An automatic compaction and forming device and method for three-dimensional prefabricated body weaving

Abstract

This invention relates to the field of fiber-reinforced composite preform weaving and forming, specifically to an automated compaction device and method for weaving and forming three-dimensional preforms. The device comprises a guide array, upper and lower perforated plates, and a bidirectional steel frame. The weaving and forming method of this invention includes the following steps: designing the guide array and preform process parameters, and arranging the guide array; raising the upper perforated plate and inserting the steel frame to fix the guide array; and compacting the fibers layer by layer in the guide array to ultimately form a three-dimensional preform. Compared to existing technologies, this invention, by inserting a bidirectional steel frame, achieves automated needle alignment and preform densification compaction during the compaction process, thereby improving the automation level of the weaving process.

Description

Technical Field

[0001] This invention relates to the field of composite material preform weaving technology, specifically to an automatic compaction three-dimensional preform weaving device and method. Background Technology

[0002] Materials are the most fundamental link in the entire industrial chain, providing basic support for industries. Carbon fiber composites have received increasing attention and favor due to their advantages such as high strength, lightweight, and corrosion resistance. In recent years, the application of carbon fiber composites has been continuously expanding in fields such as sports and leisure, automobile manufacturing, industrial machinery, rail transportation, healthcare, and extended equipment.

[0003] Further developments in defense, aerospace, and other fields have created a demand for denser composite preforms, as denser geometric structures are beneficial for the stable performance of preforms. Existing flexible-guided three-dimensional weaving densification technologies for preforms involve significant manual intervention, making automated compaction during the weaving process difficult. This results in low efficiency and unstable preform quality. Therefore, a novel three-dimensional weaving method for composite materials needs to be developed. Summary of the Invention

[0004] Purpose of the invention: To solve the above problems, the present invention provides an automatic compaction three-dimensional preform weaving forming device and method, which solves the problem in the field of three-dimensional weaving where the top of the guide array is deformed due to fiber tension, thus making it impossible to achieve automatic needle alignment between the compaction plate and the guide array under existing forming technology.

[0005] Technical Solution: To achieve the above objectives, the automatic compaction three-dimensional preform weaving and forming device of the present invention includes a guide array, an upper perforated plate, a lower perforated plate, an X-axis steel sheet frame, and a Y-axis steel sheet frame; both the X-axis and Y-axis steel sheet frames are L-shaped, the X-axis steel sheet frame includes a first sheet and a second sheet perpendicular to the first sheet, and the Y-axis steel sheet frame includes a third sheet and a fourth sheet perpendicular to the third sheet, the first sheet and the third sheet are located on opposite sides of the guide array; the second sheet presses down on one side edge of the guide array from top to bottom, the third sheet presses down on the other side edge of the guide array from top to bottom, and the fourth sheet is stacked on top of the second sheet.

[0006] Furthermore, the spacing between the X-direction steel frame and the Y-direction steel frame is the same as the gap of the guide array.

[0007] The weaving and forming method of the automatic compaction three-dimensional preform weaving and forming device of the present invention includes the following steps:

[0008] a) Design the precast structure parameters based on the performance requirements of composite materials, and select the material type;

[0009] b) Based on the design of the precast structure, guide array and wire laying path are designed, the upper and lower perforated plates are attached, and guide array is arranged.

[0010] c) Raise the upper perforated plate to the upper end of the guide array with the allowance matching the required precast thickness, and insert the X-direction steel plate frame and Y-direction steel plate frame to fix the guide array;

[0011] d) Lay the fibers layer by layer in the guide array according to the design path, and keep the guide array vertical during the weaving process;

[0012] e) After the fibers are laid layer by layer in the guide array, the upper perforated plate and the X-direction steel frame and Y-direction steel frame are lowered to leave a margin for the next fiber laying process;

[0013] f) Adjust the position parameters of the top compaction plate, lower the top compaction plate, and complete the automatic needle alignment by matching the top tip of the guide array with the hole position;

[0014] g) After the precast body is compacted, the top compaction plate that was lowered is raised;

[0015] h) Repeat steps d), e), f), and g) until the weaving of the preform is complete.

[0016] Furthermore, the guide array is arranged according to the chamfers set on the upper and lower perforated plates respectively. The guide array achieves cooperation with the perforated plates through the chamfers, and the upper and lower perforated plates constrain the guide array to be vertical. The guide array is then arranged according to the layering information of the prefabricated body.

[0017] Furthermore, the position parameters of the top compaction plate are determined by the guide array arrangement parameters.

[0018] Furthermore, the verticality of the guide array is maintained by stacking the X-axis steel frame and the Y-axis steel frame vertically.

[0019] Furthermore, the allowance reserved for the next fiber laying process is determined by the fiber thickness parameter.

[0020] Furthermore, the filament is a man-made or natural filament such as carbon fiber, cotton or linen fiber, or resin filament.

[0021] Beneficial effects: Compared with the prior art, the present invention has the following significant effects: the fixing effect of the X-direction steel frame and the Y-direction steel frame on the guide array can prevent the deformation of the guide array caused by fiber tension; through the arrangement of the guide array and path planning, the integrated forming of multi-structure prefabricated bodies can be realized, improving the designability of composite materials. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall device of the present invention.

[0023] Figure 2 This is a schematic diagram of the main implementation parts of the method of the present invention.

[0024] Figure 3 This is a schematic diagram of the bidirectional steel frame configuration described in this invention. Detailed Implementation

[0025] This invention discloses an automatic compaction and forming device and method for three-dimensional prefabricated structures. Please refer to [link / reference]. Figures 1 to 3 As shown below, the automatic compaction three-dimensional precast body weaving and forming device provided by the present invention will be further described in detail: The automatic compaction three-dimensional precast body weaving and forming device includes a top compaction plate 1, an X-direction steel frame 2, a Y-direction steel frame 3, an upper perforated plate 4, a lower perforated plate 5, and a guide array 6. The X-direction steel frame 2 and the Y-direction steel frame 3 are both L-shaped. The X-direction steel frame 2 includes a first piece 21 and a second piece 22 perpendicular to the first piece 21. The Y-direction steel frame 3 includes a third piece 31 and a fourth piece 32 perpendicular to the third piece 31. The first piece 21 and the third piece 31 are located on opposite sides of the guide array 6. The second piece 22 presses down on one side edge of the guide array from top to bottom, and the third piece 31 presses down on the other side edge of the guide array 6 from top to bottom. The fourth piece 32 is stacked on top of the second piece 22. Simultaneously, the spacing between the X-direction steel frame 2 and the Y-direction steel frame 3 is the same as the spacing between the guide array 6.

[0026] The weaving method of the automatic compaction three-dimensional preform weaving device provided by the present invention will be further described in detail below: The weaving method of the automatic compaction three-dimensional preform weaving device includes the following steps: a) Design the preform structure parameters according to the performance requirements of the composite material and select the material type; wherein, the filament type is artificial or natural filament such as carbon fiber, cotton and linen fiber, and resin filament; b) Design the guide array 6 and the filament laying path according to the preform structure, attach the lower perforated plate 4 and the lower perforated plate 5, and according to the chamfers set on the upper perforated plate 4 and the lower perforated plate 5 respectively, the guide array 6 achieves the cooperation with the perforated plate through the chamfers, and the guide array 6 is constrained to be vertical by the upper perforated plate 4 and the lower perforated plate 5, and then arrange the guide array 6 according to the preform layer information; c) Raise the upper perforated plate 4 to the upper end of the guide array 6 with the allowance and the desired height. d) The prefabricated body thickness must match, and X-direction steel frame 2 and Y-direction steel frame 3 are inserted to fix the guide array 6; e) The fibers are laid layer by layer in the guide array 6 according to the design path, and the guide array 6 is kept vertical during the weaving process by the X-direction steel frame 2 and Y-direction steel frame 3 overlapping each other; f) After the fibers are laid layer by layer in the guide array 6, the upper perforated plate 4 and X-direction steel frame 2 and Y-direction steel frame 3 are lowered, and the allowance for the next fiber laying process is determined according to the fiber thickness parameters; g) The position parameters of the top compaction plate 1 are adjusted according to the arrangement parameters of the guide array 6, the top compaction plate 1 is lowered, and the automatic needle alignment is completed by the top tip of the guide array 6 cooperating with the hole position; h) After the prefabricated body is compacted, the lowered top compaction plate 1 is raised; g) Repeat steps d), e), f), and g) until the weaving of the prefabricated body is completed.

Claims

1. A weaving and forming method for an automatic compaction three-dimensional prefabricated body weaving and forming device, characterized in that, An automatic compaction three-dimensional prefabricated body forming device includes a guide array (6), an upper perforated plate (4), a lower perforated plate (5), an X-axis steel plate frame (2), and a Y-axis steel plate frame (3); the X-axis steel plate frame (2) and the Y-axis steel plate frame (3) are both L-shaped. The X-axis steel plate frame (2) includes a first piece (21) and a second piece (22) perpendicular to the first piece (21). The Y-axis steel plate frame (3) includes a third piece (31) and a fourth piece (32) perpendicular to the third piece (31). The first piece (21) and the third piece (31) are located on opposite sides of the guide array (6); the second piece (22) presses down on one side edge of the guide array from top to bottom, the third piece (31) presses down on the other side edge of the guide array (6) from top to bottom, and the fourth piece (32) is stacked on top of the second piece (22). The weaving and forming method includes the following steps: a) Design the precast structure parameters based on the performance requirements of composite materials, and select the material type; b) Based on the design of the precast structure, the guide array (6) and the wire laying path are designed. The upper perforated plate (4) is lowered to fit with the lower perforated plate (5), and the guide array (6) is arranged. c) Raise the upper perforated plate (4) to the upper end of the guide array (6) with the allowance matching the required prefabricated body thickness, and insert the X-direction steel plate frame (2) and Y-direction steel plate frame (3) to fix the guide array (6). d) Lay the fibers layer by layer in the guide array (6) according to the design path, and keep the guide array (6) vertical during the weaving process; e) After the fibers are laid layer by layer in the guide array (6), the upper perforated plate (4) and the X-direction steel frame (2) and Y-direction steel frame (3) are lowered to leave room for the next fiber laying process; f) Adjust the position parameters of the top compaction plate (1), lower the top compaction plate (1), and complete the automatic needle alignment by matching the top tip of the guide array (6) with the hole position; g) After the precast body is compacted, the top compaction plate (1) is raised and lowered. h) Repeat steps d), e), f), and g) until the weaving of the preform is complete; The guide array (6) is arranged according to the chamfers set on the upper perforated plate (4) and the lower perforated plate (5). The guide array (6) achieves cooperation with the perforated plate through the chamfers, and the guide array (6) is constrained to be vertical by the upper perforated plate (4) and the lower perforated plate (5). The guide array (6) is arranged according to the layer information of the prefabricated body. The verticality of the guide array (6) is maintained by the superposition of the X-direction steel frame (2) and the Y-direction steel frame (3). The fixing effect of the X-direction steel frame and the Y-direction steel frame on the guide array can prevent the deformation of the guide array caused by fiber tension. The allowance left for the next fiber laying process is determined by the fiber thickness parameter.

2. The weaving and forming method according to claim 1, characterized in that, The position parameters of the top compaction plate (1) are determined by the arrangement parameters of the guide array (6).

3. The weaving and forming method according to claim 1, characterized in that, The filament is carbon fiber, cotton or linen fiber, or resin filament.

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