NOZZLE FOR SHEET OR FILM EXTRUSION

• US 20150115498A1
• Filed: 10/24/2014
• Published: 04/30/2015
• Est. Priority Date: 10/25/2013
• Status: Active Grant

• Current Assignee: Magna Steyr Fuel Systems Gesmbh (M Unicar, Inc.)
• Original Assignee: Magna Steyr Fuel Systems Gesmbh (M Unicar, Inc.)
• Inventors: POZGAINER, Guenther, PALVOELGYI, Sandor
• Granted Patent: US 10,456,969 B2
• Time in Patent Office: Days
• US Class Current: 264/167
• CPC Class Codes: B29C 2948/92133 Width or height
• CPC Class Codes: B29C 2948/92152 Thickness
• CPC Class Codes: B29C 2948/92628 Width or height
• CPC Class Codes: B29C 2948/92647 Thickness
• CPC Class Codes: B29C 2948/92904 Die; Nozzle zone
• CPC Class Codes: B29C 48/0017 combined with blow-moulding or thermoforming
• CPC Class Codes: B29C 48/0021 combined with joining, lining or laminating
• CPC Class Codes: B29C 48/07 Flat, e.g. panels
• CPC Class Codes: B29C 48/08 flexible, e.g. films
• CPC Class Codes: B29C 48/12 Articles with an irregular circumference when viewed in cross-section, e.g. window profiles
• CPC Class Codes: B29C 48/2562 Mounting or handling of the die
• CPC Class Codes: B29C 48/2566 Die parts
• CPC Class Codes: B29C 48/25686 for dies
• CPC Class Codes: B29C 48/31 being adjustable , i.e. having adjustable exit sections
• CPC Class Codes: B29C 48/313 by positioning the die lips
• CPC Class Codes: B29C 48/92 Measuring, controlling or regulating

Abstract

A die and a method for producing a structural part from hardenable material by way of a die. The die includes a die bottom part; a die top part; a die control unit; a flexible element extending along a lower edge of the die top part; and at least one adjusting bolt to adjust at least partially, via the die control unit, a spatial distance between the flexible element and the die bottom part during extrusion.

Claims

1. A die, comprising:

a die bottom part;

a die top part;

a die control unit;

a flexible element extending along a lower edge of the die top part; and

at least one adjusting bolt to adjust at least partially, via the die control unit, a spatial distance between the flexible element and the die bottom part during extrusion.

2. The die of claim 1, wherein the spatial distance between the flexible element and the die bottom part is adjustable during extrusion by an amount of at least one of:

at least 0.5 mm;

at least 1 mm;

at least 2 mm.

3. The die of claim 1, further comprising a slide arranged spatially below the flexible element to set a width of the die, laterally on the die.

4. The die of claim 3, wherein at least one adjusting bolt is to press the flexible element permanently onto the slide.

5. The die of claim 1, wherein the die is for a board extrusion of a hardenable material.

6. The die of claim 1, wherein the die is for a film extrusion of a hardenable material.

7. A die, comprising:

a die bottom part;

a die top part;

a die control unit;

a flexible element extending along a lower edge of the die top part; and

a plurality of adjusting bolts to adjust, via the die control unit, a spatial distance between the flexible element and the die bottom part in a plurality of segments during extrusion.

8. The die of claim 7, wherein the spatial distance between the flexible element and the die bottom part is adjustable during extrusion by an amount of at least one of:

at least 0.5 mm;

at least 1 mm;

at least 2 mm.

9. The die of claim 7, further comprising a slide arranged spatially below the flexible element to set a width of the die, laterally on the die.

10. The die of claim 9, wherein at least one of the adjusting bolts is to press the flexible element permanently onto the slide.

11. The die of claim 7, wherein the die is for a board extrusion of a hardenable material.

12. The die of claim 7, wherein the die is for a film extrusion of a hardenable material.

13. A method for producing at least one structural part from a hardenable material, the method comprising:

providing a die having a die bottom part;

a die top part;

a die control unit;

a flexible element extending along a lower edge of the die top part; and

at least one adjusting bolt to adjust at least partially, via the die control unit, a spatial distance between the flexible element and the die bottom part during extrusion; and

producing a structural part by varying, during extrusion, the thickness of the structural part in at least one of a longitudinal direction and a transverse direction via the die control unit.

14. The method of claim 13, wherein varying the thickness during extrusion comprises adjusting, via the die control, the spatial distance between the flexible element and the die bottom part.

15. The method of claim 13, wherein the die control unit adjusts the spatial distance two-dimensionally as a function of a position in the transverse direction and of time.

16. The method of claim 15, further comprising producing a second structural part by varying, during extrusion, the thickness of the structural part in at least one of a longitudinal direction and a transverse direction via the die control unit by adjusting the spatial distance between the flexible element and the die bottom part in accordance with a second two-dimensional function that is different from the first two-dimensional function.

17. The method of claim 16, further comprising forming a container by welding the structural part and the second structural part at respective circumferences thereof.

18. The method of claim 16, wherein the first two-dimensional function and the second two-dimensional function are linked to one another in such a way that respective circumferences of the structural parts fit one on the other.

19. The method of claim 16, further comprising, before producing the structural part and the second structural part, configuring, via the die control unit, a link between the first two-dimensional function and the second two-dimensional function.

20. The method of claim 13, further comprising, after producing the structural part, thermoforming the structural part in regions thereof which are thicker after extrusion.