| 摘要 |
PURPOSE:To forcedly discharge a fixed quantity of lubricant with good accuracy by communicating a push passage where a push pin slides with a charging passage or a discharge passage by a valve. CONSTITUTION:When a push pin 17 is retreated by action of an operating rod 20, lubricant is sucked in a charging passage 13 by negative pressure, so that the lubricant is charged from a passage 16 of a rotary shaft 12 of a valve structure portion 10a to the forward end of the push pin 17. When the shaft 12 is rotated about 90 deg. to communicate a discharge passage 14 with a push passage 15 through the passage 16, the lubricant is charged in the passage 16 and a fixed quantity charging portion extending to the position of the push pin 17. A rod 20 is advanced by a cylinder 19 to advance the push pin 17 by a set stroke, whereby a fixed volume of lubricant is discharged through a discharge passage 14. The quantity of discharged lubricant can be changed by adjusting a stroke screw 22.
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