Patent ID: 9566732
Date: 2017-02-14
CPC Classifications: B29C

Claim:
1. A mold-clamping mechanism in which top and bottom left and right tie bars span between a pressure-receiving platen and a fixed platen fixed to a bed, a movable platen is movably attached to the tie bars, a toggle link spans between the movable platen and the pressure-receiving platen, the movable platen is moved toward the fixed platen by the toggle link, and a mold is clamped by the movable platen and the fixed platen, wherein the pressure-receiving platen comprises a bottom part surrounding a central cavity, a left wall part and a right wall part provided upright from both ends of the bottom part, and a ceiling part for joining respective top ends of the left wall part and the right wall part, the bottom part includes a front frame part having link connecting stays that connect to the toggle link, a left frame part and a right frame part extending from both ends of the front frame part, and an inner frame part for joining respective distal ends of the left frame part and the right frame part, the bottom part thereby having a bottom opening via which the cavity communicates with the outside, and the ceiling part includes the front frame part having link connecting stays that connect to the toggle link, the left frame part and the right frame part extending from both ends of the front frame part, and the inner frame part for joining respective distal ends of the left frame part and the right frame part, the ceiling part thereby having a top opening via which the cavity communicates with the outside.