IMPROVED SIDE GATE TYPE MOLD ARRANGEMENT WITH POINTED HEAT-GENERATING MODULE

摘要

A side gate type mold arrangement for use in runnerless injection molding is incorporated with a pointed intermittently heat-generating module (1) having a non-axial heating tip (4) such that the non-axial tip type module is mounted in an axial recess or through-hole of the mold arrangement with the non-axial tip (4) being substantially received in the side or non-axial gate (36B). The mold arrangement comprises a cavity half block (36) defining a cavity half (36A) with the side gate (36B) open thereto and another block element. The axial recess or through-hole is defined by the cavity half block and the other block element in combination, and is changeable in a cross-sectional size in a direction perpendicular to the mold axis due to a relative perpendicular movement therebetween.