A sintering device for cemented carbide

Abstract

The utility model discloses a hard alloy sintering device relates to alloy sintering technical field, including sintering furnace, sintering furnace adopts double -deck structure, and sintering furnace lower extreme is equipped with support seat, and sintering furnace lateral wall is equipped with heat insulating cavity, and sintering furnace inner wall is equipped with heating pipe, and sintering furnace one end is equipped with the hatch, and the hatch is equipped with the automatic opening and closing subassembly, and sintering furnace upper end is equipped with the exhaust bin, and sintering furnace is slidably arranged with the crucible, and the hatch lower extreme is equipped with the hatch locking subassembly, and the linkage subassembly is equipped between the crucible and the hatch, the utility model discloses the linkage subassembly is arranged between the crucible and the hatch, makes the hatch open instantaneous automatic with the crucible synchronism to the outside pull out, reaches the material taking of not needing manual exploration high temperature furnace chamber can be completed, thoroughly avoids the risk of worker burn, realizes safe, efficient discharge's effect.

Description

Technical Field

[0001] This utility model relates to the field of alloy sintering technology, specifically a cemented carbide sintering apparatus. Background Technology

[0002] The alloy is sintered in a sintering furnace. Conventional sintering furnace lids are secured to the front of the furnace body with multiple locking points or bolts to increase the lid's compressive strength. Because conventional lids are secured to the furnace body with multiple locking points, multiple locking points or bolts need to be operated when opening or closing, which makes the operation of conventional sintering furnace lids quite troublesome.

[0003] To address the aforementioned issues, patent CN221630381U discloses a cemented carbide sintering device. This device uses a motor to drive a screw, causing a linkage sleeve to move along the support rod direction on the top wall of the support rod. The linkage sleeve then pushes a connecting rod and a linkage frame to move, which in turn pushes the heat insulation cover to close and open. This achieves automatic and safe door opening and closing, solving the problem in existing technologies where manual application of force in the rotational direction is required when the device closes, increasing the workload for personnel.

[0004] However, the aforementioned device still has certain problems in use. On the one hand, the device relies solely on the screw and linkage sleeve to open and close the hatch, lacking a locking component, which cannot guarantee the sealing of the hatch and the sintering furnace during operation, affecting sintering efficiency and quality. On the other hand, after sintering, workers still need to remove the alloy from the sintering furnace. The residual temperature inside the furnace is very high after sintering, and manual removal of materials can easily lead to burns, posing a significant safety hazard.

[0005] Based on this, a cemented carbide sintering apparatus is now provided, which can eliminate the drawbacks of existing apparatuses. Summary of the Invention

[0006] The purpose of this invention is to provide a cemented carbide sintering apparatus to solve the problems in the prior art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: A cemented carbide sintering apparatus includes a sintering furnace with a double-layer structure. The lower end of the sintering furnace is provided with a support base, the side wall of the sintering furnace is provided with a heat insulation cavity, the inner wall of the sintering furnace is provided with a heating tube, one end of the sintering furnace is provided with a hatch, the hatch is provided with an automatic opening and closing component, the upper end of the sintering furnace is provided with an exhaust chamber, a crucible is slidably arranged inside the sintering furnace, the lower end of the hatch is provided with a hatch locking component, and a linkage component is provided between the crucible and the hatch.

[0008] Based on the above technical solutions, this utility model also provides the following optional technical solutions: In one alternative: a fixing frame is provided on one side of the hatch, the upper end of the fixing frame is rotatably mounted on the exhaust chamber, the lower end of the fixing frame is connected to the automatic opening and closing assembly, and a high-temperature resistant sealing ring is provided on the side of the hatch near the sintering furnace.

[0009] In one alternative: the automatic opening and closing assembly includes a movable seat slidably mounted on a support base, with connecting rods rotatably connected to both ends of the movable seat, the other end of the connecting rods being rotatably connected to the lower end of a fixed frame, a driving component on the movable seat, and a telescopic protective cover between the movable seat and the support base.

[0010] In one alternative: the drive element includes a screw rotatably mounted on a support base, the screw being threadedly connected to a movable seat, and the screw being driven by a motor.

[0011] In one alternative embodiment: the door locking assembly includes an arc-shaped plate hinged to one end of a support base, a locking roller at one end of the arc-shaped plate, a connecting groove on the arc-shaped plate, a cylinder on one side of the arc-shaped plate, a push rod at the output end of the cylinder, and one end of the push rod being rotatably mounted in the connecting groove.

[0012] In one alternative: a vent is provided between the exhaust chamber and the insulation chamber, an air pump is provided on the exhaust chamber, the input end of the air pump is connected to the inside of the exhaust chamber through a connecting pipe, and a one-way valve is provided at the output end of the air pump.

[0013] In one alternative: the crucible is slidably mounted on two support rods, and the two support rods are symmetrically fixed inside the sintering furnace.

[0014] In one alternative: the linkage assembly includes a linkage rod hinged to one end of the crucible, and the other end of the linkage rod hinged to an extension rod fixed to the hatch.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model adds a cylinder-driven arc-shaped plate locking assembly below the hatch, so that the locking roller automatically presses the edge of the hatch after the hatch is closed, forming a double seal with the high-temperature resistant sealing ring, thus ensuring the airtightness of the hatch.

[0016] 2. This utility model, by setting a linkage component between the crucible and the hatch, automatically pulls the crucible outward synchronously the moment the hatch is opened, achieving the effect of material removal without manual probing into the high-temperature furnace cavity, completely avoiding the risk of worker burns, and achieving safe and efficient material discharge. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 This is a schematic diagram of the linkage component in this utility model.

[0019] Figure 3 This is a structural schematic diagram of the cabin door locking assembly of this utility model.

[0020] Figure reference numerals: 100, sintering furnace; 101, support base; 102, heat insulation cavity; 103, vent hole; 104, heating tube; 200, hatch; 201, fixing frame; 202, high-temperature resistant sealing ring; 300, automatic opening and closing assembly; 301, movable seat; 302, connecting rod; 303, screw; 304, motor; 305, telescopic protective cover; 400, hatch locking assembly; 401, arc plate; 402, locking roller; 403, connecting groove; 404, cylinder; 405, push rod; 500, exhaust chamber; 501, air pump; 502, connecting pipe; 600, crucible; 601, support rod; 700, linkage assembly; 701, linkage rod; 702, extension rod. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0022] In one embodiment, such as Figure 1 and Figure 2 As shown, a cemented carbide sintering apparatus includes a sintering furnace 100, which has a double-layer structure. A support base 101 is provided at the lower end of the sintering furnace 100. A heat insulation cavity 102 is provided on the side wall of the sintering furnace 100. A heating tube 104 is provided on the inner wall of the sintering furnace 100. A hatch 200 is provided at one end of the sintering furnace 100, and an automatic opening and closing assembly 300 is provided on the hatch 200. An exhaust chamber 500 is provided at the upper end of the sintering furnace 100. A crucible 600 is slidably disposed inside the sintering furnace 100. A hatch locking assembly is provided at the lower end of the hatch 200. The component 400, crucible 600 and hatch 200 are connected by a linkage component 700. In use, the alloy raw material is placed in the crucible 600, and then the hatch 200 is closed by the automatic opening and closing component 300. At the same time, the linkage component 700 drives the crucible 600 to slide into the sintering furnace 100. Then, the hatch 200 is locked by the hatch locking component 400, and the exhaust chamber 500 is activated to evacuate the heat insulation chamber 102 to a near-vacuum state. Then, the heating tube 104 is activated to sinter the alloy raw material in the crucible 600.

[0023] In one embodiment, such as Figure 2As shown, a fixed frame 201 is provided on one side of the hatch 200. The upper end of the fixed frame 201 is rotatably mounted on the exhaust chamber 500, and the lower end of the fixed frame 201 is connected to the automatic opening and closing assembly 300. A high-temperature resistant sealing ring 202 is provided on the side of the hatch 200 near the sintering furnace 100. The automatic opening and closing assembly 300 includes a movable seat 301 slidably mounted on the support base 101. Connecting rods 302 are rotatably connected to both ends of the movable seat 301. The other end of the connecting rods 302 is rotatably connected to the lower end of the fixed frame 201. A driving component is provided on the movable seat 301. A telescopic protective cover 305 is provided between the movable seat 301 and the support base 101. The driving component includes a screw 303 rotatably mounted on the support base 101. The screw 303 is connected to the movable seat 301. The screw 303 is driven by the motor 304, and the crucible 600 is slidably mounted on two support rods 601. The two support rods 601 are symmetrically fixed inside the sintering furnace 100. The linkage assembly 700 includes a linkage rod 701 hinged to one end of the crucible 600, and the other end of the linkage rod 701 hinged to an extension rod 702 fixed on the hatch 200. In use, the screw 303 is driven to rotate by the motor 304, causing the movable seat 301 to slide laterally. At the same time, the hatch 200 is driven to open and close through the transmission action between the connecting rod 302 and the fixed frame 201. The crucible 600 is also driven to slide along the support rods 601 through the transmission action of the linkage rod 701, thereby realizing the feeding and discharging of the crucible 600.

[0024] In one embodiment, such as Figure 3 As shown, the hatch locking assembly 400 includes an arc-shaped plate 401 hinged to one end of the support base 101. A locking roller 402 is provided at one end of the arc-shaped plate 401. A connecting groove 403 is provided on the arc-shaped plate 401. A cylinder 404 is provided on one side of the arc-shaped plate 401. A push rod 405 is provided at the output end of the cylinder 404. One end of the push rod 405 is rotatably installed in the connecting groove 403. In use, when the hatch 200 is closed, the cylinder 404 drives the push rod 405 to rotate the arc-shaped plate 401 toward the hatch 200, so that the locking roller 402 presses the hatch 200.

[0025] In one embodiment, such as Figure 2 As shown, a vent 103 is provided between the exhaust chamber 500 and the heat insulation chamber 102. An air pump 501 is provided on the exhaust chamber 500. The input end of the air pump 501 is connected to the inside of the exhaust chamber 500 through a connecting pipe 502. The output end of the air pump 501 is provided with a one-way valve. When in use, the air pump 501 is used to exhaust the air in the heat insulation chamber 102, so that the heat insulation chamber 102 reaches a near-vacuum state, reducing the heat leakage from the sintering furnace 100.

[0026] The above embodiments disclose a cemented carbide sintering apparatus. In use, the alloy raw material is placed in the crucible 600, and then the automatic opening and closing component 300 controls the door 200 to close. At the same time, the linkage component 700 drives the crucible 600 to slide into the sintering furnace 100. After the door 200 is closed, the cylinder 404 drives the push rod 405 to rotate the arc plate 401 towards the door 200, so that the locking roller 402 presses the door 200. Then, the exhaust chamber 500 is activated to evacuate the heat insulation chamber 102 to a near-vacuum state. Then, the heating tube 104 is activated to sinter the alloy raw material in the crucible 600.

[0027] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A cemented carbide sintering apparatus, comprising a sintering furnace (100), the sintering furnace (100) having a double-layer structure, a support base (101) at the lower end of the sintering furnace (100), a heat insulation cavity (102) on the side wall of the sintering furnace (100), a heating tube (104) on the inner wall of the sintering furnace (100), a hatch (200) at one end of the sintering furnace (100), an automatic opening and closing assembly (300) on the hatch (200), an exhaust chamber (500) at the upper end of the sintering furnace (100), and a crucible (600) slidably disposed inside the sintering furnace (100), characterized in that, The lower end of the hatch (200) is provided with a hatch locking assembly (400), and a linkage assembly (700) is provided between the crucible (600) and the hatch (200).

2. The cemented carbide sintering apparatus according to claim 1, characterized in that, A fixing frame (201) is provided on one side of the hatch (200). The upper end of the fixing frame (201) is rotatably mounted on the exhaust chamber (500). The lower end of the fixing frame (201) is connected to the automatic opening and closing assembly (300). A high-temperature resistant sealing ring (202) is provided on the side of the hatch (200) near the sintering furnace (100).

3. The cemented carbide sintering apparatus according to claim 1, characterized in that, The automatic opening and closing assembly (300) includes a movable seat (301) slidably mounted on a support base (101). Connecting rods (302) are rotatably connected to both ends of the movable seat (301). The other end of the connecting rods (302) is rotatably connected to the lower end of the fixed frame (201). A driving component is provided on the movable seat (301). A telescopic protective cover (305) is provided between the movable seat (301) and the support base (101).

4. The cemented carbide sintering apparatus according to claim 3, characterized in that, The driving component includes a screw (303) rotatably mounted on a support (101), the screw (303) being threadedly connected to a movable seat (301), and the screw (303) being driven by a motor (304).

5. The cemented carbide sintering apparatus according to claim 1, characterized in that, The door locking assembly (400) includes an arc-shaped plate (401) hinged to one end of a support base (101), a locking roller (402) at one end of the arc-shaped plate (401), a connecting groove (403) on the arc-shaped plate (401), a cylinder (404) on one side of the arc-shaped plate (401), a push rod (405) at the output end of the cylinder (404), and one end of the push rod (405) being rotatably installed in the connecting groove (403).

6. The cemented carbide sintering apparatus according to claim 1, characterized in that, A vent (103) is provided between the exhaust chamber (500) and the heat insulation chamber (102). An air pump (501) is provided on the exhaust chamber (500). The input end of the air pump (501) is connected to the inside of the exhaust chamber (500) through a connecting pipe (502). A one-way valve is provided at the output end of the air pump (501).

7. The cemented carbide sintering apparatus according to claim 1, characterized in that, The crucible (600) is slidably mounted on two support rods (601), and the two support rods (601) are symmetrically fixed inside the sintering furnace (100).

8. The cemented carbide sintering apparatus according to claim 1, characterized in that, The linkage assembly (700) includes a linkage rod (701) hinged to one end of the crucible (600), and the other end of the linkage rod (701) hinged to an extension rod (702) fixed to the hatch (200).

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