| 摘要 |
1,216,003. Moulding machines. E. P. MOSLO. 25 Jan., 1968 [30 Jan., 1967], No. 3888/68. Heading B5A. A moulding machine, e.g. for injection moulding, has fixed and movable mould clamping platens 14 and 22 respectively, brought together by a first, relatively low pressure, fluid motor comprising a fixed piston 40a and a movable cylinder 64 to which the movable platen is coupled, after which a second, relatively high pressure, fluid motor comprising a fixed cylindrical chamber 84 and a movable piston 86, is clamped to the first motor to provide a high pressure mould closing action. The hollow piston-rod 40b of the fixed piston is attached to a plate 46 secured to a fixed support 12, and the surrounding cylinder 64 slides on a sleeve 50 surrounding the rod and has threads 66 therealong whereby the motors are clamped together. The piston 86 is secured to a member 92 transversely bored to slidably receive an opposed pair of jaws 102 which can be urged towards and away from the cylinder 64 by a piston and cylinder drive 104, 106. The inner ends of the jaws are correspondingly threaded so that when the mould parts 24, 24a supplied by injection means 36a, 38 are brought together by the platen 22 the jaws are actuated to engage the threaded cylinder whereupon the second motor 84, 86 is actuated. The member 92 and platen 22 are guided on tie bars 16 extending between the support 12 and platen 14. A ring 126 threaded to the cylinder 64 can adjust the relative positions of the cylinder and member 92 to ensure engagement of the jaw and cylinder threads. A mould stripper mechanism includes a plate 138 with extensions 140 reciprocated by a fluid motor unit 142.
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