| 摘要 |
<p>PURPOSE: To surely position leading guide blocks for drawing a tape upon completion of loading the tape by a catcher made of sheet metal at low cost. CONSTITUTION: The mechanism is composed of an opening 12 for fitting a rotary cylinder 91, a mechanism chassis 11 having loading grooves 14 to be continued to window holes 13 on both sides of the opening 12 respectively, the leading guide blocks 15 to be slid along the loading grooves 14 and the catcher for closing the window holes 13 and positioning the leading guide blocks 15. The leading guide block 15 is provided integrally with a 1st boss in an approximately columnar shape to be engaged with the loading groove 14, a 2nd boss in an approximately columnar shape having the same as or a smaller than the diameter of the 1st boss, a 3rd boss in an approximately columnar shape positioned above the 1st and 2nd bosses and an engagement projecting piece to be in contact with the back surface of the catcher. The catcher is formed of sheet metal to be bent integrally with U-shaped parallel grooves and V-shaped grooves to be engaged with the 2nd and 3rd bosses.</p> |
