discharge it into the gas purification furnace body 7. Of course, the gas purification furnace body 7 can be further provided with gas purification and circulation equipment to further purify and recycle the gas in the gas purification furnace body 7.

[0049] In addition, during the actual working process, the gas in the first inner furnace body 22 and the second inner furnace body 23 may overflow into the outer furnace body 21. At this time, the third fan 632 can filter the gas in the outer furnace body 21 through the third filter element 633 and then discharge it into the gas purification furnace body 7.

[0050] Specifically, three through holes can be provided on the outer furnace body 21, and a first air extraction cylinder 611, a second air extraction cylinder 621, and a third air extraction cylinder 631 are respectively fixed in the three through holes. Two ends of the first air extraction cylinder 611 are respectively communicated with the gas purification furnace body 7 and the first inner furnace body 22, two ends of the second air extraction cylinder 621 are respectively communicated with the gas purification furnace body 7 and the second inner furnace body 23, and two ends of the third air extraction cylinder 631 are respectively communicated with the gas purification furnace body 7 and the outer furnace body 21. In addition, the first filter element 613, the second filter element 623, and the third filter element 633 can be products with a filtering function such as activated carbon packets.

[0051] The magnetic core sintering device further includes a first heating component 81 and a second heating component 82. The first heating component 81 heats the first inner furnace body 22 to 100 - 120 °C, and the second heating component 82 heats the second inner furnace body 23 to 600 - 700 °C.

[0052] It can be conceived that the de-adhesion temperature of the first adhesive can be between 100 - 120 °C, and the de-adhesion temperature of the second adhesive can be between 600 - 700 °C.

[0053] Since the temperatures of the first inner furnace body 22 and the second inner furnace body 23 are different, in order to prevent the temperatures of the two from affecting each other, the magnetic core sintering device further includes a heat insulation plate 24 located inside the outer furnace body 21, and the heat insulation plate 24 is located between the first inner furnace body 22 and the second inner furnace body 23. The heat insulation plate 24 can block the transfer of temperature, so as to ensure that both the first inner furnace body 22 and the second inner furnace body 23 can operate normally at the set temperature.

[0054] Both the first inner furnace body 22 and the second inner furnace body 23 are stainless steel furnace bodies. Stainless steel has good fire resistance and can maintain good structural strength at high temperatures. In addition, stainless steel also has good thermal conductivity. When the first heating component 81 and the second heating component 82 heat, the temperatures of all parts of the first inner furnace body 22 and the second inner furnace body 23 made of stainless steel are the same, so as to ensure that the temperatures inside the first inner furnace body 22 and the second inner furnace body 23 are also relatively uniform, thereby further improving the uniform heating of the magnetic core 1.

[0055] The above embodiments are only the preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention belong to the scope of protection required by the present invention.

Claims

1. A magnetic core sintering device for sintering a magnetic core (1), characterized in that, Comprising: An outer furnace body (21); A first inner furnace body (22) and a second inner furnace body (23), both located within the outer furnace body (21), the first inner furnace body (22) being located upstream of the second inner furnace body (23), and the sintering temperature of the first inner furnace body (22) being lower than the sintering temperature of the second inner furnace body (23); A first moving assembly (31) fixedly provided with a first carrier (4), the first carrier (4) being bonded with a second carrier (5), the second carrier (5) being bonded with a plurality of magnetic cores (1), and the magnetic cores (1) being arranged in multiple rows and columns; A second moving assembly (32) including a tray (321) capable of being located below the second carrier (5), a plurality of spaced-apart abutting strips (322) protruding from a side surface of the tray (321) facing the second carrier (5), each of the abutting strips (322) being capable of abutting against the second carrier (5), and the magnetic cores (1) being located between adjacent abutting strips (322); Wherein, the first moving assembly (31) moves to the first inner furnace body (22) and moves in the vertical direction to make the second carrier (5) abut against the abutting strips (322), the first inner furnace body (22) is heated to separate the second carrier (5) from the first carrier (4), the tray (321) drives the second carrier (5) and the magnetic cores (1) to move to the second inner furnace body (23), and the second inner furnace body (23) is heated to separate the magnetic cores (1) from the second carrier (5).

2. The magnetic core sintering device according to claim 1, characterized in that, At least two of the abutting strips (322) are provided with fixing pins (323) on a side surface facing the second carrier (5), and the fixing pins (323) can puncture the second carrier (5) to limit the movement of the second carrier (5).

3. The magnetic core sintering device according to claim 1, characterized in that, The tray (321) is a metal tray, and the tray (321) can abut against the first inner furnace body (22) and the second inner furnace body (23); Alternatively, the tray (321) is a flexible tray.

4. The magnetic core sintering device according to claim 1, characterized in that, The magnetic core sintering device further includes a first air extraction assembly (61) and a second air extraction assembly (62). The first air extraction assembly (61) includes a first air extraction cylinder (611), and a first fan (612) and a first filter element (613) located within the first air extraction cylinder (611). One end of the first air extraction cylinder (611) is communicated with the first inner furnace body (22), and the first fan (612) drives the air in the first inner furnace body (22) to be discharged through the first filter element (613); The second air extraction assembly (62) includes a second air extraction cylinder (621), and a second fan (622) and a second filter element (623) located within the second air extraction cylinder (621). One end of the second air extraction cylinder (621) is communicated with the second inner furnace body (23), and the second fan (622) drives the air in the second inner furnace body (23) to be discharged through the second filter element (623).

5. The magnetic core sintering device according to claim 4, characterized in that, The magnetic core sintering device further includes a third air extraction assembly (63). The third air extraction assembly (63) includes a third air extraction cylinder (631), a third fan (632) and a third filter element (633) located inside the third air extraction cylinder (631). One end of the third air extraction cylinder (631) is communicated with the outer furnace body (21), and the third fan (632) drives the air in the outer furnace body (21) to be discharged through the third filter element (633).

6. The magnetic core sintering device according to claim 5, characterized in that, The magnetic core sintering device further includes a gas purification furnace body (7) fixedly arranged on the outer furnace body (21), and the gas purification furnace body (7) is communicated with the first air extraction assembly (61), the second air extraction assembly (62) and the third air extraction assembly (63).

7. The magnetic core sintering device according to claim 1, characterized in that The magnetic core sintering device further includes a first heating assembly (81) and a second heating assembly (82). The first heating assembly (81) heats the first inner furnace body (22) to 100-120 °C, and the second heating assembly (82) heats the second inner furnace body (23) to 600-700 °C.

8. The magnetic core sintering device according to claim 1, wherein, The magnetic core sintering device further includes a heat insulation plate (24) located inside the outer furnace body (21), and the heat insulation plate (24) is located between the first inner furnace body (22) and the second inner furnace body (23).

9. The magnetic core sintering device according to claim 1, characterized in that, Both the first inner furnace body (22) and the second inner furnace body (23) are stainless steel furnace bodies.

10. The magnetic core sintering device according to claim 1, characterized in that, The first carrier (4) and the second carrier (5) are bonded by a first adhesive, and the second carrier (5) and the magnetic core (1) are bonded by a second adhesive. Both the first adhesive and the second adhesive are pyrolytic adhesives, and the adhesive loss temperature of the first adhesive is less than that of the second adhesive.

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