Clamping tong and a mould system comprising the same

Patent metadata

Field	Value
Publication number	US-12370725-B2
Application number	US-202017776422-A
Country	US
Kind code	B2
Filing date	Nov 13, 2020
Priority date	Nov 15, 2019
Publication date	Jul 29, 2025
Grant date	Jul 29, 2025

Abstract

Disclosed are a mould system and a clamping tong for securing a mould item part in a mould of a mould system. The clamping tong comprises: a primary tong segment comprising a primary clamping surface for applying clamping pressure on a clamping portion of a mould item part; a secondary tong segment coupled to the primary tong segment and comprising a secondary clamping surface for applying clamping pressure on a clamping portion of the mould. The clamping tong being configured to change between a clamping state and a release state, wherein the distance between the primary clamping surface and the secondary clamping surface in the clamping state is shorter than the distance between the primary clamping surface and the secondary clamping surface in the release state.

First claim

The invention claimed is:

1. A clamping tong for securing a mould item part in a mould for moulding the mould item part, the clamping tong comprising:
a primary tong segment comprising a primary clamping surface for applying clamping pressure on a clamping portion of the mould item part;
a secondary tong segment coupled to the primary tong segment and comprising a secondary clamping surface for applying clamping pressure on a clamping portion of the mould; and
a mould coupling element configured to be attached to the mould,
wherein the clamping tong is configured to change between a clamping state and a release state, wherein a distance between the primary clamping surface and the secondary clamping surface in the clamping state is shorter than a distance between the primary clamping surface and the secondary clamping surface in the release state, and
wherein the clamping tong further comprises a tong coupling element configured to releasably engage with the mould coupling element, wherein the tong coupling element is engaged with the mould coupling element in a storage configuration.

2. The clamping tong according to claim 1 , wherein the clamping tong can be arranged in an operating configuration, wherein the tong coupling element is disengaged with the mould coupling element in the operating configuration.

3. The clamping tong according to claim 1 , wherein the primary clamping surface of the primary tong segment applies clamping pressure on the clamping portion of the mould item part in the operating configuration and the secondary clamping surface of the secondary tong segment applies clamping pressure on the clamping portion of the mould, in the operating configuration.

4. The clamping tong according to claim 1 , wherein the primary clamping surface of the primary tong segment does not contact the mould item part in the storage configuration, and wherein the secondary clamping surface of the secondary tong segment does not contact the mould in the storage configuration.

5. The clamping tong according to claim 1 , wherein the mould coupling element comprises a primary element portion being substantially planar and a secondary element portion being substantially planar, the primary element portion joining the secondary element portion along a joint line, wherein a coupling element angle is formed between the primary element portion and the secondary element portion about the joint line.

6. The clamping tong according to claim 5 , wherein the coupling element angle is between 95-175 degrees.

7. The clamping tong according to claim 5 , wherein the primary element portion of the mould coupling element is configured to be attached to the mould.

8. The clamping tong according to claim 1 , wherein the mould coupling element is configured to be fixedly attached to the mould.

9. The clamping tong according to claim 1 , wherein the primary tong segment comprises the tong coupling element.

10. The clamping tong according to claim 1 , wherein the primary clamping surface is arranged on part of a surface of the tong coupling element.

11. The clamping tong according to claim 1 , wherein the tong coupling element comprises a magnetic tong element configured to magnetically attach to a magnetic mould element of the mould coupling element.

12. The clamping tong according to claim 11 , wherein the magnetic mould element of the mould coupling element is provided on a secondary element portion of the mould coupling element.

13. The clamping tong according to claim 1 , comprising a safety wire configured to restrict displacement of the clamping tong relative to the mould.

14. The clamping tong according to claim 13 , wherein the safety wire extends from the mould coupling element.

15. The clamping tong according to claim 13 , wherein the safety wire extends to the secondary tong segment.

16. The clamping tong according to claim 1 , wherein the primary clamping surface is provided with a friction enhancing material.

17. The clamping tong according to claim 16 , wherein the friction enhancing material is a rubber material.

18. A mould system for moulding a mould item, the mould system comprising:
a first mould for manufacturing a first mould item part of the mould item and a second mould for moulding a second mould item part of the mould item,
wherein the first mould has a first mould element with a first moulding surface for defining an outer shape of the first mould item part and a first support frame to support the first mould element,
wherein the second mould has a second mould element with a second moulding surface for defining an outer shape of the second mould item part and a second support frame to support the second mould element,
wherein the mould system is configured to position the first mould and the second mould such that the first moulding surface is facing the second moulding surface and such that the first mould item part may be bonded with the second mould item part so as to form the mould item,
wherein the mould system further comprises a first clamping tong, the first clamping tong comprising the clamping tong of claim 1 , and
wherein the mould coupling element of the first clamping tong is attached to the first mould at a first tong position.

19. The mould system according to claim 18 , wherein the mould coupling element of the first clamping tong is attached to the first support frame of the first mould.

20. The mould system according to claim 18 , comprising a plurality of clamping tongs, the plurality of clamping tongs including the first clamping tong, the plurality of clamping tongs being distributed along at least a part of the periphery of the first moulding surface.

21. The mould system according to claim 20 , wherein the plurality of clamping tongs includes a second clamping tong, the second clamping tong comprising the clamping tong of claim 1 , wherein the mould coupling element of the second clamping tong is attached to the first mould at a second tong position.

22. The mould system according to claim 18 , wherein the mould item is a blade shell of a wind turbine blade, and the first mould item part is a first shell part of the blade shell and the second mould item part is a second shell part of the blade shell.

Assignees

• Lm Wind Power As

Inventors

• Møller Jesper

Classifications

• B29L2031/082

  Blades, e.g. for helicopters · CPC title

• B29C33/26

  by pivotal movement · CPC title

• B25B5/064

  with clamping means pivoting around an axis perpendicular to the pressing direction (B25B5/122 takes precedence) · CPC title

• B29C33/202 Primary

  Clamping means operating on closed or nearly closed mould parts, the clamping means being independently movable of the opening or closing means (clamping devices for injection moulding machines B29C45/64) · CPC title

• F16B2/185

  using levers · CPC title