Fixing device

Patent metadata

Field	Value
Publication number	US-9283715-B2
Application number	US-90246710-A
Country	US
Kind code	B2
Filing date	Oct 12, 2010
Priority date	Oct 12, 2009
Publication date	Mar 15, 2016
Grant date	Mar 15, 2016

Abstract

A fixing device for fixating a segment of a wind turbine blade to a mold in which the blade segment is manufactured, wherein the blade segment has a fixating portion. The fixing device comprises: a first portion for removably fixating the blade segment at its fixating portion to the mold; and a second portion for fixating the fixing device to the mold.

First claim

What is claimed is:

1. A method for manufacturing a wind turbine blade or a segment of a wind turbine blade in a mold, the wind turbine blade or the segment of the wind turbine blade having a leading edge and a trailing edge that defines a chordwise direction, the method comprising:
manufacturing a blade segment within a mold, at least one fixating portion being at least partially formed at the blade segment;
providing at least one fixing device at the mold for fixating the blade segment to the mold, wherein the at least one fixing device comprises a first portion for removably fixating the blade segment at its at least one fixating portion to the mold, and a second portion for fixating the at least one fixing device to the mold;
removably fixating the at least one fixating portion of the blade segment to the mold with the at least one fixing device; and
turning the mold over so as to position the mold on top of another corresponding mold, wherein the at least one fixing device exerts a pressing force on the at least one fixating portion of the blade segment in the chordwise direction so as to keep the molded blade segment in the mold when the mold is turned over and positioned on top of the corresponding mold.

2. The method of claim 1 , further comprising:
providing a vacuum bag on the mold such that it covers the blade segment with the at least one fixating portion of the blade segment;
providing a first adhesive tape between the vacuum bag and the at least one fixating portion of the blade segment;
providing a second adhesive tape between the vacuum bag and the mold adjacent to the at least one fixating portion of the blade segment;
exhausting air out of the space between the mold and the vacuum bag with the blade segment in between, thereby providing a low-pressure in the space; and
removing the vacuum bag such that a portion of the vacuum bag remains between the first adhesive tape and the second adhesive tape covering the edge of the at least one fixating portion of the blade segment.

3. The method of claim 1 , wherein the at least one fixing device comprises a wedge part, the method further comprising clamping the wedge part between a first protrusion on the mold over which the at least one fixating portion of the blade segment extends and a second protrusion opposite to the first protrusion, thereby fixating the at least one fixating portion to the mold.

4. The method of claim 1 , wherein the at least one fixing device includes a first portion and a second portion, the method further comprising:
removably fixating the blade segment at its at least one fixating portion to the mold using the first portion; and
fixating the at least one fixing device to the mold using the second portion.

5. The method of claim 4 , wherein fixating the at least one fixing device to the mold using the second portion further comprises removably fixating the at least one fixing device to the mold using the second portion.

6. The method of claim 1 , further comprising at least partially inflating the at least one fixing device.

7. The method of claim 1 , further comprising locking the at least one fixing device in a predefined position in which it exerts the pressing force on the at least one fixating portion of the blade segment.

8. The method of claim 1 , further comprising arranging the at least one fixing device relative to the mold so that the mold is configured to mate with the corresponding mold without interference from the at least one fixing device.

9. The method of claim 1 , wherein the mold includes a first protrusion over which the at least one fixating portion of the blade segment extends, and a second protrusion spaced from the first protrusion and arranged such that the at least one fixating portion of the blade segment is the only portion of the blade segment disposed between the first and second protrusions, and wherein the at least one fixing device includes a wedge part, the method further comprising inserting the wedge part between the first and second protrusions thereby fixating the at least one fixating portion to the mold.

10. A method for manufacturing a wind turbine blade or a segment of a wind turbine blade in a mold, the wind turbine blade or the segment of the wind turbine blade having a leading edge and a trailing edge that defines a chordwise direction, the method comprising:
manufacturing a blade segment within a mold, at least one fixating portion being at least partially formed at the blade segment and extending beyond the part of the blade segment that results in the wind turbine blade;
providing at least one fixing device at the mold for fixating the blade segment to the mold, wherein the at least one fixing device comprises a first portion for removably fixating the blade segment at its at least one fixating portion to the mold, and a second portion for fixating the at least one fixing device to the mold; and
removably fixating the at least one fixating portion of the blade segment to the mold with the at least one fixing device by exerting a pressing force on the at least one fixating portion of the blade segment in the chordwise direction such that the molded blade segment is kept in the mold when the mold is turned over.

11. The method of claim 10 , wherein the at least one fixing device comprises a wedge part, the method further comprising clamping the wedge part between a first protrusion on the mold over which the at least one fixating portion of the blade segment extends and a second protrusion opposite to the first protrusion, thereby fixating the at least one fixating portion to the mold.

12. The method of claim 10 , further comprising:
removably fixating the blade segment at its at least one fixating portion to the mold using the first portion; and
fixating the at least one fixing device to the mold using the second portion.

13. The method of claim 12 , wherein fixating the at least one fixing device to the mold using the second portion further comprises removably fixating the at least one fixing device to the mold using the second portion.

14. The method of claim 10 , further comprising at least partially inflating the at least one fixing device.

15. The method of claim 10 , further comprising locking the at least one fixing device in a predefined position in which it exerts the pressing force on the at least one fixating portion of the blade segment.

16. The method of claim 10 , wherein the mold includes a first protrusion over which the at least one fixating portion of the blade segment extends, and a second protrusion spaced from the first protrusion and arranged such that the at least one fixating portion of the blade segment is the only portion of the blade segment disposed between the first and second protrusions, and wherein the at least one fixing device includes a wedge part, the method further comprising inserting the wedge part between the first and second protrusions thereby fixating the at least one fixating portion to the mold.

Assignees

• Schroder Henning
• Petersen Leif Kappel
• Wieland Maja Rose
• Davis Olav
• Vestas Wind Sys As

Inventors

• Schroder Henning
• Petersen Leif Kappel
• Wieland Maja Rose
• Davis Olav

Classifications

• B29C33/505

  cores or mandrels, e.g. inflatable (B29C33/0016 takes precedence; for winding and joining B29C53/824; for supporting articles during joining B29C66/634; flexible cores for vulcanizing tyres B29D30/0654) · CPC title

• B29L2031/085

  Wind turbine blades · CPC title

• B29L2031/082

  Blades, e.g. for helicopters · CPC title

• B29C70/44

  using isostatic pressure, e.g. pressure difference-moulding, vacuum bag-moulding, autoclave-moulding or expanding rubber-moulding · CPC title

• B29C70/541 Primary

  Positioning reinforcements in a mould, e.g. using clamping means for the reinforcement (positioning inserts in moulds B29C33/12; lay-up on a mould B29C70/30) · CPC title