Patent GB-1360246-A (GB)
Title: Machine for processing glass
IPC: C03B9/12
Filed: 1971-10-22
Abstract: 1360246 Glass processing machine OWENSILLINOIS Inc 22 Oct 1971 [22 Oct 1970] 49168/71 Heading C1M A glass article processing machine, particularly for finishing the rims of hollow glass articles, 9, as by heating, quenching and cooling at zones B, C and D comprises an endless conveyer 21, a plurality of work-supporting heads 45 pivotally mounted at spaced intervals along the conveyer 21 for swinging movement about a generally horizontal axis 47 parallel to the conveyer, a support 59, rotatably mounted in each head 45, with an opening therethrough and means 62 for circumferentially engaging and supporting a single glass article 9 such that both ends of the article are exposed and the article is vertical in the normal, horizontal, position of the head 45; means, such as drive chains 65, 75 engaging a sprocket 60 on each support 59, to rotate the supports as the conveyer moves; and means such as guide bars 52, 54 engaged by rollers 51, 53 on arm 50 extending from each head 45 for holding each head substantially horizontal along a major portion of the path of the conveyer 21 through zones A, B, C, D and E the bars 52, 54 including downwardly and then upwardly curved portions 52a, 54a for pivoting each head 45 about its axis 47 to a substantially vertical position over a limited portion at zone F of the path, so that broken articles not removed at the normal position E or fragments of glass can be ejected. Conveying and holding apparatus, Figs. 4 and 6.-Conveyer chain 21 mounted on base 20 has rollers 26 guided between rails 27, 28 and a plurality of wheels 29 engaging a track 29a, the wheels 29 being mounted on brackets 30 swivelling about horizontal axes. Carriages 35, each of which supports a number of heads 45, are each connected by a flat sheet metal body 36 to an upright pin 37 on chain 21 and include upper and lower sheet metal supports 40, 41 mounted on body 36 by mounts 42, 43. Wheels 44 mounted on the inclined surfaces of supports 40, 41 engage opposite surfaces 32, 33 of track rails 31, 34 on base 20. Each head 45 includes spaced laterally extending arms 46 each with a pin 47 extending through aligned openings 48 of brackets 49 on the carriage 35 so that each head is readily removable. Each head 45 comprises a support 59 held between flanges 57, 58 on spaced sheet metal plates 55, 56 and having an annular sprocket member 60 fixed thereto and extending between plates 55, 56, the sprocket 60 having teeth 61 engaging chain 65 on chain 75 to rotate the head 45 in zones B, C and zone D respectively. The support 59 has an internal tubular sleeve 62 with inwardly projecting portions 63 to receive and engage the glass article G at circumferentially spaced points. Hold down mechanism, Figs. 12, 12a.-During heating in zone B, a hold down member 80 engages by pad 82 the top of the article 9. Each member 8 comprises a rod spring pressed downwardly and supported on a carrier 81 comprising pairs of links 83, 84 pivoted to one another by shafts 85 on which are mounted rollers 86. Each link 83 supports a body 87 on one side 89 of which the rod 80 is guided by flanges 103, a washer 105 limiting downward movement of rod 80 which is surrounded by spring 104. The carriers 81 are guided by rollers 86 engaging bar 96 which is also engaged by upstanding lugs 95 on links 84 and rollers 91 on the side walls 90 of body 87 engage guide members 102 leading to a guide bar (99) which gradually guide each carrier downwards towards the articles and upwardly at the end of the hold down period. The hold down pad 82 may include a removable pad (106) with a layer of low friction material (108) to engage the glass, such as graphite or a rubberized asbestos fabric. Heating, quenching and cooling zones, Figs. 3 and 12.-The heating zone B comprises a plurality of burners 109 in groups each mounted on a manifold (110) on arms (111) pivoted on shaft (112) so that each bank of burners 109 can be swung into and out of operative position. To prevent impingement of flames on other parts of the apparatus, hollow, water cooled, sheet metal panels 150 are provided, 150a, 150b in front of the main conveyer and 150c, 150d beneath the hold down carriers 81. At the quenching zone C the heated edge of the article 9 passes through a plenum chamber 125 with longitudinally extending slots 126a and 126b at each side and inwardly and upwardly extending slots 126c which direct cooling air against the outside and inside of the open end of the article 9. At the cooling zone D, lower and upper plenum chambers 125a, 125b direct air on to the article 9 through slots 126d, 126e. Clearing zone, Fig. 16.-At zone F, each head 45 swings downwardly so that any glass left in the tubular sleeve 62 can be ejected. This is assisted by air jets from nozzles 127 and/or by a push out bar 128 in advance of the nozzles. Automatic means are also disclosed for taking up slack in chain 21. Specification 1,338,448 is referred to.