Injection molding nozzle tip

An injection molding nozzle, comprising:

• an inner insert, the outer surface of said inner insert having a back end, the back end of said inner insert being of a shape of a hexagon head, which is followed by an outer thread, a cylindrical centering portion, a tubular relief portion, and a small cylindrical extension with a spherical end, and the inner surface of said inner insert having a large central duct, from which a plurality of smaller holes extend to its front surface;
• and
• an outer insert, the outside of said outer insert having a thread for engagement in a nozzle housing of an injection molding machine, followed by a small cylindrical portion for centering in nozzle housing, an enlarged cylindrical portion that constitutes the secondary seal, a hexagon portion for torque, a small cylindrical portion for making a primary seal, and a conical end of the tip, wherein the primary seal portion and the conical end of the tip create an annular well between them, and
• the inside surface of outer insert having a central hole with a threaded portion, followed by a cylindrical portion, and ending with a small cylindrical hole, and a plurality of small holes extending from a bottom of the central hole of outer insert to an annular well,
• and wherein said inner insert's thread engages said outer insert's internal thread until the shoulder of said inner insert presses against back of the outer insert.

An injection molding nozzle, comprising:

• an inner insert, on the outside, the inner insert having a small cylindrical portion for centering in an outer insert, followed by an outer thread for engagement of an outer insert, then a reduced hexagon portion for torque, a small cylindrical portion that forms a primary seal, and the conical active end of tip, wherein the primary seal portion and the conical tip form an annular well between them, and on the inside of said inner insert, the inner insert has a central duct, from which a plurality of smaller holes extend to the annular well;
• and
• an outer insert, positioned on the outside of said inner insert, the outer insert having a cylindrical portion, which is followed by an outer thread for engaging a nozzle housing of an injection molding machine, a cylindrical centering portion for centering in the nozzle housing, a narrow cylindrical portion that forms the secondary seal, and a hexagon portion for torque, and
• said outer insert on the inside, having a large central duct, extending from back to front, where at the front, the outer insert has an inner thread, followed by a reduced cylindrical centering portion.

An injection molding nozzle, comprising:

• an inner insert, the back end of said inner insert having a shape of a hexagon head, which is followed by an outer thread, a cylindrical centering portion, and a relief portion ended by a small annular shoulder, followed by the conical active end of the tip, said inner insert's inside having a large central duct, from which a plurality of smaller holes extend to the conical end of tip;
• an outer insert, positioned on the outside of said inner insert, said outer insert having an thread for engagement in a nozzle housing of injection molding machine, followed by a small cylindrical portion for centering in nozzle housing, an enlarged cylindrical portion that forms a secondary seal, and a hexagon portion for torque, on the inside, said outer insert has a central hole with an internal threaded portion for engagement with said inner insert, followed by a cylindrical portion, and ending with another threaded portion for engagement of a thermal ring;
• and
• a thermal ring, positioned between said outer insert and said inner insert, the thermal ring having a threaded portion, followed by a reduced, hexagon portion for torque, and ending with a cylindrical portion that forms a primary seal, on the inside, said thermal ring has a cylindrical hole, ending with a cone at the active end, wherein centering between the nozzle housing and said outer insert takes place on the small cylindrical portion found between the threaded end and the secondary seal, and wherein centering between said outer insert and inner insert takes place on the cylindrical surface of contact between said outer insert and inner insert.

An injection molding nozzle, comprising:

• an inner insert, on the outside, the inner insert having a cylindrical portion having an annular grooves, followed by a tubular relief ending with a cylindrical flange, another relief ended by a small annular shoulder, and followed by the conical active end of tip, on the inside, the inner insert having a large central duct, from which a one or more, smaller, holes extend to the conical active end;
• an outer insert, positioned on the outside of said insert, the outer insert having a threaded portion for engagement in a nozzle housing of an injection molding machine, followed by a cylindrical portion for centering in the nozzle housing, then an enlarged cylindrical portion that forms a secondary seal, and ending with a hexagon portion for torque, on the inside, the outer insert has a cylindrical hole designed to hold the back end of the inner insert, followed by a cylindrical pocket to hold the inner insert's flange, and ending with an inner thread;
• and
• a thermal ring, positioned between said outer insert and said inner insert, the thermal ring has a threaded portion for engagement in the front end of the outer insert, followed by a reduced hexagon portion for torque, and ending with a small cylindrical portion that constitutes the primary seal, on the inside, the retaining thermal ring has a cylindrical hole designed to hold the small annular shoulder and first relief of the inner insert, and ending with a small cone at the active end, wherein the small cone and the conical end of the inner insert form the annular well at the active end of the tip.