Integrated forming device and forming method for thick-wall narrow frame made of fiber composite material
Through the integrated forming device and molding method of fiber composite thick-wall narrow frame, the continuous winding problem of thick-wall narrow frame is solved, efficient and complete one-time molding is achieved, and production efficiency and product quality are improved.
Patent Information
- Application Number
- CN202510936332.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-08
- Publication Date
- 2025-08-29
AI Technical Summary
In the prior art, when making fiber composite reinforced frames, there are problems of inconsistency in thickness, waste of materials and difficulty in processing. Especially when making thick-walled narrow frames, it is difficult to achieve integrated molding and maintain the continuity of the fibers.
A fiber composite thick-wall narrow frame integrated molding device is adopted, including mold, fixed tooling and flange. Through the mold design and the flap structure of the fixed tooling, the continuous winding forming of the fiber is achieved, avoiding the spill area of open molding and ensuring the integrity of the thick-wall narrow frame.
The single-use molding of thick-walled narrow frames is achieved, avoiding material waste and secondary processing, improving production efficiency and product quality, and ensuring the continuous and completeness of fibers.
Smart Images
Figure CN120552384A_ABST
Abstract
Description
Technical Field
[0001] The present invention belongs to the technical field of fiber composite material design, and in particular relates to a fiber composite material thick-wall narrow frame integrated molding device and molding method. Background Art
[0002] In recent years, fiber composite materials have been widely used in pipelines due to their lightweight, high-strength, and corrosion-resistant properties. Fiber composite pipes are manufactured using a continuous filament winding process, requiring them to be spliced or connected to meet the requirements of varying pipeline lengths. For large fiber composite pipes, to meet the design requirements of long runs, high capacity, high load-bearing capacity, and reliable connections, reinforced flanges are required at both ends to provide reinforcement and secure connections.
[0003] At present, when making composite material reinforcement frames, open winding molding is mostly used. As the wall thickness of the reinforcement frame increases, the fibers at both ends of the reinforcement area will slide and accumulate to both sides. In order to meet the consistency of the thickness in the reinforcement area, the actual reinforcement area needs to be widened during winding, and a certain winding overflow area needs to be designed to ensure the thickness of the fiber layer in the reinforcement area. This open-molded reinforcement frame needs to be mechanically processed after molding and solidification to remove the overflow area, which destroys the continuity of some fibers. In addition, due to the instability of sliding at both ends during molding, the thickness of the reinforcement frame at both ends after processing is often insufficient, which brings difficulties to later repair. In addition, the thicker the wall thickness of the reinforcement frame, the wider the width of the overflow area will be. Moreover, for reinforcement frames with large wall thickness and small width, or when the structural design of the product does not meet the overflow area size, the overflow area required for molding cannot be realized, and the reinforcement frame cannot be formed. This puts forward a demand for how to achieve integrated winding molding of thick-walled narrow frames. Summary of the Invention
[0004] In view of this, in order to solve the problem of continuous fiber integrally winding to form a thick-walled narrow frame mentioned in the background art, the present invention proposes a fiber composite material thick-walled narrow frame integrally forming device and forming method.
[0005] To achieve the above-mentioned purpose, the present invention adopts the following technical solution: a fiber composite material thick-wall narrow frame one-piece molding device, including a mold, two No. 1 molding tools, two No. 2 molding tools and a flange, the mold is a stepped shaft with small diameters at both ends and a large diameter in the middle, two No. 1 molding tools and two No. 2 molding tools are installed at both ends of the mold from the outside to the inside, and a flange is arranged between the No. 1 molding tool and the No. 2 molding tool on one side.
[0006] Furthermore, stop surfaces are designed at both ends of the middle section of the mold, and the No. 2 molding tool is clamped at the stop surfaces.
[0007] Furthermore, two ends of the middle section of the mold are provided with a No. 1 fixing hole.
[0008] Furthermore, a cylinder with a thick-walled narrow frame structure is wound in the area formed by the two No. 1 forming tools.
[0009] Furthermore, No. 2 fixing holes are provided at corresponding positions of the No. 1 shaping tool and the No. 2 shaping tool.
[0010] Furthermore, the No. 2 shaping tool adopts a petal structure.
[0011] Furthermore, each petal structure of the No. 2 forming tool includes a fixing surface, a forming surface, a connecting block and a connecting hole. Each petal structure is arc-shaped, the inner concave surface is the fixing surface, the outer convex surface is the forming surface, and connecting blocks are provided at both ends, and connecting holes are provided on the connecting blocks.
[0012] Furthermore, a layer of polytetrafluoroethylene cloth is laid outside the cylinder along the edge of the flange size to form a fixed area. The forming surface of each petal of the No. 2 forming tool corresponds to the No. 1 forming tool, and the fixed surface of each petal is in contact with the fixed area. A method for integrally forming a fiber composite material with a thick wall and narrow frame, comprising the following steps: Step 1: Clean the mold, No. 1 shaping tooling and No. 2 shaping tooling, and apply a layer of release agent; Step 2: Insert the two No. 1 molding fixtures from both ends of the mold, fit them together with the stop surface of the mold, insert the bolts into the No. 1 fixing holes, screw them to the fixed threads, and tighten them; Step 3: Wrap the cylinder to 5mm in the area formed by the two No. 1 molding tools; Step 4: Measure the thickness of the flange on the cylinder and lay a layer of polytetrafluoroethylene cloth along the edge of the flange to form a fixing area; Step 5: Place the petal in the No. 2 shaping tool in the placement area of the auxiliary tool, place it on a lifting platform, and move the lifting platform to the fixing area. The forming surface of the petal corresponds to the No. 1 shaping tool, and the fixing surface of the petal contacts and fits in the fixing area. Step 6: Hoist the other petals in sequence, and make them fit in the connection blocks of the petals on the auxiliary tooling in sequence. Insert the bolts into the connection holes and tighten them to complete the connection and fixation of the No. 2 finalized tooling; Step 7: Wrap the fiber in the reinforcement frame forming area formed by the No. 1 and No. 2 shaping tools to a length of 95 mm, cut the fiber, complete the thick-walled narrow frame, hoist it into the curing oven, and rotate it for curing. Step 8: After curing, remove the bolts, take down the split-type No. 2 shaping tool, take down the No. 1 shaping tool, demould, and complete the production of the thick-walled narrow frame.
[0013] Compared with the prior art, the fiber composite material thick-wall narrow frame integrated molding device and molding method described in the present invention have the following beneficial effects: 1. The present invention can form a thick-walled narrow frame by integral winding through the shaping tooling, thereby realizing one-time forming of the thick-walled narrow frame, avoiding the waste of raw materials and dimensional instability when forming the reinforcement frame in an open manner, and ensuring the continuity and integrity of the fiber in one-time forming, avoiding the damage caused by secondary processing, and improving the quality and production efficiency of the pipeline product.
[0014] 2. The molding device of the present invention is simple to install and easy to disassemble, and the molding method is convenient to implement and highly accurate, thereby improving the quality and performance of pipeline products, avoiding secondary processing, saving production time, equipment occupancy time and labor costs, and achieving high production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] The accompanying drawings, which constitute part of the present invention, are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings: Figure 1 This is a three-dimensional schematic diagram of a fiber composite material thick-wall narrow frame integrated molding device according to the present invention; Figure 2 This is a three-dimensional schematic diagram of a mold for a fiber composite material thick-walled narrow-frame integrated molding device according to the present invention; Figure 3 This is a three-dimensional schematic diagram of the installation of a No. 1 positioning tool for a fiber composite material thick-wall narrow frame integrated molding device according to the present invention; Figure 4 This is a three-dimensional schematic diagram of the fixing area of a fiber composite material thick-wall narrow frame integrated molding device according to the present invention; Figure 5 This is a three-dimensional schematic diagram of the petals of the second positioning tool of the fiber composite material thick-wall narrow frame integrated molding device described in the present invention; Figure 6 This is a three-dimensional schematic diagram of the auxiliary tooling of the fiber composite material thick-wall narrow frame integrated molding device according to the present invention; Figure 7 A three-dimensional schematic diagram of the coordination of the auxiliary tooling and the second positioning tooling petals of a fiber composite material thick-wall narrow frame integrated molding device according to the present invention; Figure 8 This is a three-dimensional schematic diagram of the second positioning tool after installation of the fiber composite material thick-wall narrow frame integrated molding device according to the present invention; Figure 9 This is a schematic diagram of the three-dimensional structure of a fiber composite material thick-walled narrow-frame composite material product of a fiber composite material thick-walled narrow-frame integrated molding device according to the present invention; Among them, 1-mold, 2-No. 1 molding tool, 3-cylinder, 4-No. 2 molding tool, 5-flange, 6-No. 1 fixing hole, 7-No. 2 fixing hole, 8-fixing thread, 9-stop surface, 10-fixing area, 11-fixing surface, 12-molding surface, 13-connecting block, 14-connecting hole, 15-auxiliary tool, 16-placement area. DETAILED DESCRIPTION
[0016] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely explain the technical solutions in the embodiments of the present invention. It should be noted that the embodiments of the present invention and the features therein can be combined with each other in the absence of conflict, and the embodiments described are only part of the embodiments of the present invention, not all of the embodiments.
[0017] See also Figure 1-9 To illustrate this embodiment, a fiber composite material thick-walled narrow frame one-piece molding device includes a mold 1, two No. 1 molding tools 2, two No. 2 molding tools 4, a flange 5 and a No. 1 fixing hole 6. The mold 1 is a stepped shaft with small diameters at both ends and a large diameter in the middle. Two No. 1 molding tools 2 and two No. 2 molding tools 4 are respectively installed at both ends of the mold 1 from the outside to the inside. A flange 5 is provided between the No. 1 molding tool 2 and the No. 2 molding tool 4 on one side.
[0018] Stop surfaces 9 are designed at both ends of the middle section of the mold 1 , and the second shaping tool 4 is clamped on the stop surfaces 9 .
[0019] Several fixing threads 8 are also provided on the outer periphery of both ends of the middle section of the mold 1. A No. 1 fixing hole 6 is provided on the No. 1 shaping tool 2. The No. 1 fixing hole 6 corresponds to the fixing thread 8. The bolt is inserted into the No. 1 fixing hole 6 and screwed to the fixing thread 8 to fix the No. 1 shaping tool 2 on the mold 1.
[0020] The cylinder 3 is wound in the area formed by the two No. 1 shaping tools 2.
[0021] No. 2 fixing holes 7 are provided at corresponding positions of the No. 1 shaping tool 2 and the No. 2 shaping tool 4, and the No. 1 shaping tool 2 and the No. 2 shaping tool 4 are fixed by bolts to avoid the stress release generated during the fiber winding process from affecting the tooling.
[0022] The second shaping tool 4 adopts a petal structure, such as Figure 1 As described above, it is divided into three petals for easy fixation and disassembly.
[0023] Each petal structure of the No. 2 shaping tool 4 includes a fixing surface 11, a molding surface 12, a connecting block 13 and a connecting hole 14. Each petal structure is arc-shaped, with the inner concave surface being the fixing surface 11 and the outer convex surface being the molding surface 12. Connecting blocks 13 are provided at both ends, and connecting holes are provided on the connecting blocks 13.
[0024] A layer of polytetrafluoroethylene cloth is laid along the edge of the flange 5 outside the cylinder 3 to form a fixing area 10. The forming surface 12 of each petal of the No. 2 forming tool 4 corresponds to the No. 1 forming tool 1, and the fixing surface 11 of each petal is in contact with the fixing area 10.
[0025] To achieve the above objectives, the present invention adopts the following technical solution: a molding method using a fiber composite material thick-wall narrow frame integrated molding device, specifically comprising the following steps: (1) Clean the mold 1, the No. 1 shaping tool 2 and the No. 2 shaping tool 4, and apply a layer of release agent; (2) Insert two pieces of No. 1 shaping fixtures 2 from both ends of the mold 1, and install them in conjunction with the stop surface 9 of the mold 1. Insert the bolts into the No. 1 fixing holes 6, screw them to the fixing threads 8, and tighten them; (3) Wrap a thick-walled, narrow-framed cylinder 3 to 5 mm thick in the area formed by the two pieces of No. 1 molding tool 2; (4) Measure the width of the flange 5 on the cylinder 3 and lay a layer of polytetrafluoroethylene cloth along the edge of the flange 5 to form a fixing area 10 for easy positioning and disassembly; (5) Place the petal of the second shaping tool 4 in the placement area 16 of the auxiliary tool 15, place it on a lifting platform, and move the lifting platform to the fixing area 10. The forming surface 12 of the petal corresponds to the first shaping tool 1, and the fixing surface 11 of the petal contacts and fits with the fixing area 10; (6) Hoist the other two petals in sequence, so that they fit in with the connecting block 13 of the petals on the auxiliary fixture in sequence, insert the bolts into the connecting holes 14, tighten them, and complete the connection and fixation of the No. 2 finalized fixture 4; (7) Wrap the fiber in the reinforcement frame forming area formed by the No. 1 shaping tool 2 and the No. 2 shaping tool 4 to 95 mm (≥30 mm is a thick-walled reinforcement frame), cut the fiber, complete the forming of the thick-walled narrow frame, hoist it to the curing furnace, and rotate it for curing; (8) After curing, remove the bolts, remove the split-type No. 2 shaping fixture 4, remove the No. 1 shaping fixture 2, demould, and complete the thick-walled narrow frame (such as Figure 9 As shown, the thick-walled narrow frame structure includes a cylinder 3 and reinforcement frames located at both ends.
[0026] The embodiments of the present invention disclosed above are intended only to illustrate the present invention. The embodiments do not describe all details in detail, nor do they limit the present invention to the specific embodiments described. Numerous modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention.
Claims
1. A method for integrally forming a thick-walled narrow frame of a fiber composite material, characterized by: The specific steps include: Step 1: Clean the mold (1), the No. 1 shaping tool (2) and the No. 2 shaping tool (4), and apply a layer of release agent; Step 2: Insert two pieces of No. 1 shaping fixtures (2) from both ends of the mold (1) and install them in conjunction with the stop surface (9) of the mold (1). Insert the bolts into the No. 1 fixing holes (6) and screw them to the fixing threads (8) and tighten them. Step 3: Wrap the cylinder (3) to 5 mm in the area formed by the two pieces of No. 1 shaping tooling (2); Step 4: Measure the thickness of the flange (5) on the cylinder (3), and lay a layer of polytetrafluoroethylene cloth along the edge of the flange (5) to form a fixing area (10); Step 5: Place the petal in the second shaping tool (4) in the placement area (16) of the auxiliary tool (15), place it on a lifting platform, and move the lifting platform to the fixing area (10), so that the forming surface (12) of the petal corresponds to the first shaping tool (2), and the fixing surface (11) of the petal contacts and fits with the fixing area (10); Step 6: Hoist the other petals in sequence, so that they fit in the connection blocks (13) of the petals on the auxiliary fixture in sequence, insert the bolts into the connection holes (14), tighten them, and complete the connection and fixation of the No. 2 fixed fixture (4); Step 7: Wrap and shape the reinforcement frame to 95 mm in the forming area formed by the No. 1 shaping tool (2) and the No. 2 shaping tool (4), cut the fibers, complete the forming of the thick-walled narrow frame, hoist it to the curing furnace, and rotate and cure it; Step 8: After curing, remove the bolts, take down the split-type No. 2 shaping fixture (4), take down the No. 1 shaping fixture (2), demould, and complete the production of the thick-walled narrow frame.
2. A molding device used in the molding method for integrally molding a thick-walled narrow frame of a fiber composite material according to claim 1, characterized in that: It includes a mold (1), two No. 1 molding tools (2), two No. 2 molding tools (4) and a flange (5). The mold (1) is a stepped shaft with a small diameter at both ends and a large diameter in the middle. Two No. 1 shaping fixtures (2) and two No. 2 shaping fixtures (4) are respectively installed at both ends of the mold (1) from the outside to the inside. A flange (5) is provided between the No. 1 shaping fixture (2) and the No. 2 shaping fixture (4) on one side.
3. The fiber composite material thick-wall narrow frame integrated molding device according to claim 2, characterized in that: Stop surfaces (9) are designed at both ends of the middle section of the mold (1), and the No. 2 shaping tool (4) is clamped at the stop surfaces (9).
4. The fiber composite material thick-wall narrow frame integrated molding device according to claim 2, characterized in that: A plurality of fixing threads (8) are further provided on the outer periphery of both ends of the middle section of the mold (1), and a number of fixing holes (6) are provided on the number one shaping fixture (2), and the number one fixing hole (6) corresponds to the fixing threads (8).
5. The fiber composite material thick-wall narrow frame integrated molding device according to claim 2, characterized in that: A cylinder (3) with a thick wall and narrow frame structure is wound in the area formed by two pieces of No. 1 forming tooling (2).
6. The fiber composite material thick-wall narrow frame integrated molding device according to claim 2, characterized in that: No. 2 fixing holes (7) are provided at corresponding positions of the No. 1 shaping tool (2) and the No. 2 shaping tool (4).
7. The fiber composite material thick-wall narrow frame integrated molding device according to claim 2, characterized in that: The second shaping tool (4) adopts a petal structure.
8. The fiber composite material thick-wall narrow-frame integrated molding device according to claim 2, characterized in that: Each petal structure of the second shaping tool (4) comprises a fixing surface (11), a forming surface (12), a connecting block (13) and a connecting hole (14). Each petal structure is arc-shaped, with an inner concave surface being the fixing surface (11) and an outer convex surface being the forming surface (12). Connecting blocks (13) are provided at both ends, and connecting holes are provided on the connecting blocks (13).
9. The fiber composite material thick-wall narrow frame integrated molding device according to claim 8, characterized in that: A layer of polytetrafluoroethylene cloth is laid along the edge of the flange (5) outside the cylinder (3) to form a fixed area (10). The molding surface (12) of each petal of the second shaping tool (4) corresponds to the first shaping tool (2), and the fixing surface (11) of each petal is in contact with the fixing area (10).