| 摘要 |
PROBLEM TO BE SOLVED: To prevent a conveyance object from leaking into a rear end part of a feed tray. SOLUTION: A reciprocating feeder I for reciprocating and moving the feed tray 4 in the forward and backward directions in synchronization with rotation of a main shaft 7 is provided at a lower position of a hopper 3 so that an inner bottom part of the feed tray 4 approaches a lower end of a rear part skirt 19 of the hopper 3. A door body 22 for sealing is arranged at a position in the vicinity of a rear side of the rear part skirt 19 of the hopper 3 so as to elevate and lower it. The door body 22 for sealing can elevate and lower by bringing cam seats 29, 30 attached to the door body 22 for sealing with a cam 25 on camshafts 26, 27 rotated in synchronization with the main shaft 7. When the feed tray 4 backs, the door body 22 for sealing is lowered so as to bring it into contact with an inner bottom face of the feed tray 4. When the feed tray 4 advances, the door body 22 for sealing is pulled up to form a clearance between the inner bottom face of the feed tray 4 and it. COPYRIGHT: (C)2005,JPO&NCIPI
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