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1. 发明授权

US3913472A Strapping machine with short feed lockout 失效
标题翻译：捆扎机具有短的进料锁定
公开(公告)号：US3913472A
公开(公告)日：1975-10-21
申请号：US43238274
申请日：1974-01-10
申请人： FMC CORP
发明人： BUCK ERVILLE C
IPC分类号： B65B13/22 , B65B13/06
CPC分类号： B65B13/22
摘要： This machine straps a package with flexible tape strapping. A strap is initially fed by feed and tension wheels around the yoke and against a stop with which a gripper clamps the free end of the strap against an anvil, the feed is reversed to remove a slack loop in the strap at the feed mechanism and the feed mechanism is automatically stopped. Thereafter, a tensioning valve is operated to reactivate the feed mechanism so as to slip the strap out of the yoke, tension the strap around the package and join the ends of the strap after tensioning. Occasionally the apparatus malfunctions to produce a short feed, wherein during the initial feeding operation, the strap does not reach the gripper so that even though the gripper closes against its anvil, when the feed mechanism is restarted to tension the strap, the strap is pulled out of the yoke, instead of being tensioned around the package and hence must be rethreaded. To prevent this, an air orifice is provided at the gripper anvil which orifice is not covered by the free end of the strap when the aforesaid short, feed malfunction occurred, and the gripper was closed and this short feed condition prevents restarting of the feed mechanism in the tensioning direction when the aforesaid valve is operated to initiate tensioning. Thus, the strap is not withdrawn from the yoke and after the obstruction is cleared the strap need not be re-threaded through the machine.
摘要翻译：该机器带有一个带有柔性胶带的包装。带子最初由馈送和张紧轮围绕轭架供给，并且靠着止动器，夹持器将带子的自由端夹在砧座上，反馈物料以在进给机构处移除带子中的松弛环，并且进给机构自动停止。此后，操作张紧阀以使进给机构重新启动，从而将带从棒中滑出，将带张紧在包装上，并在张紧之后连接带的端部。偶尔，设备发生故障以产生短的进给，其中在初始进给操作期间，带不会到达夹具，使得即使夹持器关闭其砧座，当进给机构重新启动以张紧带时，带被拉动摆脱轭，而不是在包装周围张紧，因此必须重新布线。为了防止这种情况，在夹持器砧座处设置有空气孔口，当前述短暂的进给故障发生时，该孔口不被带的自由端覆盖，并且夹持器被关闭，并且该短的进给状况阻止了进给机构的重新启动当上述阀被操作以启动张紧时在张紧方向上。因此，带子不会从轭架中退出，并且在障碍物被清除之后，带子不需要重新穿过机器。

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