Advanced high speed form processing with respect to a multiple-layered flexible thin sheet

采用本基金引进的高速摄像机对厚纸板与AC树脂厚板的切割运动监测及不完全分离状态诊断进行了监测。研究了交流厚板的一些开裂模式，剪切性能与冲孔速度和间隙有关。最近的研究表明，考虑重叠间隙时，交流板的开裂模式是可以控制的。利用超声振动对楔形叶片进行激励，并在几种指定的激励模式中选择激励模式，可提高PC树脂片材剪切轮廓的稳定性。利用楔形叶片的超声振动激活交流厚板的部分熔化区。这种现象有利于厚板材的稳定切割。然而，其最优条件尚未得到揭示。利用所介绍的高速摄像机，可以对卡片掉落运动进行分析。这对于了解动态行为很有用……更多的卡碰撞到计数器地板。针对波纹纤维板结构的变形特性，提出了一种新的力学性能模型——组合模型。该组合由正交各向异性弹性衬垫（基于平面内拉伸试验）和各向同性弹塑性介质（基于环压试验）组成。利用该模型，用有限元程序对三维旋转压痕进行了分析。该模拟结果与基准实验结果相似，内层和介质的偏转。针对脆性树脂模型和柔性橡胶模型，建立了曲线拟合非线性弹性模型和基于模式的开裂模型（VCCT）。对叶片对工作板的浅压痕进行了数值分析，其结果较好地解释了试验裂纹行为。为了切割PET薄膜（厚度为15um， 25um）而不破坏刀边，在原模组（新的模具结构）上设计并实现了几种波形刀片。它的切割性能将在各个车间进行展示。少

Monitoring of cutting motion and diagnosis of imperfect separation stateShearing process of thick paperboard and AC resin thick sheet was monitored using the high speed camera introduced by this fund. Some cracking patterns of AC thick sheet were revealed and the shearing performance depended on the punch velocity and the clearance. It is recently revealed that the cracking patterns of AC sheet are able to control when the overlapping clearance is considered. When a wedge blade is excited by the ultrasonic vibration, and its excitation mode is chosen from several specified patterns, the stability of sheared profile of PC resin sheet is increased. Partially melted zone of AC thick sheet is activated by using the ultrasonic vibration of a wedge blade. This phenomena is superior for stably cutting the thick sheet. However, its optimal condition is not revealed yet. Using the introduced high speed camera, a card dropping motion can be analyzed. This is useful for knowing a dynamic behavior … More of the card collided to acounter floor.SimulationRegarding the deformation characteristics of a corrugated fiberboard structure, a new mechanical properties model called as the combination model was introduced. This combination is composed of an orthotropic elastic liners (based on In-plane tensile testing) and an isotropic elasto-plastic medium (based on Ring Crushed Test). Usingthis model, three dimensional rotary creasing was analyzed using an FEM code. This simulation result was similar to a bench marked experiment with respect to the deflection of inner liner and medium. Regarding a fragile resin and a flexible rubber models, we have developed a curve-fitting non-linear elastic model and a pattern based cracking model (VCCT). Shallow indentation of blade to the worksheet was numerically analyzed and its results fairly explained about the experimental cracking behaviors.A new method: development of thin film form cutting dieIn order to cut off a thin PET film (a thickness of 15um, 25um) without any crushing of cutter edge, several waveform blades were designed and implemented to an original die set (a new die structure). Its cutting performance is going to be presented in various workshops. Less