Rotor assembly with one-piece finger member

Patent metadata

Field	Value
Publication number	US-10220558-B2
Application number	US-201615057763-A
Country	US
Kind code	B2
Filing date	Mar 1, 2016
Priority date	May 23, 2012
Publication date	Mar 5, 2019
Grant date	Mar 5, 2019

Abstract

A rotor assembly for extruding randomly shaped food items includes a one-piece finger member. The one-piece finger member reduces the downtime of the extruding machine containing the rotor assembly by reducing the number of parts in the rotor assembly and reducing the adjustment necessary after finger replacement. The proprietary threaded interface between the finger member and the improved extruder machine allows for quick swap out during extruder maintenance.

First claim

What is claimed is:

1. A rotor assembly for an extruding machine for extruding food items, the rotor assembly comprising:
a rotor base configured for releasable attachment to an extruding machine capable of rotating the rotor base about a longitudinal axis;
a plurality of cutting assemblies releasably coupled to the rotor base;
a die plate releasably coupled to the rotor base, the die plate having a central aperture passing there through; and
a one-piece finger member having;
a plurality of fingers spaced around a centrally located flattened cone; and
a quick releasing coupling;

wherein the one-piece finger member is releasably coupled to the rotor base through the central aperture of the die plate via the quick releasing coupling; and
wherein the fingers extend in a same direction as the flattened cone.

2. The rotor assembly according to claim 1 , wherein the quick releasing coupling comprises:
a threaded interface.

3. The rotor assembly according to claim 2 , wherein the threaded interface comprises:
a multi-indexed non-continuous threaded interface.

4. The rotor assembly according to claim 3 , wherein the threaded interface further comprises:
a high pitched threading.

5. The rotor assembly according to claim 3 , wherein the threaded interface further comprises:
a pitch difference between lead angle threading and the rest of the threading.

6. The rotor assembly according to claim 1 , wherein each cutting assembly comprises:
an external cutter having a holder portion, a blade portion, and a cutter interface disposed at an intersection of the holder portion and the blade portion; and
a fastener for fastening the external cutter to the rotor base.

7. The rotor assembly according to claim 6 , wherein the cutter interface is filleted.

8. The rotor assembly according to claim 1 , wherein the die plate is fabricated from stainless steel.

9. An extruding machine for producing randomly shaped food items comprising:
a hopper assembly;
a conveyer assembly; and
an extruding assembly, the extruding assembly comprising:
a stator assembly;
an auger assembly, the auger assembly comprising:
an auger driver for rotating the auger;
an auger adjustment assembly for moving the auger in relation to the stator; and
a auger screw assembly with a plurality of augers;

a extruder drive assembly; and
a rotor assembly, comprising;
a one-piece finger member having;
a plurality of fingers spaced around a centrally located flattened cone; and
a quick releasing coupling;
wherein the rotor assembly is rotated by the extruder drive assembly; and
wherein the fingers extend in a same direction as the flattened cone.

10. The extruding machine according to claim 9 , wherein the auger screw assembly comprises:
a first threaded auger screw and a second threaded auger screw.

11. The extruding machine according to claim 10 , wherein both the first auger screw and the second auger screw rotate in the same direction.

12. The extruding machine according to claim 10 , wherein both the first auger screw and the second auger screw rotate in opposite directions.

13. The extruding machine according to claim 9 , wherein the rotor assembly further comprises:
a rotor base configured for releasable attachment to an extruding machine capable of rotating the rotor base about a longitudinal axis;
a plurality of cutting assemblies releasably coupled to the rotor base;
a die plate releasably coupled to the rotor base, the die plate having a central aperture passing there through; and
wherein the one-piece finger member is releasably coupled to the rotor base through the central aperture of the die plate via the quick releasing coupling.

14. The extruding machine according to claim 13 , wherein the quick releasing coupling comprises:
a threaded interface, having three indexed threaded surfaces; and
wherein the threaded interface is multi-indexed and non-continuous.

15. The extruding machine according to claim 14 , wherein the threaded interface further comprises:
a threaded interface capable of engaging completely in approximately ⅙ of a revolution.

16. The extruding machine according to claim 14 , wherein the threaded interface further comprises:
a pitch difference between lead angle threading and the rest of the threading.

17. The extruding machine according to claim 13 , wherein the die plate is fabricated from stainless steel and surface prepared by bead blasting.

Assignees

• Frito Lay North America Inc

Inventors

• Williams Dennis
• Williams David K

Classifications

• B29C47/08 Primary

  Operations & Transport · mapped topic

• A23P30/20

  Extruding · CPC title

• B29C48/2566

  Die parts · CPC title

• B29C48/022 Primary

  characterised by the choice of material · CPC title

• B29C48/05

  Filamentary, e.g. strands · CPC title