Injecting machine for two different liquids

An injecting machine (10) for two different liquid materials (35, 37), comprising:

• an injection cylinder (12) having a nozzle (11) disposed on a distal end thereof;
• a plunger (13) reciprocally received in the injection cylinder for moving between an advanced position and a retracted position, the plunger injecting a liquid mixture (39) of the two different liquid materials as the plunger moves to the advanced position;
• plunger moving means (17) for causing the plunger to move between the advanced position and the retracted position;
• and
• a mixing mechanism (20) disposed on the injection cylinder for mixing the two different liquid materials together to feed the liquid mixture into the injection cylinder, and
• wherein the plunger (13) includes a front portion having a helical groove (13a) formed on an outer circumferential surface thereof to allow the liquid mixture (39) fed from the mixing mechanism (20) to pass through the helical groove (13a) for collecting in a forward space formed forward of the front portion of the plunger (13).