Composite part forming device

Abstract

The utility model discloses a composite part forming device which is a glass fiber reinforced plastic auxiliary mold and / or a silica gel mold, and the inner molded surfaces of the glass fiber reinforced plastic auxiliary mold and the silica gel mold are matched with the outer molded surface of a part to be formed. The device can ensure the quality of the composite material part, reduces repair or scrapping, and has considerable economic benefits.

Description

Technical Field

[0001] This utility model belongs to the field of composite material parts molding technology, and in particular, a composite material parts molding device. Background Technology

[0002] The autoclave molding process involves first laying multiple layers of prepreg on the surface of a metal mold, then adding auxiliary materials for sealing, and finally placing it inside an autoclave for heating and pressurization. Autoclave molding requires only one metal female mold or metal male mold to form parts that are relatively large or have slightly complex structures.

[0003] However, autoclave forming also has certain drawbacks when forming parts with complex curved surfaces:

[0004] (1) The appearance quality of one side of the molded part is poor and the thickness is uneven;

[0005] (2) Complex curved surface parts are prone to wrinkles and glue shortage. Utility Model Content

[0006] Utility Model Purpose

[0007] In order to overcome the problems of rough surface, uneven thickness, and lack of glue on complex curved surfaces in existing autoclave molded parts, this utility model provides a composite part molding device.

[0008] Utility Model Technical Solution

[0009] A composite part forming apparatus, the apparatus being a fiberglass auxiliary mold and / or a silicone mold, wherein the inner surface of the fiberglass auxiliary mold and the silicone mold is adapted to the outer surface of the part to be formed.

[0010] Preferably, the fiberglass auxiliary mold has a uniform thickness.

[0011] Preferably, the silicone mold has a uniform thickness.

[0012] Preferably, the thickness of the fiberglass auxiliary mold is 0.8mm to 1.5mm.

[0013] Preferably, the thickness of the silicone mold is 1mm to 2mm.

[0014] Preferably, the fiberglass auxiliary mold is based on the part and is formed by autoclaving fiberglass prepreg.

[0015] Preferably, the silicone mold is formed by applying liquid silicone to the surface of the part molding die and then using room temperature vulcanization molding.

[0016] Preferably, during the autoclave molding of the parts, the fiberglass auxiliary mold is placed between the isolation membrane and the breathable felt.

[0017] Preferably, during the autoclave molding of the part, the silicone mold is placed between the part and the release liner.

[0018] The advantages of this invention are: This device can ensure the quality of composite material parts, reduce rework or scrap, and offer considerable economic benefits. A single fiberglass mold and silicone mold can be used more than 100 times, resulting in low cost. The device has advantages such as simple structure and reusability, and can be verified and applied in subsequent models, demonstrating broad application potential. Attached Figure Description

[0019] Figure 1 This is a schematic diagram illustrating the usage of a composite material forming device according to this utility model.

[0020] Figure 2 This is a schematic diagram of a fiberglass mold.

[0021] Figure 3 This is a schematic diagram of a silicone mold.

[0022] In the diagram: 1-part, 2-fiberglass auxiliary mold, 3-silicone mold, 4-metal mold. Detailed Implementation

[0023] This utility model is achieved through the following technical solution.

[0024] A composite part molding apparatus includes a fiberglass auxiliary mold and / or a silicone mold, wherein the inner surfaces of the fiberglass auxiliary mold and the silicone mold are adapted to the outer surfaces of the parts to be molded. Depending on the molding requirements of the parts, only the fiberglass auxiliary mold, only the silicone mold, or both the fiberglass auxiliary mold and the silicone mold can be used simultaneously.

[0025] The fiberglass auxiliary mold has a uniform thickness. In this embodiment, the thickness of the fiberglass auxiliary mold is 0.8mm to 1.5mm. The fiberglass auxiliary mold is based on part 1 and is formed by autoclaving fiberglass prepreg.

[0026] The silicone mold has a uniform thickness. In this embodiment, the silicone mold thickness is 1mm to 2mm. The silicone mold is formed by applying liquid silicone to the surface of the part molding die and then vulcanizing it at room temperature.

[0027] When part 1 is formed in an autoclave, a fiberglass auxiliary mold is placed between the isolation membrane and the breathable felt.

[0028] When part 1 is hot-pressed, a silicone mold is placed between the part and the release liner.

[0029] Method for making fiberglass auxiliary mold for autoclave molding of composite parts: Based on part 1, make fiberglass auxiliary mold 2.

[0030] First, the composite parts are formed using metal forming molds. Then, the surface of the composite parts is polished smooth. Using the composite parts as the base mold, fiberglass prepreg is laid with a thickness of 0.8mm-1.5mm. Then, auxiliary materials are used for encapsulation. After completion, the parts are placed in an autoclave for forming. After cutting, the fiberglass auxiliary tooling required for forming the parts can be obtained.

[0031] b) Method for making silicone molds for autoclave molding of composite parts: Based on the part molding mold, make silicone molds.

[0032] First, select a high-temperature resistant liquid silicone that is easy to mold at room temperature. Apply the liquid silicone to the metal mold 4 of the part, ensuring that the thickness of each coating is 0.1mm-0.15mm. After each coating is applied, let it dry for more than 30 minutes. The final thickness of the molded silicone can be controlled between 1mm and 2mm depending on the complexity of the part.

[0033] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be used to limit the protection scope of this utility model. All equivalent transformations or modifications made in accordance with the spirit and essence of this utility model should be covered within the protection scope of this utility model. The technologies, shapes, and structures not described in detail in this utility model are all known technologies.

Claims

1. A composite material forming apparatus, characterized in that, The device is a fiberglass auxiliary mold and / or a silicone mold, the inner surface of which is compatible with the outer surface of the part to be molded.

2. The composite part forming apparatus as described in claim 1, characterized in that, The fiberglass auxiliary mold has a uniform thickness.

3. The composite part forming apparatus as described in claim 1, characterized in that, The silicone mold has a uniform thickness.

4. The composite part forming apparatus as described in claim 2, characterized in that, The thickness of the fiberglass auxiliary mold is 0.8mm to 1.5mm.

5. The composite part forming apparatus as described in claim 3, characterized in that, The thickness of the silicone mold is 1mm to 2mm.

6. The composite part forming apparatus as described in claim 1, characterized in that, The fiberglass auxiliary mold is based on the parts and is formed by autoclaving fiberglass prepreg.

7. The composite part forming apparatus as described in claim 1, characterized in that, Silicone molds are formed by applying liquid silicone to the surface of the part molding die and then vulcanizing it at room temperature.

8. The composite part forming apparatus as described in claim 1, characterized in that, When the parts are hot-pressed and molded, the fiberglass auxiliary mold is placed between the isolation membrane and the breathable felt.

9. The composite part forming apparatus as described in claim 1, characterized in that, When the parts are hot-pressed and molded, a silicone mold is placed between the parts and the release liner.

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