摘要 |
PURPOSE: A compulsory rotating apparatus is provided to prevent breakage of a leading returning rotary shaft by compelling the rotary shaft to be returned in the event of abnormal operation of a pneumatic circuit. CONSTITUTION: A compulsory rotating apparatus comprises an upper-mold slide(100), an upper-mold leading push plate(110), and a lower-mold guide plate(130). The upper-mold slide(100) is mounted in a position inclined to the right and upwardly of a leading returning rotary shaft(120). The upper-mold slide(100) is slidingly moved downward. The upper-mold leading push plate(110) is vertically installed underneath the bottom surface of the upper-mold slide(100). The upper-mold leading push plate(110) is linearly guided interlockingly with the movement of the upper-mold slide(100). A predetermined inclination of a curved portion(112) is formed in one side of a free end of the upper-mold leading push plate(110). The lower-mold guide plate(130) is mounted in any position in the direction of rotation of the upper-mold leading push plate(110). The lower-mold guide plate(130) rotates the leading returning rotary shaft(120) interlockingly with the movement of the upper-mold leading push plate(110).
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