Patent
1974-04-09
1976-06-22
Lanham, C. W.
113 1G, 113120H, 113120S, B21D 5124
Patent
active
039644120
ABSTRACT:
This invention relates to a shaping device in a circulation system for producing a high pressure gas container by successively shaping a workpiece at a series of workstations. The device comprises a turn table, a plurality of holding frames, a series of drawing dies and an annealing means. The turn table is provided with a plurality of holding frames which are circumferentially arranged on said turn table at equally spaced distances and is adapted to turn in one direction and to stop alternately at each position of the holding frames. Each of the drawing dies comprises punch and a die combination whose dimensions gradually vary so that a bottomed steel cylinder can be successively drawn at each workstation and form a gas container having a narrow, thick opening. The drawing dies are installed in series right above the stop positions of the holding frames except the stop positions for mounting or charging, heating and demounting or discharging the steel cylinder. The heating means is positioned at the second stop position, after the first stop position at which mounting of the steel cylinder occurs or at any subsequent stop position where the workpiece may still be drawn. A ringed high frequency induction heater attached to the heating means is fitted right above the holding frame at the stop position for heating the workpiece. The bottomed steel cylinder material is mounted in and clamped to the holding frame and is gradually drawn into the shape of a gas container by the drawing dies in series.
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patent: 3606968 (1971-09-01), Loyd
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Crosby Gene P.
Lanham C. W.
Striker Michael J.
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