| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide the rotary type shut-off valve of an injection molding machine in which wear between a rotor and a rotary casing is reduced and adhesiveness between the rotor and the rotor casing can be adjusted. <P>SOLUTION: The bearing device of a rotor (22) comprises an oilless metal-made cylindrical bearing ring (30) mounted on a rotor casing (10), a clearance adjusting ring (31) having a wedge shaped cross-section, and an adjusting nut (27). The clearance adjusting ring (31) is pushed into a space between the bearing ring (30) and a taper part (24) by the adjusting nut (27). The adhesiveness or clearance between the bearing ring (30) and the clearance adjusting ring (31), and the adhesiveness or clearance between the clearance adjusting ring (31) and the taper part (24) of a rotor are adjusted depending on the pushing position. <P>COPYRIGHT: (C)2013,JPO&INPIT |
