| 摘要 |
<p>PURPOSE:To cope with many types of cassette jig in the captioned device at the time of shifting a base between cassettes by supporting base supporting plates movably in parallel by means of a pair of base pitch varying screws having different screw pitches. CONSTITUTION:Base supporting plates 6 each supporting one base 5 are supported movably in parallel by means of a pair of pitch varying screws 7, 7 in which one screw pitch is set twice the screw pitch of the other. In this structure, the base supporting plates 6 are alternately supported on each base pitch screw 7, 7 and both pitch screws 7, 7 are rotated in the same direction at the same angle, to make the pitch of the base supporting plate 6 2a. Then, one pitch screw 7 is moved in the axial direction to form pitches (b), (c). By this structure, many types of pitches can be formed to cope with may types of cassettes.</p> |
