A composite material multi-step platform and its high-quality forming method

Abstract

The invention relates to a composite material multi-step platform and a high-quality forming method thereof. The method: providing a hard mold; determining the theoretical thickness of each step of the composite material ladder, determining the compression amount according to the theoretical thickness and the actual thickness of each step; selecting a low modulus material matching the compression amount as a replacement material, and according to the low modulus According to the matching relationship between the thickness and modulus of the measured material, the thickness of the low modulus material is determined; according to the principle of equal thickness replacement, the replaced thickness of the hard mold is determined, and the hard mold is machined; the low modulus material of the corresponding thickness Bonding on the machined hard mold to make a forming mold; laying the composite material on the forming mold, closing the mold, and then curing and demolding to obtain a multi-step platform of the composite material. The invention solves the problem of non-uniform pressurization under the working condition of steps of different heights of composite material parts, and has outstanding advantages such as low cost and high molding quality compared with traditional hard forming of multi-step platforms of composite materials.

Description

technical field

[0001] The invention belongs to the technical field of composite material multi-step platform molding, and in particular relates to a molding die for composite material multi-step platform molding and a manufacturing method thereof, a composite material multi-step platform and a high-quality molding method thereof. Background technique

[0002] The multi-step platform structure is a typical and common structural form in industrial products. At present, the molding of the multi-step platform is usually directly formed by a hard mold or formed by a soft film. However, for the hard mold, it is difficult to ensure the coordinated pressure of each step, and for the soft membrane, the dimensional accuracy such as the thickness and contour of the outer surface cannot be guaranteed.

[0003] Therefore, how to solve the above-mentioned existing problems and deficiencies is an urgent research and development problem for relevant industry players.

[0004] Therefore, ...

Examples

Embodiment 1

[0058] For a 2mm-high composite ladder formed by a high step of 4mm and a low step of 2mm, the high-quality molding method includes the following steps:

[0059] ①Using P20 die steel (hard die steel) machine plus hard die.

[0060] ② Determine the compression amount of the composite material step (composite material step): 4*0.1=0.4 for the high step, 2*0.1=0.2 for the low step, and 1MPa for high-quality molding pressure (curing pressure).

[0061] 3. It is determined that the replacement material is rubber (low modulus material), and its compression modulus is 7.8MPa, and the thickness of the low modulus material is matched with the modulus of the low modulus material:

[0062]

[0063] Determine the thickness of the replacement rubber: the high step is determined to be 3.12mm, and the low step is determined to be 1.56mm.

[0064] ④ According to the principle of equal thickness replacement, determine the replacement thickness of the high modulus material on the side of th...

technical field

[0001] The invention belongs to the technical field of composite material multi-step platform molding, and in particular relates to a molding die for composite material multi-step platform molding and a manufacturing method thereof, a composite material multi-step platform and a high-quality molding method thereof. Background technique

[0002] The multi-step platform structure is a typical and common structural form in industrial products. At present, the molding of the multi-step platform is usually directly formed by a hard mold or formed by a soft film. However, for the hard mold, it is difficult to ensure the coordinated pressure of each step, and for the soft membrane, the dimensional accuracy such as the thickness and contour of the outer surface cannot be guaranteed.

[0003] Therefore, how to solve the above-mentioned existing problems and deficiencies is an urgent research and development problem for relevant industry players.

[0004] Therefore, ...

Examples

Embodiment 1

[0058] For a 2mm-high composite ladder formed by a high step of 4mm and a low step of 2mm, the high-quality molding method includes the following steps:

[0059] ①Using P20 die steel (hard die steel) machine plus hard die.

[0060] ② Determine the compression amount of the composite material step (composite material step): 4*0.1=0.4 for the high step, 2*0.1=0.2 for the low step, and 1MPa for high-quality molding pressure (curing pressure).

[0061] 3. It is determined that the replacement material is rubber (low modulus material), and its compression modulus is 7.8MPa, and the thickness of the low modulus material is matched with the modulus of the low modulus material:

[0062]

[0063] Determine the thickness of the replacement rubber: the high step is determined to be 3.12mm, and the low step is determined to be 1.56mm.

[0064] ④ According to the principle of equal thickness replacement, determine the replacement thickness of the high modulus material on the side of th...

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