Foreign material removing device in synthetic resin reclaiming machine

A foreign material removing device in a synthetic resin reclaiming machine which comprises:

• an extruder having a screw shaft;
• a filter cylinder connected to the extruder and downstream thereof;
• a resin filtration filter mounted within said filter cylinder so as to form a resin chamber between said filter and said filter cylinder;
• a scraper shaft positioned within the filter cylinder and including projected strips as scrapers which protrude aslant to the axis of the scraper such that the strips contact the inner surface of the filter and interconnect with the screw shaft;
• a body fixed to the filter cylinder downstream thereof, which includes a first guide hole, one end of the body being connected to the inside of the filter cylinder, an ejecting port, and a second guide hole disposed in an orthogonal direction with respect to the axis of the scraper so as to connect said first guide hole to said ejecting port, further including a plurality of resin passages communicating with said resin chamber;
• a plurality of dies fixed to the body which include connecting passages for ejecting resin and a plurality of nozzle holes connecting to said resin ejecting passages;
• a squeezing piston connected to the body which reciprocates within said second guide hole;
• means for reciprocating said squeezing piston connected to said squeezing piston;
• a slide piston operatively associated with said squeezing piston for contacting said squeezing piston, and
• a spring member for biasing said slide piston toward said squeezing piston.