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    • 1. 发明申请
    • VARIABLE MOLD APPARATUS FOR FORMING STRETCH SHEETS AND A STRETCH SHEET FORMING METHOD
    • 用于形成拉伸片的变形模具和拉伸片形成方法
    • WO2009145538A2
    • 2009-12-03
    • PCT/KR2009002763
    • 2009-05-25
    • PUSAN NAT UNIV IND COOP FOUNDKANG BEOM-SOOKU TAE-WANKIM JEONGSONG WOO-JINKO JONG-MIN
    • KANG BEOM-SOOKU TAE-WANKIM JEONGSONG WOO-JINKO JONG-MIN
    • B21D13/00
    • B21D11/02B21D25/02
    • The present invention relates to a variable mold apparatus for forming stretch sheets, which comprises: a multiplicity of forming punches arranged underneath a sheet; at least one forming jig fixed to the end of the sheet; and at least one hydraulic press for applying tension to the forming jig. Particularly, in a variable mold apparatus for forming stretch sheets according to the present invention, each forming punch comprises a punch head, a hollow outer member having screw threads on the internal surface thereof and an inner member having external screw threads to be insertedly fastened to the outer member, with one of the outer and inner members being connected to the punch head and the other being connected to a rotation axis, and the apparatus further comprises at least one punch-adjustment motor capable of providing a torque in gear with the rotation axis of the respective forming punch. Advantages of the thus configured apparatus of the present invention are that a variety of die profiles can be produced by combining multiple forming punches in one single apparatus without necessarily producing a number of profile dies for various purposes and thus a stretch forming process can be executed in a simple and efficient manner.
    • 本发明涉及一种用于形成拉伸片材的可变模具装置,其包括:布置在片材下方的多个成形冲头; 至少一个固定在片材端部的成形夹具; 以及用于向成形夹具施加张力的至少一个液压机。 特别地,在根据本发明的用于形成拉伸片材的可变模具装置中,每个成形冲头包括冲头,在其内表面上具有螺纹的中空外部构件和具有外螺纹的内部构件,该内部构件插入地紧固到 所述外部构件具有外部构件和内部构件中的一个连接到所述冲头并且另一个连接到旋转轴线,并且所述装置还包括至少一个冲头调节马达,其能够提供与所述旋转 轴的相应成形冲头。 这样构成的本发明的装置的优点在于,可以通过在一个单一装置中组合多个成形冲头来生产各种模具型材,而不必为了各种目的而产生多个型材模具,因此可以在 一个简单有效的方式。