VARIABLE EXTRUSION DIE APPARATUS

• US 20160167278A1
• Filed: 05/11/2015
• Published: 06/16/2016
• Est. Priority Date: 12/11/2014
• Status: Active Grant

• Current Assignee: Hyundai Motor Company (Hyundai Motor Group)
• Original Assignee: Hyundai Motor Company (Hyundai Motor Group)
• Inventors: PARK, Hyung Soo, CHOI, Jae Hoon
• Granted Patent: US 9,744,709 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B29C 2948/92571 Position, e.g. linear or angular
• CPC Class Codes: B29C 2948/92904 Die; Nozzle zone
• CPC Class Codes: B29C 48/12 Articles with an irregular circumference when viewed in cross-section, e.g. window profiles
• CPC Class Codes: B29C 48/13 Articles with a cross-section varying in the longitudinal direction, e.g. corrugated pipes
• CPC Class Codes: B29C 48/2556 provided in or in the proximity of dies B29C48/302, B29C48/31, B29C48/325 take precedence
• CPC Class Codes: B29C 48/25686 for dies
• CPC Class Codes: B29C 48/301 having reciprocating, oscillating or rotating parts
• CPC Class Codes: B29C 48/302 being adjustable, i.e. having adjustable exit sections
• CPC Class Codes: B29C 48/92 Measuring, controlling or regulating

Abstract

A variable extrusion die apparatus includes a first die into which an extrusion material is injected. A second die is coupled to the first die and has an extrusion nozzle having a shape corresponding to a cross section of an extrusion product. A swivel core is rotatably installed in the extrusion nozzle, wherein a cross section of the extrusion nozzle is varied by rotation of the swivel core.

Claims

1. A variable extrusion die apparatus, comprising:

a first die into which an extrusion material is injected;

a second die coupled to the first die and having an extrusion nozzle having a shape corresponding to a cross section of an extrusion product; and

a swivel core rotatably installed in the extrusion nozzle, wherein a cross section of the extrusion nozzle is varied by rotation of the swivel core.

2. The variable extrusion die apparatus according to claim 1, wherein the swivel core has a cross-sectional shape having at least two portions with different curvatures from each other.

3. The variable extrusion die apparatus according to claim 1, wherein a cross-sectional area of the extrusion nozzle is the same regardless of rotation of the swivel core.

4. The variable extrusion die apparatus according to claim 1, wherein an axial direction of the swivel core is the same as an extrusion direction of the extrusion material.

5. The variable extrusion die apparatus according to claim 1, wherein the first die has opposing first and second major surfaces, and the apparatus further comprises

a core wheel configured to rotate the swivel core, wherein the second die is coupled to the first major surface of the first die, and the core wheel is installed to the second major surface of the first die.

6. The variable extrusion die apparatus according to claim 5, further comprising:

a control shaft connecting the core wheel to the swivel core, the control shaft passing through the first die and extending toward the extrusion nozzle of the second die.

7. The variable extrusion die apparatus according to claim 6, wherein the core wheel has a plurality of spokes, and the control shaft has two opposing ends, one opposing end connected to an inner peripheral surface of the core wheel via the plurality of spokes, and the other opposing end connected to the swivel core.

8. The variable extrusion die apparatus according to claim 5, further comprising a controller configured to rotate the core wheel.

9. The variable extrusion die apparatus according to claim 8, wherein the controller comprises a motor configured to generate power, a crank configured to be rotated by the motor, and a connecting rod connecting the crank to the core wheel.

10. The variable extrusion die apparatus according to claim 9, wherein the motor rotates in a first rotation direction and the swivel core rotates in a second rotation direction opposite to the first rotation direction.

11. A variable extrusion die apparatus, comprising:

an extrusion die having an extrusion nozzle having a shape corresponding to a cross section of an extrusion product; and

a swivel core rotatably installed in the extrusion nozzle,

wherein a cross section of the extrusion nozzle is varied by rotation of the swivel core.

12. The variable extrusion die apparatus according to claim 11, wherein an axial direction of the swivel core is the same as an extrusion direction of an extrusion material.

13. The variable extrusion die apparatus according to claim 11, further comprising a core wheel configured to rotate the swivel core, wherein the core wheel is rotatably installed on the extrusion die.