| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent the load applied to respective slit gap adjusting bolts and to prevent the damage of the bolts or the expansion of backlash to adjust a slit gap with high accuracy in an apparatus for adjusting the slit gap of a mouthpiece by using slit gap adjusting bolts, drive shafts and motors. SOLUTION: In a slit gap adjusting apparatus for a mouthpiece having a plurality of the slit gap adjusting bolts 12 provided to one of lips 14a, 14b forming the slit 11 of the mouthpiece 1 ejecting a molten resin in a sheet form and arranged in the longitudinal direction of the slit, a plurality of the motors provided corresponding to the adjusting bolts 12 and a plurality of the drive shafts connecting them, a means for allotting the quantities of the forward or reverse rotation of the motors to the adjacent bolts 12i-1, 12i+1 of the corresponding slit gap adjusting bolt 12i in a predetermined ratio is provided.</p> |
