BOX-SHAPED PART MOLDING METAL DIE DEVICE AND MOLDING METHOD

PURPOSE:To improve dimensional accuracy of a box-shaped molded part by reducing a spread due to a warp in a rise up part generated in the case of molding, in a metal die for molding the box-shaped molded part. CONSTITUTION:A piston 6 for generating a fluid pressure is mounted on a wrinkle retainer 2...

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Bibliographische Detailangaben
Hauptverfasser:	UMEHARA HARUO, TANSHIN MASAYA
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS ELECTRICITY MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL PERFORMING OPERATIONS PUNCHING METAL TRANSPORTING WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL
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Beschreibung
Zusammenfassung:	PURPOSE:To improve dimensional accuracy of a box-shaped molded part by reducing a spread due to a warp in a rise up part generated in the case of molding, in a metal die for molding the box-shaped molded part. CONSTITUTION:A piston 6 for generating a fluid pressure is mounted on a wrinkle retainer 2 and made slidable to a vertically arbitrary position, and a skirt of a shadow mask can be erected by applying additional tension. As a result, the shadow mask, reducing a spread of the skirt with a stable spread amount, is obtained.