摘要:
Dispositif de compactage (100) pour machine d'enroulement d'une texture fibreuse sur un mandrin d'imprégnation, comprenant un châssis (102) sur lequel sont montés un rouleau de compactage (104) destiné à venir en appui contre la surface extérieure d'un mandrin d'imprégnation d'une machine d'enroulement, et deux galets de compactage (106) destinés chacun à venir en appui contre un angle formé entre la surface extérieure et un flasque latéral du mandrin d'imprégnation.Le dispositif comporte en outre des moyens (112) de mise en vibration du rouleau et des galets de compactage, et des moyens de réglage de la position reltaive du rouleau de compactage par rapport au châssis, le rouleau de compactage (104) étant monté de façon rotative entre deux platines (114) solidaires du châssis, chaque platine ayant une extrémité qui est solidaire en rotation d'une roue dentée (116) apte à pivoter autour d'un axe horizontal par rapport au reste du châssis (118) par engrènement d'une vis sans fin (120) de façon à assurer un régalge de la position relative du rouleau de compactage par rapport au châssis.
摘要:
The invention relates to a machine for winding a fibrous material on an impregnation mandrel, including an uptake mandrel for storing and dispensing the fibrous material (18), an impregnation mandrel (30) for receiving the fibrous material, a camera (46) for monitoring the passage of tracing warp yarns (50, 52, 54, 56, 58) and weft yarns (64), an image analysis module (47) for determining the positions of the intersections between sequential tracing warp yarns and tracing weft yarns, and comparing said determined positions with corresponding positions of intersections of reference tracing warp and weft yarns (66) and determining an off-centering value of the fibrous material for each of said intersections, electric motors (22, 34) for rotating the mandrels, and an electric motor control unit (42).
摘要:
The invention relates to a device for producing a part from a composite material, by injecting resin into a fibrous structure (28), said device comprising: a first matrix having two adjacent support surfaces defining therebetween a re-entering angle (A); a shim (110) including a corner portion (115) configured to force the fibrous structure into the re-entering angle; and a second matrix (130) that can move in relation to the first matrix, said matrices being configured to grip the fibrous structure and the shim. The shim is connected to the second matrix by at least one connecting rod (150) that is hinged to the second matrix and to the shim, such as to guide the corner portion towards the re-entering angle in order to force the fibrous structure into said angle when the second matrix moves towards the first.
摘要:
Machine (10) for winding a fibrous texture onto an impregnation mandrel, comprising a take-up mandrel (14) on which a fibrous texture (18) is intended to be stored, the take-up mandrel having an axis of rotation (20), an impregnation mandrel (16) around which the fibrous texture stored on the take-up mandrel is intended to be wound in superposed layers, the impregnation mandrel having an axis of rotation substantially parallel to the axis of rotation of the take-up mandrel, at least one electric motor (22, 34) for rotating the mandrels about their respective axis of rotation, and a control unit (36) of the electric motor or motors for rotating the mandrels.
摘要:
Compacting device (100) for a machine for winding a fibrous texture onto an impregnation mandrel, comprising a frame (102) mounted on which are a compacting roll (104) intended to bear against the outer surface of an impregnation mandrel of a winding machine, and two compacting rollers (106) each intended to bear against an angle formed between the outer surface and a lateral flange of the impregnation mandrel.
摘要:
The invention relates to a machine for weaving (10) or winding (20) a fibrous preform (28) onto a mandrel having a substantially horizontal axis of rotation (30) and intended to accept same, comprising a plurality of cameras (42) aimed under the fibrous preform in order to scrutinize the hidden face of the fibrous preform and capture images of this hidden face; an image analysis module (40) for processing these images of the hidden face of the fibrous preform, in a number of adjacent scrutinizing windows, extract weaving patterns therefrom and compare same against reference weaving patterns prerecorded in the module; a motor (34, 36) for driving the mandrel in rotation about the axis of rotation of same; and a control unit (40) for halting the rotation of the mandrel if the result of the comparison reveals, in at least one scrutinizing window, a difference in appearance between these two weaving patterns that is characteristic of the presence of an anomaly resulting from contamination in and/or defective weaving of the fibrous preform.