Preparation method of box-shaped reinforced three-dimensional fabric preform
A technology of three-dimensional fabrics and prefabricated bodies, applied in textiles and papermaking, hand sewing, sewing equipment, etc., can solve problems such as poor corner forming effects, achieve structural stability, increase fiber volume content, and flexible use
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[0019] The preparation method of the box-shaped reinforced three-dimensional fabric prefabricated body designed by the present invention adopts the following process steps:
[0020] Step 1. First, lay the fiber layer of the small box prefabricated part, take the cut fiber cloth, and lay the layer along the specified direction. After reaching the required thickness, clamp it with a clamp; use sewing equipment to sew it at the central position, and then sew it along the rear edge Place the mold on the side and fix the position of the mold; cut the fiber cloth along the horizontal direction (from the fracture to the stop of the mold), and along the side edge direction, attach the fiber cloth to the mold and connect the fracture, and fix it with sutures; repeat the above process , Laying all four small box molds is completed;
[0021] Step 2. Splice four small box prefabricated parts to form a large box, and put fiber bundles in the middle gap to ensure the mechanical properties o...
Embodiment 1
[0027] Adopt sewing method of the present invention and shaping die to make a bottom size and be the square fiberglass prefabricated part of 210 * 210mm, specific requirement is: (1) the thickness of prefabricated part bottom and the thickness of four side walls are 5mm; ( 2) The height of the side wall is 50mm; (3) The suture stitch distance is 6.5mm; (4) The suture line spacing is 10mm; (5) The ply angle is 0°.
[0028] Step 1. First, carry out the fiber laying of the square box prefabricated parts, cut the fiber cloth with a size of 260×260mm, cut a total of 26 pieces, lay the laying along the 0° direction, and clamp it with a clamp after the laying is completed; Select a square area of 95×95mm in the center of the seam for stitching, and then place a hollowed-out square box mold without a cover along the stitching edge (such as Figure 1-2 ) and fix the position of the mold; cut the fiber cloth along the horizontal direction (from the fracture to the mold stop), and alon...
Embodiment 2
[0033] Adopt sewing method of the present invention and shaping mold to make a bottom diameter and be the cylindrical fiberglass prefabricated part of 210mm, specific requirement is: (1) the thickness of prefabricated part bottom and the thickness of four side walls are 5mm; (2) ) The height of the side wall is 50mm; (3) The suture pitch is 5mm; (4) The stitch row spacing is 5mm; (5) The ply angle is 0°.
[0034] Step 1. First, lay up the fiber layer of the arc prefabricated part, cut 1 / 4 arc glass fiber cloth with a diameter of 260mm, cut a total of 26 pieces, lay the layer along the 0° direction, and clamp it with a clamp after laying; Use suture equipment to select a 1 / 4 arc area with a diameter of 95mm at its central position for suture, and then place a hollowed-out arc mold without a cover along the suture edge (such as Figure 2-2 ) and fix the position of the mold; cut the fiber cloth along the horizontal direction (from the fracture to the mold stop), and along the di...
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