| 摘要 |
PROBLEM TO BE SOLVED: To easily avoid the positional deviation of corresponding upper and lower chasing molds by engaging both the molds corresponding to both die sets to be mounted with a clearance for allowing the movement of the molds. SOLUTION: Clearances 7a, 7b of 0.1mm or less are provided between a chase mold 1 and a die set 2 and between a chase mold 3 and a die set 4 in the state that the molds 1, 3 corresponding to the sets 2, 4 are engaged to be mounted. The state that a gap of 0.1mm or less or preferably 0.01 to 0.07mm in a vertical direction or 0.1mm or preferably 0.05 to 0.08mm in a side direction is retained is adopted. The molds 1, 3 have a clearance to make it possible to move longitudinally or laterally in the state engaged with the sets 2, 4. To hold the engaging state, a bolt 8a with a seat for restricting the clamping is formed to facilitate the clearance at the bottom or upper surface side of the set as a suppressing tool. |
