Wing I-shaped beam compression molding tool

Abstract

The invention discloses a compression molding tool for an I-shaped beam of a wing. The mold comprises a bottom plate, a molding boss is arranged on the bottom plate, outer side molding inserts are arranged on the two sides of the molding boss respectively, and an inner side molding insert is arranged between the two outer side molding inserts and located above the molding boss. And a plurality of pressing blocks are arranged above the outer side forming insert and the inner side forming insert. The inner side forming insert is of a split type and comprises two independent inserts which are connected through a connecting piece. Stop blocks are arranged on the two sides of the bottom plate. The mold has the advantages that the inner side forming insert is designed in a split mode and comprises the two independent inserts connected through the connecting piece, so that the inner side forming insert can be taken out step by step during demolding, and the demolding process is simpler and more convenient; the whole tool is made of carbon structural steel Q235, is not prone to deformation at high temperature and high pressure, is good in size stability and can meet the requirement for repeated use.

Description

Technical Field

[0001] The invention relates to a forming tool, in particular to a wing I-beam die pressing forming tool. Background Art

[0002] Carbon fiber composite structures, with their exceptional properties of light weight, high strength, high damage tolerance, and excellent moisture resistance, are widely used in aerospace applications. For example, ultralight composite wings, designed with multiple I-beams to maintain their weight while maintaining load-bearing capacity, are constructed from carbon fiber composites through a compression molding process. However, due to the high-temperature and high-pressure curing process, the molding tooling is prone to deformation, ultimately leading to dimensional instability and difficulty in demolding. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a wing I-beam compression molding tool with stable dimensions and easy demoulding.

[0004] In order to solve the above technical problems, the wing I-beam mold forming tooling of the present invention includes a base plate, a forming boss is provided on the base plate, outer forming inserts are respectively provided on both sides of the forming boss, and an inner forming insert is provided between the two outer forming inserts and above the forming boss; a plurality of clamping blocks are provided above the outer forming inserts and the inner forming inserts.

[0005] The inner molding insert is split, comprising two independent inserts connected by a connector.

[0006] Stop blocks are provided on both sides of the bottom plate.

[0007] The number of the compression blocks is four.

[0008] The molding surface roughness of the molding boss, the outer molding insert and the inner molding insert is Ra1.6.

[0009] The base plate, the forming boss, the outer forming insert, the inner forming insert, the pressing block and the stop block are made of carbon structural steel Q235.

[0010] The advantages of the present invention are: the inner forming insert adopts a split design, including two independent inserts connected by a connector, so that it can be taken out step by step during demoulding, and the demoulding process is simpler and more convenient; the overall material of the tooling is carbon structural steel Q235, which is not easy to deform under high temperature and high pressure, has good dimensional stability, and can meet the needs of repeated use. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the present invention in use; Figure 2 A schematic diagram of a molded product of the present invention; Figure 3 A perspective view of the present invention; Figure 4 This is a left side view of the present invention after removing the stopper; Figure 5 It is an exploded view of the present invention. DETAILED DESCRIPTION

[0012] The wing I-beam compression molding tooling of the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0013] like Figure 3 、 4 As shown in Figures 5 and 6, the die-forming tooling for a wing I-beam of the present invention is made entirely of carbon structural steel Q235 and comprises a base plate 1 with a forming boss 2 disposed thereon. Since the upper surface of the I-beam requires a certain slope, one side of the forming boss 2 is inclined. L-shaped outer forming inserts 3, one with an inclined surface and one without, are disposed on either side of the forming boss 2. An inner forming insert 4 is disposed between the two outer forming inserts 3 and above the forming boss 2. The inner forming insert 4 is split, comprising two independent inserts connected by a connector to facilitate separate removal during demolding. The insert closest to the inclined surface of the forming boss 2 has an inclined surface of the same slope, while the other insert has no slope. Four equally spaced pressing blocks 5 are disposed above the outer and inner forming inserts 3, 4, for gradually applying pressure to the inner forming insert 4. Stoppers 6 are disposed on either side of the base plate 1 to limit the inner forming insert 4 in the horizontal direction.

[0014] In order to ensure the processing accuracy and make the product easy to demould, the precision values ​​of the molding surface are designed as follows: flatness 0.8mm, straightness 0.8mm, roughness Ra1.6, dimensional tolerance -1 to -2mm. Figure 1 、 2As shown, the I-beam, which serves as the composite wing support, is made of carbon fiber prepreg. During actual production, its structure is disassembled into three components: upper, middle, and lower. The upper and lower components consist of two composite panels, and the middle portion includes two C-shaped structures. After prefabrication, these components are then molded using the tooling of the present invention under high temperature and high pressure. In use, the lower half of the C-shaped structure is first placed on the molding boss 2, and the upper half of the C-shaped structure is placed on the inner molding insert 4, which is connected by fasteners. After the two are assembled, the upper and lower composite panels are placed on either side of them, and the two outer molding inserts 3 are placed into corresponding slots on the base plate 1. Pressure is applied to the composite panels using an inclined surface. Then, a pressure block 5 is installed, pressing the outer molding inserts 3 downward until they contact the base plate 1. After installing the side panels 6 and tightening the fixing screws, the next step is to proceed to the next step. High temperature and high pressure are then applied to assemble the prefabricated components, ultimately completing the I-beam molding process. When demoulding, first loosen the fasteners of the inner molding insert 4, pull out the straight insert and then take out the insert with the inclined surface, and then remove the rest of the tooling in succession to achieve convenient demoulding.

[0015] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by technicians in this technical field within the essential scope of the present invention should also fall within the scope of protection of the present invention.

Claims

1. A wing I-beam compression molding tool, characterized by: The invention comprises a base plate (1), a forming boss (2) is provided on the base plate (1), outer forming inserts (3) are provided on both sides of the forming boss (2), an inner forming insert (4) is provided between the two outer forming inserts (3) and above the forming boss (2); and a plurality of pressing blocks (5) are provided above the outer forming inserts (3) and the inner forming inserts (4).

2. The wing I-beam compression molding tool according to claim 1, characterized in that: The inner molding insert (4) is split, comprising two independent inserts connected by a connector.

3. The wing I-beam compression molding tool according to claim 1 or 2, characterized in that: Stoppers (6) are provided on both sides of the bottom plate (1).

4. The wing I-beam molding tool according to claim 1, characterized in that: The number of the pressing blocks (5) is four.

5. The wing I-beam compression molding tool according to claim 1, characterized in that: The molding surface roughness of the molding boss (2), the outer molding insert (3) and the inner molding insert (4) is Ra1.

6.

6. The wing I-beam compression molding tool according to claim 3, characterized in that: The base plate (1), the forming boss (2), the outer forming insert (3), the inner forming insert (4), the pressing block (5) and the stop block (6) are made of carbon structural steel Q235.

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