Graphite hot-block die pressing

Abstract

The utility model belongs to the graphite thermal field technical field, concretely relates to a kind of graphite thermal field protection disc tablet, including a plurality of fan face shape splicing press plate that can be split into annular, the splicing press plate is circumferentially inserted in the center connecting block with central axis hole in the axis, the side camber surface of the center connecting block is equipped with annular connecting groove, the inner circle side of the splicing press plate is equipped with plug-in block and can be circumferentially slidably set in the connecting groove, the splicing press plate is also provided with annular locking member, and each splicing press plate is connected with each other.The circumference of the center connecting block is equipped with the connecting groove that can be inserted around the splicing press plate, by the close cooperation of plug-in block and connecting groove, the splicing press plate and the center connecting block can be limited to turn over up and down, plus annular locking member locks the radial movement of splicing press plate, integrates multiple splicing press plates into a whole disc, guarantees the effective support to the heat insulation material placed above.

Description

Technical Field

[0001] This utility model belongs to the field of graphite thermal field technology, specifically relating to a graphite thermal field protective plate pressing device. Background Technology

[0002] Graphite thermal fields are a crucial component in monocrystalline silicon manufacturing. Their function is to convert electrical energy into heat energy to melt the silicon material and maintain the single crystal growth at a controlled temperature. Typically made of graphite, these fields possess high thermal conductivity, high heat resistance, and high chemical stability, making them suitable for use in high-temperature, high-vacuum environments. As a key component in monocrystalline silicon manufacturing, the performance of the graphite thermal field directly impacts the quality of the monocrystalline silicon. With the continuous development of monocrystalline silicon manufacturing technology, graphite thermal fields are constantly being improved to meet increasingly demanding requirements.

[0003] A graphite thermal field protective plate, disclosed in patent CN222846887U, relates to the field of protective plate technology. It includes a protective plate body and a protective plate cover. The protective plate body is a circular thin-disc structure, and the protective plate cover is snap-fitted onto the upper part of the protective plate body. The protective plate body is composed of several splicing pieces joined together by snap-fit ​​components. Each splicing piece has an arc-shaped groove on one side. The lower end of the protective plate cover has a heat-insulating groove. A cavity for placing heat-insulating material is formed between the protective plate cover and the protective plate body. This utility model features a spliced ​​protective plate structure, allowing for quick replacement of damaged splicing pieces when some protective plates are damaged. Furthermore, due to the small area of ​​the splicing pieces, their thickness can be appropriately reduced, thereby improving bottom insulation performance, increasing efficiency and energy saving, facilitating installation and disassembly, and improving production efficiency to a certain extent.

[0004] In the above solution, the protective platen cover can only restrict the radial movement of the tablet body and does not have a torsional connection with the tablet body, which makes the suspended axial part prone to collapse downward and thus lose heat. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned problems by providing a graphite thermal field guard plate press that can solve the above-mentioned technical issues.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: The graphite hot zone guard plate includes several fan-shaped splicing plates that can be assembled into a ring. The splicing plates are circumferentially inserted into a central connecting block with a central shaft hole. The side arc surface of the central connecting block has an annular connecting groove. The inner ring side of the splicing plates is provided with a plug block that can be circumferentially slidably disposed in the connecting groove. The splicing plates are also provided with annular locking fasteners to connect the various splicing plates to each other.

[0007] In the graphite hot zone protective plate pressing, the plug block includes a fan-shaped abutting surface and an arc-shaped limiting surface. The abutting surface contacts the two opposite groove walls of the connecting groove, and the limiting surface cooperates with the bottom of the connecting groove.

[0008] In the graphite hot zone protective plate pressing, the abutting surface and the limiting surface can slide circumferentially with the corresponding contact surface in the connecting groove.

[0009] In the graphite hot zone protective plate pressing, the fan-shaped surface of the splicing plate is flush with the axial end face of the central connecting block.

[0010] In the graphite hot zone protective plate pressing sheet, the annular locking fastener is disposed on the fan surface of the same side of the splicing plate, and at least a portion of the annular locking fastener penetrates through the annular locking fastener to the fan surface of the other side.

[0011] In the graphite hot zone protective plate pressing sheet, the annular locking device includes a locking ring and a limiting block. The locking ring is embedded in the annular locking groove formed by splicing the splicing pressing plates, and the limiting block passes through the annular locking device to the other side of the fan-shaped surface.

[0012] In the graphite hot zone protective plate pressing sheet, a positioning through groove is provided in the locking groove, which penetrates the splicing pressing plate to the other side of the fan-shaped surface, and the limiting block is inserted into the positioning through groove.

[0013] In the graphite hot zone protective plate pressing, the locking ring is provided with a positioning protrusion on the opposite side of the limiting block, and the positioning protrusion is higher than the opening of the locking groove.

[0014] In the graphite hot field protective plate pressing, the splicing plate is provided with uniformly distributed electrode through holes, and the inner wall of the electrode through holes is also provided with radially deformable redundant grooves.

[0015] In the graphite hot field protective plate pressing sheet, the complete electrode through hole is formed by splicing semi-circular notches on the edges of adjacent splicing plates.

[0016] The advantages of this utility model are: The circumference of the central connecting block has a connecting groove for the splicing pressure plate to be inserted around it. The tight fit between the insertion block and the connecting groove restricts the up-and-down rotation of the splicing pressure plate and the central connecting block. In addition, the annular locking fastener locks the radial movement of the splicing pressure plate, integrating multiple splicing pressure plates into a whole disc, ensuring effective support for the heat insulation material placed on top. Attached Figure Description

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

[0018] Figure 2This is a cross-sectional structural diagram of the present invention.

[0019] Figure 3 This is a schematic diagram of the splicing pressure plate structure of this utility model.

[0020] Figure 4 This is a schematic diagram of the ring-shaped locking device structure of this utility model.

[0021] In the diagram, there are splicing pressure plate 1, plug-in block 11, top surface 12, limiting surface 13, locking groove 14, positioning through groove 15, electrode through hole 16, deformation redundancy groove 17, center connecting block 2, central shaft hole 21, connecting groove 22, annular locking device 3, locking ring 31, limiting block 32, and positioning protrusion 33. Detailed Implementation

[0022] The following are specific embodiments of the utility model, which are described in conjunction with the accompanying drawings. However, the utility model is not limited to these embodiments.

[0023] like Figures 1-4 As shown, the graphite hot zone guard plate includes several fan-shaped splicing plates 1 that can be assembled into a ring. The splicing plate 1 is circumferentially inserted into a central connecting block 2 with a central shaft hole 21. The side arc surface of the central connecting block 2 has an annular connecting groove 22. The inner ring side of the splicing plate 1 is provided with a plug block 11 that can be circumferentially slidably in the connecting groove 22. The splicing plate 1 is also provided with an annular locking fastener 3 to connect the various splicing plates 1 to each other.

[0024] That is, a connecting groove is opened on the circumference of the central connecting block so that the splicing pressure plate can be inserted around it. Through the tight fit between the insertion block and the connecting groove, the up and down flipping of the splicing pressure plate and the central connecting block can be restricted. In addition, the annular locking fastener locks the radial movement of the splicing pressure plate, integrating multiple splicing pressure plates into a whole disc, ensuring effective support for the heat insulation material placed on top.

[0025] In addition, the central connecting block 2 can rotate relative to the axis of the disc formed by the splicing pressure plates 1, so the central shaft hole 21 can rotate together with the central shaft supporting the crucible, and the central connecting block 2 and the central shaft have a tighter fit for sealing.

[0026] In this embodiment, the plug block 11 includes a fan-shaped abutting surface 12 and an arc-shaped limiting surface 13. The abutting surface 12 contacts the two opposite groove walls of the connecting groove 22, and the limiting surface 13 cooperates with the bottom of the connecting groove 22.

[0027] The upper and lower surfaces of the plug-in block 11 are simultaneously attached to the groove wall of the connecting groove 22, preventing the plug-in block from swinging in the longitudinal direction, so that the pressure plate forms a rigid structure from the axis to the edge. The limiting surface 13 abuts against the bottom of the connecting groove 22, controlling the insertion depth of the splicing pressure plate so that each locking groove 14 can be aligned and connected.

[0028] In this embodiment, the abutting surface 12 and the limiting surface 13 can slide circumferentially with the corresponding contact surface in the connecting groove 22.

[0029] The central connecting block 2 can rotate relative to the axis of the disc formed by the splicing pressure plates 1. The central connecting block 2 is sleeved on the central shaft. When it is necessary to replace the splicing pressure plate 1, it can be radially disassembled from the side of the hot zone, which not only improves the heat preservation performance but also improves the replacement efficiency.

[0030] In this embodiment, the fan-shaped surface of the splicing pressure plate 1 is flush with the axial end face of the central connecting block 2.

[0031] The axial length of the central connecting block 2 is the same as the thickness of the splicing pressure plate 1. After splicing, the end face of the disc is flat, which is more suitable for laying thermal insulation materials.

[0032] In this embodiment, the annular locking fastener 3 is disposed on the fan surface of the same side of the splicing pressure plate 1, and at least a portion of the annular locking fastener 3 penetrates through the annular locking fastener 3 to the fan surface of the other side.

[0033] The ring-shaped fastener 3 is a standard ring structure used to connect with each splicing pressure plate 1, so that the splicing pressure plates 1 are aligned and spliced ​​into a complete disc. At the same time, protruding structures are inserted into each splicing pressure plate 1 to ensure the stability between the splicing pressure plates 1 after splicing.

[0034] In this embodiment, the annular locking device 3 includes a locking ring 31 and a limiting block 32. The locking ring 31 is embedded in the locking groove 14 formed by splicing the splicing pressure plates 1. The limiting block 32 passes through the annular locking device 3 to the other side of the fan surface.

[0035] Each splicing pressure plate 1 abuts against the bottom of the connecting groove 22, thereby radially aligning the splicing pressure plates 1 and connecting the locking grooves 14 on each pressure plate to form an annular groove. Under the engagement of the locking ring 31, the splicing pressure plates 1 are locked and moved. The protruding limiting block 32 extends from the bottom of the upper locking groove 14 to the lower side and is supported on the frame together with the lower side of the splicing pressure plate 1, thereby reducing the pressure on the splicing pressure plate 1 from the upper insulation cylinder.

[0036] In this embodiment, a positioning through groove 15 is provided in the locking groove 14, which penetrates the splicing pressure plate 1 to the other side of the fan-shaped surface, and the limiting block 32 is inserted into the positioning through groove 15.

[0037] The positioning groove 15 matches the shape of the limiting block 32, further improving the stability of the splicing pressure plate 1 and preventing the locking ring 31 from rotating in the locking groove.

[0038] The lower end of the limiting block 32 is flush with the opening of the positioning through groove 15, and both of them contact the frame together.

[0039] In this embodiment, the locking ring 31 is provided with a positioning protrusion 33 on the opposite side of the limiting block 32, and the positioning protrusion 33 is higher than the groove of the locking groove 14.

[0040] A positioning protrusion 33 is provided on the upper side of the locking ring 31 corresponding to the limiting block 32. The diameter of each positioning protrusion 33 is the same as that of the insulation cylinder, so that the insulation cylinder can be placed according to the inner side of the positioning protrusion 33, thereby improving the concentricity of the insulation cylinder and the crucible.

[0041] In this embodiment, the splicing plate 1 is provided with uniformly distributed electrode through holes 16, and the inner wall of the electrode through holes 16 is also provided with radially deformable redundant grooves 17.

[0042] The splicing plate 1 needs to have openings that allow the electrodes connected to the heater to pass through, and at the same time, an inner cavity is opened on the inner wall of the through hole to reduce its own weight without affecting the strength of the pressing plate, and also to provide space for the deformation of the pressing plate after thermal expansion.

[0043] In this embodiment, the complete electrode through hole 16 is formed by splicing semi-circular notches on the edges of adjacent splicing pressure plates 1.

[0044] Considering that the splicing pressure plate 1 is replaced by side insertion, the electrode passing through the splicing pressure plate 1 will hinder the replacement. Therefore, adjacent splicing pressure plates 1 are combined to form the electrode through hole 16, so that the electrode post will not block the installation or removal of a single splicing pressure plate 1.

[0045] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A graphite thermal field protective plate, comprising several fan-shaped splicing plates (1) that can be assembled into a ring, characterized in that, The splicing plate (1) is circumferentially inserted into the central connecting block (2) with a central shaft hole (21) in the center. The side arc surface of the central connecting block (2) is provided with an annular connecting groove (22). The inner ring side of the splicing plate (1) is provided with a plug block (11) which can be circumferentially slidably in the connecting groove (22). The splicing plate (1) is also provided with an annular locking fastener (3) to connect each splicing plate (1) to each other.

2. The graphite hot zone guard plate pressing according to claim 1, characterized in that, The plug block (11) includes a fan-shaped abutting surface (12) and an arc-shaped limiting surface (13). The abutting surface (12) contacts the two opposite groove walls of the connecting groove (22), and the limiting surface (13) cooperates with the bottom of the connecting groove (22).

3. The graphite thermal field guard plate pressing according to claim 2, characterized in that, The abutting surface (12) and the limiting surface (13) can slide circumferentially with the corresponding contact surface in the connecting groove (22).

4. The graphite thermal field guard plate pressing according to claim 1, characterized in that, The fan-shaped surface of the splicing pressure plate (1) is flush with the axial end face of the central connecting block (2).

5. The graphite thermal field guard plate pressing according to claim 1, characterized in that, The annular locking fastener (3) is disposed on the same side of the splicing pressure plate (1) on the fan surface, and at least a portion of the annular locking fastener (3) extends through the annular locking fastener (3) to the other side of the fan surface.

6. The graphite thermal field guard plate pressing according to claim 5, characterized in that, The annular locking device (3) includes a locking ring (31) and a limiting block (32). The locking ring (31) is embedded in the annular locking groove (14) formed by splicing the splicing pressure plates (1). The limiting block (32) passes through the annular locking device (3) to the other side of the fan surface.

7. The graphite thermal field guard plate pressing according to claim 6, characterized in that, The locking groove (14) has a positioning through groove (15) that penetrates the splicing pressure plate (1) to the other side of the fan surface, and the limiting block (32) is inserted into the positioning through groove (15).

8. The graphite thermal field guard plate pressing according to claim 6, characterized in that, The locking ring (31) has a positioning protrusion (33) on the opposite side of the limiting block (32), and the positioning protrusion (33) is higher than the opening of the locking groove (14).

9. The graphite hot zone guard plate pressing according to claim 1, characterized in that, The splicing plate (1) has uniformly distributed electrode through holes (16), and the inner wall of the electrode through holes (16) is also radially provided with deformation redundancy grooves (17).

10. The graphite thermal field guard plate pressing according to claim 9, characterized in that, The complete electrode through hole (16) is formed by splicing semi-circular notches on the edges of adjacent splicing pressure plates (1).

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