公开(公告)号：US4856298A

公开(公告)日：1989-08-15

申请号：US234953

申请日：1988-08-22

申请人： Kakuji Maruyama ,  Takeshi Kondo ,  Yoshimitsu Okubo

发明人： Kakuji Maruyama ,  Takeshi Kondo ,  Yoshimitsu Okubo

IPC分类号： D04B15/32 ,  D04B15/82

CPC分类号： D04B15/82 ,  D04B15/32

摘要： A device for selectively lifting a multiplicity of needles which are mounted to an upstanding, rotatable cylinder for up and down sliding motion. Each needle has a shank with two butts formed in vertically spaced positions thereon, so that there are formed tow rows of such butts extending circumferentially of the cylinder. The upper one, for example, of the two rows of butts includes a group of butts that are longer than the other butts of the same row. Slidably supported adjacent the cylinder are a pair of cams which are independently moved, as by solenoids, toward and away from the cylinder and which have sloping cam surfaces for relatively sliding engagement with the respective rows of butts when the cams are thrusted toward the cylinder in rotation. The vertical distance between the sloping surfaces of the two cams is so determined in relation to that of the butts on each needle shank that when the upper cam is first moved toward the cylinder for lifting the needles having the longer butts by making relatively sliding contact therewith, the other cam can be subsequently moved toward the cylinder without being loaded by the lower butts of the needles being raised. Then, as the longer upper butts ride off the upper cam, the following needles will be raised as their lower butts ride onto the lower cam.

摘要翻译： 一种用于选择性地提升多个针的装置，其被安装到直立的，可旋转的气缸上以进行上下滑动。 每个针具有一个具有两个踵的柄，其上形成有垂直间隔的位置，使得在圆柱体的周向上形成有一排这样的踵。 例如，两排对接件中的上一个包括比同一行的其他对接件更长的一组对接件。 靠近气缸的可滑动支撑是一对凸轮，它们通过螺线管朝向和远离气缸独立地移动，并且当凸轮向着气缸推动时，这些凸轮具有倾斜的凸轮表面，用于与各排对接件相对滑动接合 回转。 两个凸轮的倾斜表面之间的垂直距离相对于每个针柄上的踵部的垂直距离是如此确定的：当上凸轮首先通过与其相对滑动接触而朝向气缸移动以提升具有较长屁股的针头 另一个凸轮随后可以朝向气缸移动，而不会被提升的针的下部踵加载。 然后，当较长的上部踵离开上部凸轮时，随着下部踵骑在下部凸轮上，下列针头将会升起。