用于含 Z 向钢针立体织物的钢针置换夹持器设计

为解决人工逐根置换钢针以及传统夹持器在工作过程中存在的不足，设计了适用于钢针置换的专用钢针夹持器。该装置由楔形滑块、薄壁弹性夹持器等组成，通过楔形滑块对薄壁弹性夹持器产生压力使薄壁楔形夹持器发生弹性形变，转化为薄壁楔形夹持器对钢针的压力，以满足夹紧钢针的要求。这种专用钢针夹持器自动化程度高，定位精准，能快速实现夹紧与松弛；并对钢针夹持器工作过程进行受力分析，以保证钢针置换工作可靠、持续进行。为验证工作原理的可行性，设计了夹持置换钢针实验，结果表明，钢针夹持器原理可行，工作可靠，可达到使用要求。

Design and experimental study on steel needle gripper of replacement of Z directional steel needles in three-dimensional fabric

In order to overcome the defect of manual replacement of steel needles and the defect of conventional gripper during the operation process, a special steel needle gripper for the replacement of steel needles was designed. The device comprises a wedge block, a thin walled elastic gripper, etc., and the pressure of the wedge block on the thin walled elastic gripper causes the elastic deformation of the thin walled elastic gripper, which is converted into a pressure on the steel needle, meeting the requirements of gripping steel needles. The special steel needle gripper has a high degree of automation and accurate positioning, and can quickly achieve gripping and relaxation. By the force analysis of the working process of the steel needle gripper, it guarantees that the replacement of steel needle is reliable and continuous. In order to verify the feasibility of the working principle, an experiment for the gripping replacement of steel needle was designed. The result shows that the steel needle gripper has feasible principle and reliable operation.