拉伸位置与拉伸力对皮革面积变化的影响探究

Study on the Influence of Stretching Position and Stretching Force on Leather Area

为解决目前皮革绷板干燥工序自动化、智能化程度不高,专用生产设备短缺的问题,文章通过搭建实验平台,设计正交实验,探究羊皮在绷板干燥工序中拉伸位置及拉伸力对皮革面积变化的影响,从而得到最佳的拉伸位置与拉伸力,为皮革自动绷板机的设计提供理论基础。通过将羊皮理想化处理,利用边缘依次画圆法确定出不同拉伸距离和拉伸点,并改变拉力大小,通过方差与极差分析表明,在垂直于皮革背脊线方向的拉伸点选取距离为9 cm,平行于皮革背脊线方向的拉伸点距离为12 cm时,为最佳拉伸点间隔距离;在垂直于背脊线的单个拉伸点受力为15 N时,平行于脊线的单个拉伸点受力为10 N时,为最佳拉伸力。

In order to solve the problems of low automation and intelligence in the leather toggling process and the shortage of special production equipment, it is imperative to set up an experimental platform and design the orthogonal test. This paper explored the influence of stretching position and stretching force of sheepskin on the leather area yields in the stretching drying process, which provides a theoretical basis for the design of automatic leather stretching machine. By idealizing sheepskin, the stretching distances and stretching points were determined by using the method of drawing circles on the edges, and the size of the stretching force was changed. Based on the variance and range analysis, the optimum stretching point spacing distance could be achieved when the distance of the stretching point perpendicular to the direction of the leather back line was 9 cm and the distance of the stretching point parallel to the direction of the leather back line was 12 cm. In this scenario, the best stretching force could also be obtained when the force on a single stretching point perpendicular to the ridge line was 15 N and the force on a single stretching point parallel to the ridge line was 10 N.