Modified is moulded plastics to heat up and is chewed

The utility model relates to a modified is moulded plastics to heat up and is chewed, including chewing the body, chew the head and chew the core, it is equipped with an axial passage on one's body to chew, axial passage's head end is used for setting up the first assembly position of chewing the core according to interior being equipped with in proper order to outer order, a second assembly position and the portion of expanding outward for setting up chew the head, it is equipped with the connecting portion of being connected with first assembly position interference to chew core one side, the opposite side of chewing the core just stretches out the outer portion of expanding for the tip, it sets up on the second assembles the position to chew the head, and the cover is established on chewing the core, it is equipped with the hollow groove of multiunit from inside to outside in proper order to chew first periphery, hollow inslot is equipped with the heating collar, the heating collar has cup jointed explosion -proof snap ring outward. The advantage is: structural design is reasonable, ingenious, chews the closed angle realization interference fit that the core passes through the most advanced and first assembly position on the connecting portion for it is closely firm to connect, and the periphery cover of chewing the head is equipped with heating collar and explosion -proof snap ring, can make the sizing material be difficult for solidifying, has avoided the blocking phenomenon of sizing material, has improved job stabilization nature, can also play blast proof effect.