| 摘要 |
1299951 Moulding gramophone records RCA CORPORATION 13 Feb 1970 [25 Feb 1969] 7001/70 Heading B5A Automatically operated apparatus for the production of gramophone records includes a moulding press with platens 36, 38 to which a measured quantity of mouldable material 52 with upper and lower adhered labels is fed by a mechanism which releasably grasps the material. The latter is extruded from a nozzle 54 into a cup 56 comprising half-ring parts which pivots to feed the preform to a position axially aligned with label magazines 68, 76. The lower magazine is raised whereby a central pin 66 and a lower label engages the preform whereupon the cup is opened, the magazine lowered and the cup returned to its filling position. The magazines are then moved towards each other and an upper label is applied to the preform which is pierced by a central pin 78 of the upper magazine. The thus formed sandwich is engaged by a pair of opposed grippers 100, 102 mounted on a carriage 26 reciprocally movable on rods 94, 96. The grippers are moved inwardly by pneumatic cylinders 104, 106 to penetrate the sandwich after which the magazines retract and the carriage moved to feed the sandwich between the opposed press platens. The lower platen is raised to a partially press closed position and latches on the grippers 100, 102 are engaged by pins 140, 141 Fig. 4 on the platen whereby the grippers are spring-urged away from the sandwich; such partial closure brings pins 136, 138 on the platens into the preformed holes in the sandwich. Each platen includes heat transfer moulds 44, 46 with passages for steam and cold water flow to which are clamped stampers 48, 50. The carriage 26 carries opposed gripping members 108, 110 which engage the peripheral flash of a moulded record and the arrangement is such that when the carriage is moved to deliver a sanwhich to the press the flash grippers convey a moulded record from the press to a record edging and flash cutting station. At this station a turntable 118 is raised to receive the record from the then opened flash grippers after which the turntable is lowered and pivoted to sandwich the record between the turntable 118 and a motor driven turntable 112 associated with a radially movable cutter knife 116. On retraction of the turntable 118 after the trimming operation the record drops into storage means. When a record has been released by the flash grippers the carriage is returned to bring the grippers to a position between the press platens to engage the subsequently formed flash. The lower platen is then moved upwardly by an hydraulically operated piston 42 to mould the record.
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