Vacuum hot-press sintering furnace for ceramic alloy rod
Patent Information
- Application Number
- CN202522269773.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-27
- Publication Date
- 2026-09-15
- Estimated Expiration
- 2035-10-27
AI Technical Summary
传统的真空热压烧结炉在实现高温、高压和真空环境方面已较为成熟，但在实际生产中仍面临一些技术问题：在烧结完成后，炉体及核心部件的冷却效率低下，严重制约了生产效率，降低了设备利用率，其次，在热压过程中上下压板容易出现热压错位的问题，并且缺少对热压高度的检测，容易导致产品密度不均、产生内部裂纹或变形，影响成品率，为此，我们提出陶瓷合金棒真空热压烧结炉
[0010]进一步的，还包括密封圈和密封垫，所述密封圈设置在箱体的顶面且与加热壳的位置相对应，所述密封圈的内壁上固定设置有密封垫，密封圈卡在加热壳的外侧并配合内壁设置的密封垫可以有效的增加加热壳的密封性。
Smart Images
Figure CN224757516U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of hot pressing sintering furnace technology, specifically a vacuum hot pressing sintering furnace for ceramic alloy rods. Background Technology
[0002] Ceramic alloy rods (such as metal matrix composite rods reinforced or toughened with silicon carbide, silicon nitride, zirconium oxide, etc.) have a wide range of applications in aerospace, military, precision machinery and energy fields due to their excellent properties such as high strength, high hardness, wear resistance, high temperature resistance and good chemical stability. The preparation of such materials usually adopts powder metallurgy technology, among which vacuum hot pressing sintering is the key forming and densification process. Traditional vacuum hot pressing sintering furnaces are relatively mature in achieving high temperature, high pressure and vacuum environments, but they still face some technical problems in actual production: after sintering, the cooling efficiency of the furnace body and core components is low, which seriously restricts production efficiency and reduces equipment utilization. Secondly, during the hot pressing process, the upper and lower pressure plates are prone to hot pressing misalignment, and there is a lack of detection of the hot pressing height, which can easily lead to uneven product density, internal cracks or deformation, and affect the yield. To address these issues, we propose a vacuum hot pressing sintering furnace for ceramic alloy rods. Utility Model Content
[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide a vacuum hot pressing sintering furnace for ceramic alloy rods. The furnace uses an automatically opening and closing top sealing plate in conjunction with a rising and lowering heat dissipation jet pipe to quickly dissipate heat from the hot-pressed ceramic alloy rods. At the same time, the sliding installation of the limiting rod and the slider, in conjunction with the distance measuring sensor, prevents misalignment during the hot pressing process, which leads to a low product yield. This can effectively solve the problems in the background art.
[0004] To achieve the above objectives, this utility model provides the following technical solution: a vacuum hot pressing sintering furnace for ceramic alloy rods, comprising a housing and a hot pressing unit; Box body: A bracket is fixed on the rear side of the top surface, and a support frame is provided on the top surface inside the box body. The electric push rod on the top surface of the support frame is slidably connected to the through hole in the middle of the top surface of the box body. A heat dissipation unit is provided inside the support frame. Hot pressing unit: includes a heating shell, a main linear motor, a vacuum pump, a ceramic heating ring, a temperature controller, a hydraulic rod, and a pressure plate. The main linear motor is fixed inside the bracket, and the front side of the main linear motor's moving part is fixedly installed to the rear side of the heating shell. The vacuum pump is installed on the rear side of the bracket, and the air inlet pipe of the vacuum pump is connected to the air outlet on the top surface of the heating shell. The ceramic heating ring is fixed inside the heating shell. The temperature controller is located on the top surface of the housing. A hydraulic rod is fixed to the top surface of the heating shell, and the bottom end of the hydraulic rod is connected to the middle of the top surface of the pressure plate. The system also includes a controller, which is fixed to the top surface of the housing. The input ends of the electric push rod, main linear motor, vacuum pump, temperature controller, and hydraulic rod are electrically connected to the output end of the controller. The input end of the ceramic heating coil is electrically connected to the output end of the temperature controller. The input end of the controller is electrically connected to the output end of an external power supply.
[0005] The main linear motor is started to drive the heating shell to the top of the box and, together with the vacuum pump, to evacuate the inside of the heating shell to a vacuum state. The temperature controller controls the ceramic heating coil to heat the ceramic alloy rod mold, while the hydraulic rod drives the pressure plate to press down to complete the vacuum hot pressing sintering process of the ceramic alloy rod.
[0006] Furthermore, the hot pressing unit also includes a frame, a slider, a limiting rod, a placement seat, and a distance sensor. There are two frames, each fixed to one side of the top surface of the housing. The upper and lower sides of the frame's interior are connected to the two ends of the limiting rod. The slider is fixed to the side of the heating shell, with a sliding hole in the middle of the slider slidably installed with the limiting rod. The outer side of the slider is slidably installed with the interior of the frame. The placement seat is fixed to the top surface of the pressure plate, and a distance sensor is placed inside the placement seat. The output of the distance sensor is electrically connected to the input of the controller. The limiting rod and the frame are slidably connected to the slider to ensure stability during the lifting and lowering of the heating shell, thus maintaining good alignment between the internal pressure plate and the lower mold. Combined with the distance sensor inside the placement seat, the position of the pressure plate is monitored and fed back in real time, thereby precisely controlling the pressure of the hydraulic rod. This effectively avoids problems such as uneven product density, cracking, or deformation caused by bias pressure, significantly improving the dimensional accuracy, density, and consistency of the ceramic alloy rod.
[0007] Furthermore, the heat dissipation unit includes a secondary linear motor, a mounting bracket, an annular air pipe, a smart four-way valve, a solenoid valve, an air pump, a top plate, and heat dissipation jet pipes. The secondary linear motor is fixed inside the support frame. A mounting bracket is provided on the surface of the secondary linear motor's moving part. The mounting bracket is snapped onto the outside of the annular air pipe. Heat dissipation jet pipes are evenly distributed on the top surface of the annular air pipe. The heat dissipation jet pipes are slidably installed with through holes on the top surface of the housing. A top plate is installed at the top of the heat dissipation jet pipes. The air pump is placed on the bottom surface inside the housing. The air outlet of the air pump is connected to the air inlet at the bottom of the smart four-way valve. A solenoid valve is installed at the air inlet on the front side of the four-way valve. The air outlets at both ends of the intelligent four-way valve are connected to two air inlets on the bottom of the annular air pipe, respectively. The input ends of the auxiliary linear motor, the intelligent four-way valve, the solenoid valve, and the air pump are electrically connected to the output end of the controller. Cooling gas can be delivered to the annular air pipe through the air pump and the intelligent four-way valve. At the same time, activating the solenoid valve can also add inert gas to improve the cooling efficiency. The gas is then sprayed out through evenly distributed heat dissipation jet pipes. The auxiliary linear motor can drive the entire annular jet structure to move up and down, expanding the cooling area to avoid local overheating, thereby significantly improving equipment utilization and overall production efficiency.
[0008] Furthermore, the heat dissipation unit also includes a sealing plate, a plate groove, heat dissipation holes, a top rod, a fixing rod, a spring, and a connecting plate. The plate groove is opened on the top surface of the heating shell, and heat dissipation holes are opened inside the plate groove. There are two springs, which are fixed to the top surface inside the heating shell, and the bottom end of the spring is connected to the top surface of the connecting plate. A fixing rod is provided in the middle of the top surface of the connecting plate. The top end of the fixing rod passes through the through groove on the top surface of the heating shell and is connected to one side of the bottom surface of the sealing plate. The sealing plate is engaged with the plate groove. There are two top rods, which are fixed to both sides of the top surface of the pressure plate. When the pressure plate rises with the hydraulic rod, the top rod at the top will push the sealing plate out of the plate groove to open the heat dissipation holes for cooling. When the pressure plate descends for sintering, the top rod disengages, and the sealing plate automatically falls and seals the plate groove under the reset action of the spring. This ensures the vacuum sealing of the heating chamber during sintering without manual intervention.
[0009] Furthermore, it also includes a vacuum gauge and a temperature sensor. The vacuum gauge is installed on the surface of the heating shell, and the detection probe on the rear side of the temperature sensor is inserted into the through hole on the surface of the heating shell. The output end of the temperature sensor is electrically connected to the input end of the controller. The vacuum gauge and temperature sensor realize real-time monitoring and feedback of the vacuum degree and temperature, the core environmental parameters of sintering, so as to facilitate timely adjustment by personnel.
[0010] Furthermore, it also includes a sealing ring and a sealing gasket. The sealing ring is set on the top surface of the housing and corresponds to the position of the heating shell. A sealing gasket is fixedly set on the inner wall of the sealing ring. The sealing ring is snapped on the outside of the heating shell and works in conjunction with the sealing gasket set on the inner wall to effectively increase the sealing performance of the heating shell.
[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This vacuum hot pressing sintering furnace for ceramic alloy rods has the following advantages: 1. The limiting rod and frame are slidably connected to the slider to ensure smooth lifting of the heating shell, thus maintaining good alignment between the internal pressure plate and the lower mold. Combined with a distance sensor inside the placement seat that monitors and provides real-time feedback on the pressure plate's position, the pressure of the hydraulic rod is precisely controlled. This effectively avoids problems such as uneven product density, cracking, or deformation caused by uneven pressure, significantly improving the dimensional accuracy, density, and consistency of the ceramic alloy rod. 2. Cooling gas is delivered to the annular air pipe via an air pump and an intelligent four-way valve. Simultaneously, activating the solenoid valve allows the introduction of inert gas to enhance cooling efficiency. The gas is then ejected through evenly distributed cooling jet pipes. A secondary linear motor drives the entire annular jet structure to move up and down, expanding the cooling area to prevent localized overheating, thereby significantly improving equipment utilization and overall production efficiency. 3. When the pressure plate rises with the hydraulic rod, the top rod at the top will lift the sealing plate out of the plate groove to open the heat dissipation holes for cooling. When the pressure plate descends for sintering, the top rod disengages, and the sealing plate automatically falls down under the reset action of the spring to tightly seal the plate groove. This ensures the vacuum sealing of the heating chamber during sintering without the need for manual intervention. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the heating shell of this utility model; Figure 3 This is a schematic diagram of the heat dissipation unit structure of this utility model; Figure 4 This utility model Figure 2 A magnified schematic diagram of the structure at point A in the middle.
[0013] In the diagram: 1. Housing, 2. Hot pressing unit, 21. Heating shell, 22. Main linear motor, 23. Vacuum pump, 24. Ceramic heating ring, 25. Temperature controller, 26. Hydraulic rod, 27. Pressure plate, 28. Frame, 29. Slider, 210. Limiting rod, 211. Placement seat, 212. Distance sensor, 3. Heat dissipation unit, 31. Secondary linear motor, 32. Mounting bracket, 33. Annular air pipe, 34. Intelligent four-way valve, 35. Solenoid valve, 36. Air pump, 37. Top plate, 38. Heat dissipation jet pipe, 39. Sealing plate, 310. Plate groove, 311. Heat dissipation hole, 312. Top rod, 313. Fixing rod, 314. Spring, 315. Connecting plate, 4. Bracket, 5. Support frame, 6. Electric push rod, 7. Vacuum gauge, 8. Temperature sensor, 9. Sealing ring, 10. Sealing gasket, 11. Controller. Detailed Implementation
[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0015] Please see Figure 1-4 This embodiment provides a technical solution: a vacuum hot pressing sintering furnace for ceramic alloy rods, including a housing 1 and a hot pressing unit 2; Box 1: A bracket 4 is fixed to the rear side of the top surface. A support frame 5 is installed on the top surface inside the box 1. The electric push rod 6 on the top surface of the support frame 5 is slidably connected to the through hole in the middle of the top surface of the box 1. The support frame 5 is equipped with a heat dissipation unit 3. The heat dissipation unit 3 includes a secondary linear motor 31, a mounting bracket 32, an annular air pipe 33, an intelligent four-way valve 34, a solenoid valve 35, an air pump 36, a top plate 37, and a heat dissipation jet pipe 38. The secondary linear motor 31 is fixed inside the support frame 5. The surface of the moving part of the secondary linear motor 31 is provided with a mounting bracket 32. The mounting bracket 32 is snapped onto the outside of the annular air pipe 33. The top surface of the annular air pipe 33 is evenly connected with heat dissipation jet pipes 38. The cooling jet pipe 38 is slidably installed on the top of the housing 1 through hole. A top plate 37 is installed on the top of the cooling jet pipe 38. The air pump 36 is placed on the bottom of the housing 1. The air outlet pipe of the air pump 36 is connected to the air inlet at the bottom of the intelligent four-way valve 34. A solenoid valve 35 is installed on the air inlet on the front side of the intelligent four-way valve 34. The air outlets at both ends of the intelligent four-way valve 34 are respectively connected to the two air inlets on the bottom of the annular air pipe 33. The input terminals of the auxiliary linear motor 31, the intelligent four-way valve 34, the solenoid valve 35, and the air pump 36 are electrically connected to the output terminal of the controller 11. Cooling gas can be delivered to the annular air pipe 33 through the air pump 36 and the intelligent four-way valve 34. At the same time, starting the solenoid valve 35 can also add inert gas. To improve cooling efficiency, heat dissipation is achieved through evenly distributed heat dissipation jet pipes 38. A secondary linear motor 31 drives the entire annular jet structure to move up and down, expanding the cooling area to prevent localized overheating, thereby significantly improving equipment utilization and overall production efficiency. The heat dissipation unit 3 also includes a closed plate 39, a plate groove 310, heat dissipation holes 311, a top rod 312, a fixing rod 313, springs 314, and a connecting plate 315. The plate groove 310 is located on the top surface of the heating shell 21, and heat dissipation holes 311 are provided inside the plate groove 310. Two springs 314 are fixed to the top surface inside the heating shell 21, with their bottom ends connected to the top surface of the connecting plate 315. A fixing rod 313 is provided in the middle of the top surface of the 5. The top end of the fixing rod 313 passes through the through groove on the top surface of the heating shell 21 and connects to one side of the bottom surface of the sealing plate 39. The sealing plate 39 is engaged with the plate groove 310. There are two push rods 312, which are fixed on both sides of the top surface of the pressure plate 27. When the pressure plate 27 rises with the hydraulic rod 26, the push rod 312 at the top will push the sealing plate 39 out of the plate groove 310 to open the heat dissipation hole 311 for cooling. When the pressure plate 27 descends for sintering, the push rod 312 disengages. Under the reset action of the spring 314, the sealing plate 39 automatically falls and seals the plate groove 310 tightly. This ensures the vacuum sealing of the heating chamber during sintering without manual intervention. Hot pressing unit 2 includes a heating shell 21, a main linear motor 22, a vacuum pump 23, a ceramic heating coil 24, a temperature controller 25, a hydraulic rod 26, and a pressure plate 27. The main linear motor 22 is fixed inside the bracket 4, and the front side of the main linear motor 22's mover seat is fixedly installed to the rear side of the heating shell 21. The vacuum pump 23 is installed on the rear side of the bracket 4, and the air inlet pipe of the vacuum pump 23 is connected to the air outlet on the top surface of the heating shell 21. The ceramic heating coil 24 is fixedly installed inside the heating shell 21. The temperature controller 25 is installed on the top surface of the housing 1. The top surface of the heating shell 21 is fixed with the hydraulic rod 26, and the bottom end of the hydraulic rod 26 is connected to the middle of the top surface of the pressure plate 27. The hot pressing unit 2 also includes a frame 28, a slider 29, a limiting rod 210, a placement seat 211, and a distance sensor 212. There are two frames 28, which are fixed to both sides of the top surface of the housing 1. The upper and lower sides of the inside of the frame 28 are respectively connected to the limiting rod 29. The two ends of 10 are connected, the slider 29 is fixed on the side of the heating shell 21, the sliding hole in the middle of the slider 29 is slidably installed with the limiting rod 210, the outer side of the slider 29 is slidably installed with the inside of the frame 28, the placement seat 211 is fixed on the top surface of the pressure plate 27, the placement seat 211 contains a distance sensor 212, the output end of the distance sensor 212 is electrically connected to the input end of the controller 11, the limiting rod 210 and the frame 28 are slidably connected with the slider 29 respectively to ensure that the heating shell 21 remains stable when it is raised and lowered, so that the internal pressure plate 27 and the lower mold always maintain good alignment, and combined with the distance sensor 212 in the placement seat 211 to monitor and feedback the position of the pressure plate 27 in real time, thereby accurately controlling the pressure of the hydraulic rod 26, thus effectively avoiding problems such as uneven product density, cracking or deformation caused by bias pressure, and significantly improving the dimensional accuracy, density and consistency of the ceramic alloy rod; The system includes a controller 11, which is fixed to the top surface of the housing 1. The inputs of the electric push rod 6, main linear motor 22, vacuum pump 23, temperature controller 25, and hydraulic rod 26 are electrically connected to the output of the controller 11. The input of the ceramic heating coil 24 is electrically connected to the output of the temperature controller 25. The input of the controller 11 is electrically connected to the output of an external power source. When the main linear motor 22 is started, it causes the heating shell 21 to cover the top surface of the housing 1, and the vacuum pump 23 evacuates the interior of the heating shell 21 to a vacuum state. The temperature controller 25 controls the ceramic heating coil 24 to heat the ceramic alloy rod mold. Simultaneously, the hydraulic rod 26 drives the pressure plate 27 to press down, completing the vacuum hot pressing sintering process of the ceramic alloy rod. The system also includes vacuum detection. Vacuum gauge 7 and temperature sensor 8 are mounted on the surface of heating shell 21. The detection probe on the rear side of temperature sensor 8 is inserted into the through hole on the surface of heating shell 21. The output of temperature sensor 8 is electrically connected to the input of controller 11. Vacuum gauge 7 and temperature sensor 8 realize real-time monitoring and feedback of the vacuum degree and temperature of the sintering core environment parameters, so as to facilitate timely adjustment by personnel. It also includes sealing ring 9 and sealing gasket 10. Sealing ring 9 is set on the top surface of the housing 1 and corresponds to the position of heating shell 21. Sealing gasket 10 is fixedly set on the inner wall of sealing ring 9. Sealing ring 9 is snapped on the outside of heating shell 21 and, together with sealing gasket 10 set on the inner wall, can effectively increase the sealing performance of heating shell 1.
[0016] The working principle of the vacuum hot pressing sintering furnace for ceramic alloy rods provided by this utility model is as follows: First, the mold is installed on the surface of the pressure plate 27 and the housing 1. The main linear motor 22 is started to drive the heating shell 21 to cover the top surface of the housing 1, and the vacuum pump 23 is used to evacuate the inside of the heating shell 21 into a vacuum state. The sealing ring 9 is stuck on the outside of the heating shell 21, and the sealing gasket 10 set on the inner wall can effectively increase the sealing performance of the heating shell 1. The temperature controller 25 controls the ceramic heating ring 24 to heat the ceramic alloy rod mold. At the same time, the hydraulic rod 26 drives the pressure plate 27 to press down to complete the vacuum hot pressing sintering process of the ceramic alloy rod. The limit rod 210 and the frame 28 are slidably connected to the slider 29 to ensure that the heating shell 21 remains stable when it is raised and lowered, so that the internal pressure plate 27 and the lower mold always maintain good alignment. Combined with the distance sensor 212 in the placement seat 211, the position of the pressure plate 27 is monitored and fed back in real time, thereby accurately controlling the pressure of the hydraulic rod 26, thus effectively avoiding problems such as uneven product density, cracking or deformation caused by bias pressure, and significantly improving the product quality. The dimensional accuracy, density, and consistency of the ceramic alloy rods are improved. The vacuum gauge 7 and temperature sensor 8 enable real-time monitoring and feedback of the vacuum degree and temperature, the core environmental parameters of the sintering process, facilitating timely adjustments by personnel. After hot pressing and sintering, the air pump 36 and intelligent four-way valve 34 can deliver cooling gas to the annular gas pipe 33. At the same time, activating the solenoid valve 35 can also add inert gas to improve cooling efficiency, which is then ejected through the evenly distributed heat dissipation jet pipe 38. The auxiliary linear motor 31 can drive the entire annular jet pipe. The structure moves up and down to expand the cooling area to avoid local overheating, thereby greatly improving equipment utilization and overall production efficiency. When the pressure plate 27 rises with the hydraulic rod 26, the top rod 312 at its top will lift the sealing plate 39 out of the plate groove 310 to open the heat dissipation hole 311 for easy cooling. When the pressure plate 27 descends for sintering, the top rod 312 disengages, and under the reset action of the spring 314, the sealing plate 39 automatically falls and tightly seals the plate groove 310. This ensures the vacuum sealing of the heating chamber during sintering without manual intervention.
[0017] It is worth noting that the controller 11 disclosed in the above embodiments is provided with buttons on its surface corresponding to the main linear motor 22, vacuum pump 23, temperature controller 25, hydraulic rod 26, distance sensor 212, auxiliary linear motor 31, intelligent four-way valve 34, solenoid valve 35, air pump 36, and temperature sensor 8. The controller 11 controls the operation of the main linear motor 22, vacuum pump 23, temperature controller 25, hydraulic rod 26, distance sensor 212, auxiliary linear motor 31, intelligent four-way valve 34, solenoid valve 35, air pump 36, and temperature sensor 8 using methods commonly used in the prior art.
[0018] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A vacuum hot pressing sintering furnace for ceramic alloy rods, characterized in that: Includes a housing (1) and a hot-pressing unit (2); Box (1): A bracket (4) is fixed on the rear side of the top surface. A support frame (5) is provided on the top surface inside the box (1). The electric push rod (6) on the top surface of the support frame (5) is slidably connected to the through hole in the middle of the top surface of the box (1). A heat dissipation unit (3) is provided inside the support frame (5). Hot pressing unit (2): includes heating shell (21), main linear motor (22), vacuum pump (23), ceramic heating ring (24), temperature controller (25), hydraulic rod (26) and pressure plate (27). The main linear motor (22) is fixed inside the bracket (4). The front side of the main linear motor (22) mover seat is fixedly installed with the rear side of the heating shell (21). The vacuum pump (23) is installed on the rear side of the bracket (4). The air inlet pipe of the vacuum pump (23) is connected to the air outlet on the top surface of the heating shell (21). The ceramic heating ring (24) is fixed inside the heating shell (21). The temperature controller (25) is installed on the top surface of the box (1). The top surface of the heating shell (21) is fixed with a hydraulic rod (26). The bottom end of the hydraulic rod (26) is connected to the middle of the top surface of the pressure plate (27). Among them, there is also a controller (11), which is fixed on the top surface of the housing (1). The input ends of the electric push rod (6), the main linear motor (22), the vacuum pump (23), the temperature controller (25) and the hydraulic rod (26) are electrically connected to the output end of the controller (11). The input end of the ceramic heating coil (24) is electrically connected to the output end of the temperature controller (25). The input end of the controller (11) is electrically connected to the output end of the external power supply.
2. The vacuum hot pressing sintering furnace for ceramic alloy rods according to claim 1, characterized in that: The hot pressing unit (2) also includes a frame (28), a slider (29), a limiting rod (210), a placement seat (211), and a distance sensor (212). There are two frames (28) and they are fixed on both sides of the top surface of the box (1). The upper and lower sides of the inside of the frame (28) are connected to the two ends of the limiting rod (210). The slider (29) is fixed on the side of the heating shell (21). The sliding hole in the middle of the slider (29) is slidably installed with the limiting rod (210). The outer side of the slider (29) is slidably installed with the inside of the frame (28). The placement seat (211) is fixed on the top surface of the pressure plate (27). The distance sensor (212) is placed inside the placement seat (211). The output end of the distance sensor (212) is electrically connected to the input end of the controller (11).
3. The vacuum hot pressing sintering furnace for ceramic alloy rods according to claim 1, characterized in that: The heat dissipation unit (3) includes a secondary linear motor (31), a mounting bracket (32), an annular air pipe (33), an intelligent four-way valve (34), a solenoid valve (35), an air pump (36), a top plate (37), and a heat dissipation jet pipe (38). The secondary linear motor (31) is fixed inside the support frame (5). The surface of the actuator of the secondary linear motor (31) is provided with a mounting bracket (32). The mounting bracket (32) is snapped onto the outside of the annular air pipe (33). The top surface of the annular air pipe (33) is uniformly connected with heat dissipation jet pipes (38). The heat dissipation jet pipes (38) are connected to the top surface of the housing (1). The through-hole sliding installation is provided. A top plate (37) is installed on the top of the heat dissipation jet pipe (38). The air pump (36) is placed on the bottom surface inside the box (1). The air outlet pipe of the air pump (36) is connected to the air inlet at the bottom of the intelligent four-way valve (34). A solenoid valve (35) is installed on the air inlet on the front side of the intelligent four-way valve (34). The air outlets at both ends of the intelligent four-way valve (34) are respectively connected to the two air inlets on the bottom surface of the annular air pipe (33). The input ends of the auxiliary linear motor (31), the intelligent four-way valve (34), the solenoid valve (35) and the air pump (36) are electrically connected to the output end of the controller (11).
4. The vacuum hot pressing sintering furnace for ceramic alloy rods according to claim 3, characterized in that: The heat dissipation unit (3) also includes a closed plate (39), a plate groove (310), a heat dissipation hole (311), a top rod (312), a fixing rod (313), a spring (314), and a connecting plate (315). The plate groove (310) is opened on the top surface of the heating shell (21), and the heat dissipation hole (311) is opened inside the plate groove (310). There are two springs (314) and they are fixed on the top surface inside the heating shell (21) on the left and right sides respectively. The bottom end of the spring (314) is connected to the top surface of the connecting plate (315). A fixing rod (313) is provided in the middle of the top surface of the connecting plate (315). The top end of the fixing rod (313) passes through the through groove on the top surface of the heating shell (21) and is connected to one side of the bottom surface of the closed plate (39). The closed plate (39) is engaged with the plate groove (310). There are two top rods (312) and they are fixed on both sides of the top surface of the pressure plate (27).
5. The vacuum hot pressing sintering furnace for ceramic alloy rods according to claim 1, characterized in that: It also includes a vacuum gauge (7) and a temperature sensor (8). The vacuum gauge (7) is installed on the surface of the heating shell (21). The detection probe on the rear side of the temperature sensor (8) is inserted into the through hole on the surface of the heating shell (21). The output end of the temperature sensor (8) is electrically connected to the input end of the controller (11).
6. The vacuum hot pressing sintering furnace for ceramic alloy rods according to claim 1, characterized in that: It also includes a sealing ring (9) and a sealing gasket (10). The sealing ring (9) is located on the top surface of the housing (1) and corresponds to the position of the heating shell (21). The sealing gasket (10) is fixedly provided on the inner wall of the sealing ring (9).