Patent GB-1383799-A (GB)
Title: Ware reject apparatus for a glass ware forming machine or the like
IPC: B65G47/50
Filed: 1972-10-11
Abstract: 1383799 Glassware reject apparatus EMHART CORP 11 Oct 1972 [26 Oct 1971] 46797/72 Heading C1M. Glassware reject apparatus for a forming machine supplying articles from a plurality of moulds in series on a common output conveyer comprises sequencing means 12 having an input member, shaft 30 connected with the forming machine cam-shaft operating the pusher bar assemblies for depositing articles on the conveyer, for producing timing signals for each article from the plurality of moulds on the conveyer; selector means (14) connected to the sequencing means 12 and having a plurality of switches 100, 102, 104 corresponding to the plurality of moulds for transmitting selected timing signals from the sequencing means 12; and ejector means (16) connected by a solenoid 90 with the selector means and responsive to the timing signals transmitted by the plurality of switches for removing selected articles in the series from the conveyer. The apparatus is disclosed in connection with an eight section, triple mould I.S. forming machine. The ejector-mechanism 16 may be an electrically actuated, air-operated plunger assembly which pushes the rejected article, such as a bottle, off the output conveyer. The selector panel 14 is normally manually operated by the operator inspecting articles who wishes to reject malformed articles from a particular mould, but the switches 100, 102, 104 may be connected to an inspection device for automatic operation thereby. The sequence timer 12 comprises a support frame 20 adjustably mounted on a bracket 22 on the input shaft 30 by means of clamping bolts 24 and arcuate slots 26. Printed circuit boards 32, 34, 36 are fixedly held within frame 20 on shaft 30 and have a plurality of magnetically sensitive proximity switches 40, 42, 44 in circular arrays on the three boards. Rotor arms 50, 52, 54 are connected to shaft 30 to rotate over the boards 32, 34, 36 and each has a magnetic wand 60, 62, 64 overlying the switches 40, 42, 44 so that the switches open and close as the wand passes close thereto, so as to give a series of phased timing signals through a timing signal circuit. The switches 40, 42, 44 are spaced to correspond with the separation between individual sections of the forming machine and the switches 40, 42, 44 respectively correspond to the lead, second and third moulds of each section. The phase relations between the moulds of each section are adjustable by an adjuster 70 which has shafts 78 and 74 mounted over shaft 30 and connected respectively to rotor arms 54, 52, the shafts being rotatable by knobs 76, 74 and held in adjusted position by friction with a flange 80 on shaft 30. The control circuit, Fig. 4, is arranged so that the ejector mechanism 16 is operated by the closing of the proximity switch 40, 42, 44 but the timing signal is cut off a preselected interval after the solenoid 90 is actuated, to avoid overlong actuation of the plunger of mechanism 16, which might upset adjacent articles. The circuit is designed so that it will respond to each timing signal transmitted by the switches 100, 102, 104 even though the closure intervals of the proximity switches 40, 42, 44 provide overlapping timing signals.