Molybdenum crucible moving device for Bridgman-Stockbarger method

Abstract

The utility model relates to the technical field of crystal growth, in particular to a molybdenum crucible moving device for a Bridgman-Stockbarger method. The heating furnace is fixedly installed at the bottom of the inner side of the fixing frame, a sealing cover is arranged above the heating furnace, a plurality of right-angle rods are fixedly installed at the bottom of the sealing cover, and a crucible body is jointly placed above the bent sections of the right-angle rods; and the lifting assembly is used for controlling the sealing cover to move in the vertical direction. According to the utility model, the screw rod drives the moving ring to spirally move downwards by rotating the knob so as to push each sleeve to move downwards, and then the clamping plates are extruded by the push-pull rods, so that each clamping plate rotates downwards until the clamping plates abut against the surface of the crucible body, and the crucible body can be clamped and fixed, thereby ensuring the stability of the crucible body in the moving process; and the damage risk of the crucible body is reduced.

Description

Technical Field

[0001] This utility model relates to the field of crystal growth technology, and in particular to a molybdenum crucible moving device for crucible lowering method. Background Technology

[0002] A crystal growth furnace is a process testing instrument used in the fields of electronics and communication technology. It is generally used by research institutes, universities, industrial and mining enterprises and other units for zone heating sintering, zone melting (purification, crystal growth) and other purposes for semiconductor, precious metal, crystal and other materials. Under various temperature environments, it can realize crucible rising method and crucible falling method respectively.

[0003] According to the inspection institute, Chinese Patent Publication No. CN217579137U discloses a crystal growth furnace applicable to the crucible lowering method. By starting an electric push rod to drive the fixed base to move downward, and at the same time starting a motor to drive the heating plate to move up and down, the raw material is heated more evenly.

[0004] However, the above-mentioned technical solution only places the crucible on the fixed seat when moving the crucible downwards, lacking the function of fixing the crucible. This can easily cause the crucible to shake and fall during the downward movement, which has certain drawbacks. Utility Model Content

[0005] The purpose of this invention is to solve the problems in the background art by proposing a molybdenum crucible moving device for crucible lowering method.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A molybdenum crucible moving device for a crucible lowering method, comprising:

[0008] Fixture;

[0009] A heating furnace is fixedly installed on the inner bottom of the fixed frame. A sealed cover is provided on the top of the heating furnace. Multiple right-angle rods are fixedly installed on the bottom of the sealed cover. A crucible body is placed on the top of the bent sections of the multiple right-angle rods.

[0010] The lifting assembly is used to control the vertical movement of the sealing cover;

[0011] Multiple clamping assemblies are respectively placed on the outside of each right-angle rod, including a sleeve that is slidably projected onto the surface of the right-angle rod. A push-pull rod is hinged to the surface of the sleeve. The other end of the push-pull rod is rotatably connected to a clamping plate, and the other end of the clamping plate is rotatably connected to the surface of the right-angle rod. A spring is connected between the bottom of the clamping plate and the bent section of the right-angle rod, and the end of the clamping plate away from the right-angle rod abuts against the outer surface of the crucible body.

[0012] A drive assembly for controlling the downward movement of the plurality of sleeves along the surface of the corresponding right-angle bar.

[0013] Preferably, the drive assembly includes a movable ring slidably disposed inside a plurality of right-angle rods, and the movable ring contacts the top of each sleeve. A screw is fixedly installed on the inner side of the movable ring by a plurality of fixing rods, and the screw thread passes through the bottom of the sealing cover.

[0014] Preferably, the lifting assembly includes a movable block fixedly installed on the side of the sealing cover, a lead screw threaded through the top of the movable block, and the lead screw is rotatably installed in a fixed frame, and a drive motor for driving the lead screw to rotate is fixedly installed on the top of the fixed frame.

[0015] Preferably, a knob is fixedly installed on the top of the screw, and multiple protrusions are fixedly installed on the side of the knob.

[0016] Preferably, a plurality of heating tubes are fixedly installed on the inner surface of the heating furnace.

[0017] Preferably, a plurality of guide rods are fixedly installed at the bottom of the sealing cover, and the guide rods are slidably inserted into the top of the heating furnace.

[0018] Compared with existing technologies, the advantages of the molybdenum crucible moving device for crucible lowering method provided by this utility model are as follows:

[0019] This invention uses a knob to rotate a screw, which drives a moving ring to move downwards, thus pushing each sleeve downwards. Then, a push-pull rod is used to press the clamping plates, causing each clamping plate to rotate downwards until it presses against the surface of the crucible body, thereby completing the clamping and fixing of the crucible body. This ensures the stability of the crucible body during movement and reduces the risk of damage to the crucible body. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a molybdenum crucible moving device for a crucible lowering method proposed in this utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the molybdenum crucible moving device for the crucible lowering method proposed in this utility model after the sealing cover is opened;

[0022] Figure 3 This is a partial structural schematic diagram of a molybdenum crucible moving device for a crucible lowering method proposed in this utility model.

[0023] In the diagram: 1. Fixing frame, 2. Heating furnace, 3. Sealing cover, 4. Right angle rod, 5. Crucible body, 6. Sleeve, 7. Clamping plate, 8. Push-pull rod, 9. Spring, 10. Moving ring, 11. Fixing rod, 12. Screw, 13. Knob, 14. Moving block, 15. Lead screw, 16. Drive motor, 17. Guide rod. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] Reference Figures 1 to 3 A molybdenum crucible moving device for a crucible lowering method, comprising:

[0026] A fixed frame 1 and a heating furnace 2 are fixedly installed on the inner bottom of the fixed frame 1. Multiple heating tubes are fixedly installed on the inner surface of the heating furnace 2. A sealing cover 3 is provided above the heating furnace 2. Multiple right-angle rods 4 are fixedly installed at the bottom of the sealing cover 3. A crucible body 5 is placed on the top of the bent sections of the multiple right-angle rods 4. Multiple guide rods 17 are fixedly installed at the bottom of the sealing cover 3. The guide rods 17 are slidably inserted into the top of the heating furnace 2, which helps to improve the stability of the sealing cover 3 when it moves up and down, and also serves to limit the position of the sealing cover 3.

[0027] The lifting assembly is used to control the vertical movement of the sealing cover 3. The lifting assembly includes a movable block 14 fixedly installed on the side of the sealing cover 3. A lead screw 15 is threaded through the top of the movable block 14 and is rotatably installed in the fixed frame 1. A drive motor 16 for driving the lead screw 15 to rotate is fixedly installed on the top of the fixed frame 1. The drive motor 16 controls the rotation of the lead screw 15. The sealing cover 3 can be moved up or down along the inner side of the machine body 1 by the movable block 14, which facilitates the user to disassemble and assemble the crucible body 5.

[0028] Multiple clamping components are respectively placed on the outside of each right-angle rod 4, including a sleeve 6 that slides onto the surface of the right-angle rod 4. A push-pull rod 8 is hinged to the surface of the sleeve 6. The other end of the push-pull rod 8 is rotatably connected to a clamping plate 7, and the other end of the clamping plate 7 is rotatably connected to the surface of the right-angle rod 4. A spring 9 is connected between the bottom of the clamping plate 7 and the bent section of the right-angle rod 4. The end of the clamping plate 7 away from the right-angle rod 4 abuts against the outer surface of the crucible body 5. When multiple clamping plates 7 simultaneously abut against the surface of the crucible body 5, the crucible body 5 can be clamped and fixed.

[0029] A drive assembly is used to control multiple sleeves 6 to move downward along the surface of corresponding right-angle rods 4. The drive assembly includes a movable ring 10 that is slidably disposed inside the multiple right-angle rods 4, and the movable ring 10 is in contact with the top of each sleeve 6. A screw 12 is fixedly installed on the inner side of the movable ring 10 by multiple fixed rods 11, and the screw 12 is threaded through the bottom of the sealing cover 3. A knob 13 is fixedly installed on the top of the screw 12, and multiple protrusions are fixedly installed on the side of the knob 13 to facilitate the user to rotate the knob 13 to drive the screw 12 to rotate.

[0030] The working principle of this utility model is as follows:

[0031] When it is necessary to move the crucible body 5 into the heating furnace 2, place the crucible body 5 on the three right-angle rods 4, and then rotate the knob 13 to make the screw 12 drive the moving ring 10 to move downward in a spiral motion, so as to push each sleeve 6 downward. Then, use the push-pull rod 8 to squeeze the clamping plate 7, so that each clamping plate 7 rotates downward until it is pressed against the surface of the crucible body 5, thus completing the clamping and fixing of the crucible body 5.

[0032] Then, the drive motor 16 controls the lead screw 15 to rotate, causing the moving block 14 to move the sealing cover 3 down until it presses against the top of the heating furnace 2, so that the crucible body 5 can be lowered into the heating furnace 2, thereby ensuring the stability of the crucible body 5 during the movement process and reducing the risk of damage to the crucible body 5.

[0033] Finally, after heating is completed, the screw 15 is reversed by the drive motor 16 to move the crucible body 5 under the sealing cover 3 to the top of the heating furnace 2. Then, the knob 13 is rotated in the opposite direction to make the moving ring 10 spiral upward. Under the action of each spring 9, each clamp 8 will automatically flip upward and detach from the crucible body 5. After it cools down, it can be taken out.

[0034] To further clarify, the aforementioned fixed connection should be interpreted broadly unless otherwise explicitly specified and limited. For example, it may be welding, gluing, or integral molding, or other conventional methods well known to those skilled in the art.

[0035] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A molybdenum crucible moving device for a crucible lowering method, characterized in that, include: Fixture (1); A heating furnace (2) is fixedly installed on the inner bottom of the fixing frame (1). A sealing cover (3) is provided above the heating furnace (2). Multiple right-angle rods (4) are fixedly installed at the bottom of the sealing cover (3). A crucible body (5) is placed on the upper part of the bent section of the multiple right-angle rods (4). A lifting assembly is used to control the vertical movement of the sealing cover (3); Multiple clamping components are respectively placed on the outside of each right-angle rod (4), including a sleeve (6) that slides on the surface of the right-angle rod (4), a push-pull rod (8) is hinged to the surface of the sleeve (6), a clamping plate (7) is rotatably connected to the other end of the push-pull rod (8), and the other end of the clamping plate (7) is rotatably connected to the surface of the right-angle rod (4). A spring (9) is connected between the bottom of the clamping plate (7) and the bent section of the right-angle rod (4), and the end of the clamping plate (7) away from the right-angle rod (4) abuts against the outer surface of the crucible body (5). A drive assembly for controlling the multiple sleeves (6) to move downward along the surface of the corresponding right-angle bar (4).

2. The molybdenum crucible moving device for crucible lowering method according to claim 1, characterized in that, The drive assembly includes a movable ring (10) that is slidably disposed inside a plurality of right-angle rods (4), and the movable ring (10) is in contact with the top of each sleeve (6). A screw (12) is fixedly installed on the inner side of the movable ring (10) by a plurality of fixing rods (11), and the screw (12) is threaded through the bottom of the sealing cover (3).

3. The molybdenum crucible moving device for crucible lowering method according to claim 1, characterized in that, The lifting assembly includes a movable block (14) fixedly installed on the side of the sealing cover (3). A lead screw (15) is threaded through the top of the movable block (14), and the lead screw (15) is rotatably installed in the fixed frame (1). A drive motor (16) for driving the lead screw (15) to rotate is fixedly installed on the top of the fixed frame (1).

4. The molybdenum crucible moving device for crucible lowering method according to claim 2, characterized in that, A knob (13) is fixedly installed on the top of the screw (12), and multiple protrusions are fixedly installed on the side of the knob (13).

5. The molybdenum crucible moving device for crucible lowering method according to claim 1, characterized in that, Multiple heating tubes are fixedly installed on the inner surface of the heating furnace (2).

6. The molybdenum crucible moving device for crucible lowering method according to claim 1, characterized in that, The bottom of the sealing cover (3) is fixedly installed with multiple guide rods (17), and the guide rods (17) are slidably inserted into the top of the heating furnace (2).

Images