摘要:
The disclosure provides a multi-dimensional weaving shaping machine of composite materials, including: a guide template including a plurality of cylindrical guiders arranged according to the geometrical shape of a prefabricated member; an electrical control three-dimensional motion mechanism including: a control signal receiving terminal configured to receive motion control signals corresponding to the geometrical shape of the prefabricated member; and a three-dimensional motion output terminal configured to form a motion track according to the motion control signals; a weaving needle being connected with the three-dimensional motion output terminal and making weave fibers distribute among the cylindrical guiders according to the geometrical shape of the prefabricated member. The multi-dimensional weaving shaping machine of composite materials of the disclosure utilizes the cylindrical guiders and the electrical control three-dimensional motion mechanism to make the weaving needle to drive braided cords to distribute among the cylindrical guiders along the motion track to form the guide template. The disclosure is applicable to multi-dimensional weaving shaping of large-scale and complicated materials and capable of improving the interlaminar strength of composite materials. The shaping machine applies a rapid shaping technology to multi-dimensional weaving shaping of composite materials and the technical processes are automatic.
摘要:
A method of preparing articles of aetzed embroidery is provided which includes stitching embroideries on a backing of thermoplastic material to form composites, with the backing being either a continuous web or individual sheets. The composites are fed into juxtaposition with a transfer strip having a first side thereof to which the thermoplastic backing material will readily adhere. The composites and the transfer strip are pressed together and heat is simultaneously applied to bring the thermoplastic backing material to its fusing temperature so that the portion thereof covered by the embroideries adheres to the embroideries, and the excess portion of the thermoplastic backing material not covered by the embroideries fuses and adheres to the first side of the transfer strip. Thereafter, the transfer strip and the aetzed embroideries are separated in such a manner that the aetzed embroideries have a thermoplastic backing material adhered thereto, and the excess portion of the thermoplastic backing material remains on the transfer strip.In a preferred embodiment, the articles of aetzed embroidery are prepared with an adhesive coating on one side thereof and the articles are mounted by the adhesive coatings on a carrier strip for storage thereon and ready removal therefrom. The above-described method is modified to juxtapose a carrier strip having a layer of thermoplastic adhesive on one side thereof with the transfer strip and the embroidery composites are disposed therebetween. Upon application of heat and pressure, the thermoplastic adhesive and the thermoplastic backing material are fused so that the backing material and adhesive covered by the embroideries adheres to the embroideries, and the excess portions not covered by the embroideries adhere to the first side of the transfer strip.
摘要:
A three dimensional braid includes a plurality of first plaits adjacent one another oriented in a first direction and a plurality of second plaits adjacent one another oriented in a transverse second direction intertwined forming a braid with each first plait intersecting each of the plurality of second plaits in succession. Each first plait includes a first group of tows and a second group of tows, each of the tows in the first group of tows corresponding to one of the tows in the second group of tows in pairs of first plait tows. Each second plait includes a plurality of tows. For each first plait, one of the first plait pairs crosses over a subset of second plait tows at each intersection of the first plait and successive second plaits forming a series of braid points along the first plait.
摘要:
A three dimensional braid includes a plurality of first plaits adjacent one another oriented in a first direction and a plurality of second plaits adjacent one another oriented in a transverse second direction intertwined forming a braid with each first plait intersecting each of the plurality of second plaits in succession. Each first plait includes a first group of tows and a second group of tows, each of the tows in the first group of tows corresponding to one of the tows in the second group of tows in pairs of first plait tows. Each second plait includes a plurality of tows. For each first plait, one of the first plait pairs crosses over a subset of second plait tows at each intersection of the first plait and successive second plaits forming a series of braid points along the first plait.