公开(公告)号：US4140072A

公开(公告)日：1979-02-20

申请号：US818560

申请日：1977-07-25

申请人： Arthur A. Bartling ,  James J. Lambrecht ,  Patrick M. Lynch

发明人： Arthur A. Bartling ,  James J. Lambrecht ,  Patrick M. Lynch

IPC分类号： B21D51/38 ,  B21D43/00

CPC分类号： B21D51/383

摘要： A can lid forming apparatus includes means for attaching a can opening key. A proximity field sensor is mounted in a doming die of the apparatus and generates a pulse logic signal as a can lid with a staked key is formed by the doming tool. A timing disc rotates in synchronism with each cycle of the tool and generates a pair of logic signals. A key monitor circuit is connected to respond to the signals to establish a latch, check latch and reset latch sequence for each cycle of the tooling. If the latch is not set, an appropriate output signal is generated indicating a key is missing from the lid. If the latch is not reset after being set, indicating a build-up of aluminum fines or the like on the probe, an appropriate signal is generated by a preconditioned probe monitoring curcuit. The latter is connected to respond to the pulse logic signal and the reset signal to continuously check on the generation of the output pulse of the probe and produce a stop or alarm output if the logic pulse signal is not formed; indicating a sensor malfunction of the absence of the key.

摘要翻译： 罐盖形成装置包括用于安装罐头开启钥匙的装置。 邻近场传感器安装在装置的拱形模具中，并且通过拱形工具形成具有放样键的罐盖的脉冲逻辑信号。 定时盘与工具的每个周期同步旋转，并产生一对逻辑信号。 连接关键的监视器电路以响应信号以建立锁存器，检查锁存器和复位每个工具周期的锁存顺序。 如果未设置锁存器，则会产生适当的输出信号，指示盖子中缺少钥匙。 如果锁定器在置位后未复位，表示探针上的铝粉等的积聚，则通过预处理的探头监测电路产生适当的信号。 后者连接以响应脉冲逻辑信号和复位信号，以连续检查探针的输出脉冲的产生，并且如果没有形成逻辑脉冲信号则产生停止或报警输出; 表示没有钥匙的传感器故障。