A high density foam parts co-curing tooling

Abstract

This invention relates to a co-curing tooling for high-density foam material parts, belonging to the field of aerospace composite material manufacturing technology. It includes a base plate, a main mold body, filler components, and external insert components. The main mold body is vertically inserted into the base plate. The external insert components and filler components are sequentially fitted onto the main mold body from the outside in and fixed to the base plate. The outer surfaces of the main mold body and external insert components provide a bonding area, and the upper surface of the filler components is a flat surface providing a bonding area. This invention enables the co-curing of multiple parts in a single process, reducing single-batch production time to approximately 12 hours. This tooling simplifies the operation process, improves production efficiency, and makes the manufacturing of product parts faster and more efficient. This molding tooling is expected to reduce manufacturing costs and enhance the competitiveness of the aerospace industry. This invention solves the problems of difficult bonding and demolding of similar products. This method is applicable to the molding and demolding difficulties of products such as lips and air intakes.

Description

Technical Field

[0001] This utility model belongs to the field of aerospace composite material manufacturing technology, specifically relating to a co-curing tooling for high-density foam material parts. Background Technology

[0002] In the aerospace industry, tooling and molds serve as the "invisible cornerstone" of efficient and precision aircraft manufacturing. Although they do not directly constitute the final components of an aircraft, they are an indispensable core support system in the aircraft manufacturing process. Like the "skeleton" and "nerves" of precision manufacturing, they permeate the entire process, including composite molding, parts processing, assembly, and inspection, directly impacting aircraft quality, cost, and development cycle. Especially with the pursuit of lightweight, high-performance composite structures, and agile manufacturing in new aircraft, the technological level of tooling and molds has become a key indicator for measuring aerospace manufacturing capabilities. Therefore, this research project on co-curing tooling for high-density foam material parts aims to address existing problems and develop efficient, precise, and easy-to-operate co-curing tooling for high-density foam material parts through innovative design and manufacturing technologies to meet the high-performance requirements of modern aircraft in terms of materials and precision.

[0003] The existing tooling currently has the following problems: the product surface quality is substandard, with defects and delamination; demolding is difficult, the metal mold is divided into too many sections, making assembly and disassembly difficult; there are wrinkles inside the product, resulting in a low pass rate; the positioning of the inner and outer molds of the tooling is inaccurate; and there are errors in product mating. Summary of the Invention

[0004] In order to solve the problems existing in the prior art, this utility model provides a co-curing tooling for parts made of high-density foam material.

[0005] The technical solution adopted by this utility model is: A co-curing fixture for high-density foam material parts includes a base plate, a main mold body, a filler block assembly, and an external insert assembly. The main mold body is vertically inserted into the base plate. The external insert assembly and the filler block assembly are sequentially fitted onto the main mold body from the outside to the inside and fixed to the base plate. The outer surfaces of the main mold body and the external insert assembly provide a laying area, and the upper surface of the filler block assembly is a plane that provides a laying area.

[0006] Furthermore, the base plate is made of Q235 material, and multiple lifting ring mounting holes are arranged around the base plate for connecting lifting rings.

[0007] Furthermore, the main mold body is made of PMI foam, and the main mold body and the base plate are positioned by contour grooves.

[0008] Furthermore, the filler assembly includes filler block one and filler block two; the filler block one and filler block two have a central cavity in their structure, which, when combined, can be fitted onto the main mold body through the cavity; the upper part of filler block one and filler block two is provided with a paving platform protruding from the lower part; the lower part of filler block one and filler block two is positioned and connected to the base plate by guide pins installed on the base plate.

[0009] Furthermore, the material of filler block one and filler block two is PMI foam.

[0010] Furthermore, the external insert assembly includes outer movable block one, outer movable block two, and outer movable block three; outer movable block one, outer movable block two, and outer movable block three are arranged around the lower part of filler block one and filler block two, outer movable block one, outer movable block two, and outer movable block three are respectively fixedly connected to the base plate, and outer movable block one, outer movable block two, and outer movable block three are provided with demolding grooves, and outer movable block one, outer movable block two, and outer movable block three are respectively provided with elongated holes and multiple bolt holes, and are fixed to the base plate by positioning pins and fixing bolts.

[0011] Furthermore, the material of the outer movable block one, outer movable block two, and outer movable block three is Q235.

[0012] Compared with the prior art, the present invention has the following advantages: 1. Improved Efficiency: Multiple parts are co-cured and molded in a single process, reducing single-batch production time to approximately 12 hours or more. This utility model's tooling simplifies the operation process, improves production efficiency, and makes the manufacturing of product parts faster and more efficient.

[0013] 2. Cost reduction: By adopting more advanced materials and manufacturing processes, the processing time of molds is shortened and the demolding time is reduced. The molding tooling of this utility model is expected to reduce manufacturing costs and improve the competitiveness of the aviation industry.

[0014] 3. This utility model solves the problems of similar products being difficult to lay and demold. This method is applicable to the molding and demolding problems of products such as lips and air inlets. Attached Figure Description

[0015] Figure 1 This is an isometric drawing of this utility model; Figure 2 This is a top view of the present invention; Figure 3 This is an isometric view of the base plate and main mold body of this utility model; Figure 4 This is an isometric view of the base plate, main mold body, filler block one, and filler block two of this utility model; Figure 5 This is a sectional view of the base plate, main mold body, filler block one, and filler block two of this utility model; Figure 6This is an isometric view of the base plate, main mold body, filler block one, filler block two, outer movable block one, outer movable block two, and outer movable block three of this utility model; Figure 7 This is an isometric schematic diagram of a certain product; The components are: 1. Base plate; 2. Main mold body; 3. Filler block one; 4. Filler block one; 5. Outer movable block one; 6. Outer movable block two; 7. Outer movable block three; 8. Guide pin; 9. Lifting ring; 1-1. Product part one; 1-2. Product part two; 1-3. Product part three. Detailed Implementation

[0016] To better understand the purpose, structure, and function of this utility model, a more detailed description of this utility model will be provided below with reference to the accompanying drawings.

[0017] like Figures 1-7 As shown, a co-curing fixture for high-density foam material parts includes a base plate 1, a main mold body 2, a filler block assembly, and an external insert assembly. The main mold body 2 is vertically inserted into the base plate 1. The external insert assembly and the filler block assembly are sequentially fitted onto the main mold body 2 from the outside to the inside and fixed onto the base plate 1. The outer surfaces of the main mold body 2 and the external insert assembly provide a laying area, and the upper surface of the filler block assembly is a plane that provides a laying area.

[0018] like Figure 1 , Figure 2 As shown, the base plate 1 is made of Q235. Locating pin holes and screw mounting holes are provided on the base plate 1 for connecting the filler block assembly and the external insert assembly, respectively. Multiple lifting ring mounting holes are arranged around the base plate 1 for connecting lifting rings 9, and the overall flow, transfer and other operations are realized through the lifting rings 9.

[0019] like Figure 3 As shown, the main mold body 2 is made of PMI foam. The selected material has the characteristics of hard surface strength and is not prone to defects or pits after processing. The main mold body 2 and the base plate 1 are positioned by contour grooves.

[0020] like Figure 4 , Figure 5 As shown, the filler assembly includes filler block 3 and filler block 4; the filler block 3 and filler block 4 have a central cavity in their structure, which, when combined, can be fitted onto the main mold body 2 through the cavity. The upper part of filler block 3 and filler block 4 is provided with a paving platform that protrudes from the lower part, and the lower part of filler block 3 and filler block 4 is positioned and connected to the base plate 1 by a guide pin 8 installed on the base plate 1.

[0021] The material of filler block 3 and filler block 4 is PMI foam.

[0022] The outer loose block 1 5, outer loose block 2 6, and outer loose block 3 7 are covered with part 1-1 of a certain product. After the filler block 1 3 and filler block 2 4 are covered with part 1-1 of a certain product, they are assembled. Then, part 1-2 of a certain product needs to be covered on top of filler block 1 3 and filler block 2 4.

[0023] Main mold body 2 is used to lay out product parts 3-3 of a certain product.

[0024] like Figure 6 As shown, the external insert assembly includes outer movable block 5, outer movable block 6, and outer movable block 7; the outer movable blocks 5, 6, and 7 are arranged around the lower parts of filler block 3 and filler block 4. Outer movable blocks 5, 6, and 7 are fixedly connected to the base plate 1. Each of these blocks has a demolding groove, an elongated hole, and multiple bolt holes, and is secured to the base plate 1 using locating pins and fixing bolts. The elongated holes provide some movement allowance after the block enters the autoclave, and under the action of the vacuum bag, they can provide a certain pressure to the product. After all the tiling work is completed, remove the fixing screws and positioning pins, leaving only the long oval hole pins, and leave some slack to apply pressure to the product.

[0025] The material of the outer movable block 1 5, outer movable block 2 6, and outer movable block 3 7 is Q235.

[0026] Specific implementation method one: as follows Figures 1-6 As shown, this embodiment discloses a tooling structure using high-density foam parts for co-curing, and the method of using it includes the following steps: Step 1: Move the molded fixture into the clean room, clean the surface of the fixture, and assemble each component according to the function of the fixture; Step 2: Remove filler block 1 (3) and filler block 2 (4), and check whether the main mold body 2 is properly installed on the base plate 1; Step 3: Place product parts 3-3 and 1-1 on the main mold body 2, outer movable block 1-5, outer movable block 2-6, and outer movable block 3-7. Be careful not to let the main mold body 2 move on the base plate 1.

[0027] Step 4: Install filler block 1 (3) and filler block 2 (4) onto base plate 1, and check that they are securely installed; Step 5: Place product part 2 (1-2) on filler block 1 (3) and filler block 2 (4); Step 6: Remove the fixing bolts and positioning pins on the outer movable block 1 5, outer movable block 2 6, and outer movable block 3 7 from the base plate 1, leaving only the positioning pin at the elongated hole; Step 7: Encapsulation, container loading, and curing; Step 8: After cooling and unloading from the can, first remove the outer vacuum bag, then remove outer movable block 1 5, outer movable block 2 6, and outer movable block 3 7 from the bottom plate 1; Step 9: Then, the outer filler block 1 (3) and outer filler block 2 (4) can be removed on the base plate 1. Be careful not to damage the product. Step 10: Finally, remove the product parts and main mold body 2 as a whole from the base plate 1. Destroy and remove the main mold body 2 under the frame, taking care to protect the product parts.

[0028] Step 11: Perform subsequent edge trimming, inspection, and other processes.

[0029] The required ambient temperature and humidity conditions are 18-22℃ and 45-65% respectively. This is to avoid layup defects and ensure the quality of part molding.

[0030] The materials for filler block 1 (3), filler block 2 (4), and main mold body 2 are all PMI foam. In the past, metal materials such as Q235 were used, but they are not suitable for the parts of this product, which would result in too many blocks, complicated positioning, and difficulty in demolding. However, this molding process uses PMI foam as the tooling material, which solves the problems of difficult demolding and no block division, and is also inexpensive.

[0031] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A tooling for co-curing parts using high-density foam material, characterized in that: It includes a base plate (1), a main mold body (2), a filler block assembly and an external insert assembly; the main mold body (2) is vertically inserted into the base plate (1), and the external insert assembly and the filler block assembly are sequentially fitted onto the main mold body (2) from the outside to the inside and fixed on the base plate (1). The outer surfaces of the main mold body (2) and the external insert assembly provide a paving area, and the upper surface of the filler block assembly is a plane that provides a paving area.

2. The co-curing fixture for high-density foam material parts according to claim 1, characterized in that: The base plate (1) is made of Q235 material, and multiple lifting ring mounting holes are arranged around the base plate (1) for connecting lifting rings (9).

3. The co-curing tooling for high-density foam material parts according to claim 1, characterized in that: The main mold body (2) is made of PMI foam, and the main mold body (2) and the base plate (1) are positioned by contour grooves.

4. The co-curing fixture for high-density foam material parts according to claim 1, characterized in that: The filler assembly includes filler block one (3) and filler block two (4); the middle cavity of filler block one (3) and filler block two (4) can be fitted onto the main mold body (2) after being combined. The upper part of filler block one (3) and filler block two (4) is provided with a paving platform that protrudes from the lower part. The lower part of filler block one (3) and filler block two (4) is positioned and connected to the base plate (1) by guide pins (8) installed on the base plate (1).

5. The co-curing fixture for high-density foam material parts according to claim 4, characterized in that: The material of filler block one (3) and filler block two (4) is PMI foam.

6. The co-curing fixture for high-density foam material parts according to claim 5, characterized in that: The external insert assembly includes an outer movable block one (5), an outer movable block two (6), and an outer movable block three (7); the outer movable blocks one (5), outer movable blocks two (6), and outer movable blocks three (7) are arranged around the lower part of the filler block one (3) and the filler block two (4). Outer movable block 1 (5), outer movable block 2 (6), and outer movable block 3 (7) are fixedly connected to the base plate (1) respectively. Outer movable block 1 (5), outer movable block 2 (6), and outer movable block 3 (7) are provided with demolding grooves. Outer movable block 1 (5), outer movable block 2 (6), and outer movable block 3 (7) are provided with elongated holes and multiple bolt holes respectively, and are fixed to the base plate (1) by positioning pins and fixing bolts.

7. The co-curing fixture for high-density foam material parts according to claim 6, characterized in that: The material of the outer movable block one (5), outer movable block two (6), and outer movable block three (7) is Q235.

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