| 摘要 |
PURPOSE:To enable a high-speed operation while preventing the denaturalization of material to be distributed, by reducing the displacement of a passage change- over element having a number of pipelines. CONSTITUTION:As a passage change-over element 16 is displaced in the direction of the arrow by a distance equivalent to the total of the diameters and pipeline intervals of the tubes of a pipeline group 22, both the ends of the pipeline group 22 are closed and instead, the pipeline group 26 arranged at an inner part are made to communicate with a cylinder group 24 and a conduit group 30. Under such a condition as a plunger block 20 is moved in the direction of the arrow, a fluid material stored in a cylinder group 24 is discharged from a discharge nozzle group 28 through the pipeline group 26 and a conduit group 30 to be distributed to a packing container group. The regular displacement of the element 16 as reciprocation with a fixed stroke is achieved with a positive motion cam of the like. Such a limited displacement of the element 16 can minimize the rise in the temperature due to friction heat even in the high-speed operation thereby enabling a dispensor free from fear of thermal modification of material to be distributed.
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