| 摘要 |
1,195,677. Blow-moulding. HOOVER BALL & BEARING CO. 12 May, 1969, No. 24192/69. Heading B5A. Blow-moulding apparatus comprises a plurality of mould halves 18 defining cavities in which articles 76 are formed having tail flash 22. They are gripped and removed therefrom by gripping assembly 26 comprising vertically reciprocable rod 46 having spring fingers 54 operated hydraulically through shaft 28 and rack and pinion mechanism 36, 38. The articles are lowered into nests 74 on frame 70 reciprocated by cylinder 64 from the position as shown in solid lines in Fig. 4 to the position shown in dotted lines in Fig. 4 where flash 22 is removed by means of further leftward movement of frame 70, flash 22 being held between stop 80 and bar 84 on rod 88 of hydraulic cylinder 86 which is extended before deflashing and yields under movement of frame 70. At this second position, articles 76 are pushed into fingers 26, Fig. 1, of transfer means comprising a continuous chain 94 intermittently driven from motor (104, Fig. 5, not shown) through geneva mechanism (110, 112) and gears (116, 118) and sprocket 98. Here, the articles are transferred to finishing means 126, Fig. 7, which trims the upper ends of the articles. This comprises rotary cutters 158 driven from motor 150 and reciprocated vertically into and out of the articles 76 through spline shaft 109, also driven from motor (104) and carrying a barrel cam 130 having a cam slot 132 which, on rotation, reciprocates assembly 140 by means of cam follower 134. Particles are blown from the articles 76 by air supplied through air pin 160 reciprocated by air cylinder 162. Fluid circuitry (Fig. 8, not shown) and electrical circuitry (Fig. 9, not shown) are described.
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