Efficient metal injection molding vacuum degreasing sintering furnace

Abstract

The invention relates to the technical field of sintering furnaces, and discloses an efficient metal injection molding vacuum degreasing sintering furnace which comprises a sintering furnace frame body, a furnace body is fixedly connected to the interior of the sintering furnace frame body, a furnace door is hinged to the open end of the furnace body, and a heating frame is arranged in the furnace body; a forming assembly used for sintering metal powder and adhesive mixtures injected into a mold cavity of the mold is arranged in the heating frame, and a vacuumizing assembly used for extracting air in the sintering furnace body is arranged on one side of the sintering furnace frame body. By arranging the detachable forming assembly and the forming mold, metal subjected to sintering forming can be conveniently replaced, the sintering position is constant, and it is effectively guaranteed that the quality of metal sintering blanks of the same batch is uniform; therefore, the air velocity in the heat conduction copper pipe is effectively improved, and the heat dissipation efficiency of inert gas in the conical shell is further improved through the heat conduction copper pipe.

Description

Technical Field

[0001] The invention relates to the technical field of sintering furnaces, in particular to a high-efficiency metal injection molding vacuum degreasing sintering furnace. Background Art

[0002] Metal powder injection molding is a new process that combines traditional powder metallurgy with plastic molding technology. It is a product of the intersection of multiple disciplines such as plastic molding technology, polymer chemistry, powder metallurgy technology and metal materials science. It can use molds for injection molding to quickly manufacture high-density, high-precision, and complex-shaped structural parts. It can quickly and accurately transform design ideas into products with certain structural and functional characteristics, and can directly mass-produce parts. It is a new revolution in the manufacturing technology industry.

[0003] The injection mechanism is as follows: a mixture of metal powder and binder is injected into the mold cavity at a certain temperature, speed and pressure through an injection machine, and a preform of a certain shape and size is obtained after cooling and shaping. The binder in the preform is then removed and sintered to obtain a part with certain mechanical properties.

[0004] After searching, the Chinese patent with publication number CN116857958A discloses a metal powder forming vacuum degreasing sintering furnace, including a furnace body, the outer wall of which is provided with an opening, and the discharge port is opened for discharging when the crucible moves outwards by driving the moving plate with an oil cylinder and cooperating with the feeding mechanism, and the discharge port is closed when the crucible moves inwards, and the inclined tube guides the metal powder raw material into the crucible, so that the raw material is automatically added. However, there are still the following problems:

[0005] 1. Since the temperature of the metal after sintering is high, it is easy to cause damage to the workers' skin when it is taken out manually, as the human skin has a low temperature resistance.

[0006] 2. When taking and placing the sintering mold, if the position of the sintering mold in the furnace changes every time, the metal blanks are heated evenly, so it is difficult to ensure the uniform quality of the same batch of metal sintered blanks;

[0007] 3. When the sintering mold is automatically picked up and placed, how to quickly pull the sintering mold out of the furnace and how to switch the sintering mold between loading and unloading at different positions are urgent problems to be solved;

[0008] 4. After the sintering of the metal sintered blank is completed, it is necessary to avoid contact with oxygen in the air and react with it while cooling it down. The cooling operation must avoid extreme cooling and cooling, which is also an urgent problem that needs to be solved. Summary of the invention

[0009] Technical issues solved

[0010] In view of the deficiencies in the prior art, the present invention provides a high-efficiency metal injection molding vacuum degreasing sintering furnace, which is mainly used to solve the problem that the temperature of the metal after sintering is high, and human skin has a low temperature resistance when it is taken out manually, which can easily cause damage to the worker's skin; when the sintering mold is taken out, if the position of the sintering mold in the furnace changes each time, the metal blank is heated evenly to different degrees, so it is difficult to ensure the uniform quality of the same batch of metal sintered blanks; when the sintering molding mold is automatically taken out, how to quickly pull the sintering molding mold out of the furnace, and how to realize the switching of loading and unloading of the sintering molding mold at different positions are problems that need to be solved urgently; and after the metal sintered blank is sintered, it is necessary to avoid contact with oxygen in the air to react while cooling it, and the cooling operation must meet the premise of avoiding extreme cooling and cooling. Cooling treatment is also a problem that needs to be solved urgently.

[0011] Technical Solution

[0012] To achieve the above object, the present invention provides the following technical solutions:

[0013] A high-efficiency metal injection molding vacuum degreasing sintering furnace comprises a sintering furnace frame, the interior of the sintering furnace frame is fixedly connected with the furnace body, the open end of the furnace body is hinged with a furnace door, the interior of the furnace body is provided with a heating frame, the heating frame is provided with a molding assembly for sintering the metal powder and adhesive mixture injected into the mold cavity, one side of the sintering furnace frame is provided with a vacuum extraction assembly for extracting air in the furnace body, one side of the sintering furnace frame is fixedly connected with a ventilation frame, the top of the ventilation frame is provided with a ventilation assembly for injecting inert gas into the furnace body, one end of the sintering furnace frame and located at a position relative to the open end of the furnace body is provided with a traction assembly for quickly taking out the molding assembly after sintering is completed, one side of the sintering furnace frame and located below the traction assembly is fixedly connected with a loading frame, and the top of the loading frame is provided with a loading and unloading assembly for moving the mold in the molding assembly.

[0014] Furthermore, the forming assembly includes two furnace guide rails, which are fixedly connected to the bottom inner wall of the heating frame, and a sintering rack is slidably connected between the two furnace guide rails via a slide, and a forming mold is provided inside the sintering rack. One end of the sintering rack is rotatably connected to a connecting arm via a rotating shaft, and one end of the connecting arm is rotatably connected to the furnace door, and traction devices are fixedly connected to the outer walls of both sides of the forming mold, and a slot is provided at the bottom of the traction device, and avoidance devices are provided on both sides of the front end of the sintering rack, and a limiting mechanism for positioning the forming mold is provided inside the sintering rack and at the rear end.

[0015] Based on the above scheme, the limiting mechanism includes at least three mounting plates, which are fixedly connected to the bottom inner wall of the sintering rack, and one side of the three mounting plates is fixedly connected with a stopper, and the stopper can contact the forming mold.

[0016] As a further scheme of the present invention, the traction assembly includes a support frame 1, which is fixedly connected to one side of the sintering furnace frame body, and one side of the support frame 1 is fixedly connected to two lifting guide rails, and a lifting platform is slidably connected between the two lifting guide rails via a slide, and one side of the lifting platform is fixedly connected to two front and rear translation rails, and a front and rear translation platform is slidably connected between the two front and rear translation rails via a slide, and one side of the front and rear translation platform is fixedly connected to a traction cylinder, one end of the traction cylinder piston rod is threadedly connected to two nuts, and a gap formed by the two nuts can be engaged with a slot provided in the traction device, and one side of the support frame 1 is provided with a lifting drive module for driving the lifting platform to move up and down along the lifting guide rail, and one side of the lifting platform is provided with a front and rear translation drive module for driving the front and rear translation platform to move forward and backward along the front and rear translation rails.

[0017] Furthermore, the loading and unloading assembly includes a support frame 2, which is fixedly connected to the top of the loading frame body, and the top of the support frame 2 is fixedly connected with two left and right translation guide rails, and the left and right translation platforms are slidably connected between the two left and right translation guide rails through a sliding platform, and guide rods are inserted at the four corners of the top of the left and right translation platforms, and a lifting plate is fixedly connected between the tops of the four guide rods, and the top of the lifting plate is fixedly connected with a plurality of support plates distributed at equal distances, the support plate is a top notch structure, and the top notch structure fits the forming mold, and an adsorption structure for fixing the forming mold is provided in the top notch, and the support plate is heat-conducting metal, and two groups of mounting holes are opened inside the lifting plate, and blowing fans are fixedly connected in the two groups of mounting holes, and a lifting cylinder is fixedly connected to the bottom inner wall of the left and right translation platforms, and one end of the lifting cylinder piston rod is fixed to the lifting plate, and a left and right translation drive module is provided inside the support frame 2 for driving the left and right translation platforms to translate left and right along the left and right translation guide rails.

[0018] On the basis of the above-mentioned solution, the adsorption structure is a permanent magnet block, and the permanent magnet block is fixedly connected in two symmetrically distributed embedded grooves opened in the notch at the top of the support plate.

[0019] As a further solution of the present invention, the lifting drive module, the front and rear translation drive module and the left and right translation drive module are all composed of a servo motor, two synchronous pulleys, a synchronous belt and a connector, one of the synchronous pulleys is connected to the output shaft of the servo motor, and the two synchronous pulleys rotate synchronously through the synchronous belt, and the synchronous belt is connected to the translation stage through the connector and moves the translation stage.

[0020] Furthermore, the vacuum pump assembly includes a vacuum pump, which is fixedly connected to one side of the sintering furnace frame. The vacuum pump is connected to the furnace body through a vacuum pumping pipe, and a second electromagnetic gate valve is provided in the vacuum pumping pipe.

[0021] On the basis of the above scheme, the ventilation component includes a ventilation pump body and a gas tank, which are connected by a connecting pipe. The ventilation pump body and the gas tank are fixedly connected to the top of the ventilation frame. The gas tank is connected to the furnace body through an outlet pipe. An electromagnetic gate valve three is provided in the outlet pipe. A cooling component for cooling and dissipating the inert gas is provided in the outlet pipe. The ventilation pump body is connected to the furnace body through an intake pipe. An electromagnetic gate valve one is provided in the intake pipe.

[0022] As a further scheme of the present invention, the cooling component includes a conical shell, the top and bottom of the conical shell are fixed to the air outlet pipe through the air inlet and air outlet holes respectively, the top of the conical shell faces the furnace body, and the interior of the conical shell is provided with a plurality of equally distributed mounting through holes, in which a heat-conducting copper tube is fixedly connected, and a closed cavity is formed between the conical shell and the plurality of heat-conducting copper tubes, a plurality of supporting columns are fixedly connected to the bottom inner wall of the conical shell, a diverter hood is fixedly connected between the top ends of the plurality of supporting columns, the surface of the diverter hood close to the air inlet is a conical surface and diverts the gas discharged from the air inlet, a plurality of converging hoods are fixedly connected to the bottom outer wall of the conical shell, the plurality of converging hoods wrap the ends of the heat-conducting copper tubes, and exhaust fans are fixedly connected to the plurality of converging hoods.

[0023] Beneficial Effects

[0024] Compared with the prior art, the present invention provides a high-efficiency metal injection molding vacuum degreasing sintering furnace, which has the following beneficial effects:

[0025] 1. The present invention provides a detachable forming assembly and a forming mold, thereby facilitating the replacement of the sintered metal, and the sintering position is constant, effectively ensuring the uniform quality of the same batch of metal sintered blanks.

[0026] 2. The present invention completes the loading and taking-and-placing operations of the molding mold through the loading and unloading components and the traction components, which not only has a high degree of automation, but also effectively avoids manual removal. However, the human skin has a low temperature resistance and is easy to cause damage to the workers' skin.

[0027] 3. The present invention completes the position switching of the forming mold from the middle part of the heating frame to the opening position at the end of the furnace body through the connecting arm, and through the traction device, it is convenient to quickly connect the traction assembly with the forming mold. At the same time, through the avoidance structure set on both sides of the front end of the sintering rack, the position switching of the forming mold from the sintering rack and the top notch of the support plate is effectively realized.

[0028] 4. The present invention fills the furnace body with inert gas through the ventilation assembly, which not only protects the metal parts, but also circulates the inert gas in the furnace body through the ventilation assembly, thereby achieving the cooling operation of the metal parts after sintering.

[0029] 5. The present invention effectively improves the air flow rate inside the heat-conducting copper tubes through the structure of the diverter hood and multiple heat-conducting copper tubes set in the cooling component, and further improves the heat dissipation efficiency of the inert gas inside the conical shell through the heat-conducting copper tubes. This method uses room temperature to cool the inert gas, which not only improves the cooling rate of the sintered metal to a certain extent, but also avoids using extreme cooling to cause irreversible damage to the metal blank. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the front side three-dimensional structure of a high-efficiency metal injection molding vacuum degreasing and sintering furnace proposed by the present invention;

[0031] Figure 2 This is a schematic diagram of the rear three-dimensional structure of a high-efficiency metal injection molding vacuum degreasing and sintering furnace proposed by the present invention;

[0032] Figure 3 It is a partial enlarged structural schematic diagram of a high-efficiency metal injection molding vacuum degreasing and sintering furnace proposed by the present invention;

[0033] Figure 4 A high-efficiency metal injection molding vacuum degreasing sintering furnace proposed by the present invention Figure 3 Schematic diagram of the internal structure;

[0034] Figure 5 This is a schematic diagram of the molding component structure of a high-efficiency metal injection molding vacuum degreasing sintering furnace proposed by the present invention;

[0035] Figure 6 This is a schematic diagram of the structure of a traction assembly of a high-efficiency metal injection molding vacuum degreasing and sintering furnace proposed by the present invention;

[0036] Figure 7 This is a schematic diagram of the engagement state of a nut and a tractor of a high-efficiency metal injection molding vacuum degreasing sintering furnace proposed by the present invention;

[0037] Figure 8 This is a schematic diagram of the structure of the loading and unloading components of a high-efficiency metal injection molding vacuum degreasing and sintering furnace proposed by the present invention;

[0038] Fig. 9 A high-efficiency metal injection molding vacuum degreasing sintering furnace proposed by the present invention Figure 8 A schematic diagram of a local enlarged structure;

[0039] Fig.10This is a schematic diagram of the structure of a ventilation assembly of a high-efficiency metal injection molding vacuum degreasing sintering furnace proposed by the present invention;

[0040] Fig.11 This is a schematic diagram of the cooling component structure of a high-efficiency metal injection molding vacuum degreasing sintering furnace proposed by the present invention;

[0041] Fig.12 A high-efficiency metal injection molding vacuum degreasing sintering furnace proposed by the present invention Fig.11 A schematic diagram of a partial cross-sectional structure;

[0042] Fig.13 A high-efficiency metal injection molding vacuum degreasing sintering furnace proposed by the present invention Fig.11 Schematic diagram of the local decomposition structure.

[0043] In the figure: 1. sintering furnace frame; 2. furnace body; 3. ventilation assembly; 4. ventilation frame; 5. loading and unloading assembly; 6. loading frame; 7. traction assembly; 8. furnace door; 9. molding assembly; 10. vacuum pump; 11. cooling assembly; 12. connecting arm; 13. molding mold; 14. guide rail in the furnace; 15. sintering frame; 16. heating frame; 17. traction device; 18. mounting plate; 19. stopper; 20. support frame 1; 21. lifting drive module; 22. lifting guide rail; 23. lifting platform; 24. front and rear translation drive module; 25. front and rear translation platform; 26. front and rear translation guide rail; 27. traction cylinder; 28. nut ; 29. ​​Card slot; 30. Left and right translation guide rails; 31. Support frame 2; 32. Left and right translation platform; 33. Left and right translation drive module; 34. Blowing fan; 35. Lifting plate; 36. Permanent magnet block; 37. Support plate; 38. Lifting cylinder; 39. Guide rod; 40. Ventilation pump body; 41. Gas tank; 42. Air intake pipe; 43. Solenoid gate valve 1; 44. Solenoid gate valve 2; 45. Vacuum pipe; 46. Solenoid gate valve 3; 47. Conical shell; 48. Confluence cover; 49. Exhaust fan; 50. Thermal copper tube; 51. Support column; 52. Diverter cover; 53. Air outlet; 54. Air intake; 55. Air outlet pipe. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0045] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in the present invention, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0046] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0047] Reference Figure 1-Figure 13A high-efficiency metal injection molding vacuum degreasing sintering furnace comprises a sintering furnace frame 1, a furnace body 2 is fixed inside the sintering furnace frame 1 by bolts, a furnace door 8 is hinged at the open end of the furnace body 2, an oil cylinder is arranged between the furnace door 8 and the sintering furnace frame 1 to enable the furnace door 8 to complete the opening and closing operation, a heating frame 16 is arranged inside the furnace body 2, a forming component 9 for sintering the metal powder and adhesive mixture injected into the mold cavity is arranged inside the heating frame 16, a vacuum component for extracting air from the furnace body 2 is arranged on one side of the sintering furnace frame 1, the vacuum component comprises a vacuum pump 10, the vacuum pump 10 is fixed to one side of the sintering furnace frame 1 by bolts, the vacuum pump 10 is connected to the furnace body 2 through a vacuum pipe 45, and an electromagnetic gate valve is arranged inside the vacuum pipe 45 24, by starting the vacuum pump 10, the vacuum pump 10 rotates to extract the air in the furnace body 2 through the vacuum pipe 45, a ventilation frame 4 is fixed to one side of the sintering furnace frame 1 by bolts, and a ventilation component 3 for injecting inert gas into the furnace body 2 is provided on the top of the ventilation frame 4, and a traction component 7 for quickly taking out the molding component 9 after sintering is completed is provided at one end of the sintering furnace frame 1 and located at a position relative to the open end of the furnace body 2, and a loading frame 6 is fixed to one side of the sintering furnace frame 1 and located below the traction component 7 by bolts, and a loading and unloading component 5 is provided on the top of the loading frame 6 for moving the mold in the molding component 9. When in use, a blank of a desired shape is formed by injecting metal into the mold, and then the mold is moved by the loading and unloading component 5. The mold is moved to the front of the furnace body 2, and then the mold after metal injection is pushed into the forming component 9 by the traction component 7, and then the traction component 7 and the loading and unloading component 5 are moved to reset, and then the furnace door 8 is closed by the hydraulic cylinder. When the furnace door 8 is closed, the forming component 9 is completely inserted into the furnace body 2. At this time, the furnace body 2 is in a closed state, and then the air inside the furnace body 2 is extracted by the vacuum component to reach a certain vacuum degree. The size of the vacuum degree can be determined according to the specific metal sintering process requirements and the blank material, and then the air inside the furnace body 2 is gradually increased by the heating frame 16 under the vacuum state. At this time, the binder will decompose and gasify at high temperature, and the generated gas will be discharged out of the furnace through the vacuum component until degreasing is completed, and then during the sintering Before sintering, the vacuum assembly is used again to ensure that the vacuum degree in the furnace meets the requirements, and to remove residual gas and impurities to avoid affecting the sintering process. Then, the temperature in the furnace is raised to the sintering temperature through the heating frame 16 according to the set heating rate, so that the metal powder particles diffuse and bond with each other to form a dense metal structure. After sintering, if natural cooling is waited for, the cooling speed is extremely slow. If the air-blowing or water-cooling method is used directly, if the cooling speed is too fast, stress will be generated and then cause cracking of the blank. In addition, the oxygen contained in the air is also easy to cause oxidation and other unstable factors in the sintered metal parts. Therefore, the ventilation assembly 3 is used to fill the furnace body 2 with inert gas, so that the inert gas protects the metal parts. At the same time,The inert gas in the furnace body 2 is extracted and filled in a cycle through the ventilation component 3, and the extracted inert gas will take away part of the heat of the sintered metal parts. The inert gas after the cycle increases the contact area with the air, so that the temperature of the filled inert gas is lower than the temperature of the sintered metal parts. This reciprocating cycle is carried out to achieve the cooling operation of the metal parts after sintering. After the sintered metal parts are cooled to the specified temperature, they need to be taken out. Although the sintered metal parts are cooled to a certain extent, they are directly taken out manually, and the human skin has a low temperature resistance, which is easy to cause damage to the workers' skin. Therefore, when the furnace door 8 is opened, the molding component 9 is also pulled out of the furnace body 2, so that the molding component 9 is moved from the inside of the furnace body 2 to the opening of the furnace body 2, and then the mold in the molding component 9 is pulled out by the traction component 7, and then the mold in the pulled molding component 9 is moved to the initial position through the cooperation of the loading and unloading component 5, and then the mold and the metal parts after sintering inside it are grabbed by the six-axis robot arm, so as to achieve rapid sintering of metal. ,

[0048] In order to achieve a uniform position of the forming mold 13 in the furnace each time, the forming assembly 9 in the present invention includes two furnace guide rails 14, the two furnace guide rails 14 are fixed to the bottom inner wall of the heating frame 16 by bolts, a sintering rack 15 is slidably connected between the two furnace guide rails 14 through a slide, a forming mold 13 is arranged inside the sintering rack 15, one end of the sintering rack 15 is rotatably connected to a connecting arm 12 through a rotating shaft, and one end of the connecting arm 12 is rotatably connected to the furnace door 8, tractors 17 are fixed to the outer walls of both sides of the forming mold 13 by bolts, a card slot 29 is provided at the bottom of the tractor 17, avoidance is provided on both sides of the front end of the sintering rack 15, a limiting mechanism for positioning the forming mold 13 is provided inside the sintering rack 15 and at the rear end, and the limiting mechanism includes at least three mounting plates 18, the three mounting plates 18 are fixed to the bottom inner wall of the sintering rack 15 by bolts, and one side of the three mounting plates 18 is screwed The bolt is fixed with a stopper 19, and the stopper 19 can contact the forming mold 13. When in use, since the connecting arm 12 connects the furnace door 8 and the sintering rack 15, the furnace door 8 is opened and closed while driving the sintering rack 15 to move forward and backward along the guide rail 14 in the furnace. When the furnace door 8 is closed, the sintering rack 15 is located in the middle part of the heating frame 16 through the connecting arm 12, so that the forming mold 13 is evenly heated. When the furnace door 8 is opened, the sintering rack 15 is located in the opening position at the end of the furnace body 2 through the connecting arm 12, so that the traction action of the forming mold 13 can be completed later by the traction assembly 7. In order to achieve rapid connection between the traction assembly 7 and the forming mold 13, it is necessary to set a tractor 17 on both sides of the forming mold 13. In order to ensure the installation position of the forming mold 13, at least three sets of mounting plates 18 and stoppers 19 are set at the rear end of the sintering rack 15, and the position of the forming mold 13 is positioned by the stopper 19.

[0049] In order to realize the rapid traction of the forming mold 13 and the switching of loading and unloading at different positions, the traction assembly 7 in the present invention includes a support frame 20, which is fixed to one side of the sintering furnace frame 1 by bolts, and one side of the support frame 20 is fixed with two lifting guide rails 22 by bolts, and a lifting platform 23 is slidably connected between the two lifting guide rails 22 through a slide, and one side of the lifting platform 23 is fixed with two front and rear translation guide rails 26 by bolts, and a front and rear translation platform 25 is slidably connected between the two front and rear translation guide rails 26 through a slide, and a traction cylinder 27 is fixed to one side of the front and rear translation platform 25 by bolts, and one end of the piston rod of the traction cylinder 27 is threadedly connected to two nuts 28, and the gap formed by the two nuts 28 can be with the tractor 1 7 is engaged with the card slot 29 opened on the support frame 1, a lifting driving module 21 is provided on one side of the support frame 1 20 for driving the lifting platform 23 to move up and down along the lifting guide rail 22, and a front and rear translation driving module 24 is provided on one side of the lifting platform 23 for driving the front and rear translation platform 25 to move forward and backward along the front and rear translation guide rail 26. The loading and unloading assembly 5 includes a support frame 21, and the support frame 21 is fixed to the top of the loading frame body 6 by bolts. The top of the support frame 21 is fixed with two left and right translation guide rails 30 by bolts, and the left and right translation platforms 32 are slidably connected between the two left and right translation guide rails 30 through a slide table. Guide rods 39 are inserted at the four corners of the top of the left and right translation platforms 32, and a lifting plate 35 is fixed between the tops of the four guide rods 39 by bolts. The top of the lifting plate 35 A plurality of support plates 37 distributed at equal distances are fixed by bolts on the top of the support frame 37. The support plate 37 is a top notch structure, and the top notch structure fits with the forming mold 13. An adsorption structure for fixing the forming mold 13 is arranged in the top notch. The support plate 37 is a heat-conducting metal. Two groups of mounting holes are provided inside the lifting plate 35. Blowing fans 34 are fixed in both groups of mounting holes by bolts. A lifting cylinder 38 is fixed to the bottom inner wall of the left and right translation platforms 32 by bolts, and one end of the piston rod of the lifting cylinder 38 is fixed to the lifting plate 35. A left and right translation driving module 33 for driving the left and right translation platforms 32 to translate left and right along the left and right translation guide rails 30 is arranged inside the support frame 2 31. When loading, the lifting cylinder 38 is first started to make the lifting cylinder 38 The left and right translation platforms 32 are moved rightwards along the left and right translation guide rails 30 to the top of the sintering rack 15 through the left and right translation driving modules 33, and then the front and rear translation platforms 25 are driven by the traction cylinders 27 to move inwards along the front and rear translation guide rails 26 through the front and rear translation driving modules 24 until the gap formed by the two nuts 28 at the ends of the traction cylinders 27 moves to the bottom of the slots 29 provided in the traction device 17, and then the lifting and lowering driving modules 21 are started to drive the lifting and lowering platforms 23 to move upwards along the lifting and lowering guide rails 22.Until the gap formed by the two nuts 28 at the end of the traction cylinder 27 is engaged with the slot 29 provided in the traction device 17, then the lifting cylinder 38 is shortened to drive the lifting plate 35 to move downward along the guide rod 39, and the support plate 37 is completely separated from the forming mold 13. At this time, one end of the forming mold 13 is hung on the end of the piston rod of the traction cylinder 27 through the traction device 17, and the other end of the forming mold 13 is hung on the bottom inner wall of the sintering rack 15 with a avoidance position, so that the sintering rack 15 is supported, and then the traction cylinder 27 is started to extend the traction cylinder 27 and push the forming mold 13 to move along the sintering rack 15 until it contacts the stopper 19, and then the lifting drive module 21 is started to make the lifting platform 23 drive the traction cylinder 27 to move downward along the guide rod 39, and the support plate 37 is completely separated from the forming mold 13. The cylinder 27 moves downward along the lifting guide rail 22, and the end nut 28 of the piston rod of the traction cylinder 27 is disengaged from the engaging state with the slot 29 of the traction device 17, and then the traction cylinder 27 is shortened and reset, and the front and rear translation drive module 24 drives the front and rear translation platform 25 and the traction cylinder 27 to move outward and reset along the front and rear translation guide rail 26, and forms a avoidance position for the furnace door 8, and then the furnace door 8 is closed by the oil cylinder. At this time, the sintering rack 15 drives the forming mold 13 to be pushed inward along the guide rail 14 in the furnace through the connecting arm 12, until the forming mold 13 is located in the middle position of the heating frame 16, the furnace door 8 is completely closed, and then the sintering operation is carried out. When the sintering is completed, when the forming mold 13 is unloaded, the furnace door 8 is first opened by the oil cylinder, and the furnace door 8 The connecting arm 12 is opened to make the sintering rack 15 drive the forming mold 13 to move outward along the guide rail 14 in the furnace until the furnace door 8 is opened 90 degrees, and then the front and rear translation driving module 24 drives the front and rear translation platform 25 and the traction cylinder 27 to move inward along the front and rear translation guide rail 26, and the traction cylinder 27 is extended, and the gap formed by the two nuts 28 at the end of the traction cylinder 27 is moved to the bottom of the slot 29 provided by the tractor 17, and then the lifting drive module 21 is started to make the lifting platform 23 drive the traction cylinder 27 to move upward along the lifting guide rail 22 until the gap formed by the two nuts 28 at the end of the traction cylinder 27 is engaged with the slot 29 provided by the tractor 17, and then the traction cylinder 27 is shortened and the traction cylinder 27 is tightened by the nuts 2 8 and the tractor 17 pull the forming mold 13 outward to the specified position, and then the left and right translation drive module 33 makes the left and right translation platform 32 move to the right along the left and right translation guide rails 30 to the appropriate position, and the support plate 37 is located directly below the forming mold 13, and then the lifting cylinder 38 is started to extend the lifting cylinder 38 and drive the lifting plate 35 and the top multiple support plates 37 to move upward so that the top notch of the support plate 37 is engaged with the forming mold 13, and then the lifting drive module 21 is started to make the lifting platform 23 drive the traction cylinder 27 to move downward along the lifting guide rail 22, and the end nut 28 of the piston rod of the traction cylinder 27 is disengaged from the engaging state with the card slot 29 of the tractor 17, and then the traction cylinder 27 is shortened and reset,The front and rear translation drive module 24 drives the front and rear translation platform 25 and the traction cylinder 27 to move outward and reset along the front and rear translation guide rails 26, and then the left and right translation drive module 33 makes the left and right translation platform 32 move leftward and reset to the initial position along the left and right translation guide rails 30. During the movement, the fan 34 is used to blow air to dissipate heat from the forming mold 13, thereby further improving the cooling effect of the forming mold 13. Then, the six-axis robot arm is used to grasp the forming mold 13 and the metal parts after sintering inside it, thereby realizing rapid sintering of metal. The lifting drive module 21, the front and rear translation drive module 24 and the left and right translation drive module 33 in the present invention are all composed of a servo motor, two synchronous pulleys, a synchronous belt and a connector, one of which is connected to the output shaft of the servo motor, and the two synchronous pulleys are synchronously rotated through the synchronous belt. The synchronous belt is connected to the translation platform through the connector and moves the translation platform.

[0050] In order to prevent the molding die 13 from being displaced during the movement process, the adsorption structure in the present invention is a permanent magnet block 36, and the permanent magnet block 36 is fixed by bolts in two symmetrically distributed grooves opened in the top groove of the support plate 37, so that the molding die 13 embedded in the top groove of the support plate 37 is magnetically fixed by the permanent magnet block 36, thereby effectively preventing the molding die 13 from being displaced during the movement process, which affects the normal operation of subsequent processes.

[0051] In order to solve the problem that after the metal sintered blank is sintered, it is necessary to avoid contact with oxygen in the air to react, the ventilation component 3 in the present invention includes a ventilation pump body 40 and a gas tank 41, the ventilation pump body 40 and the gas tank 41 are connected by a connecting pipe, the ventilation pump body 40 and the gas tank 41 are fixed to the top of the ventilation frame 4 by bolts, the gas tank 41 is connected to the furnace body 2 through an outlet pipe 55, an electromagnetic gate valve 3 46 is arranged in the outlet pipe 55, and a cooling component 11 for cooling and dissipating the inert gas is arranged in the outlet pipe 55, the ventilation pump body 40 is connected to the furnace body 2 through an inlet pipe 42, and an electromagnetic gate valve 1 43 is arranged in the inlet pipe 42. When in use, the electromagnetic gate valve 1 43 and the electromagnetic gate valve 3 46 are closed, so that the inlet pipe 42 and the outlet pipe 55 are both closed, so that the inside of the furnace body 2 is in a closed state, at this time, the vacuum pump 10 is started to complete the vacuum operation, and when the furnace body 2 is filled with inert gas, the inert gas is filled into the furnace body 2. When the inert gas is used, helium, neon, argon, etc. At this time, the electromagnetic gate valve 2 44 needs to be closed, and the electromagnetic gate valve 1 43 needs to be opened to allow the inert gas in the gas tank 41 to be filled into the furnace body 2. Since the temperature inside the furnace body 2 is relatively high, the electromagnetic gate valve 3 46 and the ventilation pump body 40 are opened to allow the inert gas inside the furnace body 2 and the inert gas in the gas tank 41 to form a circulating state, and the extracted inert gas will take away part of the heat of the sintered metal parts. The inert gas after circulation has an increased contact area with the air, so that the temperature of the filled inert gas is lower than the temperature of the sintered metal parts. This reciprocating cycle is repeated to achieve the cooling of the metal parts after sintering. At the same time, the cooling speed of the extracted inert gas can be further increased through the cooling component 11, and the use of extreme cooling methods such as water cooling and air conditioning can be avoided to avoid the situation where the cooling speed is too fast and stress is generated, thereby causing cracking of the blank.

[0052] In order to solve the problem that the cooling operation needs to avoid the use of extreme cooling and cooling, the cooling component 11 in the present invention includes a conical shell 47, the top and bottom of the conical shell 47 are fixed to the outlet pipe 55 through the air inlet hole 54 and the air outlet hole 53 respectively, the top of the conical shell 47 faces the furnace body 2, and the interior of the conical shell 47 is provided with a plurality of equally distributed mounting through holes, and a heat-conducting copper tube 50 is welded in the mounting through holes, and a closed cavity is formed between the conical shell 47 and the plurality of heat-conducting copper tubes 50, a plurality of support columns 51 are fixed to the bottom inner wall of the conical shell 47 by bolts, and a diverter cover 52 is fixed between the top ends of the plurality of support columns 51 by bolts, the surface of the diverter cover 52 close to the air inlet hole 54 is a conical surface and diverts the gas discharged from the air inlet hole 54, and a plurality of converging covers 48 are fixed to the bottom outer wall of the conical shell 47 by bolts, and the plurality of converging covers 48 The end of 50 is wrapped, and multiple converging covers 48 are each fixed with an exhaust fan 49 by bolts. When in use, the inert gas ejected through the air inlet 54 is diverted and diffused through the diverter cover 52, and the inert gas fills the conical shell 47, effectively increasing the heat dissipation area of ​​the inert gas. At the same time, by starting the exhaust fan 49, the exhaust fan 49 rotates and passes through the converging cover 48, so that the air at the end of the heat-conducting copper tube 50 away from the exhaust fan 49 passes through the inside of the heat-conducting copper tube 50 and flows out from the end close to the exhaust fan 49, and is discharged through the exhaust fan 49, thereby effectively improving the air flow rate inside the heat-conducting copper tube 50, thereby further improving the heat dissipation efficiency of the inert gas inside the conical shell 47 through the heat-conducting copper tube 50, and this method uses room temperature to cool the inert gas, which not only improves the cooling rate of the metal after sintering to a certain extent, but also avoids using extreme cooling to cool down, causing irreversible damage to the metal blank.

[0053] The present invention is divided into the following steps when used:

[0054] S1: When in use, firstly, metal is injected into the mold to form a blank of the desired shape, and then the lifting cylinder 38 is started to extend and drive the lifting plate 35 and the molding mold 13 supported by the top multiple support plates 37 to move upward, and make the bottom outer wall of the molding mold 13 higher than the bottom inner wall of the sintering rack 15. Then, the left and right translation drive module 33 is used to make the left and right translation platform 32 move rightward along the left and right translation guide rails 30 to just above the sintering rack 15. Then, the front and rear translation drive module 24 is used to make the front and rear translation platform 25 drive the traction cylinder 27 to move inward along the front and rear translation guide rails 26 until the gap formed by the two nuts 28 at the end of the traction cylinder 27 moves to just below the slot 29 provided in the tractor 17.

[0055] S2: Then, by starting the lifting drive module 21, the lifting platform 23 drives the traction cylinder 27 to move upward along the lifting guide rail 22 until the gap formed by the two nuts 28 at the end of the traction cylinder 27 is engaged with the slot 29 provided by the traction device 17, and then the lifting cylinder 38 is shortened to drive the lifting plate 35 to move downward along the guide rod 39, and the support plate 37 is completely separated from the forming mold 13. At this time, one end of the forming mold 13 is hung on the end of the piston rod of the traction cylinder 27 through the traction device 17, and the other end of the forming mold 13 is hung on the bottom inner wall of the sintering rack 15 with a avoidance, so that the sintering rack 15 is supported;

[0056] S3: Then, by starting the traction cylinder 27, the traction cylinder 27 is extended and pushes the forming mold 13 to move along the sintering rack 15 until it contacts the stopper 19, and then by starting the lifting drive module 21, the lifting platform 23 drives the traction cylinder 27 to move downward along the lifting guide rail 22, and the end nut 28 of the piston rod of the traction cylinder 27 is disengaged from the clamping groove 29 of the traction device 17, and then the traction cylinder 27 is shortened and reset, and the front and rear translation drive module 24 drives the front and rear translation platform 25 and the traction cylinder 27 to move outward and reset along the front and rear translation guide rail 26, and form a avoidance position for the furnace door 8, and then the furnace door 8 is closed by the oil cylinder, and at this time, the sintering rack 15 drives the forming mold 13 to push inward along the guide rail 14 in the furnace through the connecting arm 12, until the forming mold 13 is located in the middle position of the heating frame 16, the furnace door 8 is completely closed, and then the sintering operation is carried out;

[0057] S4: By closing the electromagnetic gate valve 1 43 and the electromagnetic gate valve 3 46, the air inlet pipe 42 and the air outlet pipe 55 are both closed, so that the interior of the furnace body 2 is in a closed state, and then the electromagnetic gate valve 2 44 is opened, and the air inside the furnace body 2 is extracted through the vacuum pumping component to reach a certain vacuum degree. The vacuum degree can be determined according to the specific metal sintering process requirements and the blank material, and then the air inside the furnace body 2 is gradually increased by the heating frame 16 under the vacuum state. At this time, the binder will decompose and gasify at high temperature, and the generated gas will be discharged out of the furnace through the vacuum pumping component until the degreasing is completed;

[0058] S5: before sintering, the vacuum assembly is again used to ensure that the vacuum degree in the furnace meets the requirements and to remove residual gas and impurities to avoid affecting the sintering process. Then, the temperature in the furnace is raised to the sintering temperature through the heating frame 16 at a set heating rate, so that the metal powder particles diffuse and bond with each other to form a dense metal structure, thereby completing the metal sintering;

[0059] S6: After the metal sintering is completed, when the furnace body 2 is filled with inert gas, the inert gas can be helium, neon, argon, etc., at this time, the electromagnetic gate valve 2 44 needs to be closed, and the electromagnetic gate valve 1 43 needs to be opened to allow the inert gas in the gas tank 41 to be filled into the furnace body 2. Since the temperature inside the furnace body 2 is relatively high, the electromagnetic gate valve 3 46 and the ventilation pump body 40 are opened to allow the inert gas inside the furnace body 2 and the inert gas in the gas tank 41 to form a circulating state, and the extracted inert gas will take away part of the heat of the sintered metal parts, and the inert gas after circulation has an increased contact area with the air, so that the temperature of the filled inert gas is lower than the temperature of the sintered metal parts, and this reciprocating cycle is repeated to achieve the cooling operation of the metal parts after sintering;

[0060] S7: At the same time, the inert gas ejected through the air inlet 54 is diverted and diffused through the diverter cover 52, and the inert gas fills the conical shell 47, effectively increasing the heat dissipation area of ​​the inert gas. At the same time, by starting the exhaust fan 49, the exhaust fan 49 rotates and passes through the converging cover 48, so that the air at the end of the heat-conducting copper tube 50 away from the exhaust fan 49 passes through the inside of the heat-conducting copper tube 50 and flows out from the end close to the exhaust fan 49, and is discharged through the exhaust fan 49, thereby effectively improving the air flow rate inside the heat-conducting copper tube 50, thereby further improving the heat dissipation efficiency of the inert gas inside the conical shell 47 through the heat-conducting copper tube 50, and this method uses room temperature to cool the inert gas, which not only improves the cooling rate of the metal after sintering to a certain extent, but also avoids using extreme cooling to cool down, which causes irreversible damage to the metal blank;

[0061] S8: When the sintered metal blank is cooled down, the forming mold 13 is unloaded. First, the furnace door 8 is opened by the oil cylinder. The furnace door 8 is opened, and the sintering rack 15 drives the forming mold 13 to be pulled outward along the guide rail 14 in the furnace through the connecting arm 12 until the furnace door 8 is opened 90 degrees. Then, the front and rear translation driving module 24 drives the front and rear translation platform 25 and the traction cylinder 27 to move inward along the front and rear translation guide rail 26, and the traction cylinder 27 is extended, and the gap formed by the two nuts 28 at the end of the traction cylinder 27 is moved to the bottom of the slot 29 provided by the tractor 17.

[0062] S9: Then, by starting the lifting drive module 21, the lifting platform 23 drives the traction cylinder 27 to move upward along the lifting guide rail 22 until the gap formed by the two nuts 28 at the end of the traction cylinder 27 is engaged with the slot 29 provided by the traction device 17, and then the traction cylinder 27 is shortened, and the forming mold 13 is pulled outward to the specified position through the nut 28 and the traction device 17, and then the left and right translation drive module 33 is used to make the left and right translation platform 32 move to the right along the left and right translation guide rails 30 to a suitable position, and the support plate 37 is located directly below the forming mold 13, and then, by starting the lifting cylinder 38, the lifting cylinder 38 is extended and drives the lifting plate 35 and the top multiple support plates 37 to move upward, so that the top notch of the support plate 37 is engaged with the forming mold 13;

[0063] S10: Then, by starting the lifting drive module 21, the lifting platform 23 drives the traction cylinder 27 to move downward along the lifting guide rail 22, and the end nut 28 of the piston rod of the traction cylinder 27 is disengaged from the engaging state with the slot 29 of the traction device 17, and then the traction cylinder 27 is shortened and reset, and the front and rear translation drive module 24 drives the front and rear translation platform 25 and the traction cylinder 27 to move outward and reset along the front and rear translation guide rail 26, and then the left and right translation drive module 33 is used to make the left and right translation platform 32 move to the left along the left and right translation guide rail 30 and reset to the initial position. During the movement, the blowing fan 34 is used to realize the heat dissipation of the forming mold 13, thereby further improving the cooling effect of the forming mold 13, and then the six-axis robot arm is used to grasp the forming mold 13 and the metal parts after sintering inside it, thereby realizing rapid sintering of metal.

[0064] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0065] The above-described embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A high-efficiency metal injection molding vacuum degreasing sintering furnace, comprising a sintering furnace frame (1), a furnace body (2) is fixedly connected to the interior of the sintering furnace frame (1), and a furnace door (8) is hinged at the open end of the furnace body (2), characterized in that: A heating frame (16) is provided inside the furnace body (2), and a molding assembly (9) for sintering a mixture of metal powder and adhesive injected into a mold cavity is provided inside the heating frame (16); a vacuum assembly for extracting air from the furnace body (2) is provided on one side of the sintering furnace frame (1); a ventilation frame (4) is fixedly connected to one side of the sintering furnace frame (1); a ventilation assembly (3) for injecting inert gas into the furnace body (2) is provided on the top of the ventilation frame (4); a traction assembly (7) for quickly removing the molding assembly (9) after sintering is completed is provided at one end of the sintering furnace frame (1) and at a position relative to the open end of the furnace body (2); a loading frame (6) is fixedly connected to one side of the sintering furnace frame (1) and below the traction assembly (7); a loading and unloading assembly (5) for moving the mold in the molding assembly (9) is provided on the top of the loading frame (6).

2. The high-efficiency metal injection molding vacuum degreasing sintering furnace according to claim 1, characterized in that: The molding assembly (9) comprises two furnace guide rails (14), the two furnace guide rails (14) are fixedly connected to the bottom inner wall of the heating frame (16), a sintering rack (15) is slidably connected between the two furnace guide rails (14) via a slide, a molding die (13) is arranged inside the sintering rack (15), one end of the sintering rack (15) is rotatably connected to a connecting arm (12) via a rotating shaft, and one end of the connecting arm (12) is rotatably connected to the furnace door (8), both sides of the outer wall of the molding die (13) are fixedly connected to a tractor (17), a slot (29) is provided at the bottom of the tractor (17), both sides of the front end of the sintering rack (15) are provided with avoidance, and a limiting mechanism for positioning the molding die (13) is arranged inside the sintering rack (15) and at the rear end.

3. The high-efficiency metal injection molding vacuum degreasing sintering furnace according to claim 2, characterized in that: The limiting mechanism comprises at least three mounting plates (18), the three mounting plates (18) are fixedly connected to the bottom inner wall of the sintering rack (15), one side of the three mounting plates (18) is fixedly connected with a stopper (19), and the stopper (19) can contact the forming mold (13).

4. The high-efficiency metal injection molding vacuum degreasing sintering furnace according to claim 2, characterized in that: The traction assembly (7) comprises a support frame (20), the support frame (20) being fixedly connected to one side of the sintering furnace frame (1), two lifting guide rails (22) being fixedly connected to one side of the support frame (20), a lifting platform (23) being slidably connected between the two lifting guide rails (22) via a slide, two front and rear translation guide rails (26) being fixedly connected to one side of the lifting platform (23), a front and rear translation platform (25) being slidably connected between the two front and rear translation guide rails (26), and one side of the front and rear translation platform (25) being fixedly connected to A traction cylinder (27) is connected, one end of the piston rod of the traction cylinder (27) is threadedly connected to two nuts (28), and the gap formed by the two nuts (28) can be engaged with a slot (29) provided on the tractor (17). A lifting drive module (21) for driving the lifting platform (23) to move up and down along the lifting guide rail (22) is provided on one side of the support frame (20), and a front-to-back translation drive module (24) for driving the front-to-back translation platform (25) to move forward and backward along the front-to-back translation guide rail (26) is provided on one side of the lifting platform (23).

5. The high-efficiency metal injection molding vacuum degreasing sintering furnace according to claim 4, characterized in that: The loading and unloading assembly (5) comprises a second support frame (31), the second support frame (31) is fixedly connected to the top of the loading frame (6), the top of the second support frame (31) is fixedly connected to two left and right translation guide rails (30), the left and right translation platforms (32) are slidably connected between the two left and right translation guide rails (30) through a slide, the top four corners of the left and right translation platforms (32) are all plugged with guide rods (39), the tops of the four guide rods (39) are fixedly connected with a lifting plate (35), the top of the lifting plate (35) is fixedly connected with a plurality of support plates (37) distributed at equal distances, the support plate (37) is a top notch structure, and the top groove The mouth structure matches the forming mold (13), the top notch is provided with an adsorption structure for fixing the forming mold (13), the support plate (37) is made of heat-conducting metal, two groups of mounting holes are opened inside the lifting plate (35), and the two groups of mounting holes are fixedly connected with a blowing fan (34), the bottom inner wall of the left and right translation platform (32) is fixedly connected with a lifting cylinder (38), and one end of the piston rod of the lifting cylinder (38) is fixed to the lifting plate (35), and the inside of the support frame 2 (31) is provided with a left and right translation driving module (33) for driving the left and right translation platform (32) to translate left and right along the left and right translation guide rails (30).

6. The high-efficiency metal injection molding vacuum degreasing sintering furnace according to claim 5, characterized in that: The adsorption structure is a permanent magnet block (36), and the permanent magnet block (36) is fixedly connected to two symmetrically distributed embedded grooves opened in the notch at the top of the support plate (37).

7. The high-efficiency metal injection molding vacuum degreasing sintering furnace according to claim 5, characterized in that: The lifting drive module (21), the front-rear translation drive module (24) and the left-right translation drive module (33) are all composed of a servo motor, two synchronous pulleys, a synchronous belt and a connector, wherein one synchronous pulley is connected to the output shaft of the servo motor, and the two synchronous pulleys rotate synchronously via the synchronous belt, and the synchronous belt is connected to the translation platform via the connector to move the translation platform.

8. The high-efficiency metal injection molding vacuum degreasing sintering furnace according to claim 1, characterized in that: The vacuum pump assembly comprises a vacuum pump (10), the vacuum pump (10) is fixedly connected to one side of the sintering furnace frame (1), the vacuum pump (10) is connected to the furnace body (2) through a vacuum pump pipe (45), and a second electromagnetic gate valve (44) is provided in the vacuum pump pipe (45).

9. The high-efficiency metal injection molding vacuum degreasing sintering furnace according to claim 8, characterized in that: The ventilation assembly (3) comprises a ventilation pump body (40) and a gas tank (41), the ventilation pump body (40) and the gas tank (41) are connected via a connecting pipe, the ventilation pump body (40) and the gas tank (41) are both fixedly connected to the top of the ventilation frame (4), the gas tank (41) is connected to the furnace body (2) via an outlet pipe (55), an electromagnetic gate valve three (46) is provided in the outlet pipe (55), a cooling assembly (11) for cooling and dissipating the inert gas is provided in the outlet pipe (55), the ventilation pump body (40) is connected to the furnace body (2) via an inlet pipe (42), and an electromagnetic gate valve one (43) is provided in the inlet pipe (42).

10. The high-efficiency metal injection molding vacuum degreasing sintering furnace according to claim 9, characterized in that: The cooling component (11) comprises a conical shell (47), the top and bottom of the conical shell (47) are fixed to an air outlet pipe (55) via an air inlet hole (54) and an air outlet hole (53) respectively, the top of the conical shell (47) faces the furnace body (2), a plurality of mounting through holes distributed at equal distances are formed inside the conical shell (47), a heat-conducting copper tube (50) is fixedly connected inside the mounting through holes, and a closed cavity is formed between the conical shell (47) and the plurality of heat-conducting copper tubes (50), and the conical shell (47) is provided with a plurality of heat-conducting copper tubes (50). 7) is fixedly connected to a plurality of support columns (51) on the bottom inner wall, a flow divider (52) is fixedly connected between the top ends of the plurality of support columns (51), the surface of the flow divider (52) close to the air inlet (54) is a conical surface and diverts the gas discharged from the air inlet (54), a plurality of flow collectors (48) are fixedly connected to the bottom outer wall of the conical shell (47), the plurality of flow collectors (48) wrap the ends of the heat-conducting copper tubes (50), and an exhaust fan (49) is fixedly connected inside the plurality of flow collectors (48).

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