| 摘要 |
PURPOSE: A method for automatically manufacturing decorative small metal bells is provided, which reduces manufacturing cost and maximize productivity by simultaneously molding bell body, knob and weight composing the decorative small metal bells in a press and automatically assembling the molded bell body, knob and weight in the press. CONSTITUTION: In a method for automatically manufacturing decorative small metal bells comprising the process of molding bell body(10), knob(20) and weight(30) at first, second and third lines (L1,L2,L3) installed on a press, the method comprises the steps of processing a slit hole(14) on the bottom(12) so that the knob(20) is stuck in the bottom(12) of the bell body(10) after molding the bell body(10) using downward drawing method by passing through multistep drawing processes and forming process in the first line (L1); upward bending the molded knob(20) perpendicularly to the first line (L1), thereby connecting and fixing the knob(20) to the slit hole(14) of the bell body(10) after molding the knob(20) by passing through piercing process and notching process in the second line (L2); and molding the weight(30) by passing through piercing process and notching process in the third line (L3) in such a way that the bell body(10) is separated from the metal strip (M1) by trimming the bell body(10) to which the knob(20) and weight(30) are connected from metal strip (M1) after downward bending the weight(30) in the state that the weight(30) is parallel to the first line (L1) so that a hole(34) part of the weight(30) is adjusted to an opened connection part(24) of the knob(20) fixed to the bottom(12) of the bell body(10) and connecting the connection part(24) to the knob(20) in the state that the weight(30) is swayed by closing up the connection part(24).
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