Composite core forming tool

Abstract

The utility model discloses a twist filament frock technical field's a kind of composite core material forming frock, including bottom plate, the outside bolt connection of bottom plate has baffle, the baffle and bottom plate between formation has installation groove, the installation groove is laid with core material, the upper end of the core material is provided with press plate, the press plate is buckled with baffle, the core material and press plate are all set as splicing structure, the core material is attached with baffle, and gap is formed between adjacent core material.The utility model is by the gap with specific gradient for the design of the splicing of core material, and the press plate is corresponding, the gap between module is extruded and is decomposed and is redirected to pressure, to solve the size error problem that material is because of poor fluidity and reverse accumulation, leading to bottom surface over-thick, over-wide, from the source, substantially reduce the generation rate of dispersion, wrinkle and other internal defects, ensure the high structural strength and excellent geometric fit of final product.

Description

Technical Field

[0001] This utility model relates to the field of twisting tooling technology, and in particular to a composite core material forming tooling. Background Technology

[0002] In specific processes of composite material manufacturing (such as compression molding), twisting fixtures are a core auxiliary tool. Essentially, they are metal plates or mold components with specific shapes (such as guiding slopes). Their main function is to apply pressure and guide the flow of material when semi-solid core material or prepreg is filled into complex mold structures, ensuring that the material is accurately, evenly, and fully filled into every corner of the mold by applying pressure. However, existing technologies have some problems: during the twisting process, when the material is pressed into the preform, the flatness or non-optimized structure of the tooling surface causes the applied pressure to be unable to effectively act on the sharp corner area of ​​the mold R zone. As a result, the material chooses the "path minimization" method due to the excessive flow resistance at the sharp corner, and is forced to accumulate in the opposite direction to the outside of the mold. This results in the part having excessively thick and wide bottom surface dimensional deviations, and it cannot fit tightly with the complex mold closing surface. Therefore, we propose a composite core material forming tooling. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a composite core material forming fixture. By adding a certain angle of slope to both sides of the core material in the twisting fixture, the core material can fully enter the sharp corner area of ​​the mold during the twisting process, rather than being piled up in the opposite direction, resulting in an excessively thick and wide bottom surface. This allows the core material filling to fit more closely to the mold closing surface of the L-shaped preform, effectively reducing dispersion and wrinkle defects.

[0004] The purpose of this utility model is achieved as follows: a composite core material forming fixture includes a base plate, a baffle plate is bolted to the outer side of the base plate, an installation groove is formed between the baffle plate and the base plate, a core material is laid in the installation groove, a pressure plate is provided at the upper end of the core material, the pressure plate is fastened to the baffle plate, the core material and the pressure plate are both spliced, the core material is attached to the baffle plate, a gap is formed between adjacent core materials, and the pressure plate is correspondingly arranged with the core material.

[0005] Optionally, the baffle includes a horizontal plate and a vertical plate, which are arranged perpendicularly. The vertical plate is threaded with a lifting lug, and there are multiple lifting lugs that are symmetrically distributed.

[0006] Optionally, the bottom plate has clearance grooves on both sides, and the lower end of the vertical plate is provided with a claw platform, which is correspondingly provided with the clearance grooves and fits into the clearance grooves.

[0007] Optionally, threaded holes are provided at the lower end and both ends of the core material, and connecting holes are provided on the base plate. The core material is connected to the base plate and the cross plate by bolts.

[0008] Optionally, the core material has bonding surfaces on both sides, the bonding surfaces of adjacent core materials are in contact, the upper end of the core material has a protrusion, the bonding surface and the protrusion are arranged in an arc, and a gap area is formed between the protrusions of adjacent core materials.

[0009] Optionally, the pressure plate is disposed between the protrusions of adjacent core materials, and a boss is provided at the lower end of the pressure plate, the outline of which corresponds to the shape of the gap.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. By designing the core material splicing joints with a specific slope and corresponding pressure plates, the gaps between modules decompose and redirect the extrusion pressure, thereby solving the problem of material back accumulation due to poor flowability, resulting in dimensional errors such as excessive thickness and width of the bottom surface. At the same time, through a progressive compression method, the buckling and instability of the core material at the corners are suppressed, thereby significantly reducing the generation rate of internal defects such as dispersion and wrinkles from the source, ensuring the high structural strength and excellent geometric fit of the final product.

[0011] 2. Through modular and high-precision structural design, significant optimization of production efficiency and maintenance costs is achieved. First, the stable lateral support of the L-shaped vertical baffle ensures precise positioning of the claw platform and clearance groove on the bottom plate. Second, the core material is modularly connected to the bottom plate and cross plate using bolts. The entire system forms a robust, reliable, and easy-to-maintain frame structure, which not only ensures that the core material does not shift laterally during pressurization and ensures the dimensional accuracy of the final product, but also designs the core material as a consumable part that can be quickly disassembled and replaced. When the core material is worn or needs to be adapted to different products, there is no need to rework or replace the entire tooling. Operators only need to loosen the bolts to quickly replace the new core material, shortening tooling preparation and equipment downtime, reducing the production cost of a single product and the complexity of long-term maintenance. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the overall structure provided by this utility model.

[0014] Figure 2 This is an exploded view of the overall structure provided by this utility model.

[0015] Figure 3 This is a schematic diagram of the core material structure provided by this utility model.

[0016] In the diagram: 1. Base plate; 11. Clearance groove; 12. Connecting hole; 2. Baffle; 21. Mounting groove; 22. Horizontal plate; 23. Vertical plate; 24. Lifting lug; 25. Claw platform; 3. Core material; 31. Adhesive surface; 32. Protrusion; 4. Pressure plate; 41. Boss. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] like Figures 1 to 3 The composite core material forming fixture shown includes a base plate 1, a baffle 2 bolted to the outer side of the base plate 1, an installation groove 21 formed between the baffle 2 and the base plate 1, a core material 3 laid in the installation groove 21, a pressure plate 4 set at the upper end of the core material 3, the pressure plate 4 fastening to the baffle 2, both the core material 3 and the pressure plate 4 are spliced, the core material 3 is in contact with the baffle 2, a gap is formed between adjacent core materials 3, and the pressure plate 4 is set correspondingly to the core material 3.

[0019] It should be noted that the addition of a certain angle slope on both sides of the twisting tooling allows the wire to fully enter the sharp corner area of ​​the mold during the twisting process, rather than being piled up in the opposite direction, resulting in an excessively thick and wide bottom surface. This allows the core material 3 filling method to fit more closely to the mold closing surface of the L-shaped preform, effectively reducing defects such as dispersion and wrinkles.

[0020] Furthermore, designing the gap between adjacent core materials 3 as a sloping surface with a guiding function is a core innovation of the tooling in this application. When pressure is applied for filling, the sloping surface is no longer a passive physical boundary, but a hydraulic guide channel that actively guides the flow of material. It can cleverly decompose and redirect the extrusion pressure, enabling it to act precisely on dead corners that are difficult to reach in the right-angle area of ​​traditional molds. This effectively solves the problem of material back accumulation due to poor flow. It not only greatly improves the fit between the final product and the complex mold surface, eliminating dimensional errors such as excessive thickness or width of the bottom surface caused by incomplete filling from the source, but also effectively suppresses the buckling and disorder of the core material 3 at the corners through this progressive pressure method, thereby significantly reducing the occurrence rate of internal defects such as dispersion and wrinkles.

[0021] Specifically, the baffle 2 includes a horizontal plate 22 and a vertical plate 23, which are arranged vertically. The vertical plate 23 is threaded with a lifting lug 24, and there are multiple lifting lugs 24, which are symmetrically distributed.

[0022] Furthermore, the horizontal plate 22 and the vertical plate 23 provide stable, reliable, and vertical lateral support for the installation and molding of the core material 3, ensuring that the core material 3 will not shift or deform laterally during the entire pressurization process, thus guaranteeing the dimensional accuracy of the product. Secondly, multiple symmetrically distributed lifting lugs 24 are used to improve the flexibility and safety of tooling operation. Through the lifting lugs 24, heavy tooling can be smoothly lifted and accurately positioned using cranes, overhead cranes, and other lifting equipment. This not only reduces the labor intensity and operational risks for workers, but also ensures accurate alignment of the tooling during mold closing and opening processes, avoiding bumps or positioning deviations.

[0023] Specifically, the bottom plate 1 has clearance grooves 11 on both sides, the bottom of the vertical plate 23 has a claw platform 25, the claw platform 25 is corresponding to the clearance grooves 11 and fits into the clearance grooves 11, the bottom and both ends of the core material 3 have threaded holes, the bottom plate 1 has a connecting hole 12, and the core material 3 is connected to the bottom plate 1 and the horizontal plate 22 by bolts.

[0024] Furthermore, the clearance groove 11 at the lower end of the base plate 1 provides a stable positioning and support platform for the vertical plate 23, ensuring the verticality and overall rigidity between the vertical plate 23 and the base plate 1, providing a basic guarantee for precise force application in subsequent high-pressure molding. The ends and lower ends of the core material 3 are modularly connected to the base plate 1 and the horizontal plate 22 by bolts. This detachable and reusable connection method allows the core material 3 to be quickly and conveniently replaced when it is a vulnerable part or consumable, reducing maintenance costs and downtime.

[0025] Specifically, the core material 3 has a bonding surface 31 on both sides, the bonding surfaces 31 of adjacent core materials 3 are in contact, the upper end of the core material 3 is provided with a protrusion 32, the bonding surface 31 and the protrusion 32 are arranged in an arc, a gap area is formed between the protrusions 32 of adjacent core materials 3, the pressure plate 4 is arranged between the protrusions 32 of adjacent core materials 3, and the lower end of the pressure plate 4 is provided with a boss 41, the outline of the boss 41 is arranged in accordance with the shape of the gap.

[0026] Furthermore, by setting closely fitting reference surfaces on both sides of the core material 3, it is ensured that the core materials 3 of each module are precisely aligned on the base plate 1 to form a stable and unified overall profile. The gap area formed between the upper protrusion 32 and the boss 41 of the pressure plate 4 is transformed into an independent and controlled pressure area: the boss 41 of the pressure plate 4 can be precisely embedded and applied to this gap like a tenon, transforming the concentrated pressure into local strong pressure on the concave corner area, thereby overcoming the problem of uneven overall pressure distribution, allowing the material to be effectively pushed in, thereby ensuring the filling density at the complex mold surface, and avoiding structural looseness due to insufficient filling or buckling of the core material 3 due to pressure concentration.

[0027] Working principle: By designing the core material 3 splice joint with a gap with a specific slope and correspondingly placing the pressure plate 4, the gap between the modules decomposes and redirects the extrusion pressure, thereby solving the problem of material back accumulation due to poor flowability, resulting in dimensional errors such as excessive thickness and width of the bottom surface. At the same time, through a progressive compression method, the buckling and instability of the core material 3 at the corners are suppressed, thereby significantly reducing the generation rate of internal defects such as dispersion and wrinkles from the source, ensuring the high structural strength and excellent geometric fit of the final product. Through modular and high-precision structural design, significant optimization of production efficiency and maintenance costs is achieved. First, the stable lateral support of the L-shaped vertical baffle 2 ensures precise positioning of the claw platform 25 and the clearance groove 11 on the bottom plate 1. Second, the core material 3 is modularly connected to the bottom plate 1 and the horizontal plate 22 using bolts. The entire system forms a robust, reliable, and easy-to-maintain frame structure, which not only ensures that the core material 3 does not shift laterally during pressurization and ensures the dimensional accuracy of the final product, but also designs the core material 3 as a consumable part that can be quickly disassembled and replaced. When the core material 3 is worn or needs to be adapted to different products, there is no need to rework or replace the entire tooling. The operator only needs to loosen the bolts and quickly replace the new core material 3, which shortens the tooling preparation and equipment downtime, reduces the production cost of a single product, and reduces the complexity of long-term maintenance.

[0028] The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A composite core material forming fixture, comprising a base plate (1), characterized in that: A baffle (2) is bolted to the outside of the base plate (1). An installation groove (21) is formed between the baffle (2) and the base plate (1). A core material (3) is laid in the installation groove (21). A pressure plate (4) is provided at the upper end of the core material (3). The pressure plate (4) is fastened to the baffle (2). The core material (3) and the pressure plate (4) are both spliced. The core material (3) is attached to the baffle (2). A gap is formed between adjacent core materials (3). The pressure plate (4) is correspondingly set to the core material (3).

2. The composite core material forming tooling according to claim 1, characterized in that: The baffle (2) includes a horizontal plate (22) and a vertical plate (23). The horizontal plate (22) and the vertical plate (23) are arranged vertically. The vertical plate (23) is threaded with a lifting lug (24). There are multiple lifting lugs (24), and the multiple lifting lugs (24) are symmetrically distributed.

3. The composite core material forming tooling according to claim 2, characterized in that: The bottom plate (1) has clearance grooves (11) on both sides, and the bottom of the vertical plate (23) is provided with a claw platform (25). The claw platform (25) is correspondingly provided with the clearance groove (11), and the claw platform (25) fits into the clearance groove (11).

4. The composite core material forming tooling according to claim 1, characterized in that: The core material (3) has threaded holes at its lower end and both ends, and the base plate (1) has connecting holes (12). The core material (3) is connected to the base plate (1) and the cross plate (22) by bolts.

5. The composite core material forming tooling according to claim 1, characterized in that: The core material (3) has a bonding surface (31) on both sides, and the bonding surfaces (31) of adjacent core materials (3) are in contact. The upper end of the core material (3) is provided with a protrusion (32). The bonding surface (31) and the protrusion (32) are arranged in an arc. A gap area is formed between the protrusions (32) of adjacent core materials (3).

6. The composite core material forming tooling according to claim 5, characterized in that: The pressure plate (4) is disposed between the protrusions (32) of adjacent core materials (3), and the lower end of the pressure plate (4) is provided with a boss (41), the outline of the boss (41) is provided in accordance with the shape of the gap.

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