| 摘要 |
PURPOSE:To surely inject a predetermined amount of a molten adhesive regardless of a long or short operation interval, by always pressing the adhesive forwardly to apply pressure thereto and mechanically performing the opening and closing of a jet nozzle. CONSTITUTION:The cord-shaped heat-meltable adhesive introduced from the upper part of a main body is grasped by a hook member 105 by driving an air cylinder 108 and allowed to advance along with a feeder member 104 to apply pressure to the adhesive melted by the heater 203 of a heating melting part. An air cylinder 121 is driven in predetermined timing to slide a plunger 122 and the jet orifice 21a of the leading end of a nozzle is opened to inject the molten adhesive to the outside. When injection pressure is lowered, the hook member 105 is shaken and revolved to a retraction position and subsequently retracts along with the feeder member 104 to allow the adhesive to again move forwardly to be supplied, thus receiving injection pressure.
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