| 摘要 |
PURPOSE: An assembly device is provided to align the key of a roll with the keyway of a chalk easily by rotating the roll using a motor. CONSTITUTION: An assembly device(100) comprises a plurality of mounting units(110) in which a roll(10) is settled, a driving unit(120), and a moving unit(130). The mounting units have an inclined surface on top which surrounds the roll, and a pad is attached to the inclined surface to prevent the slip of the roll. The driving unit is arranged between the mounting units and rotates the roll. The moving unit is equipped with a chalk(20) coupled with an end of the roll and moves toward the roll.
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