Extruding nozzle, system, and method therefor

Patent metadata

Field	Value
Publication number	US-11517866-B2
Application number	US-202117191952-A
Country	US
Kind code	B2
Filing date	Mar 4, 2021
Priority date	Oct 10, 2018
Publication date	Dec 6, 2022
Grant date	Dec 6, 2022

Abstract

A method for pelletizing an extruded material with an extruding nozzle includes inserting the extruded material into the extruding nozzle so that the extruded material flows through at least one material-flow channel, extending through a radiator of the extruding nozzle. Heat is transferred between the extruded material, flowing through the at least one material-flow channel, and the radiator. At least a portion of the radiator is located within a housing of the extruding nozzle.

First claim

What is claimed is:

1. A method for pelletizing an extruded material with an extruding nozzle, the method comprising steps of:
inserting the extruded material into the extruding nozzle so that the extruded material flows through at least one material-flow channel that extends through a radiator of the extruding nozzle; and
transferring heat between the extruded material, flowing through the at least one material-flow channel, and the radiator, where at least a portion of the radiator is located within a housing of the extruding nozzle;
wherein the radiator comprises:
a core member, comprising at least one peripheral wall;
a heat-transfer-fluid passage, formed by the at least one peripheral wall within an interior of the core member;
at least one first heat-transfer-fluid aperture, extending through the at least one peripheral wall;
heat-transfer fins, extending outward from the at least one peripheral wall; and
at least one second heat-transfer-fluid aperture, extending through the at least one peripheral wall and communicably coupling the heat-transfer-fluid passage and the heat-transfer fins so that cooling-fluid flow is provided therebetween.

2. The method of claim 1 , further comprising a step of cooling the extruded material, flowing through the at least one material-flow channel when transferring the heat between the extruded material and the radiator.

3. The method of claim 2 , wherein the extruded material is cooled to an ambient temperature of air, surrounding the extruding nozzle.

4. The method of claim 1 , further comprising a step of directing a heat-transfer fluid toward an exit aperture of the at least one material-flow channel with a helical fin of the radiator.

5. The method of claim 1 , further comprising diverting, with a diverter member, the extruded material from an extruding machine to the at least one material-flow channel, wherein the diverter member is coupled to the radiator.

6. The method of claim 1 , further comprising a step of breaking the extruded material, exiting the at least one material-flow channel, into pellets with a breaker head,
wherein
the extruded material comprises reinforcing fibers; and
the reinforcing fibers within the extruded material remain intact at broken ends of the pellets.

7. The method of claim 6 , further comprising a step of moving the breaker head relative to the at least one material-flow channel so as to break the extruded material.

8. The method of claim 7 , wherein the step of moving the breaker head comprises rotating the breaker head.

9. The method of claim 6 , wherein the step of breaking the extruded material comprises laterally moving the extruded material, flowing through the at least one material-flow channel, relative to the at least one material-flow channel with the breaker head so as to force the extruded material against an internal wall of the at least one material-flow channel.

10. The method of claim 6 , wherein the step of breaking the extruded material comprises substantially preventing radially outward movement of the extruded material, relative to the breaker head, with a sickle shaped tooth of the breaker head.

11. The method of claim 6 , wherein the step of breaking the extruded material comprises moving the breaker head relative to the at least one material-flow channel at predetermined periodic intervals so as to break the extruded material into the pellets, having a predetermined length.

12. The method of claim 6 , wherein:
a cross-sectional area of an exit aperture of the at least one material-flow channel is larger than a cross-sectional area of the extruded material, flowing therethrough, so that the breaker head causes lateral movement of the extruded material relative to the at least one material-flow channel, and
the lateral movement forces the extruded material against an internal wall of the at least one material-flow channel.

13. The method of claim 1 , further comprising breaking the extruded material, exiting the at least one material-flow channel, into pellets with a breaker head,
wherein
the breaker head comprises teeth, having a circumferential spacing about a longitudinal axis of the extruding nozzle, and
the circumferential spacing about the longitudinal axis of the extruding nozzle corresponds to a circumferential spacing of the at least one material-flow channel about the longitudinal axis of the extruding nozzle so as to substantially simultaneously break the extruded material, exiting each of the at least one material-flow channel, into the pellets.

14. The method of claim 1 , wherein the step of inserting the extruded material into the extruding nozzle comprises inserting a thermoset resin into the extruding nozzle.

15. The method of claim 1 , wherein the step of inserting the extruded material into the extruding nozzle comprises inserting a thermoplastic material into the extruding nozzle.

16. The method of claim 1 , further comprising coupling, with an extruder flange, the extruding nozzle to an extruder machine,
wherein the extruder flange is coupled to one or more of the housing or the radiator.

17. A method for pelletizing an extruded material with an extruding nozzle, the method comprising:
inserting the extruded material into the extruding nozzle so that the extruded material flows through at least one material-flow channel, extending through a radiator of the extruding nozzle;
transferring heat between the extruded material, flowing through the at least one material-flow channel, and the radiator, wherein at least a portion of the radiator is located within a housing of the extruding nozzle; and
with a breaker head, breaking the extruded material, exiting the at least one material-flow channel into pellets,
wherein:
the breaker head is rotatably coupled to one or more of the housing and the radiator,
the breaker head is coupled to a drive motor,
a controller is coupled to the drive motor to activate and deactivate the drive motor so as to rotate the breaker head in a predetermined rotational movement, and
the radiator comprises:
a core member, comprising at least one peripheral wall;
a heat-transfer-fluid passage, formed by the at least one peripheral wall within an interior of the core member;
at least one first heat-transfer-fluid aperture, extending through the at least one peripheral wall;
heat-transfer fins, extending outward from the at least one peripheral wall; and
at least one second heat-transfer-fluid aperture, extending through the at least one peripheral wall and communicably coupling the heat-transfer-fluid passage and the heat-transfer fins so that cooling-fluid flow is provided therebetween.

18. The method of claim 17 , wherein the drive motor is periodically activated and deactivated by the controller.

19. The method of claim 17 , further comprising cooling the extruded material, flowing through the at least one material-flow channel, when transferring the heat between the extruded material and the radiator.

20. The method of claim 17 , wherein:
the extruded material comprises reinforcing fibers; and
the reinforcing fibers within the extruded material remain intact at broken ends of the pellets.

Assignees

• Boeing Co

Inventors

• Olberg Jeffrey H
• Metschan Stephen L
• Phillips Richard V
• Perron Daniel J

Classifications

• B29C48/05

  Filamentary, e.g. strands · CPC title

• B01J2/20 Primary

  by expressing the material, e.g. through sieves and fragmenting the extruded length · CPC title

• B29C48/345

  Extrusion nozzles comprising two or more adjacently arranged ports, for simultaneously extruding multiple strands, e.g. for pelletising · CPC title

• B29C48/0022

  combined with cutting · CPC title

• B29C48/04

  Particle-shaped (making granules B29B9/00) · CPC title