Nozzle for sheet or film extrusion

• US 10,456,969 B2
• Filed: 10/24/2014
• Issued: 10/29/2019
• 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
• Primary Examiner(s): Wollschlager, Jeffrey M
• Assistant Examiner(s): Melendez, Armand
• Application Number:
  US14/523,103
• Publication Number:
  US 20150115498A1
• Time in Patent Office: 1,831 Days
• Field of Search: None
• 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 method for producing a container, the method comprising:

providing a die that includes a die bottom part, a die top part, a flexible element extending between the die bottom part to define a die outlet between the flexible element and the die bottom part, outer slides arranged laterally on the die, a blocking slide arranged below the flexible element and which is moveable in a vertical direction relative to the die outlet, and a plurality of adjustment bolts connected to the flexible element and which are adjustably moveable, the adjustment bolts including outer adjustment bolts and middle adjustment bolts arranged between the outer adjustment bolts;

producing a first structural part and a second structural part, each composed of an extrusion material, by;

initiating an extrusion process for the extrusion material;

forming, during the extrusion, a seal at lateral regions of the die by pressing only the outer adjustment bolts downward to thereby press the flexible element against the lateral slides without adjusting the middle adjustment bolts;

controlling, after forming the seal and during extrusion, the thickness of the extrusion material in a longitudinal direction and a transverse direction by adjusting only the middle adjustment bolts to thereby adjust a spatial distance between the flexible die element and the die bottom part;

cutting the extrusion material at the die outlet via the blocking slide; and

forming the container by connecting the first structural part and the second structural part at their respective circumferences.

2. The method of claim 1, wherein:

for the first structural part, controlling the thickness of the extrusion material comprises adjusted the thickness of the extrusion material in accordance with a first two-dimensional function related to time and a transverse position of the extrusion material; and

for the second structural part, controlling the thickness of the extrusion material comprises adjusted the thickness of the extrusion material in accordance with a second two-dimensional function related to time and a transverse position of the extrusion material, the second two-dimensional function being different than the first two-dimensional function.

3. The method of claim 1, wherein controlling the thickness of the extrusion material comprises adjusting the spatial distance between the flexible element and the die bottom part by an amount of at least 0.5 mm.

4. The method of claim 1, wherein controlling the thickness of the extrusion material comprises adjusting the spatial distance between the flexible element and the die bottom part by an amount of at least 1 mm.

5. The method of claim 1, wherein controlling the thickness of the extrusion material comprises adjusting the spatial distance between the flexible element and the die bottom part by an amount of at least 2 mm.

6. A method for producing a container composed of an extrusion material, the method comprising:

providing a die that includes a die bottom part, a die top part, a flexible element extending between the die bottom part to define a die outlet between the flexible element and the die bottom part, a pair of lateral slides arranged laterally on the die, a blocking slide arranged below the flexible element and which is moveable, and a plurality of adjustably moveable adjustment bolts connected to the flexible element, the adjustment bolts including outer adjustment bolts and middle adjustment bolts arranged between the outer adjustment bolts;

producing a first structural part and a second structural part, respectively by;

initiating an extrusion process for the extrusion material;

forming, during the extrusion, a seal at lateral regions of the die by pressing only the outer adjustment bolts downward to thereby press the flexible element against the lateral slides without adjusting the middle adjustment bolts;

controlling, after forming the seal and during extrusion, the thickness of the extrusion material by adjusting a spatial distance between the flexible die element and the die bottom part via an adjustment of only the middle adjustment bolts;

producing the first structural part and the second structural part, respectively, by cutting the extrusion material at the die outlet via the blocking slide; and

connecting the first structural part and the second structural part at their respective circumferences.

7. The method of claim 6, wherein, for the first structural part, the thickness of the extrusion material is adjusted in accordance with a two-dimensional function related to time and a transverse position of the extrusion material.

8. The method of claim 7, wherein, for the second structural part, the thickness of the extrusion material is adjusted in accordance with a second two-dimensional function related to time and a transverse position of the extrusion material, the second two-dimensional function being different than the first two-dimensional function.

9. The method of claim 8, further comprising operatively linking the first two-dimensional function and the second two-dimensional function to one another, in the form of a tensor, in such a way that respective circumferences of the first structural part and the second structural part correspond to each other.

10. The method of claim 8, further comprising, before producing the first structural part and the second structural part, configuring a tensor between the first two-dimensional function and the second two-dimensional function.

11. The method of claim 8, further comprising, after producing the first structural part and the second structural part, thermoforming the first structural part and the second structural part in regions thereof which are thicker after extrusion.

12. The method of claim 6, wherein controlling the thickness of the extrusion material comprises adjusting the spatial distance between the flexible element and the die bottom part by an amount of at least 0.5 mm.

13. The method of claim 6, wherein controlling the thickness of the extrusion material comprises adjusting the spatial distance between the flexible element and the die bottom part by an amount of at least 1 mm.

14. The method of claim 6, wherein controlling the thickness of the extrusion material comprises adjusting the spatial distance between the flexible element and the die bottom part by an amount of at least 2 mm.

15. A method for producing a structural part composed of an extrusion material, the method comprising:

providing a die that includes a die bottom part, a die top part, a flexible element extending between the die bottom part to define a die outlet between the flexible element and the die bottom part, a pair of lateral slides arranged laterally on the die, a moveably arranged blocking slide arranged below the flexible element, and a plurality of adjustment bolts connected to the flexible element and which are adjustably moveable, the adjustment bolts including outer adjustment bolts and middle adjustment bolts arranged between the outer adjustment bolts;

initiating an extrusion process for the extrusion material;

forming, during the extrusion, a seal at lateral regions of the die by pressing only the outer adjustment bolts downward to thereby press the flexible element against the lateral slides without adjusting the middle adjustment bolts;

controlling, after forming the seal and during extrusion, the thickness of the extrusion material by adjusting a spatial distance between the flexible die element and the die bottom part via an adjustment of only the middle adjustment bolts;

and cutting the extrusion material at the die outlet via the blocking slide, wherein the thickness of the extrusion material is adjusted in accordance with a two-dimensional function related to time and a transverse position of the extrusion material.