Modularized tool for impregnation process

Abstract

The modular tool comprises a supporting chassis, a supporting bottom rod, a modular supporting rod, a hanging rod and a three-fork parallel stress sling, the top of the supporting chassis and the bottom of the supporting bottom rod are welded into a whole, the top of the supporting bottom rod is in threaded connection with the bottom of the modular supporting rod, and the bottom of the modular supporting rod is in threaded connection with the hanging rod. The top of the modular supporting rod is in threaded connection with the bottom of the hanging rod, and the hanging rod is detachably connected with a hook arranged at the bottom of the three-fork parallel stress sling through a lifting lug arranged at the top of the hanging rod. The shaping ring can freely slide along the outer walls of the supporting bottom rod and the modular supporting rod and can be locked at any height, so that the tool can quickly adjust the supporting position according to the height specifications of different products, the whole tool does not need to be replaced, and the modular supporting rod is spliced through the bottom external threaded rod and the top internal threaded hole; the number of the supporting rods is increased or decreased according to size requirements of impregnated products, and the overall height of the tool is increased.

Description

Technical Field

[0001] This utility model mainly relates to the field of carbon-carbon composite material processing technology, specifically a modular tooling for the impregnation process. Background Technology

[0002] Carbon / carbon composite materials are used to make crucible supports, crucible liner, and insulation cylinders. These materials have excellent properties such as high purity, high strength, high thermal conductivity, and low coefficient of thermal expansion. They can work for a long time in environments with high temperatures above 1600℃, strong thermal shock, and corrosive silicon vapor, thus becoming the core load-bearing components of single crystal silicon growth furnaces.

[0003] In the densification process of carbon / carbon composite materials, the liquid phase densification, i.e., the impregnation process, requires the use of vertical fixtures to package hot zone products to improve the efficiency of the impregnation process. Traditional impregnation fixtures are mostly centrally fixed structures, which can only meet the impregnation package requirements of crucible-type hot zone products. They cannot adapt to the furnace loading requirements of hot zone products of different sizes / shapes, resulting in low furnace loading efficiency per batch. Different sizes / shapes of hot zone products require different fixture equipment, resulting in waste in impregnation package packaging. Utility Model Content

[0004] This utility model provides a modular tooling for the impregnation process, which solves the technical problems mentioned in the background art, such as the poor flexibility of traditional centrally fixed tooling and its inability to meet the needs of diverse hot zone product sets.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows:

[0006] A modular tooling for an impregnation process includes a support chassis, a support base rod, a modular support rod, a lifting rod, and a three-pronged parallel force-bearing sling. The top of the support chassis is welded to the bottom of the support base rod. The top of the support base rod is threaded to the bottom of the modular support rod. The top of the modular support rod is threaded to the bottom of the lifting rod. The lifting rod is detachably connected to the hook at the bottom of the three-pronged parallel force-bearing sling via a lifting lug at its top. Limiting blocks are welded to both ends of the outer walls of the support base rod and the modular support rod. A shaping ring is fitted onto the outer walls of the support base rod and the modular support rod. Pre-tightening elements are provided at the top and bottom of the shaping ring.

[0007] The pre-tightening component includes a first half-ring and a second half-ring. A locking block is welded to one end of the inner wall of both the first half-ring and the second half-ring. An anti-slip pad is fixedly connected to one end of the locking block.

[0008] Furthermore, the supporting chassis consists of a bottom supporting steel frame and a top disc, with a through circular hole on the surface of the top disc for diversion.

[0009] Furthermore, the supporting base rod, modular support rod, and hanging rod are all composed of three rods distributed at equal angles of 120°. The modular support rod has a threaded rod on the outside of the bottom axis and an internal threaded hole on the top axis that works with the external threaded rod. The modular support rod is modularly spliced ​​through the cooperation of the external threaded rod and the internal threaded hole.

[0010] Furthermore, the shaping ring is made of metal, and its surface has through holes at 120° equal angles for the support base rod and modular support rod to pass through. The diameter of the through holes is larger than the distance between the end points of the limiting blocks at both ends of the outer wall of the support base rod and the modular support rod. In addition, the outer walls of the support base rod and the modular support rod are engraved with scales to clarify the fixing position of the pre-tightening components.

[0011] Furthermore, both the limiting block and the locking block are wedge-shaped blocks with their inclined surfaces facing each other axially. The locking block is inserted between the upper and lower limiting blocks to restrict the axial movement of the shaping ring.

[0012] Furthermore, both ends of the outer walls of the first and second semi-rings are provided with mounting holes, and the two are detachably connected by screws passing through the mounting holes and hexagonal nuts at both ends. The anti-slip pads are tightly attached to the areas of the outer walls of the support base rod and modular support rod without limit blocks.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This utility model, through modular design, can be applied to the impregnation assembly of more different models and specifications of hot zone products. It can realize composite sets of various products including crucible supports, crucible linings, insulation cylinders, carbon plates, etc., maximizing the furnace loading capacity, increasing the number of items loaded per furnace in the impregnation and carbonization process, and reducing the impregnation densification cost. The multi-layer set of products improves the efficiency of the impregnation process, shortens the impregnation densification time, and improves the process production efficiency.

[0015] 2. Moreover, through modular design, the number of support rods can be increased or decreased according to the size requirements of the impregnated products, expanding the overall height of the tooling. The tooling can be quickly adjusted to support the position according to the height specifications of different products without replacing the entire tooling, improving production efficiency and flexibility. At the same time, with the cooperation of the limiting block and the pre-tightening component, the shaping ring can slide freely along the outer wall of the support base rod and the modular support rod and lock at any height, which allows the tooling to be quickly adjusted to support the position according to the height specifications of different products.

[0016] 3. The use of three-pronged parallel force-bearing slings connected to the lifting lugs of the lifting rod ensures that the tooling maintains a vertical force state during lifting and impregnation, avoiding tilting or shaking of the precast body and ensuring the uniformity of impregnation. The resin diversion design of the supporting chassis optimizes the impregnation efficiency, and the anti-adhesion design of the vertical rods improves the convenience of loading and unloading, comprehensively enhancing the performance of the tooling in the production process.

[0017] 4. All components of the tooling in this solution are made of 310S stainless steel, which has the characteristics of high temperature resistance and corrosion resistance. This solves the problem that traditional tooling is easily damaged in high temperature and strong corrosion environment and extends its service life.

[0018] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0020] Figure 2 This is an exploded view of the present invention;

[0021] Figure 3 This is a front view of the present utility model;

[0022] Figure 4 This is a partial structural diagram of the pretensioner of this utility model.

[0023] Numbering on the map:

[0024] 1. Support chassis; 2. Support base rod; 3. Modular support rod; 4. Lifting rod; 5. Shaping ring; 6. Three-pronged parallel force-bearing sling; 7. Limiting block; 8. Pre-tightening component; 801. First half-ring component; 802. Second half-ring component; 803. Locking block; 804. Anti-slip mat. Detailed Implementation

[0025] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the disclosure of the utility model more thorough and comprehensive.

[0026] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0027] Please refer to the appendix carefully. Figure 1-4A modular tooling for an impregnation process includes a support chassis 1, a support base rod 2, a modular support rod 3, a lifting rod 4, and a three-pronged parallel force-bearing cable 6. The top of the support chassis 1 is welded to the bottom of the support base rod 2 as a single unit. The top of the support base rod 2 is threaded to the bottom of the modular support rod 3. The top of the modular support rod 3 is threaded to the bottom of the lifting rod 4. The lifting rod 4 is detachably connected to the hook at the bottom of the three-pronged parallel force-bearing cable 6 via a lifting lug at its top. Limiting blocks 7 are welded to both ends of the outer walls of the support base rod 2 and the modular support rod 3. A shaping ring 5 is sleeved on the outer walls of the support base rod 2 and the modular support rod 3. Pre-tightening elements 8 are provided at the top and bottom of the shaping ring 5.

[0028] The pretensioning component 8 includes a first semi-ring 801 and a first semi-ring 802. A locking block 803 is welded to one end of the inner wall of the first semi-ring 801 and the first semi-ring 802. An anti-slip pad 804 is fixedly connected to one end of the locking block 803.

[0029] In this embodiment, as Figure 1 , Figure 2 and Figure 3 As shown, the support chassis 1 consists of a bottom support steel frame and a top disc. The surface of the top disc has a through circular hole for diversion.

[0030] With the above structure, all components are made of 310S stainless steel. The high temperature resistance and corrosion resistance of 310S stainless steel provide solid and stable support for the bottom support steel frame, increasing the contact area with the placement surface, distributing the weight of the tooling and the product to be impregnated, and effectively preventing the tooling from tilting, shaking or shifting during use, ensuring the stability and safety of the entire impregnation process. The through circular holes on the surface of the top disc allow the resin to flow back smoothly during the impregnation process, avoiding resin accumulation on the bottom plate. This not only reduces resin waste and lowers production costs, but also prevents resin accumulation from affecting the product impregnation effect. At the same time, it reduces the difficulty and workload of cleaning the bottom plate and improves production efficiency.

[0031] In this embodiment, as Figure 1 , Figure 2 and Figure 4 As shown, the support base rod 2, modular support rod 3 and hanging rod 4 are all composed of three rods distributed at equal angles of 120°. The modular support rod 3 has a threaded rod on the outside of the bottom axis and an internal threaded hole on the top axis that works with the external threaded rod. The modular support rod 3 achieves modular splicing through the cooperation of the external threaded rod and the internal threaded hole.

[0032] With the above structure, the three rods are distributed at 120° equal angles to form a symmetrical triangular structure. Compared with single or double rod support, it can provide a more uniform force distribution, significantly enhance the overall rigidity of the tooling, and reduce stress deformation. The design of the bottom external thread rod and the top internal thread hole of the modular support rod 3 allows the modular support rod 3 to be connected end to end, realizing precise expansion of axial length without affecting the assembly of the limit block 7 and the pre-tightening part 8. It can not only adapt to prefabricated bodies of different heights, but also maximize the furnace loading capacity, increase the number of furnace loading parts per furnace in the impregnation and carbonization process, and the multi-layer set can also improve the efficiency of the impregnation process and shorten the impregnation densification time. In addition, the support base rod 2 and the hanging rod 4 are all installed with the modular support rod 3 using a uniform thread installation method, which can be quickly assembled or disassembled without additional tools, greatly shortening the tooling adjustment time.

[0033] In this embodiment, as Figure 4 As shown, the shaping ring 5 is made of metal, and its surface has through holes at 120° equal angles for the support base rod 2 and the modular support rod 3 to pass through. The diameter of the through holes is larger than the distance between the endpoints of the limiting blocks 7 at both ends of the outer wall of the support base rod 2 and the modular support rod 3. Furthermore, the outer walls of the support base rod 2 and the modular support rod 3 are engraved with scales to clarify the fixing position of the pre-tightening member 8.

[0034] Through the above structure, the scale on the outer wall of the support base rod 2 and the modular support rod 3 allows the operator to directly read the installation position of the pre-tightening component 8, avoiding errors caused by estimation based on experience, ensuring that the shaping ring 5 is in a horizontal state, and the diameter of the through hole of the shaping ring 5 is greater than the distance between the endpoints of the limiting block 7, so that the shaping ring 5 can slide freely outside the support base rod 2 and the modular support rod 3.

[0035] In this embodiment, as Figure 4 As shown, both the limiting block 7 and the locking block 803 are wedge-shaped blocks with their inclined surfaces facing each other axially. The locking block 803 is inserted between the upper and lower limiting blocks 7 to restrict the axial movement of the shaping ring 5.

[0036] With the above structure, when the shaping ring 5 carries the workpiece under gravity, it will apply a downward axial force to the pre-tightening member 8. The locking block 803 is inserted between the two limiting blocks 7. The inclined surfaces of the locking block 803 and the limiting block 7 are pressed against each other. According to the principle of inclined plane mechanics, the axial force will be decomposed into a pressure perpendicular to the inclined plane and a component force along the inclined plane. The position where the stepless limiting block 7 is not set can be filled with the excess gap by the anti-slip pad 804, which can fit more tightly with the surface of the rod, greatly improve the friction, and effectively avoid the slippage caused by gravity.

[0037] In this embodiment, as Figure 4As shown, both ends of the outer wall of the first semi-ring 801 and the second semi-ring 802 are provided with mounting holes. The two are detachably connected by screws passing through the mounting holes and hexagonal nuts at both ends. The anti-slip pad 804 fits tightly against the area of ​​the outer wall of the support base rod 2 and the modular support rod 3 where the limit block 7 is not provided.

[0038] With the above structure, the first half-ring 801 and the second half-ring 802 are connected by screws and hexagonal nuts through the mounting holes. This modular splicing design allows the installation of the pre-tightening part 8 to be done without special tools, and can be operated by a single person. When it is necessary to adjust the height of the shaping ring 5, it is only necessary to loosen the nuts, disassemble the first half-ring 801 and the second half-ring 802, slide them to the target position, and then re-tighten them. Compared with traditional welding or integrated structures, the assembly efficiency is effectively improved.

[0039] The specific operating procedure of this utility is as follows: Place the bottom support steel frame of the support base 1 stably on the horizontal ground, ensuring that the support steel frame is in complete contact with the ground. Use its large base area to distribute the weight of the tooling and prevent tilting. The circular through hole of the top disc of the support base 1 faces upward to prepare for subsequent resin reflow.

[0040] Based on the required height of the precast structure, select the corresponding number of modular support rods 3. Align the bottom external threaded rod of the first modular support rod 3 with the internal threaded hole at the top of the support base rod 2, and rotate clockwise until tightened to complete the first section splicing. Then, splice the subsequent modular support rods 3 end to end in the same way, with the top internal threaded hole matching the next bottom external threaded rod, until the target height is reached. During splicing, ensure that the threaded connection is tight to avoid shaking. Also, ensure that the limiting block 7 on the outer wall of the modular support rod 3 is aligned to facilitate the subsequent installation of the shaping ring 5.

[0041] First, temporarily assemble the individual pre-tightening components 8, so that the locking blocks 803 of the first half-ring 801 and the second half-ring 802 are inserted between the upper and lower limit blocks 7 at both ends, ensuring that the inclined surfaces are axially opposite. Then, temporarily fix the first half-ring 801 and the second half-ring 802 with screws through the mounting holes. They do not need to be fully tightened to form a ring structure. Then, put the shaping ring 5 on the top of the rod body and slide it down along the outer wall of the support base rod 2 or the modular support rod 3 until the bottom fits against the pre-installed pre-tightening component 8.

[0042] Screws are inserted through the mounting holes at both ends of the semi-ring, and hexagonal nuts are installed at both ends of the screws. The nuts are gradually tightened so that the two semi-rings press against the shaping ring 5. At the same time, the locking block 803 and the limiting block 7 press against each other to generate radial preload, which presses the anti-slip pad 804 tightly against the smooth area of ​​the rod.

[0043] A set of pre-tightening parts 8 need to be installed at the top and bottom of the same shaping ring 5 to form an upper and lower clamp, so that the preform is stably placed on the surface of the shaping ring 5, ensuring that the center of gravity of the workpiece is aligned with the center of the shaping ring 5, and avoiding the tooling tilting due to eccentric load.

[0044] Align the internal threaded hole at the bottom of the boom 4 with the external threaded rod at the top of the uppermost modular support 3, and tighten by rotating to complete the installation of the boom 4. Engage the hook at the bottom of the three-pronged parallel force-bearing cable 6 with the lug at the top of the boom 4 to ensure a secure connection.

[0045] Start the hoisting equipment and slowly and steadily place the tooling into the impregnation equipment, avoiding collision with the inner wall of the equipment. During the impregnation process, the resin flows back evenly through the circular through-hole of the top disc of the support base 1, reducing waste and keeping the equipment clean. Control the impregnation time and temperature according to the process requirements to ensure that the preform is fully impregnated. After impregnation, use the three-pronged parallel force-bearing slings 6 to vertically lift the tooling out of the impregnation equipment, taking care to avoid resin dripping and workpiece shaking. The vertical structure design of each rod prevents the inner and outer products from sticking together during the impregnation process, reducing the difficulty of loading and unloading. Afterwards, clean the tooling for the next use.

[0046] The present invention has been described above by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvement made by adopting the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, shall be within the protection scope of the present invention.

Claims

1. A modular tooling for an impregnation process comprising a support base (1), a support base bar (2), a modular support bar (3), a boom (4) and a three-pronged parallel force sling (6), characterized in that: The top of the support chassis (1) is welded to the bottom of the support rod (2) as a whole. The top of the support rod (2) is threaded to the bottom of the modular support rod (3). The top of the modular support rod (3) is threaded to the bottom of the lifting rod (4). The lifting rod (4) is connected to the hook at the bottom of the three-pronged parallel force-bearing cable (6) by the lifting lugs set at its top. Limiting blocks (7) are welded to both ends of the outer walls of the support rod (2) and the modular support rod (3). A shaping ring (5) is sleeved on the outer walls of the support rod (2) and the modular support rod (3). Pre-tightening parts (8) are set at the top and bottom of the shaping ring (5). The pre-tightening component (8) includes a first half-ring component (801) and a first half-ring component (802). A locking block (803) is welded to one end of the inner wall of the first half-ring component (801) and the first half-ring component (802). An anti-slip pad (804) is fixedly connected to one end of the locking block (803).

2. The modular tooling for the impregnation process according to claim 1, characterized in that: The supporting chassis (1) consists of a bottom supporting steel frame and a top disc. A through circular hole is provided on the surface of the top disc for diversion.

3. A modular tooling for an impregnation process according to claim 1, characterized in that: The supporting base rod (2), modular support rod (3) and hanging rod (4) are all composed of three rods distributed at equal angles of 120°. The modular support rod (3) has a threaded rod on the outside of the bottom axis and an internal threaded hole for use with the external threaded rod at the top axis. The modular support rod (3) is modularly spliced ​​by the cooperation of the external threaded rod and the internal threaded hole.

4. A modular tooling for an impregnation process according to claim 1, characterized in that: The shaping ring (5) is made of metal and has through holes at 120° angles on its surface for the support base rod (2) and modular support rod (3) to pass through. The diameter of the through holes is greater than the distance between the ends of the limiting blocks (7) on the outer walls of the support base rod (2) and modular support rod (3). The outer walls of the support base rod (2) and modular support rod (3) are engraved with scales to clarify the fixed position of the pre-tightening component (8).

5. A modular tooling for an impregnation process according to claim 1, characterized in that: Both the limiting block (7) and the locking block (803) are wedge-shaped blocks with their inclined surfaces facing each other axially. The locking block (803) is inserted between the upper and lower limiting blocks (7) to restrict the axial movement of the shaping ring (5).

6. A modular tooling for an impregnation process according to claim 1, characterized in that: The first half-ring (801) and the second half-ring (802) have mounting holes at both ends of their outer walls. They are detachably connected by screws through the mounting holes and hexagonal nuts at both ends. The anti-slip pad (804) fits tightly against the area of ​​the outer wall of the support base rod (2) and the modular support rod (3) where there is no limiting block (7).

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