专利名称：Detection of improper coating of sealing
composition on can end disks
发明人：Toshiharu Tsuchiya,Mamoru Iwata申请号：US06/545357申请日：19831025公开号：US04498415A公开日：19850212
摘要：Can end disks have annular, curled rims on which a sealing composition isapplied as a coat to form airtight seals when the end disks are subsequently attached tocan bodies. The sealing composition is sprayed onto the curled rim of each can end diskby an overlying spray nozzle while the disk is being rotated on a rotary rest in a coatingmachine. For detecting uncoated regions on the curled rim of the can end disk, aphotodetector is positioned over the rim of the disk on the rotary rest, with apreassigned angular spacing between the photodetector and the spray nozzle. Thedetection of uncoated regions is essentially concurrent with the application of the sealingcomposition. Since the output from the photodetector represents a nonfaulty uncoatedregion (i.e. a region not yet coated), in addition to a possible faulty uncoated region (i.e. aregion accidentally left uncoated), a signal generator such as a proximity detector isprovided for invalidating the photodetector output portion representative of thenonfaulty uncoated region. Any can end disk having a faulty uncoated region is rejectedwhile being subsequently conveyed toward the next processing station.
申请人：SHINRYOU SEIKAN KK
代理机构：Stevens, Davis, Miller & Mosher
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