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1. (WO2018034102) SUCK BACK TYPE APPLICATION GUN UNIT

Pub. No.:    WO/2018/034102    International Application No.:    PCT/JP2017/026377
Publication Date: Fri Feb 23 00:59:59 CET 2018 International Filing Date: Tue Jul 11 01:59:59 CEST 2017
IPC: B05C 5/00
Applicants: SUN TOOL CORPORATION
株式会社サンツール
Inventors: HIDAKA, Shoji
日高 昇二
Title: SUCK BACK TYPE APPLICATION GUN UNIT
Abstract:
The present invention addresses the problem of setting a valve operation timing at a very short interval without being restricted by the speed of response over the domain of an electromagnetic valve when intermittent application is performed. A suck back type application gun unit according to the present invention is characterized by being provided with a cam-type valve driving mechanism in which a needle integrated with a movable valve body of the valve mechanism is provided and which includes a cam having a cam surface thereof being in contact with the leading edge of the needle, wherein an application timing can be freely set by rotation control of the cam. This suck back type application gun unit is also characterized by being configured from a stroke cam-type valve driving mechanism that performs valve-on-operation and valve-off-operation of a hot melt application gun unit by converting a rotation operation of a cam body into a stroke operation and that performs the on-operation at a hill part of the cam body and the off-operation at a valley part of the cam body.