MOLD, MOLDING JIG AND MOLDING METHOD

• US 20140008009A1
• Filed: 12/26/2011
• Published: 01/09/2014
• Est. Priority Date: 12/27/2010
• Status: Active Grant

• Current Assignee: Kawasaki Jukogyo Kabushiki Kaisha
• Original Assignee: Kawasaki Jukogyo Kabushiki Kaisha
• Inventors: Sana, Toshikazu, Takahashi, Tomoya, Sakai, Akihito, Murai, Akiro, Takenaka, Yasuhiro, Kawano, Kazuyoshi
• Granted Patent: US 9,409,361 B2
• Time in Patent Office: Days
• US Class Current: 156/213
• CPC Class Codes: B29C 2043/3652 Elastic moulds or mould parts, e.g. cores or inserts
• CPC Class Codes: B29C 2043/3655 Pressure transmitters, e.g. caul plates; pressure pads
• CPC Class Codes: B29C 33/0011 thin-walled moulds
• CPC Class Codes: B29C 43/3642 Bags, bleeder sheets or cauls for isostatic pressing
• CPC Class Codes: B29C 70/30 Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
• CPC Class Codes: B29C 70/32 on a rotating mould, former or core
• CPC Class Codes: B29C 70/342 using isostatic pressure
• CPC Class Codes: B29C 70/543 Fixing the position or configuration of fibrous reinforcements before or during moulding for non-woven fabrics D04H3/08
• CPC Class Codes: B29D 99/001 Producing wall or panel-like structures, e.g. for hulls, fuselages, or buildings articles with hollow walls B29D24/00
• CPC Class Codes: B29K 2995/0008 Magnetic or paramagnetic
• CPC Class Codes: B29L 2031/3082 Fuselages
• CPC Class Codes: B64F 5/10 Manufacturing or assembling aircraft, e.g. jigs therefor
• CPC Class Codes: Y02T 50/40 Weight reduction
• CPC Class Codes: Y10T 156/103 Encasing or enveloping the configured lamina

Abstract

A mold (10) according to the present invention is a mold for molding a surface of a laminate (60) when curing the laminate (60) obtained by laminating prepreg (62). The mold (10) has a planar plate shape and elastically deforms from the planar plate shape into a shape corresponding to a shape of the laminate (60), thereby being capable of coming tight into contact with the laminate (60). Thereby, a mold which is easy to handle can be provided.

Claims

1. A mold used for molding a surface of a laminate when curing the laminate obtained by laminating prepreg,

the mold having a planar plate shape, and elastically deforming from the planar plate shape into a shape corresponding to a shape of the laminate so as to come into tight contact with the laminate.

2. The mold according to claim 1, wherein the mold is made of a fiber-reinforced plastic.

3. The mold according to claim 2, wherein a thickness is 1.5 mm±

0.5 mm.

4. A molding jig comprising:

the mold according to claim 1; and

a retaining mechanism that brings the mold into tight contact with the laminate.

5. The molding jig according to claim 4, wherein the retaining mechanism includes

a retaining belt which is stretched and fastenable over an outside surface of the mold, and

a plurality of spacers interposed between the mold and the retaining belt.

6. The molding jig according to claim 5, wherein the plurality of spacers includes spacers which differ in height,

the laminate has a cylindrical shape, and when the retaining belt is stretched in an axial direction of the laminate, each spacer included in the plurality of spacers is arranged in an ascending order of height toward a center of the retaining belt.

7. The molding jig according to claim 4, wherein the prepreg is laminated on a core die serving as a magnetic body, and

the retaining mechanism includes a plurality of retaining magnets that generates magnetism and is absorbable to the core die via the mold and the laminate.

8. The molding jig according to claim 7, wherein the retaining magnet is configured to generate strong magnetism only from one surface.

15. A molding jig comprising:

the mold according to claim 2; and

a retaining mechanism that brings the mold into tight contact with the laminate.

16. A molding jig comprising:

the mold according to claim 3; and

a retaining mechanism that brings the mold into tight contact with the laminate.

9. A molding method comprising:

a laminating step of forming a laminate by laminating prepreg,

a coating step of bringing a flexible mold of a planar plate shape into tight contact with the laminate while deforming the flexible mold into a shape corresponding to a shape of the laminate, and

a curing step of curing the laminate in a state in which the mold is kept in tight contact with the laminate.

10. The molding method according to claim 9, wherein in the coating step, the mold is brought into tight contact with the laminate by stretching a retaining belt over an outside surface of the mold, arranging a plurality of spacers between the retaining belt and the mold, and tightly fastening the retaining belt.

11. The molding method according to claim 10, wherein the laminate has a cylindrical shape, and

in the coating step, the retaining belt is stretched in an axial direction of the laminate and the plurality of spacers is arranged in an ascending order of height toward a center of the retaining belt.

12. The molding method according to claim 9, wherein the prepreg is laminated on a core die serving as a magnetic body, and

in the coating step, a plurality of retaining magnets that generates magnetism is absorbed onto the core die via the mold and the laminate so that the mold is brought into tight contact with the laminate.

13. The molding method according to claim 12, wherein the laminate has a cylindrical shape, and

in the coating step the plurality of retaining magnets is arranged uniformly in an axial direction of the mold as well as uniformly in a circumferential direction of the mold.

14. The molding method according to claim 11, wherein in the coating step, when bringing the mold into tight contact with an entire circumference of the laminate, work of bringing the mold into tight contact with the laminate always from a side of the laminate is performed by rotating the laminate.

17. The molding method according to claim 13, wherein in the coating step, when bringing the mold into tight contact with an entire circumference of the laminate, work of bringing the mold into tight contact with the laminate always from a side of the laminate is performed by rotating the laminate.