Boron carbide ceramic pressureless sintering device

Abstract

The utility model relates to the technical field of boron carbide ceramic pressureless sintering, in particular to a boron carbide ceramic pressureless sintering device which comprises a furnace body, a sintering box, an inner box, a sliding assembly, a limiting mechanism and an adjusting mechanism. The furnace body is rotationally connected with a sealing cover; the sintering box is arranged in the furnace body, and a plurality of supporting rods are arranged between the furnace body and the sintering box; the inner box is movably arranged in the sintering box; the two sliding assemblies are arranged, one ends of the sliding assemblies are connected with the inner box, and the sliding assemblies are connected with the sintering box. The limiting mechanism is arranged in the sintering box, and one end of the limiting mechanism is connected with the inner box and used for limiting the position of the inner box; the adjusting mechanism is arranged on the inner box, and one end of the adjusting mechanism is connected with the limiting mechanism and used for adjusting the limiting mechanism. Through cooperative arrangement of the limiting mechanism and the adjusting mechanism, movement and fixation of the inner box are conveniently controlled, accidental sliding of the inner box is avoided, and operation convenience and use safety are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pressureless sintering of boron carbide ceramics, in particular to a pressureless sintering device for boron carbide ceramics. Background Art

[0002] The pressureless sintering process of boron carbide refers to the process of slurrying and spray drying boron carbide powder into granules, pressing it into a green body with a steel mold and then putting it into a furnace. The whole process is vacuum sintered to 2200 degrees, then kept warm for 60 minutes, and then cooled out of the furnace. The whole process takes 30 hours. The pressureless sintering process achieves the density requirement by shrinking the green body in all directions at high temperature.

[0003] The Chinese patent with the announcement number CN211782682U discloses a pressureless sintering device for boron carbide ceramics, including a furnace body, two thermocouples are fixedly installed on the top and bottom of the inner wall of the furnace body, a sintering box is fixedly installed inside the furnace body, an inner box is movably installed inside the sintering box, and slide grooves are provided on the left and right sides of the inner bottom wall of the sintering box, fixed blocks are fixedly installed on the left and right sides of the bottom of the inner box, and pulleys are movably installed at the bottom of the two fixed blocks. The pressureless sintering device for boron carbide ceramics realizes the stable and controllable temperature of the high-temperature sintering process by setting a sintering box, controls and detects the temperature inside the sintering furnace, effectively improves the sintering quality of the sintering furnace, makes it more convenient to feed and discharge materials when sintering boron carbide ceramics, avoids the situation of burning workers when feeding and discharging materials in the sintering furnace, and improves the safety of the sintering furnace.

[0004] However, the above technical solution has the following disadvantages: when taking and releasing materials, the limit block needs to be moved first to make the clamping plate free from the limit block before the inner box can be moved. In actual operation, two people are required to cooperate to move the inner box, which is very inconvenient. Utility Model Content

[0005] The utility model aims to solve the problems existing in the background technology and proposes a pressureless sintering device for boron carbide ceramics.

[0006] The technical solution of the utility model is: a pressureless sintering device for boron carbide ceramics, comprising:

[0007] a furnace body, which is rotatably connected to a sealing cover;

[0008] A sintering box is arranged in the furnace body, and a plurality of supporting rods are arranged between the furnace body and the sintering box;

[0009] An inner box, which is movably arranged in the sintering box;

[0010] The sliding assembly is provided in two groups, one end of the sliding assembly is connected to the inner box, and the other end of the sliding assembly is connected to the sintering box;

[0011] A limiting mechanism is arranged in the sintering box, one end of which is connected to the inner box to limit the position of the inner box;

[0012] The adjusting mechanism is arranged on the inner box, and one end of the adjusting mechanism is connected to the limiting mechanism for adjusting the limiting mechanism.

[0013] Preferably, each set of sliding components includes a slide rail and a slider; the slide rail is fixedly connected to the bottom of the inner wall of the sintering box, the slider is fixedly connected to the bottom of the inner box, and the slider is slidably connected to the slide rail.

[0014] Preferably, the limiting mechanism includes a mounting shaft, a limiting gear, a limiting rack and a limiting assembly; the mounting shaft is rotatably connected to the bottom of the inner box through a connecting block, the limiting gear is fixedly connected to the mounting shaft, the limiting rack is fixedly connected to the bottom of the inner wall of the sintering box, the limiting gear is adapted to the limiting rack, and the limiting assembly is arranged at the bottom of the inner box to limit the rotation of the limiting gear.

[0015] Preferably, the limiting assembly includes a fixed plate, a connecting rod, limiting teeth and a reset assembly; the fixed plate is fixedly connected to the bottom of the inner box, the connecting rod passes through the fixed plate and is slidably connected to the fixed plate, the limiting teeth are fixedly connected to the connecting rod, the limiting teeth are adapted to the limiting gear, and the reset assembly is arranged on the connecting rod for adjusting the position of the connecting rod.

[0016] Preferably, the reset assembly includes a limiting ring and a reset spring; the limiting ring is fixedly connected to the connecting rod, one end of the reset spring is fixedly connected to the limiting ring, and the other end of the reset spring is fixedly connected to the fixing plate.

[0017] Preferably, the adjustment mechanism includes an adjustment plate, an adjustment rod and a transmission rod; the adjustment plate is rotatably connected to the inner box, two adjustment rods are provided, one end of the two adjustment rods are rotatably connected to the adjustment plate, the transmission rod is rotatably connected to the connecting rod, and the adjustment rod is fixedly connected to the transmission rod.

[0018] Preferably, a plurality of supporting legs are fixedly connected to the bottom of the furnace body, and a heat insulating layer is provided on the inner wall of the furnace body.

[0019] Compared with the prior art, the above technical solution of the utility model has the following beneficial technical effects:

[0020] The utility model adopts the cooperation setting between the limit mechanism and the adjustment mechanism, and the limit teeth are driven to move and disengage from the limit gear by rotating the adjustment plate. The limit gear can rotate freely, and the inner box can move freely. When the adjustment plate is loosened, the limit teeth are fitted with the limit gear under the action of the reset spring, and the limit rack is cooperated to fix the inner box, so as to avoid accidental sliding of the inner box and improve the convenience of operation and the safety of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A three-dimensional diagram of an embodiment of the present utility model;

[0022] Figure 2 A three-dimensional diagram of an embodiment of the present utility model;

[0023] Figure 3 A three-dimensional diagram of an inner box in an embodiment of the present utility model;

[0024] Figure 4 A three-dimensional diagram of a limiting mechanism in an embodiment of the present utility model;

[0025] Figure 5 For this utility model Figure 4 A partial enlarged view of the middle A;

[0026] Figure 6 This is a three-dimensional diagram of a limiting tooth in an embodiment of the present utility model.

[0027] Figure numerals: 1. furnace body; 2. sealing cover; 31. adjusting plate; 32. adjusting rod; 33. transmission rod; 41. mounting shaft; 42. limiting gear; 43. limiting rack; 441. fixing plate; 442. connecting rod; 443. limiting teeth; 4441. limiting ring; 4442. reset spring; 51. slide rail; 52. slider; 6. sintering box; 7. support rod; 8. inner box; 9. support leg. DETAILED DESCRIPTION

[0028] Embodiment 1

[0029] like Figure 1-6 As shown, a pressureless sintering device for boron carbide ceramics proposed by the utility model comprises a furnace body 1, a sintering box 6, an inner box 8, a sliding assembly, a limiting mechanism and an adjusting mechanism;

[0030] The furnace body 1 is rotatably connected to a sealing cover 2, a plurality of supporting legs 9 are fixedly connected to the bottom of the furnace body 1, and a heat insulation layer is provided on the inner wall of the furnace body 1;

[0031] The sintering box 6 is arranged in the furnace body 1, and a plurality of support rods 7 are arranged between the furnace body 1 and the sintering box 6;

[0032] The inner box 8 is movably arranged in the sintering box 6;

[0033] There are two sets of sliding assemblies, one end of the sliding assembly is connected to the inner box 8, and the other end of the sliding assembly is connected to the sintering box 6;

[0034] The limiting mechanism is arranged in the sintering box 6, and one end of the limiting mechanism is connected to the inner box 8 to limit the position of the inner box 8;

[0035] The adjusting mechanism is arranged on the inner box 8, and one end of the adjusting mechanism is connected to the limiting mechanism for adjusting the limiting mechanism.

[0036] Embodiment 2

[0037] like Figure 3 As shown, the utility model proposes a pressureless sintering device for boron carbide ceramics. Compared with the first embodiment, this embodiment further specifically discloses the structure of the sliding assembly; each set of sliding assemblies includes a slide rail 51 and a slider 52; the slide rail 51 is fixedly connected to the bottom of the inner wall of the sintering box 6, the slider 52 is fixedly connected to the bottom of the inner box 8, and the slider 52 is slidably connected to the slide rail 51.

[0038] Embodiment 3

[0039] like Figure 2-6 As shown, a boron carbide ceramic pressureless sintering device proposed by the utility model, compared with the second embodiment, this embodiment further specifically discloses the structure of the limiting mechanism; the limiting mechanism includes a mounting shaft 41, a limiting gear 42, a limiting rack 43 and a limiting assembly; the mounting shaft 41 is rotatably connected to the bottom of the inner box 8 through a connecting block, the limiting gear 42 is fixedly connected to the mounting shaft 41, the limiting rack 43 is fixedly connected to the bottom of the inner wall of the sintering box 6, the limiting gear 42 is adapted to the limiting rack 43, and the limiting assembly is arranged at the bottom of the inner box 8 to limit the rotation of the limiting gear 42, and the limiting assembly includes a fixing plate 441, a connecting rod 442, a limiting gear Teeth 443 and a reset assembly; the fixed plate 441 is fixedly connected to the bottom of the inner box 8, the connecting rod 442 passes through the fixed plate 441 and is slidably connected to the fixed plate 441, the limiting teeth 443 are fixedly connected to the connecting rod 442, the limiting teeth 443 are adapted to the limiting gear 42, and the reset assembly is arranged on the connecting rod 442 for adjusting the position of the connecting rod 442, and the reset assembly includes a limiting ring 4441 and a reset spring 4442; the limiting ring 4441 is fixedly connected to the connecting rod 442, one end of the reset spring 4442 is fixedly connected to the limiting ring 4441, and the other end of the reset spring 4442 is fixedly connected to the fixed plate 441.

[0040] Embodiment 4

[0041] like Figure 2-4 As shown, the utility model proposes a pressureless sintering device for boron carbide ceramics. Compared with the third embodiment, this embodiment further specifically discloses the structure of the adjustment mechanism; the adjustment mechanism includes an adjustment plate 31, an adjustment rod 32 and a transmission rod 33; the adjustment plate 31 is rotatably connected to the inner box 8, and two adjustment rods 32 are provided, one end of the two adjustment rods 32 are rotatably connected to the adjustment plate 31, the transmission rod 33 is rotatably connected to the connecting rod 442, and the adjustment rod 32 is fixedly connected to the transmission rod 33.

[0042] When it is necessary to take or place materials, the sealing cover 2 is opened and the adjusting plate 31 is rotated. The adjusting plate 31 rotates through the adjusting rod 32 and the transmission rod 33 to drive the connecting rod 442 and the limiting teeth 443 to move together. The limiting teeth 443 move out of the limiting gear 42, and the limiting gear 42 can rotate freely. The inner box 8 is pulled out of the sintering box 6. When the adjusting plate 31 is released, the connecting rod 442 pushes the limiting teeth 443 to fit with the limiting gear 42 under the action of the reset spring 4442. The limiting gear 42 cannot rotate, and there is engagement between the limiting gear 42 and the limiting rack 43, thereby limiting the position of the inner box 8 to prevent the inner box 8 from sliding accidentally.

[0043] The implementation modes of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge scope of technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A pressureless sintering device for boron carbide ceramics, characterized in that: include: A furnace body (1) is rotatably connected to a sealing cover (2); A sintering box (6) is arranged in the furnace body (1), and a plurality of support rods (7) are arranged between the furnace body (1) and the sintering box (6); An inner box (8) movably disposed in the sintering box (6); A sliding assembly, which is provided in two groups, one end of the sliding assembly is connected to the inner box (8), and the other end of the sliding assembly is connected to the sintering box (6); A limiting mechanism, which is arranged in the sintering box (6), one end of the limiting mechanism being connected to the inner box (8) for limiting the position of the inner box (8); An adjusting mechanism is arranged on the inner box (8), and one end of the adjusting mechanism is connected to the limiting mechanism for adjusting the limiting mechanism.

2. A pressureless sintering device for boron carbide ceramics according to claim 1, characterized in that: Each set of sliding assemblies comprises a slide rail (51) and a slide block (52); the slide rail (51) is fixedly connected to the bottom of the inner wall of the sintering box (6), the slide block (52) is fixedly connected to the bottom of the inner box (8), and the slide block (52) is slidably connected to the slide rail (51).

3. The pressureless sintering device for boron carbide ceramics according to claim 1, characterized in that: The limiting mechanism comprises a mounting shaft (41), a limiting gear (42), a limiting rack (43) and a limiting assembly; the mounting shaft (41) is rotatably connected to the bottom of the inner box (8) via a connecting block, the limiting gear (42) is fixedly connected to the mounting shaft (41), the limiting rack (43) is fixedly connected to the bottom of the inner wall of the sintering box (6), the limiting gear (42) is matched with the limiting rack (43), and the limiting assembly is arranged at the bottom of the inner box (8) to limit the rotation of the limiting gear (42).

4. A pressureless sintering device for boron carbide ceramics according to claim 3, characterized in that: The limiting assembly comprises a fixing plate (441), a connecting rod (442), limiting teeth (443) and a reset assembly; the fixing plate (441) is fixedly connected to the bottom of the inner box (8); the connecting rod (442) passes through the fixing plate (441) and is slidably connected to the fixing plate (441); the limiting teeth (443) are fixedly connected to the connecting rod (442); the limiting teeth (443) are adapted to the limiting gear (42); and the reset assembly is arranged on the connecting rod (442) for adjusting the position of the connecting rod (442).

5. The pressureless sintering device for boron carbide ceramics according to claim 4, characterized in that: The reset assembly comprises a limiting ring (4441) and a reset spring (4442); the limiting ring (4441) is fixedly connected to the connecting rod (442), one end of the reset spring (4442) is fixedly connected to the limiting ring (4441), and the other end of the reset spring (4442) is fixedly connected to the fixing plate (441).

6. The pressureless sintering device for boron carbide ceramics according to claim 5, characterized in that: The adjustment mechanism comprises an adjustment plate (31), an adjustment rod (32) and a transmission rod (33); the adjustment plate (31) is rotatably connected to the inner box (8); two adjustment rods (32) are provided; one end of each of the two adjustment rods (32) is rotatably connected to the adjustment plate (31); the transmission rod (33) is rotatably connected to the connecting rod (442); and the adjustment rod (32) and the transmission rod (33) are fixedly connected.

7. The pressureless sintering device for boron carbide ceramics according to claim 1, characterized in that: A plurality of supporting legs (9) are fixedly connected to the bottom of the furnace body (1), and a heat insulation layer is provided on the inner wall of the furnace body (1).

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