| 摘要 |
PROBLEM TO BE SOLVED: To assemble quickly without being restricted by an extremely narrow pitch interval with an adjacent piston for strengthening fixing connection to a piston driving plate on the upper end of each piston, when assembling a dispensation head by assembling 1,536 pieces of pistons on the piston driving plate of the dispensation head. SOLUTION: A piston fixing sheet 1a is formed of an elastic material having flexibility and restoring force such as rubber or plastics and assembled on the under surface side of the piston driving plate 1 of the suction dispensation head a. 1,536 pieces of holes w with an inner diameter a little smaller than the outer diameter of a piston 2 head part 20 are bored into the piston fixing sheet 1a, by aligning and 32 pieces of longitudinal holes and 48 pieces of horizontal holes. Each piston 2 head part 20 is pressed-in and fitted with each hole w, and each piston 2 is assembled and fixed to the piston driving plate 1 by fitting. COPYRIGHT: (C)2009,JPO&INPIT |
