| 摘要 |
An applicator gun for solder paste having a tapered discharge nozzle at the end of the tubular body and having a valve rod mounted to reciprocate in said body so that the tip of the rod engages the internal valve surface of the nozzle. The gun employs a unique combination of a soft elastic rubber nozzle, a soft elastic rubber valve tip, and a special rolling-type rubber diaphragm to minimize secondary displacement of the solder paste. The gun can operate effectively for long periods of time when continually discharging tiny beads of such paste or when operated at extremely high frequency.
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