ELECTRIC MOTOR PRESS HAVING DUST GENERATION PREVENTING MECHANISM

PROBLEM TO BE SOLVED: To make this press suitable for a working in a clean room by dividing a casing, which tightly divides an inner part and an outer part, into plural upper and lower portions, and by adhering a belt-like dust discharge preventing sheet contacting with a convex part formed on an inner wall of the lower part to the upper part. SOLUTION: A head part of a casing is divided into a cover part of a casing upper part 1a and a casing lower part 1b, and a mating part requires an appropriate clearance for facilitating assembling and attachment/detachment in a maintenance checking. For example, a sealing plate 34 is mounted with a screw 35 to a support plate 33 fastened to the cover part of the casing upper part 1a and, a seal 36 composed of a soft sheet-like member such as soft rubber and soft resin for not passing the dusts is pressed to a cover part inner face of the casing upper part 1a by a sealing plate 34, so as to generate a holding force. A portion extending inside the casing at the tip of the seal 36 is brought into contact with a convex part 37 being formed in a way for protruding to the inner wall of the casing lower part 1b.