A cutting fixture for carbon felt in a single crystal furnace

Abstract

This utility model discloses a cutting fixture for carbon felt in a single-crystal furnace, comprising a circular ring and movable rods with both ends located within the ring. Two cutting sliders are fitted around the outer circumference of the movable rods, and cutting pieces with opposing blades are positioned at the bottom of the cutting sliders. The fixture also includes a hand-held block fixedly connected to the movable rods. The hand-held block contacts the inner wall of the circular ring and drives the movable rods and cutting sliders to perform circular motion around the center of the ring. This allows for simultaneous cutting of both ends of the cutting pieces, ensuring consistency and controllable precision in batch cutting of carbon felt, reducing assembly clearances, minimizing heat leakage, and improving the thermal insulation performance of the thermal field.

Description

Technical Field

[0001] This utility model relates to the field of monocrystalline silicon manufacturing technology, specifically to a cutting tool for carbon felt in a monocrystalline furnace. Background Technology

[0002] Existing thermal field systems generally include top insulation, upper, middle, and lower insulation, and bottom insulation. The bottom insulation is composed of graphite soft / solid felt. Currently, the bottom soft felt is cut manually using single sheets. Due to the uncontrollable precision during manual cutting, gaps exist at the mating points when assembling the soft felt, leading to heat leakage at the bottom of the thermal field. This affects crystal pulling to a certain extent, increases power consumption, and increases production costs.

[0003] Therefore, this application is submitted. Utility Model Content

[0004] The purpose of this invention is to provide a cutting fixture for carbon felt in a single crystal furnace, which enables batch cutting of carbon felt, controllable cutting precision, and improved thermal insulation performance, thus solving the problems existing in the prior art.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following solution:

[0006] A cutting fixture for carbon felt in a single crystal furnace includes a ring and a movable rod with both ends located inside the ring. Two cutting sliders are sleeved on the outer periphery of the movable rods. Cutting pieces with opposing blades are provided at the bottom of the cutting sliders. The fixture also includes a hand-held block fixedly connected to the movable rods. The hand-held block contacts the inner wall of the ring and drives the movable rods and cutting sliders to make circular motion around the center of the ring.

[0007] Furthermore, the cutting slider is provided with a horizontal through groove that passes through the moving rod.

[0008] Furthermore, the two ends of the cutting slider are provided with positioning pins that contact the outer peripheral surface of the moving rod.

[0009] Furthermore, the top outer circumference of the movable rod is symmetrically marked with scale lines around the center of the ring.

[0010] Furthermore, an annular sliding groove is formed inside the ring, and a through groove for mounting the moving rod is provided adjacent to the inner wall of the ring. The sliding groove and the through groove are perpendicular to each other.

[0011] Furthermore, the end of the moving rod is provided with a sliding block located within a sliding groove.

[0012] Furthermore, the height of the sliding block is greater than the outer diameter of the moving rod.

[0013] Furthermore, it also includes several support rods at the bottom of the ring that are in contact with the ground.

[0014] Furthermore, it also includes a limiting plate located below the ring, with the bottom end of the cut piece located within a limiting groove provided on the limiting plate.

[0015] Furthermore, the limiting groove is adapted to the cutting piece and has several of them.

[0016] The beneficial effects of this utility model are:

[0017] This invention features a movable rod that moves in a circular motion with the hand-held block within a ring. The movable rod is fitted with a cutting slider and a cutting piece located on the bottom surface of the cutting slider. Simultaneously, the bottom end of the cutting piece is located within the limiting groove of the limiting plate, allowing both ends of the cutting piece to be cut synchronously. This ensures the consistency and controllable precision of batch cutting of carbon felt, reduces the fitting gap during assembly, minimizes heat leakage, and improves the thermal insulation performance of the thermal field. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the assembly structure of the two ends of the movable rod of this utility model inside the circular ring;

[0020] Figure 3 This is a schematic diagram of the assembly structure of the cutting slider of this utility model.

[0021] Reference numerals: 1-ring, 10-sliding groove, 11-through groove, 12-sliding block, 2-support rod, 3-moving rod, 4-cutting slider, 40-cutting piece, 41-through groove, 42-positioning pin, 5-sliding block, 6-limiting plate, 60-limiting groove, 7-hand block. Detailed Implementation

[0022] The present invention will be further described in detail below with reference to the embodiments and accompanying drawings, but the implementation of the present invention is not limited thereto.

[0023] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inner", "outer", "front", "rear", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "have," "install," "connect," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] Example 1

[0026] Embodiment 1 of this utility model is a cutting fixture for carbon felt in a single crystal furnace, including a ring 1 and a movable rod 3 with both ends located inside the ring 1. Two cutting sliders 4 are sleeved on the outer periphery of the movable rod 3. The bottom of the cutting slider 4 is provided with cutting pieces 40 with opposite blades. It also includes a hand block 7 fixedly connected to the movable rod 3. The hand block 7 contacts the inner wall of the ring 1 and drives the movable rod 3 and the cutting sliders 4 to make circular motion around the center of the ring 1.

[0027] Reference Figure 1 This invention primarily utilizes a movable rod 3, capable of circumferential movement, located inside a circular ring 1. Driven by a hand-held block 7, the movable rod 3 and two cutting sliders 4 mounted on it move the cutting blades 40 to cut the outer periphery of the stacked multi-layered carbon felt. During cutting, the blades of the two cutting blades 40 are positioned opposite each other, ensuring that the bottom of the cutting sliders 4 (whose cutting spacing is fixed at this point) are symmetrically positioned on the outer periphery of the carbon felt. The two blades contact the outer periphery of the carbon felt, allowing it to be cut under the action of the hand-held block 7.

[0028] To facilitate adjustment of the position of the cutting slider 4 and ensure contact between the cutting piece 40 and the carbon felt, the cutting slider 4 is provided with a horizontal through groove 41 that passes through the moving rod 3. (Refer to...) Figure 3 The width of the horizontal through groove 41 is slightly larger than the outer diameter of the moving rod 3, facilitating the free left and right movement of the cutting slider 4. Simultaneously, to fix the position of the cutting slider 4, locating pins 42 are provided at both ends of the cutting slider 4, contacting the outer circumferential surface of the moving rod 3. These two ends, where the cutting slider 4 is perpendicular to the horizontal through groove 41, have pre-drilled holes. These holes can be threaded holes or other types of holes, used for assembling the locating pins 42. This ensures that the insertion end of the locating pin 42 makes tight contact with the through groove 41 for fixation, facilitating adjustment of the cutting slider 4's position and providing a fixing function.

[0029] Meanwhile, to ensure cutting accuracy, scale lines are symmetrically arranged on the top outer circumference of the moving rod 3 with respect to the center of the ring 1. The scale lines help to keep the cutting pieces 40 on both sides in symmetrical positions, thereby ensuring consistent cutting dimensions, controllable accuracy, reducing the fitting gap during assembly, and minimizing heat leakage.

[0030] It is important to note that Figure 1 There are two moving rods 3 in total, but the actual number of moving rods 3 is not specified here. The fixed position of the hand block 7 in the moving rod 3 ensures that the end face of its other end is in contact with the inner wall of the ring 1, which on the one hand ensures its firmness when moving on the moving rod 3, and on the other hand expands the cutting distance of the cutting slider 4.

[0031] Example 2

[0032] This embodiment 2 is implemented based on embodiment 1. An annular sliding groove 10 is formed inside the ring 1. A through groove 11 for mounting the moving rod 3 is provided adjacent to the inner wall of the ring 1. The sliding groove 10 and the through groove 11 are perpendicular to each other. A sliding block 12 is provided at the end of the moving rod 3 within the sliding groove 10.

[0033] Specifically, refer to Figure 2 Under the action of the hand block 7, the sliding block 12, which is fixed to both ends of the moving rod 3, moves in a circular motion within the sliding groove 10, thereby causing the cutting slider 4, which is sleeved and fixed in position, to move with the moving rod 3, providing conditions for the hand block 7 to drive the moving rod 3 to move, and at the same time fixing the end of the moving rod 3 to the inside of the ring 1.

[0034] In addition, the height of the sliding block 12 is greater than the outer diameter of the moving rod 3, which can effectively prevent the moving rod 3 from detaching during movement. At the same time, it also shows that the height of the sliding groove 10 is greater than the height of the through groove 11, which is used for limiting. The specific dimensions can be set according to actual needs.

[0035] In some preferred embodiments, a plurality of support rods 2 are also provided at the bottom of the ring 1 and in contact with the ground. The support rods 2 are mainly used to raise the height of the ring 1, so that the cutting sheet 40 can be used for batch cutting of multi-layer stacked carbon felt at the same time, and also to ensure consistency during batch cutting. The support rods 2 can be fixed rods or telescopic rods, and the specific structure and length can be set according to the actual situation. This is prior art and will not be described in detail here.

[0036] Example 3

[0037] This embodiment 3 is implemented based on embodiment 1. To further ensure cutting accuracy during cutting, it also includes a limiting plate 6 located below the ring 1. The bottom end of the cutting piece 40 is located within a limiting groove 60 provided in the limiting plate 6. The limiting groove 60 is adapted to the cutting piece 40 and has several grooves. (Refer to...) Figure 1 The limiting plate 6 located below the ring 1 is also located above the ground. The limiting groove 60 inside it is adapted to the width of the cutting piece 40, so that the bottom end of the cutting piece 40 is located in the limiting groove 60. This allows the top and bottom of the cutting piece 40 to move synchronously during cutting, so that the bottom and top of the multi-layer carbon felt are cut evenly. Furthermore, there can be several limiting grooves 60 to meet the needs of carbon felt with different cutting requirements and improve the reusability of the tooling.

[0038] The working principle of this utility model is as follows: When in use, the multi-layer stacked carbon felt is placed above the surface of the limiting plate 6, at which point the two are coaxial. The positioning pin 42 is released, allowing the cutting slider 4 to move left and right on the moving rod 3 to adjust the cutting spacing. The ring 1 is raised, so that the bottom end of the cutting piece 40 is located in the limiting groove 60 corresponding to the cutting spacing. The hand holds the hand block 7 and rotates it in a circular motion close to the inner wall of the ring 1. As a result, the sliding blocks 12 at both ends of the moving rod 3 move in the sliding groove 10. The cutting piece 40 also performs a circular motion to cut the outer circumference of the carbon felt. Since one end of the cutting piece 40 is fixedly connected to the cutting slider 4 and the other end is located in the limiting groove 60, both ends of the cutting piece 40 are cut synchronously, ensuring the consistency of batch cutting of carbon felt, controllable precision, reducing the fitting gap during assembly, reducing heat leakage, and improving the thermal insulation performance of the thermal field.

[0039] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications, equivalent substitutions, and improvements made to the above embodiments based on the technical essence of the present utility model and within the spirit and principles of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. A cutting fixture for carbon felt in a single crystal furnace, characterized in that, It includes a ring (1) and a movable rod (3) with both ends located inside the ring (1). Two cutting sliders (4) are sleeved on the outer periphery of the movable rod (3). Cutting pieces (40) with opposite blades are provided at the bottom of the cutting sliders (4). It also includes a hand block (7) fixedly connected to the movable rod (3). The hand block (7) contacts the inner wall of the ring (1) and drives the movable rod (3) and the cutting sliders (4) to make circular motion around the center of the ring (1).

2. The cutting fixture for carbon felt in a single crystal furnace according to claim 1, characterized in that, The cutting slider (4) is provided with a horizontal through groove (41) that passes through the moving rod (3).

3. The cutting fixture for carbon felt in a single crystal furnace according to claim 1, characterized in that, The two ends of the cutting slider (4) are provided with positioning pins (42) that contact the outer peripheral surface of the moving rod (3).

4. The cutting fixture for carbon felt in a single crystal furnace according to claim 1, characterized in that, The top outer circumference of the moving rod (3) is symmetrically set with scale lines around the center of the ring (1).

5. The cutting fixture for carbon felt in a single crystal furnace according to claim 1, characterized in that, The inner side of the ring (1) has a ring-shaped sliding groove (10). The sliding groove (10) is adjacent to the inner wall of the ring (1) and has a through groove (11) for mounting the moving rod (3). The sliding groove (10) and the through groove (11) are perpendicular to each other.

6. The cutting fixture for carbon felt in a single crystal furnace according to claim 5, characterized in that, The end of the moving rod (3) is provided with a sliding block (12) located in the sliding groove (10).

7. The cutting fixture for carbon felt in a single crystal furnace according to claim 6, characterized in that, The height of the sliding block (12) is greater than the outer diameter of the moving rod (3).

8. The cutting fixture for carbon felt in a single crystal furnace according to claim 6, characterized in that, It also includes several support rods (2) that are in contact with the ground at the bottom of the ring (1).

9. A cutting fixture for carbon felt in a single crystal furnace according to claim 6, characterized in that, It also includes a limiting plate (6) located below the ring (1), and the bottom end of the cut piece (40) is located in the limiting groove (60) provided by the limiting plate (6).

10. A cutting fixture for carbon felt in a single crystal furnace according to claim 9, characterized in that, The limiting groove (60) is adapted to the cutting piece (40) and has several of them.

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