MANUFACTURE OF GOLF CLUB HEAD AND MOLD USED FOR THE MANUFACTURE

摘要

PURPOSE:To be able to mold a golf club head in accordance with a design, a mold can be manufactured inexpensively and an improvement in productivity of the golf club head can be contrived. CONSTITUTION:A bottom force 1b is provided with a pressing device 8 such as a hydraulic cylinder pressing a resin material W injected within a mold 1 through a sole plate and a pressing rod 9 of the pressing device 8 abuts against the bottom of the sole plate 2. Then supply pipes 13a, 13b supplying hydraulic oil to an extending side pressure chamber 12a and contracting side pressure chamber 12b which are divided by a piston 11 are joined respectively to a cylyinder 10 of a pressing device 8, the pressing device 8 is operated under a state wherein a resin material is filled into the mold 1 and injection pressure is made zero and a sole surface of the club head is pressed through the sole plate 2.