Replaceable joint connecting assembly for plastic extruder

The utility model relates to the related technical field of extruders. The utility model relates to a connector, in particular to a replaceable connector connecting assembly for a plastic extruder. The device comprises a joint, a connecting sleeve, an inner joint and an extrusion groove, a connecting sleeve is clamped on the surface of the joint; an adjusting piece is connected into the connecting hole in a penetrating mode. A limiting plate is welded on the surface of the elastic piece; a fixing groove is formed in the limiting plate; the adjusting piece is welded in the fixing groove; an extrusion groove is formed in the inner joint; the limiting plate is clamped in the extrusion groove; the beneficial effects are that: the device is suitable for large-scale production; the elastic clamping ring is of an elastic structure; the elastic clamping ring is extruded on the inner wall of the connector and fixed in the multiple sets of clamping grooves to form a multi-closed clamping structure, no connecting gap is