Magnetic field lifting mechanism for single crystal production

Abstract

The invention relates to the technical field of magnetic field lifting for single crystal production, in particular to a magnetic field lifting mechanism for single crystal production, which comprises a supporting seat, a screw rod is mounted on the supporting seat, an ejector block is arranged at one end of the screw rod, a synchronous rotating rod is connected to one side of the ejector block, and a connecting block is arranged on the outer side of the synchronous rotating rod. And a driving rotating rod is installed on one side of the connecting block, a driving motor is installed on the driving rotating rod, an internal thread block is connected to the lead screw, a lifting block is arranged on the internal thread block, and an outer magnetic ring is installed on the bottom side of the lifting block. According to the scheme, the possibility that the magnetic field intensity is difficult to control in the single crystal production process is reduced, the possibility that the magnetic field cannot follow and control in real time in the production process is reduced, the controllable lifting effect of the device in the production process is improved, and the possibility that cracks, inclusions and other defects occur when the device works is also improved.

Description

Technical Field

[0001] The present invention relates to the technical field of magnetic field lifting for single crystal production, and particularly to a magnetic field lifting mechanism for single crystal production. Background Art

[0002] A single crystal furnace, also known as a fully automatic direct-pulling single crystal growth furnace, is an important industrial equipment mainly used for producing single crystal materials. The working principle of the single crystal furnace mainly includes three steps: melting, crystallization, and stretching. In an inert gas (such as nitrogen, helium) environment, a graphite heater is used to melt polycrystalline materials such as polysilicon to form a high-temperature liquid. Then, a single crystal is grown by guiding it with a thin crystal seed, and it gradually grows into a dislocation-free single crystal.

[0003] Currently, during the process of single crystal production, the magnetic field intensity usually cannot be effectively controlled, which in turn affects the growth rate and quality of the crystal. This may lead to uneven crystal growth, defects such as cracks and inclusions, and reduce the overall performance of the crystal. For this reason, a magnetic field lifting mechanism for single crystal production is proposed. Summary of the Invention

[0004] The purpose of the present invention is to solve the deficiencies existing in the prior art, and a magnetic field lifting mechanism for single crystal production is proposed.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions: A magnetic field lifting mechanism for single crystal production includes a support base. A lead screw is installed on the support base. A top block is provided at one end of the lead screw. A synchronous rotating rod is connected to one side of the top block. A connecting block is arranged on the outer side of the synchronous rotating rod. A driving rotating rod is installed on one side of the connecting block. A driving motor is installed on the driving rotating rod. An internally threaded block is connected to the lead screw. A lifting block is provided on the internally threaded block. An outer magnetic ring is installed on the bottom side of the lifting block.

[0006] Preferably, there are multiple support bases, which are symmetrically arranged in pairs. A support frame is connected between the support bases. Top blocks are fixed on the top ends of the support bases. The lead screws are rotatably connected between the top blocks and the bottom sides of the support bases.

[0007] Preferably, sliding bars are fixedly installed on the rear sides of the support bases. The internally threaded block is arranged above the lifting block. The rear side of the lifting block is slidably connected to the outer side of the sliding bar. The internally threaded block and the lead screw are in threaded connection. Lifting blocks are connected inside the support bases, and the bottom ends of the lifting blocks are fixedly connected to the top surfaces of the outer magnetic rings.

[0008] Preferably, worm gears are installed on the tops of the lead screws. The worm gears are connected within the top blocks. A worm is arranged on one side of each worm gear. The worm is fixed to the end of the synchronous rotating rod. The worm gears and the worms are meshed with each other. Synchronous rotating rods are arranged between two symmetric top blocks.

[0009] Preferably, the driving motor is a bidirectional motor. Driving rotating rods are connected to the output ends on both sides of the driving motor. Connecting blocks are arranged on both synchronous rotating rods. A bevel gear set is installed within each connecting block. The bevel gear set includes a first bevel gear and a second bevel gear. The first bevel gear is fixedly installed on the outer surface of the synchronous rotating rod. The second bevel gear is installed at the end of the driving rotating rod. The first bevel gear and the second bevel gear are meshed with each other.

[0010] The beneficial effects of the present invention are as follows: In this solution, the driving rotating rod can drive the synchronous rotating rods on both sides to rotate. The worm and the worm gear can facilitate the self-rotation of the lead screw. Cooperating with the internal thread block, the up-and-down lifting of the outer magnetic ring can be realized to achieve the effect of efficient drawing.

[0011] In this solution, the possibility of difficult control of the magnetic field intensity during the production of single crystals is reduced. The possibility that the magnetic field cannot be controlled in real time during the production process is reduced. The controllable lifting effect during the production process of the device is improved. Also, the possibility of avoiding defects such as cracks and inclusions during the operation of the device is improved. Description of the Drawings

[0012] Figure 1 is a schematic structural diagram of a magnetic field lifting mechanism for single crystal production proposed by the present invention; Figure 2 is a schematic top view structural diagram of a magnetic field lifting mechanism for single crystal production proposed by the present invention; Figure 3 is a schematic partial structural diagram of a magnetic field lifting mechanism for single crystal production proposed by the present invention; Figure 4 is a schematic structural diagram of the support base part; Figure 5 is Figure 2 a schematic structural diagram of part A in Figure 6 is a schematic structural diagram of the worm gear and worm within the top block.

[0013] In the figures: 1, support base; 2, support frame; 3, driving motor; 4, connecting block; 5, driving rotating rod; 6, lifting block; 7, synchronous rotating rod; 8, outer magnetic ring; 9, top block; 10, lead screw; 11, slide bar; 12, internal thread block; 13, worm; 14, worm gear; 15, bevel gear set. Detailed Embodiments

[0014] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0015] Embodiment: Refer to Figures 1-6 , a magnetic field lifting mechanism for single crystal production, including a support base 1, a lead screw 10 is installed on the support base 1, a top block 9 is arranged at one end of the lead screw 10, a synchronous rotating rod 7 is connected to one side of the top block 9, a connecting block 4 is arranged outside the synchronous rotating rod 7, a driving rotating rod 5 is installed on one side of the connecting block 4, a driving motor 3 is installed on the driving rotating rod 5, an internal thread block 12 is connected to the lead screw 10, a lifting block 6 is arranged on the internal thread block 12, an outer magnetic ring 8 is installed on the bottom side of the lifting block 6, and a plurality of support bases 1 are provided to realize the stable up and down lifting of the outer magnetic ring 8, which are symmetric with each other in pairs. A support frame 2 is connected between the support bases 1. Top blocks 9 are fixed on the top ends of the support bases 1, and lead screws 10 are rotatably connected between the top blocks 9 and the bottom sides of the support bases 1. Encoders are installed on one side of each support base 1 and are connected to the lead screws 10 to ensure that all the lead screws 10 are lifted synchronously.

[0016] Specifically, slide bars 11 are fixedly installed on the rear sides of the support bases 1 to limit the lifting block 6 to prevent rotation. The internal thread block 12 is arranged on the upper side of the lifting block 6. The rear side of the lifting block 6 is slidably connected to the outside of the slide bar 11. The internal thread block 12 and the lead screw 10 are in threaded connection to realize the up and down lifting of the lifting block 6. The lifting blocks 6 are connected inside the support bases 1, and the bottom ends of the lifting blocks 6 are fixedly connected to the top surfaces of the outer magnetic rings 8.

[0017] Furthermore, worm gears 14 are installed on the top ends of the lead screws 10, the worm gears 14 are connected inside the top blocks 9, a worm 13 is arranged on one side of the worm gear 14, and the worm 13 is fixed to the end of the synchronous rotating rod 7. The worm gear 14 and the worm 13 are meshed with each other to drive the lead screw 10 in the vertical direction to rotate. Synchronous rotating rods 7 are arranged between two symmetric top blocks 9.

[0018] In this embodiment, the driving motor 3 is a bidirectional motor. Driving rotating rods 5 are connected to the output ends on both sides of the driving motor 3. Connecting blocks 4 are arranged on both synchronous rotating rods 7. A bevel gear set 15 is installed inside the connecting block 4. The bevel gear set 15 includes a first bevel gear and a second bevel gear. The first bevel gear is fixedly installed on the outer surface of the synchronous rotating rod 7, and the second bevel gear is installed at the end of the driving rotating rod 5. The first bevel gear and the second bevel gear are meshed with each other.

[0019] Working principle: When producing single crystals, the control drive motor 3 is rotated, and the drive rods 5 on both sides will start to rotate. At this time, the second bevel gear will drive the first bevel gear to rotate, and the synchronous rod 7 will start to rotate. The worms 13 at both ends of the synchronous rod 7 rotate to drive the worm wheels 14 to rotate, and the lead screw 10 rotates continuously to achieve the effect of stable lifting of the lifting block 6. During the lifting process, the magnetic field generated by the outer magnetic ring 8 will improve the drawing quality.

[0020] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0021] The standard parts used in the present invention can all be purchased from the market. The special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part all adopt conventional means such as bolts, rivets, and welding that are mature in the prior art. The machines, parts, and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be elaborated here.

[0022] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A magnetic field lifting mechanism for single crystal production, characterized in that: include: A support seat (1), wherein a screw rod (10) is mounted on the support seat (1), a top block (9) is arranged on one end of the screw rod (10), one side of the top block (9) is connected to a synchronous rotating rod (7), a connecting block (4) is arranged on the outer side of the synchronous rotating rod (7), a driving rotating rod (5) is mounted on one side of the connecting block (4), a driving motor (3) is mounted on the driving rotating rod (5), an internal thread block (12) is connected to the screw rod (10), a lifting block (6) is arranged on the internal thread block (12), and an outer magnetic ring (8) is mounted on the bottom side of the lifting block (6).

2. The magnetic field lifting mechanism for single crystal production according to claim 1, characterized in that: The support seats (1) are provided in plurality and are symmetrical to each other. Support frames (2) are connected between the support seats (1). A top block (9) is fixed on the top of each support seat (1). The screw rod (10) is rotatably connected between the top block (9) and the bottom side of the support seat (1).

3. The magnetic field lifting mechanism for single crystal production according to claim 2, characterized in that: A slide bar (11) is fixedly mounted on the rear side surface of the support seat (1); the internal thread block (12) is arranged on the upper side of the lifting block (6); the rear side surface of the lifting block (6) is slidably connected to the outer side of the slide bar (11); the internal thread block (12) and the screw rod (10) are threadedly connected; the lifting block (6) is connected to the support seat (1); and the bottom end of the lifting block (6) is fixed to the top surface of the outer magnetic ring (8).

4. The magnetic field lifting mechanism for single crystal production according to claim 3, characterized in that: A worm wheel (14) is mounted on the top of each lead screw (10). The worm wheel (14) is connected to the top block (9). A worm (13) is arranged on one side of the worm wheel (14). The worm (13) is fixed to the end of the synchronous rotating rod (7). The worm wheel (14) and the worm (13) are meshed with each other. A synchronous rotating rod (7) is arranged between two symmetrical top blocks (9).

5. The magnetic field lifting mechanism for single crystal production according to claim 4, characterized in that: The drive motor (3) is a bidirectional motor, and the output ends on both sides of the drive motor (3) are connected to a drive rotating rod (5), and the two synchronous rotating rods (7) are provided with a connecting block (4), and a bevel gear group (15) is installed in the connecting block (4), and the bevel gear group (15) includes a first bevel gear and a second bevel gear, the first bevel gear is fixedly mounted on the outer surface of the synchronous rotating rod (7), and the second bevel gear is mounted on the end of the drive rotating rod (5), and the first bevel gear and the second bevel gear are meshed with each other.

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