| 摘要 |
PURPOSE:To isolate the space between a reciprocating driving means and work space by interpolating a movable block and the reciprocating riving means thereof inside a booth having a linear groove at the wall part, providing the link part to a work mechanism in series on the movable block and fixing the cover belt closing the linear groove to the link part. CONSTITUTION:A work mechanism 20 is linked to the link parts 10a, 10a in a movable block 10, a cover belt 21 is inserted to the slit groove 25 provided at the lower part of a hood wall 1f and the opening part of a linear groove 2 is almost closed. Upon actuation of a motor 15 the block 10 is moved by following it up, the work mechanism 20 is moved and at this time the cover belt 21 is moved as well according to the movement of the block 10 and the linear groove 2 is closed thereby. Since the work mechanism 20 is located outside the booth 1, the booth 1 inside and work space are completely isolated and yet, the space inside the booth 1 does not expand even if the block 10 is moved, so there is no danger of a wear-out powder, etc., coming into the work space. |
