| 摘要 |
PROBLEM TO BE SOLVED: To improve the workability and the efficiency of assembling a mold by adding a reinforcement tightening piece to a locking tool itself, and tightening the reinforcement on the extension line of a separator. SOLUTION: A reinforcement tightening part 15 is connected to a horizontal projection part 20 and an extended straight part 11 at a threaded upper part at the angles ofβandγ, respectively. A narrow U-shaped locking part 5 rises continuously at the rise angleα(80 deg.<=α<=130 deg.) (γandδare approximately 90 deg.) from the extended straight part 11. The axis of the narrow U-shaped locking part 5 is present on the plane 6 including the U-shaped plane 5A. The angleβformed between the reinforcement tightening part 15 and the extended straight part 11 is preferably 85 deg.<=β<=110 deg., and if the angleβis below 85 deg., an excessive inclination is left behind on the reinforcement tightening part 15 when the narrow U-shaped locking part 5 is fully driven. If the angleβexceeds 110 deg., an excessive inclination is left behind on the reinforcement tightening part 15 unless the depth of a U-shaped part of the narrow U-shaped locking part 5 is increased, and the range of the angleβis determined mainly from the viewpoint of the workability.
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