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Process for making fiber reinforcement

机译:纤维增强工艺

摘要

A method of making a layered, one-piece fiber reinforcement (10) for a reinforced polymeric article, the method comprising: at least one fiber layer (54) having a surface that has aligned fibers in side-by-side contact with a coextensive layer of random Comprising fiber (52) comprising randomly oriented fibers; characterized in that a preselected number of aligned fibers (53 ') are conveyed from the aligned fiber layer (54) to the random fiber layer (52) such that the preselected number of fibers form loops (53') which form out of the plane of the reinforcement, the loops (53 ') being inserted into the random layer (52) to engage and interfere with at least some of the random fibers of the random layer (52) to provide the layer with aligned Securely bonding fiber (54) to the random fiber layer (52); the loops (53 ') being generally evenly distributed over the surface of the oriented fiber layer (54); the reinforcement (10) further comprising a second layer (50) with aligned fiber generally co-extensive with the first layer (54) with aligned fiber, the layer (52) with random fiber between and in contacting side- in side-by-side relationship with the first and second aligned fiber layers (50, 54) and in which a preselected number of aligned fibers from the first aligned fiber layer (54) is out of the plane of the first aligned fiber layer (54) Fiber is conveyed out and inserted through the random fiber layer (52) and at least into the second layer (50) with aligned fiber, and in which the aligned fibers from the first layer (54) with aligned fiber to the second layer ( 50) are conveyed with aligned fiber by: inserting a tool (56) in one location in the first aligned fiber layer (54), the tool (56) having at least one disposable fiber capture feature (58) that is oriented to engage at least one fiber at one point when withdrawn; thereafter advancing the tool (56) until at least the fiber capture feature (58) penetrates the second layer (50) of aligned fiber; thereafter reversing the direction of movement of the tool (56) to retract the tool (56) from the second layer (50) with aligned fiber so that the disposable fiber capture feature (58) includes at least one aligned fiber from the second layer (50) aligned fiber; the tool (56) is further retracted until it exits the first aligned fiber layer (54), thereby feeding the captured aligned fiber from the second aligned fiber layer (50) into the first aligned fiber layer pulling to insert the captured aligned fiber into the first aligned fiber layer (54); and relocating the tool (56) to another location and repeating the above steps until the predetermined number of fibers have been conveyed from the second aligned fiber layer (50) and inserted into the first aligned fiber layer (54).
机译:一种制造用于增强聚合物制品的层状单件式纤维增强材料(10)的方法,该方法包括:至少一个纤维层(54),其表面具有与共延伸纤维并排接触的排列的纤维包含随机取向纤维的随机包含纤维层(52);其特征在于,将预定数量的对准纤维(53')从对准纤维层(54)输送到无规纤维层(52),使得预定数量的纤维形成在平面外形成的环(53')。在增强材料的增强之后,将环圈(53')插入无规层(52)中,以啮合并干扰无规层(52)的至少一些无规纤维,从而为该层提供对齐的牢固粘结的纤维(54)到随机纤维层(52);环(53')通常均匀地分布在定向纤维层(54)的表面上;增强件(10)还包括具有取向纤维的第二层(50),该第二层(50)通常与具有取向纤维的第一层(54)共同延伸,具有无规纤维的层(52)之间并排并排接触。与第一和第二排列纤维层(50、54)的侧面关系,并且其中来自第一排列纤维层(54)的预选数量的排列纤维不在第一排列纤维层(54)的平面内并穿过无规纤维层(52)插入并至少插入具有取向纤维的第二层(50)中,并且将具有取向纤维的第一层(54)的取向纤维输送到第二层(50)中通过将工具(56)插入第一对准纤维层(54)中的一个位置,使工具(56)具有至少一个一次性纤维捕获特征(58),该至少一个一次性纤维捕获特征(58)被定向为与至少一根纤维接合。撤回时只扣一分;之后推进工具(56),直到至少纤维捕获特征(58)穿透对齐的纤维的第二层(50);然后反转工具(56)的移动方向,以使带有对齐的纤维的工具(56)从第二层(50)缩回,以便一次性纤维捕获部件(58)包括来自第二层的至少一根对齐的纤维( 50)对准光纤;工具(56)进一步缩回,直到它离开第一排列纤维层(54),从而将捕获的排列纤维从第二排列纤维层(50)馈送到第一排列纤维层中,从而将捕获的排列纤维插入到第一排列纤维层中。第一对准纤维层(54);然后将工具(56)重新放置到另一个位置,并重复上述步骤,直到从第二排列的纤维层(50)输送了预定数量的纤维并插入到第一排列的纤维层(54)中为止。

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