A carbon fiber mesh woven tooling and its application method

Abstract

This invention discloses a carbon fiber mesh weaving fixture and its application method, relating to the field of carbon fiber weaving fixture technology. The fixture structure comprises a surrounding plate, connecting rods, and round bars, enabling the convenient weaving of carbon fiber ropes or fabrics into a mesh structure. This woven carbon fiber mesh structure provides excellent weaving tooling for crucibles in the hot zone of single crystal furnaces, as well as in construction, home furnishings, and other fields and scenarios, improving weaving and manufacturing efficiency, saving time, reducing costs, and possessing broad market application prospects. The fixture adopts a modular assembly design, using round bars, insertion holes, connecting rods, and nuts for easy and rapid disassembly, thus improving the lifespan of fixture components. The fixture's splicing components are small in size and uniform in specifications, and can be manufactured using raw material tails or product scraps, achieving material reuse without the need to purchase large-sized raw materials, thereby reducing costs.

Description

Technical Field

[0001] This invention belongs to the field of carbon fiber weaving tooling technology, and in particular relates to a carbon fiber mesh weaving tooling and its usage method. Background Technology

[0002] Carbon fiber woven mesh structures, after deposition and curing, can form a robust shape and have many applications. For example, they can be used in the hot zone of single crystal furnaces as outer crucibles to cover quartz crucibles, as illustrated by technical solutions such as CN218539883U (a combined crucible and a single crystal furnace using the crucible) and CN201614431U (a supporting crucible), which disclose the application of carbon fiber woven mesh structures in the field of crucible technology. Carbon fiber woven mesh structures can also be cast together with concrete to replace steel bars as supporting reinforcement, offering advantages such as long lifespan and corrosion resistance. Furthermore, carbon fiber woven mesh structures can be applied to furniture, serving as support frames for tabletops, seats, etc., offering advantages such as lightweight, high structural strength, long service life, and corrosion resistance.

[0003] Currently, for the application of carbon fiber woven mesh structures in crucible scenarios within the hot zone of single-crystal furnaces, some manufacturers have attempted to use carbon fiber ropes to weave the crucible body and connect it to the integral crucible bottom to form a crucible assembly. However, the direct weaving of the upper crucible body with soft carbon ropes cannot guarantee the final product's size and shape, and it also faces the following challenges: (1) How to ensure the key dimensions of the product requires the design of specialized tooling; (2) Whether the tooling can be quickly separated from the product after the crucible body has undergone deposition and hardening, and whether the tooling can be reused; (3) Whether the tooling can be used after the product size is adjusted. These three issues restrict the large-scale market replacement of this type of new woven crucible. Furthermore, there is a lack of specific tooling for efficient weaving of carbon fiber woven mesh structures in the construction and furniture sectors. To address this, this technical solution proposes a specialized weaving tooling and a corresponding method for using the tooling for carbon fiber woven mesh structures. This solution can solve the problems of existing carbon fiber rope woven crucible bodies in the crucible field not easily guaranteeing product size and shape, and the lack of efficient tooling for weaving operations in the construction, furniture, and other fields. Summary of the Invention

[0004] This invention provides a carbon fiber mesh weaving fixture and its usage method. The fixture structure comprises a surrounding plate formed by interconnected rings, a connecting rod connecting the upper and lower scraper edges of adjacent rings, and round bars inserted into insertion holes circumferentially formed on the surfaces of the scraper and the surrounding plate. This allows carbon fiber ropes or strips to be easily woven into a mesh structure. Furthermore, this fixture, made of graphite or carbon-carbon materials and designed with modular angles, allows for convenient assembly. It solves the problems of existing carbon-carbon crucibles based on mesh structures, which cannot be directly woven, have difficulty in ensuring dimensions, are difficult to separate after deposition and hardening, have short service life, high cost, and cannot be reused. It provides excellent weaving fixtures for carbon fiber mesh structures in single-crystal furnace hot zones, construction, furniture, and other fields, improving weaving and manufacturing efficiency, saving time, reducing costs, and solving the problems in the prior art.

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

[0006] The present invention provides a carbon fiber mesh weaving fixture, comprising a surrounding panel that is assembled and connected together, and a scraper that is connected to the upper and lower ends of two adjacent panels by a connecting rod and clamped and fixed.

[0007] The scraper and the surrounding plate have a circumferential insertion hole, and a round rod is inserted into the insertion hole.

[0008] Furthermore, the surrounding plate, connecting rod, scraper, and round bar are all made of graphite or carbon-carbon materials.

[0009] Furthermore, the scraper has stepped structures on both sides, and adjacent scrapers are interlocked by the stepped structures.

[0010] Furthermore, the scraper surface is provided with a first through hole, and the first through hole is fixedly connected by screws made of graphite or carbon-carbon composite material.

[0011] Furthermore, the end of the connecting rod is a threaded end, which passes through a second through hole opened on the surface of the scraper and is tightened by rotating a nut made of graphite or carbon-carbon composite material.

[0012] Furthermore, the surface of the enclosure is provided with third through holes evenly distributed.

[0013] A method for using a carbon fiber mesh woven tooling includes the following steps:

[0014] S1. Use a carbon fiber rope or carbon fiber strip to perform end loop weaving or mesh structure weaving without restriction on the front and back order;

[0015] Net structure weaving: Starting from one end of a round bar, the carbon fiber rope or carbon fiber strip is wound around a certain round bar at the upper or lower end after a certain number of round bars are spaced upwards or downwards. Then, it is wound around a certain round bar at the lower or upper end again, and so on to form a loop. Starting from the second loop, the carbon fiber rope or carbon fiber strip wound after the loop is crossed and woven with the previously attached carbon fiber rope or carbon fiber strip to form a net structure.

[0016] End ring weaving: Two loops are inserted and wrapped between two adjacent round bars at the upper or lower ends to form an end ring structure with the upper and lower ends arranged.

[0017] S2. After the end loop weaving and mesh structure weaving without restriction on the order of front and back, the carbon fiber rope or carbon fiber belt returns to the starting weaving position. The end section and the head reserved at the beginning end are fastened with carbon wire to complete the weaving. After processes including densification, hardening and vapor deposition, the carbon fiber mesh strengthens the matrix and stabilizes the structure.

[0018] S3. Removing the carbon fiber mesh: Rotate the nut off the connecting rod to loosen and detach the scraper from the top and bottom ends of the enclosure. At this point, remove the round bar from the open insertion hole, and the cured carbon fiber mesh can be easily removed as a whole.

[0019] The present invention has the following advantages over the prior art:

[0020] (1) A carbon fiber weaving tooling structure is formed by a surrounding plate, a connecting rod connecting the upper and lower scraping edges of two adjacent plates, and a round rod inserted into the insertion hole of the scraper and the surrounding plate. This allows carbon fiber rope or carbon fiber cloth to be woven into a mesh structure very conveniently. The woven carbon fiber mesh structure can provide excellent weaving tooling for crucibles in the hot field of single crystal furnace, buildings, home furnishings and other fields and scenarios, improve weaving and manufacturing efficiency, save time, reduce costs, and has a wide market application prospect.

[0021] (2) The carbon fiber woven tooling structure of this technical solution is simple to weave, and can be completed efficiently and quickly by a single worker. It can also achieve standardized carbon fiber mesh structure output, which is conducive to large-scale and standardized production operations. The spliced ​​and assembled tooling can quickly change parts according to the size of different products, achieving rapid replacement in half an hour, which is convenient for grasping the size of the woven crucible and greatly improving the utilization rate of tooling components.

[0022] (3) The carbon fiber braided tooling structure of this technical solution adopts a modular assembly design. The circumferential round bar of the tooling is pressed into the insertion hole by the nut of the upper ring. After the furnace is deposited and hardened, the connecting rod nut is loosened and the round bar can be taken out, realizing the rapid separation of the tooling and the product.

[0023] (4) The tooling assembly components are small in size and uniform in specifications. They can be made from the tail of raw materials or the scrap of products, realizing the secondary use of materials. There is no need to purchase large-sized raw materials, thereby reducing costs.

[0024] (5) In traditional processes, after the product hardens and deposits, the gap between the round bar and the integral insertion hole will be filled. It is difficult to pull the round bar out of the round hole along the axis or it may cause damage to the round bar or the round hole. The arc scraper and the surrounding plate in this design are connected by bolts to form an insertion hole that can be opened and closed at the top and bottom, which can effectively avoid the tooling damage when the round bar is removed and improve the service life of the tooling parts.

[0025] (6) This tooling, made of carbon-carbon composite material or graphite material, can not only meet the temperature requirements for subsequent product hardening and deposition in the furnace, but is also lightweight and more durable and convenient than other materials such as ceramics and alloys.

[0026] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the structure of a carbon fiber mesh weaving tool according to the present invention;

[0029] Figure 2 for Figure 1 Main view of the structure;

[0030] Figure 3 This is a schematic diagram of the diamond-shaped woven mesh woven using this weaving fixture in a specific embodiment;

[0031] Figure 4 This is a schematic diagram of a specific embodiment of a weaving tool for weaving a diamond-shaped carbon fiber woven mesh using this technical solution;

[0032] Figure 5 for Figure 4 A schematic diagram of the structure from the perspective of A;

[0033] Figure 6 This is a schematic diagram of the structure combining a scraper and a round bar.

[0034] Figure 7 An explanatory diagram illustrating a starting action for weaving a carbon fiber crucible strip according to a specific embodiment;

[0035] Figure 8 Based on Figure 7 Based on this, further explain the weaving movements;

[0036] Figure 9 Based on Figure 8 Based on this, an explanatory diagram shows the finishing stage of the weaving process;

[0037] Figure 10 This is a schematic diagram of another weaving fixture for weaving carbon fiber woven mesh in the form of a square tube, according to a specific embodiment.

[0038] Figure 11 for Figure 10 Main view of the structure;

[0039] Figure 12 Based on Figure 11 The diagram illustrates the weaving process of a carbon fiber woven mesh in the form of a square tube.

[0040] The attached diagram lists the components represented by each number as follows:

[0041] 1-Enclosure plate, 101-Scraper, 102-Stepped structure, 103-First through hole, 104-Third through hole, 105-Round bar, 106-Insertion hole, 2-Connecting rod, 201-Threaded end, 202-Nut, 203-Second through hole, 3-Carbon carbon fiber woven mesh, 301-End ring, 302-Mesh structure. Detailed Implementation

[0042] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0043] In the description of this invention, it should be understood that the terms "surrounding", "adjacent", "upper and lower", "both ends", "inner", etc., which indicate orientation or positional relationship, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this invention.

[0044] like Figure 3As shown in this specific embodiment, the corresponding woven carbon fiber mesh 3 is specifically woven from a carbon fiber rope on this tooling. The upper and lower ends are twisted into end loops 301, and a ring-shaped mesh structure 302 is formed by cross-winding between the two loops. The mesh of this ring-shaped mesh structure 302 is specifically equilateral rhombus. Of course, the same structure can be woven using carbon fiber tape. After the woven carbon fiber rope equilateral rhombus mesh is completed, it undergoes densification, hardening, and vapor deposition processes in the prior art to achieve reinforcement of the structural matrix, stability of the structure, and hardening of its surface. It can be applied to It is used as a carbon-carbon crucible in the hot zone of a single crystal furnace; of course, after hardening treatment, the woven mesh structure of this carbon fiber can also replace steel cages in building construction. After pouring concrete or cement, it forms a sturdy building structure with the advantages of being corrosion-resistant, having high structural strength, being lightweight, and having a long service life. Furthermore, after hardening treatment, tabletops, seats, etc., can be added to the surface of this woven carbon fiber mesh structure to form furniture structures such as tables and chairs, which also have the advantages of being lightweight, having high structural strength, having a long service life, and being corrosion-resistant. This provides inspiration for its widespread use in the construction and furniture industries.

[0045] like Figure 1-2 The diagram shown is a schematic diagram and a front view of the woven tooling in a specific embodiment of this technical solution. The tooling adopts a modular design of graphite or carbon-carbon composite materials and is assembled by splicing, which facilitates the replacement of vulnerable parts in the later stage, thereby increasing the service life of the tooling. In this specific embodiment, carbon-carbon composite materials are preferred.

[0046] like Figure 1-2 as well as Figure 4-6As shown, the fixture includes a surrounding plate 1 connected to each other. The upper and lower ends of two adjacent plates 1 are clamped and fixed by scrapers 101 and connecting rods 2. The upper and lower ends of the plates 1 are provided with inward scrapers 101. The sides of the scrapers 101 are provided with stepped structures 102. The stepped structures 102 on both sides adopt an interlocking structure and are fixedly connected by carbon-carbon composite screws through first through holes 103 on the surface. The stepped structures 102 are located in the middle of the end face of the plates 1. The plates 1, the arc-shaped scrapers 101 and the round rods 105 are all made of carbon-carbon composite materials. The surrounding plates 1 provide support for the carbon rope, prevent excessive deformation of the mesh structure, and ensure that the inner diameter of the woven mesh meets customer requirements. The upper and lower scrapers 101 of the same plate 1 are respectively provided with second through holes 203 near the middle of their surfaces. A connecting rod 2 is connected between the two second through holes 203. The end of the connecting rod 2 is a threaded end 201. The threaded end 201 passes through the second through hole 203 and then through a carbon-carbon composite nut. 202 is rotated to press the scraper 101, the surrounding plate 1, and the round bar 105 together; to facilitate rotation, the cross-sectional shape of the middle part of the connecting rod 2 is preferably square in this specific embodiment, but other cross-sectional shapes should also be within the scope of protection of this patent; in this specific embodiment, the surrounding plate 1 is specifically designed as 8 segments, and the corresponding connecting rod 2 is also 8. The surrounding plate 1 is an arc-shaped surrounding plate, forming a cylindrical structure around it, and the corresponding scraper 101 is also an arc-shaped scraper, forming a circular structure around it; the scraper 101 and the surrounding plate 1 are... The mating surface is surrounded by insertion holes 106, which are door-shaped. A round rod 105 is inserted into each insertion hole 106. The round rod 105 is made of carbon steel to facilitate easy removal. The door-shaped structure allows for smooth removal of the round rod 105 after subsequent curing and vapor deposition, avoiding the situation where traditional tooling results in the hole being filled with deposited material, making it difficult to remove the component. The insertion holes 106 located at the stepped structure 102 are formed by overlapping each other after fitting. Figure 6 As shown;

[0047] The arc surface of the enclosure 1 is provided with a third through hole 104 evenly distributed in the circumference, which reduces the weight of the tooling on the one hand, and increases the uniform flow rate of airflow during hardening and deposition on the other hand.

[0048] like Figure 7-9 As shown, the steps for using this tooling are as follows:

[0049] A carbon fiber rope or carbon fiber strip is used for weaving the end loops 301 and the mesh structure 302 without restriction on the order of weaving; in this specific embodiment, the mesh structure 302 is woven first, and then the end loops 301 are woven.

[0050] First, the mesh structure 302 is woven as follows: A carbon fiber rope or carbon fiber strip is used, starting from one end of a carbon carbon rod 105, and then wound downwards at a certain number of carbon carbon rods 105, before being wound around a lower carbon carbon rod 105. Then, it is wound upwards again around an upper carbon carbon rod 105. In this specific embodiment, the interval is the distance of five carbon carbon rods 105. Of course, starting from the bottom and winding upwards can also produce the same technical effect and is also within the protection scope of this technical solution. Starting from the second wrap, the carbon fiber rope or carbon fiber strip wound after the second wrap is cross-woven with the carbon fiber rope or carbon fiber strip that has been attached in the previous sequence to form the mesh structure 302.

[0051] Then, the end rings 301 are woven, specifically at the end and the beginning of the mesh structure 302, respectively at the upper or lower end, and two loops are inserted and wrapped between two adjacent round bars 105 at the upper or lower end to form an end ring 301 structure arranged at the upper and lower ends.

[0052] Next, the carbon fiber rope or carbon fiber belt returns to the starting weaving position, and the end section is fastened to the head reserved at the beginning with carbon wire to complete the weaving. After processes including densification, hardening, and vapor deposition, the carbon fiber mesh is strengthened and the structure is stabilized.

[0053] Finally, the carbon fiber mesh is removed: Rotate the nut 202 off the connecting rod 2 so that the scraper 101 can be loosened and disengaged from the upper and lower ends of the enclosure 1. At this time, remove the round bar 105 from the open insertion hole 106, and the cured carbon fiber mesh can be easily removed as a whole.

[0054] The above embodiments only illustrate the example of weaving the mesh structure 302 first and then the end loops 301. Of course, weaving the mesh structure 302 after weaving the end loops 301 in the opposite direction, or even cross weaving, can produce the same technical effect. Based on the same concept, they belong to the same technology and are also within the protection scope of this technical solution.

[0055] Besides the corresponding carbon fiber mesh being in cylindrical form, it can also be in square form.

[0056] like Figure 10-11 As shown, the difference between this specific embodiment and the above-mentioned cylindrical form is that the corresponding enclosure 1 is spliced ​​together with four rectangular plates, and the corresponding scraper 101 is a structure with four identical isosceles right triangles with a quarter circle cut out in the middle. The four scraper 101 side walls are attached to each other and also based on the stepped structure 102 to achieve a stable structure of upper and lower interlocking. The structure and installation method of the remaining connecting rod 2 and nut 202 are the same.

[0057] like Figure 12As shown, unlike the above-mentioned carbon fiber mesh which is cylindrical, the carbon fiber mesh finally manufactured by the tooling in this specific embodiment is in the form of a square tube.

[0058] Of course, this specification only lists cylindrical and square-shaped carbon fiber woven meshes and corresponding weaving fixtures. Based on different shapes of the surrounding plate 1 and scraper 102, various carbon fiber mesh structures such as triangular tubes, pentagonal tubes, polygonal tubes, and elliptical tubes can also be manufactured, and corresponding weaving fixtures of different styles can be designed. The above structures and fixtures can all be adjusted based on the overall concept of this technical solution and have obvious predictability. They belong to the same technical solution concept and are therefore not limited to the above embodiments. Other similar technical solutions obtained based on the concept and technical idea of ​​this technical solution also fall within the scope of protection of this invention.

[0059] The hardened carbon fiber woven mesh obtained through this technical solution:

[0060] Using the hardened carbon fiber mesh as the crucible liner has the advantages of being lightweight, easy to load into the furnace, and easier to separate from the quartz crucible, thereby increasing the service life of the crucible many times over and reducing enterprise costs.

[0061] Of course, the carbon fiber mesh structure in the above embodiments can not only be applied to crucibles in the hot zone of single crystal furnaces, but also to fields and scenarios such as construction and home furnishing. It provides excellent weaving tooling for the weaving of carbon fiber mesh required in these scenarios, improves weaving and manufacturing efficiency, saves time, reduces costs, and has broad market application prospects.

[0062] The carbon fiber woven tooling structure of this technical solution has a simple weaving method, which can be completed efficiently and quickly by a single worker. It can also achieve standardized carbon fiber mesh structure output, which is conducive to large-scale and standardized production. The spliced ​​and assembled tooling can quickly change parts according to the size of different products, achieving rapid replacement in half an hour. This facilitates the control of the size of the woven crucible and greatly improves the utilization rate of tooling components.

[0063] The tooling for this technical solution also has the following key features:

[0064] (1) Fast changeover: The modular design allows for quick replacement of parts according to the size of different products, enabling rapid generation within half an hour.

[0065] (2) Low cost: Components processed by splicing can utilize the tail of raw materials or the end of products for processing, realizing the secondary use of materials, without the need to purchase large-scale raw materials.

[0066] (3) The carbon round bar in the circumferential direction of the tooling is pressed by the nut on the upper ring. After the material is deposited and hardened in the furnace, the nuts at the top and bottom are loosened, and the round bar can be pulled out to separate the tooling from the product.

[0067] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A carbon fiber mesh woven tooling, characterized in that, It includes a surrounding panel (1) that is assembled and connected together, and a scraper (101) that is connected to the upper and lower ends of two adjacent panels (1) by a connecting rod (2) and clamped and fixed. The scraper (101) has a circumferential insertion hole (106) on the surface that is in contact with the surrounding plate (1), and a round rod (105) is inserted into the insertion hole (106); The end of the connecting rod (2) is a threaded end (201). The threaded end (201) passes through the second through hole (203) opened on the surface of the scraper (101) and is rotated and tightened by a nut (202) made of graphite or carbon-carbon composite material. After the tooling is deposited and hardened in the furnace after being woven by carbon fiber mesh, the nut (202) of the connecting rod (2) can be loosened to remove the round bar (105), thus realizing the rapid separation of the tooling from the product.

2. The carbon fiber mesh weaving fixture according to claim 1, characterized in that, The enclosure (1), connecting rod (2), scraper (101), and round bar (105) are all made of graphite or carbon-carbon composite material.

3. The carbon fiber mesh weaving fixture according to claim 1, characterized in that, The scraper (101) has stepped structures (102) on both sides, and adjacent scrapers (101) are fitted together vertically by the stepped structures (102).

4. The carbon fiber mesh weaving fixture according to claim 3, characterized in that, The scraper (101) has a first through hole (103) on its surface, and the first through hole (103) is fixedly connected by screws made of graphite or carbon-carbon composite material.

5. The carbon fiber mesh weaving fixture according to claim 1, characterized in that, The surface of the enclosure (1) is provided with third through holes (104) evenly distributed.

6. A method of using the carbon fiber mesh woven tooling as described in any one of claims 1-5, characterized in that, Includes the following steps: S1. Use a carbon fiber rope or carbon fiber strip to weave end loops (301) and mesh structure (302) without restricting the front and back order; Weaving of the mesh structure (302): Starting from the end of a round rod (105), the carbon fiber rope or carbon fiber strip wrapped around a certain round rod (105) at the upper or lower end after a certain number of round rods (105) are spaced upward or downward, and then wrapped downward or upward again around a certain round rod (105) at the lower or upper end, and so on to form a circle; starting from the second circle, the carbon fiber rope or carbon fiber strip wrapped around after the second circle is cross-woven with the carbon fiber rope or carbon fiber strip that has been attached to form a mesh structure (302). End ring (301) weaving: Two loops are inserted and wrapped between two adjacent round bars (105) at the upper or lower end to form an end ring (301) structure with the upper and lower ends arranged; S2. After the end rings (301) are woven without restriction on the order of front and back, and the mesh structure (302) is woven, the end section is returned to the starting weaving position by carbon fiber rope or carbon fiber belt. The end section and the head reserved at the starting end are fastened with carbon wire to complete the weaving. After the process including densification, hardening and vapor deposition, the carbon fiber mesh that strengthens the matrix and stabilizes the structure is achieved. S3. Remove the carbon fiber mesh: Rotate the nut (202) off the connecting rod (2) to loosen and detach the scraper (101) from the upper and lower ends of the enclosure (1). At this time, remove the round bar (105) from the open insertion hole (106) so that the cured carbon fiber mesh can be easily removed.

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