METHOD AND APPARATUS FOR JOINING PLASTIC MATERIALS TOGETHER

摘要

A method and apparatus for joining plastic profile members (70) together, particularly to form picture frames. The profile members (70) are held in place by fixture members (40, 42) against a locator member (44). The locator member (44) is withdrawn and a heated blade (150) positioned between the ends of the profile members (70). The profile members (70) are moved against the thin blade (150) and the end surfaces are heated to an elevated temperature. The blade is removed and the ends are welded together. During a cooling period, the retracted blade (150) can be cleaned as desired by a blade cleaning mechanism (48). After the joined profiles are removed, the members are returned to positions to begin another cycle.