Hot-pressing sintering furnace with locking mechanism

Abstract

The utility model discloses a hot pressing sintering furnace with a locking mechanism, which comprises a sintering furnace body, a furnace body sealing cover layer arranged at the top of the sintering furnace body, a top cover which is in butt joint with the top of the furnace body sealing cover layer and a locking frame which is welded and arranged at the top of the top cover, and four groups of connecting frames are welded and arranged on the periphery of the locking frame. Auxiliary frames are welded to the ends of the three sets of connecting frames, buckle frames are welded to the ends of the other set of connecting frames, and the auxiliary frames and the furnace body sealing cover layer are fixedly locked through overturning buckle frames. The top cover and the sintering furnace body are limited and fixed, and the stable locking effect on the top cover and the sintering furnace body is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of hot pressing sintering furnaces, specifically relating to a hot pressing sintering furnace with a locking mechanism. Background Technology

[0002] Hot pressing sintering refers to a sintering method in which dry powder is filled into a mold, and then heated while being pressed in a uniaxial direction, so that molding and sintering are completed simultaneously. Hot pressing equipment: Commonly used hot presses mainly consist of a heating furnace, a pressurizing device, a mold, and temperature and pressure measuring devices. The heating furnace uses electricity as a heat source, and the heating elements include SiC, MoSi, or nickel-chromium wire, platinum wire, molybdenum wire, etc. The pressurizing device requires a smooth speed, constant pressure, and flexible pressure adjustment; lever-type and hydraulic types are available. Depending on the material properties, the pressure atmosphere can be air, a reducing atmosphere, or an inert atmosphere. The mold requires high strength, high temperature resistance, oxidation resistance, and must not adhere to the hot-pressed material. The coefficient of thermal expansion of the mold should be the same as or similar to that of the hot-pressed material. Depending on the sintering characteristics of the product, thermoplastic alloy steel, graphite, silicon carbide, alumina, zirconium oxide, cermet, etc., can be selected. Graphite molds are the most widely used.

[0003] Domestic utility model patent application number 202122977175.6 discloses an automatic furnace door locking mechanism and an atmosphere hot pressing sintering furnace. It includes a furnace door flange on the furnace door, a furnace body flange on the furnace body, a retaining ring slidably connected to the furnace body flange, a driving component for vertically moving the retaining ring, and at least one set of fasteners disposed between the retaining ring and the furnace door flange. The fasteners are located on the side of the furnace door flange away from the furnace body flange. The fasteners include a first fastening block on the furnace door flange and a second fastening block on the retaining ring. The end of the first fastening block away from the furnace door flange has a first fastening inclined surface, and the end of the second fastening block facing the first fastening block has a second fastening inclined surface. The retaining ring can move under the action of the driving component to a state where the first fastening inclined surface and the second fastening inclined surface are pressed together or separated. This application has the effect of conveniently locking the furnace door. The above-mentioned utility model is a furnace door locking structure. However, the hot pressing sintering furnace has high internal heat during the processing, which causes thermal expansion and contraction of gas pressure. Therefore, it exerts a certain pressure on the furnace door or furnace cover, which can easily cause the furnace door or furnace cover to burst open. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides a hot-press sintering furnace with a locking mechanism, comprising a furnace body, a furnace body cover layer installed on top of the furnace body, a top cover installed abutting the top of the furnace body cover layer, and a locking frame welded to the top of the top cover. Four sets of connecting frames are welded around the locking frame, with auxiliary frames welded to the ends of three sets of connecting frames, and a snap-fit ​​frame welded to the end of the other set of connecting frames. The auxiliary frames are fixedly locked to the furnace body cover layer by a flip-up snap-fit ​​frame.

[0005] Align the buckle frame with the top cover and the furnace body sealing layer, align the top cover and the top of the furnace body sealing layer, and fix and lock the auxiliary frame at the end of the connecting frame by flipping the buckle frame.

[0006] As a further preferred technical solution of this utility model, a barometer and a pressure relief valve are fixedly installed on the locking frame, and the bottom of the barometer and the pressure relief valve are both arranged through the top cover and the locking frame.

[0007] The internal air pressure of the sintering furnace is monitored by a barometer connected to the electrical control system. When the gas pressure inside the furnace becomes excessive due to thermal expansion, the electrical control system activates a pressure relief valve to release pressure. Immediately after the gas expands to a certain extent, the pressure inside the container is released, creating a negative pressure within the sealed environment. This negative pressure causes the lid to adhere more tightly to the container. Similarly, releasing pressure inside the sintering furnace increases the locking force between the top cover and the furnace sealing layer.

[0008] As a further preferred technical solution of this utility model; the buckle frame is provided with a limiting port, and the limiting port is used to limit the top cover and the furnace body sealing layer. The furnace body sealing layer and the top cover are both provided with limiting holes at the limiting port position. The top and bottom of the buckle frame are provided with auxiliary holes at the same position as the limiting holes. The buckle frame, the top cover and the furnace body sealing layer are connected by limiting bolts passing through the limiting holes and the auxiliary holes for limiting installation.

[0009] The top cover and furnace body sealing layer are fixed by using limit bolts that pass through the limit holes and auxiliary holes.

[0010] As a further preferred technical solution of this utility model, a clamping part is fixedly installed at the end of the buckle frame, and the clamping part is fitted to the bottom of the furnace body cover layer.

[0011] By pressing the bottom of the furnace cover layer with the end of the clamping part, the fixing effect between the top cover and the sintering furnace body at the position of the buckle frame is increased.

[0012] As a further preferred technical solution of this utility model; a welding plate is welded and installed on the auxiliary frame, and two sets of slots are opened on one side of the welding plate, and a through hole is opened on the auxiliary frame. A flipping part is fixedly installed on the flipping buckle, and a flipping plate is flipped and installed through the flipping part. Both the flipping plate and the flipping buckle are provided with snap-fit ​​holes. An end plate is fixedly installed at the end of the flipping plate, and two sets of snap-fit ​​blocks that cooperate with the slots are fixedly installed at the bottom of the end plate. The auxiliary frame and the flipping buckle are limited and installed by a limiting rod passing through the through hole and the snap-fit ​​hole.

[0013] By flipping the flip plate, the two sets of snap-fit ​​blocks at the end of the end plate are snapped into the slots at the bottom of the welding plate. Then, the flip buckle is flipped so that the snap-fit ​​hole is flipped to the bottom position of the through hole. Finally, the limiting rod is set through the through hole and the snap-fit ​​hole to limit and fix the top cover and the sintering furnace body, which increases the stability of locking the top cover and the sintering furnace body.

[0014] As a further preferred technical solution of this utility model, four sets of base frames are installed at the bottom of the sintering furnace body, and the furnace body cover layer and the top cover are connected by four sets of fixing bolts.

[0015] The furnace body cover and the top cover are connected by four sets of fixing bolts to ensure the installation of the foundation between the top cover and the sintering furnace body. Beneficial effects

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] 1. The internal air pressure of the sintering furnace is monitored using a barometer connected to the electrical control system. When the internal gas pressure becomes excessive due to thermal expansion, the electrical control system activates a pressure relief valve to release pressure within the furnace. Immediately after the gas expands to a certain extent, the pressure inside the container is released, creating a negative pressure within the sealed environment. This negative pressure causes the lid to adhere more tightly to the container. Similarly, releasing pressure inside the sintering furnace increases the locking force between the top cover and the furnace sealing layer.

[0018] 2. By flipping the flip plate, the two sets of snap-fit ​​blocks at the end of the end plate are snapped into the slots at the bottom of the welding plate. Then, the flip buckle is flipped so that the snap-fit ​​hole is flipped to the bottom position of the through hole. Finally, the limiting rod is set through the through hole and the snap-fit ​​hole to limit and fix the top cover and the sintering furnace body, which increases the stability of locking the top cover and the sintering furnace body. Attached Figure Description

[0019] Figure 1 This is a front view structural diagram of the present utility model;

[0020] Figure 2 This is a bottom view of the structure of this utility model;

[0021] Figure 3 This is an enlarged structural schematic diagram of the present invention;

[0022] Figure 4 This is a schematic diagram of the installation structure of the flip-up buckle frame of this utility model;

[0023] Figure 5 for Figure 2 A magnified structural diagram of point A in the middle.

[0024] In the diagram: 1. Sintering furnace body; 11. Base frame; 12. Furnace body sealing layer; 13. Limiting hole; 2. Top cover; 21. Fixing bolt; 22. Limiting bolt; 3. Locking frame; 31. Connecting frame; 32. Pressure gauge; 33. Pressure relief valve; 34. Buckling frame; 341. Auxiliary hole; 35. Anchoring part; 36. Auxiliary frame; 361. Through hole; 362. Welding plate; 363. Slot; 37. Limiting port; 4. Flip buckle frame; 41. Flipping part; 42. Flipping plate; 43. End plate; 44. Snap-fit ​​block; 45. Limiting rod; 46. Snap-fit ​​hole. Detailed Implementation

[0025] This specific embodiment is a hot-press sintering furnace with a locking mechanism.

[0026] The above-mentioned utility model is a furnace door locking structure. However, the hot pressing sintering furnace has high internal heat during the processing, which causes thermal expansion and contraction of gas pressure. Therefore, it exerts a certain pressure on the furnace door or furnace cover, which can easily cause the furnace door or furnace cover to burst open.

[0027] Its structural diagram is as follows Figures 1-2 As shown. A hot-press sintering furnace with a locking mechanism includes a furnace body 1, a furnace body cover layer 12 installed on top of the furnace body 1, a top cover 2 installed and connected to the top of the furnace body cover layer 12, and a locking frame 3 welded to the top of the top cover 2. Four sets of base frames 11 are installed at the bottom of the furnace body 1, and the furnace body cover layer 12 and the top cover 2 are connected and connected by four sets of fixing bolts 21. The connection of the furnace body cover layer 12 and the top cover 2 by the four sets of fixing bolts 21 ensures the basic installation method between the top cover 2 and the furnace body 1.

[0028] Its structural diagram is as follows Figures 3-5As shown. Four sets of connecting frames 31 are welded and installed around the locking frame 3. Three sets of connecting frames 31 have auxiliary frames 36 welded to their ends, and the other set of connecting frames 31 has a snap-fit ​​frame 34 welded to its end. The auxiliary frames 36 are fixedly locked to the furnace body cover layer 12 by a flip-up snap-fit ​​frame 4. A pressure gauge 32 and a pressure relief valve 33 are fixedly installed on the locking frame 3, and both the pressure gauge 32 and the pressure relief valve 33 penetrate the top cover 2 and the locking frame 3 at their bottoms. The pressure gauge 32 detects the internal air pressure of the sintering furnace body 1 and is connected to the electrical control system. When the gas inside the sintering furnace body 1 expands due to heat, causing excessive pressure, the electrical control system controls the pressure relief valve 33 to release pressure inside the sintering furnace body 1. After the gas expands to a certain extent, immediately releasing pressure inside the container creates a negative pressure inside the sealed environment, causing the cover and container to adhere more tightly under the negative pressure. Similarly, after depressurizing the interior of the sintering furnace body 1, the locking force between the top cover 2 and the furnace body sealing layer 12 will increase.

[0029] The snap-fit ​​bracket 34 is provided with a limiting port 37, which is used to limit the connection between the top cover 2 and the furnace body sealing layer 12. Limiting holes 13 are provided on both the furnace body sealing layer 12 and the top cover 2 at the limiting port 37. Auxiliary holes 341 are provided at the top and bottom of the snap-fit ​​bracket 34 at the same positions as the limiting holes 13. The snap-fit ​​bracket 34, the top cover 2, and the furnace body sealing layer 12 are connected and fixed by limiting bolts 22 passing through the limiting holes 13 and auxiliary holes 341. The top cover 2 and the furnace body sealing layer 12 are fixedly installed by the limiting bolts 22 passing through the limiting holes 13 and auxiliary holes 341. A clamping part 35 is fixedly installed at the end of the snap-fit ​​bracket 34, and the clamping part 35 is fitted against the bottom of the furnace body sealing layer 12. The bottom of the furnace body cover layer 12 is pressed by the end of the clamping part 35, which increases the fixing effect between the top cover 2 and the sintering furnace body 1 at the position of the buckle bracket 34.

[0030] A welding plate 362 is welded and installed on the auxiliary frame 36, and two sets of slots 363 are opened on one side of the welding plate 362. A through hole 361 is opened on the auxiliary frame 36. A flipping part 41 is fixedly installed on the flipping buckle 4, and a flipping plate 42 is flipped and installed through the flipping part 41. Both the flipping plate 42 and the flipping buckle 4 are provided with snap-fit ​​holes 46. An end plate 43 is fixedly installed at the end of the flipping plate 42, and two sets of snap-fit ​​blocks 44 are fixedly installed at the bottom of the end plate 43 for snap-fit ​​fixing with the matching slots 363. The auxiliary frame 36 and the flipping buckle 4 are limited and installed by a limiting rod 45 passing through the through hole 361 and the snap-fit ​​hole 46. By flipping the flip plate 42, the two sets of snap-fit ​​blocks 44 at the end of the end plate 43 are snapped into the slots 363 at the bottom of the welding plate 362. Then, the flip buckle 4 is flipped so that the snap-fit ​​hole 46 is flipped to the bottom position of the through hole 361. Then, the limiting rod 45 is set through the through hole 361 and the snap-fit ​​hole 46 to limit and fix the top cover 2 and the sintering furnace body 1, which increases the stability of locking the top cover 2 and the sintering furnace body 1.

[0031] First, align the upper limit port 37 of the buckle bracket 34 with the top cover 2 and the furnace body sealing layer 12, and install the top cover 2 and the furnace body sealing layer 12 together using four sets of fixing bolts 21. Then, use the limiting bolts 22 to pass through the limiting hole 13 and the auxiliary hole 341 to position and install the buckle bracket 34, top cover 2 and furnace body sealing layer 12. Next, use the flipping plate 42 to snap the two sets of snap-fit ​​blocks 44 at the end of the end plate 43 into the slots 363 at the bottom of the welding plate 362. Then, flip the buckle bracket 4 so that the snap-fit ​​hole 46 is flipped to the bottom position of the through hole 361. Finally, the limiting rod 45 passes through the through hole 361 and the snap-fit ​​hole 46 to limit and fix the top cover 2 and the sintering furnace body 1, increasing the stability of locking the top cover 2 and the sintering furnace body 1.

[0032] All technical features in this embodiment can be freely combined according to actual needs.

[0033] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A hot-pressing sintering furnace with a locking mechanism, characterized in that, The furnace includes a sintering furnace body (1), a furnace body cover layer (12) installed on the top of the sintering furnace body (1), a top cover (2) installed on the top of the furnace body cover layer (12), and a locking frame (3) welded to the top of the top cover (2). Four sets of connecting frames (31) are welded around the locking frame (3), and auxiliary frames (36) are welded to the ends of three sets of connecting frames (31). A buckle frame (34) is welded to the end of another set of connecting frames (31). The auxiliary frame (36) is fixed and locked to the furnace body cover layer (12) by a flip buckle frame (4).

2. A hot pressing sintering furnace with a locking mechanism according to claim 1, characterized in that: A barometer (32) and a pressure relief valve (33) are fixedly installed on the locking frame (3), and the bottom of the barometer (32) and the pressure relief valve (33) are both installed through the top cover (2) and the locking frame (3).

3. A hot pressing sintering furnace with a locking mechanism according to claim 2, characterized in that: The buckle frame (34) is provided with a limiting port (37), and the limiting port (37) is used to limit the top cover (2) and the furnace body sealing layer (12). The furnace body sealing layer (12) and the top cover (2) are both provided with limiting holes (13) at the position of the limiting port (37). The top and bottom of the buckle frame (34) are provided with auxiliary holes (341) at the same position as the limiting holes (13). The buckle frame (34), the top cover (2) and the furnace body sealing layer (12) are connected by limiting bolts (22) that pass through the limiting holes (13) and the auxiliary holes (341) for limiting installation.

4. A hot pressing sintering furnace with a locking mechanism according to claim 3, characterized in that: The buckle bracket (34) has a clamping part (35) fixedly installed at its end, and the clamping part (35) is fitted to the bottom of the furnace body cover layer (12).

5. A hot pressing sintering furnace with a locking mechanism according to claim 4, characterized in that: A welding plate (362) is welded and installed on the auxiliary frame (36), and two sets of slots (363) are opened on one side of the welding plate (362). A through hole (361) is opened on the auxiliary frame (36). A flipping part (41) is fixedly installed on the flipping buckle (4), and a flipping plate (42) is flipped and installed through the flipping part (41). Both the flipping plate (42) and the flipping buckle (4) are provided with snap-fit ​​holes (46). An end plate (43) is fixedly installed at the end of the flipping plate (42), and two sets of snap-fit ​​blocks (44) are fixedly installed at the bottom of the end plate (43) to engage with the slots (363). The auxiliary frame (36) and the flipping buckle (4) are limited and installed by a limiting rod (45) passing through the through hole (361) and the snap-fit ​​hole (46).

6. A hot pressing sintering furnace with a locking mechanism according to claim 5, characterized in that: The bottom of the sintering furnace body (1) is equipped with four sets of base frames (11), and the furnace body cover layer (12) and the top cover (2) are connected by four sets of fixing bolts (21).

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