CN222156728U

CN222156728U - Forming tool for open hollow composite part

Info

Publication number: CN222156728U
Application number: CN202420217484.4U
Authority: CN
Inventors: 汤春柳; 孔令权; 李虎; 祝旭杰; 范浩; 敖贵毅
Original assignee: Jiangsu Hengshen Co Ltd
Current assignee: Jiangsu Hengshen Co Ltd
Priority date: 2024-01-30
Filing date: 2024-01-30
Publication date: 2024-12-13
Anticipated expiration: 2034-01-30

Abstract

The utility model discloses a tool for forming an open hollow composite part, comprising: a mold body 1, the mold body 1 having a profile matching the inner surface of the open hollow composite part, and the axis of the open hollow composite part passes through the mold body 1; a mold body 2, the mold body 2 having a profile matching the inner surface of the open hollow composite part, and the profile of the mold body 2 covers the inner concave and/or inner convex components inside the open hollow composite part. The utility model has the characteristics of high molding quality of the part and easy demoulding after molding.

Description

Forming tool for open hollow composite part

Technical Field

The utility model belongs to the technical field of composite material molding, and particularly relates to an open hollow composite material part molding tool.

Background

The composite material has the advantages of light weight, high modulus, high strength, designability, high temperature resistance, excellent thermal stability, fatigue resistance, corrosion resistance, good manufacturability and the like, and is very suitable for the structure of the aerospace craft with extremely high requirements on bearing and light weight. With the continuous development of the composite material technology, the application level of the composite material in the aerospace field is continuously improved, the application range is continuously deep, and with the continuous development of the aerospace technology and the continuous deep development of the exploration field, the requirement for advanced composite materials is also improved.

The open hollow composite part with the inward convex and/or inward concave components is a common typical structure in the structure of an aerospace vehicle, the part generally has higher requirements on the internal quality, and more importantly, the open hollow composite part with the inward convex or inward concave components is ensured to be smoothly demolded after being molded, so that the high requirements on the molding equipment are met, a soft mold, a plaster mold, a soluble core mold and the like are generally adopted for a molding mold, but the molding quality of the part is difficult to reach the high quality requirements.

Disclosure of utility model

In order to solve the defects in the prior art, the utility model provides an open hollow composite product forming tool which has the characteristics of high product forming quality, easiness in demoulding after forming and the like.

The technical scheme includes that the forming tool for the open hollow composite part comprises a first die body, a second die body and a first die body, wherein the first die body is provided with a molded surface matched with the inner surface of the open hollow composite part, the axis of the open hollow composite part penetrates through the first die body, the second die body is provided with a molded surface matched with the inner surface of the open hollow composite part, and the molded surface of the second die body covers an inward concave and/or inward convex component inside the open hollow composite part.

Further, the connecting surface of the first die body and the second die body is parallel to the axis of the open hollow composite part.

Further, a set included angle is formed between the connecting surface of the first die body and the second die body and the axis of the open hollow composite part, and the vertex of the included angle is far away from the open end of the open hollow composite part.

Further, the first die body and the second die body are made of metal.

Further, the mold further comprises a base, and the first mold body and the second mold body are installed on the base after being assembled.

Further, cylindrical pins for positioning the first die body and the second die body are arranged on the base.

Further, the base is also provided with a universal hanging ring.

Compared with the prior art, the mold has the beneficial effects that the mold body I and the mold body II are arranged, the mold body I is provided with the molded surface matched with the inner surface of the open hollow composite part, the axis of the open hollow composite part penetrates through the mold body I, the mold body II is provided with the molded surface matched with the inner surface of the open hollow composite part, the molded surface of the mold body II covers the concave and/or convex components inside the open hollow composite part, and the mold has the characteristics of high molding quality of the part, easiness in demolding after molding and the like.

Drawings

FIG. 1 is a schematic view of the structure of an open hollow composite article of the present utility model;

FIG. 2 is a schematic view of a molded body structure for the open hollow composite article of FIG. 1;

FIG. 3 is a schematic structural view of a molding tool for the open hollow composite part of FIG. 1;

FIG. 4 is a schematic illustration of the open hollow replica manufactured by the molding tool of FIG. 3;

In the figure, a first die body, a second die body, a base, 4, a cylindrical pin, 5, a screw, 6 and a universal hanging ring are arranged.

Detailed Description

The utility model is further described below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present utility model, and are not intended to limit the scope of the present utility model.

Embodiment one:

An open hollow replica molding tool mainly comprises a first die body 1 and a second die body 2. The first die body 1 is provided with a molded surface matched with the inner surface of the open hollow composite part, the axis of the open hollow composite part penetrates through the first die body 1, the second die body 2 is provided with a molded surface matched with the inner surface of the open hollow composite part, and the molded surface of the second die body 2 covers the concave and/or convex components inside the open hollow composite part.

The forming tool for the open hollow composite part is suitable for forming and manufacturing the open hollow composite part with the concave component, the inward convex component or both the concave component and the inward convex component. This embodiment is specifically described in terms of an open hollow replica with an inwardly protruding member.

As shown in fig. 1-4, the forming tool for the open hollow composite member with the inward protruding member comprises a first die body 1, a second die body 2, a base 3, a cylindrical pin 4, a screw 5, a universal hanging ring 6, other finished products, standard products and the like.

The mold assembly comprises a mold assembly, wherein a mold assembly tool for an open hollow composite part with an inward convex member is made of a combined mold, the mold assembly is made of a metal material, the mold assembly is divided into a first mold assembly 1 and a second mold assembly 2 which are different in size, the first mold assembly 1 is provided with a molded surface matched with the inner surface of the open hollow composite part, the molded surface is smooth, the axis of the open hollow composite part penetrates through the first mold assembly 1, the second mold assembly 2 is provided with a molded surface matched with the inner surface of the open hollow composite part, the molded surface of the second mold assembly 2 covers the inward convex member in the open hollow composite part, namely, the molded surface is provided with a concave matched with the inward convex member in the open hollow composite part, the inner joint surfaces of the first mold assembly 1 and the second mold assembly 2 are provided with hook-shaped opposite-inserting locking mechanisms, and the first mold assembly 1 and the second mold assembly 2 are fixedly mounted on a base 3 through cylindrical pins 4 and bolts 5.

And (3) paving and bagging and curing, namely paving fiber prepreg on the molded surface formed by the first die body 1 and the second die body 2 according to the structural design of a product by forming a molding tool by the first die body 1, the second die body 2 and the base 3 through an internal locking mechanism, a cylindrical pin 4 and a screw 5, and vacuum bagging the base 3 after the paving is finished, and heating, pressurizing, curing and molding the product in an autoclave under the requirement of a curing system.

The die body I is larger than the die body II 2 in size, the die body II is axially removed firstly when the die body I is removed, the partial molded surface of the die body II is provided with a concave and a part inner convex molded surface which are mutually attached, a large part of cavity space is formed in the composite part after the die body I is removed, at the moment, the die body II with the concave molded surface is moved towards the axis along the radial direction relative to the part, and the die body II is axially moved to be removed after the concave on the die body II and the part inner convex member on the part are completely removed.

The forming tool meets the male die forming requirement of an open hollow composite part with an inward convex member, the connecting surface of the first die body 1 and the second die body 2 is parallel to the axis of the open hollow composite part, the problem that the inner convex hollow composite part cannot be demoulded after being solidified and formed is solved through the parting combined male die structure, the problem that the inner convex hollow composite part with similar configuration cannot be demoulded can be solved through the reasonable parting combined structure, and the common use requirement exists in the production process of the hollow composite part with the inward convex opening.

According to the forming tool, the first die body 1 and the second die body 2 are made of metal materials, so that the problems of low forming precision and large error caused by using soft dies such as a soft die, a plaster die and a soluble core die can be avoided. The first die body 1 and the second die body 2 can be made of metal materials, and other hard materials can be used as the forming die bodies.

According to the forming tool disclosed by the utility model, the vacuum bag is manufactured on the base, so that the air tightness requirement of the die body is met, and the structure of the combined die and the air leakage risk are simplified as long as the air tightness requirement of the base is ensured. The utility model can reasonably select parting surfaces and appropriately increase and decrease the sizes and the numbers of the die bodies so as to meet the molding requirements of hollow composite products with inward convex openings with different structures.

The forming tool is simple in structure and few in assembly parts, the cylindrical pins 4 used for positioning the first die body and the second die body are arranged on the base, the disassembly and the assembly are convenient, the operation are simple, the universal hanging ring 6 is arranged, the tool is convenient to carry and move, the operation level requirement on operators is low, and the labor intensity of the operators is greatly reduced. The tool uses the machining parts, the standard parts and the like with simple configurations, has simple and compact overall structure, is convenient to debug and maintain, has low manufacturing cost and reliable work, and has general use requirements in the production process of hollow composite parts with inward convex openings.

Embodiment two:

The difference between the first embodiment and the second embodiment is that the connecting surface of the first die body 1 and the second die body 2 forms a set included angle with the axis of the open hollow composite part, and the vertex of the included angle is far away from the open end of the open hollow composite part, that is, the first die body 1 and the second die body 2 realize quick demoulding through a wedge structure, which is more beneficial to the quick release of the first die body 1 along the axial direction.

The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and variations could be made by those skilled in the art without departing from the technical principles of the present utility model, and such modifications and variations should also be regarded as being within the scope of the utility model.

Claims

1. An open hollow replica piece shaping frock, which is characterized in that includes:

The first die body (1) is provided with a molded surface matched with the inner surface of the open hollow composite part, and the axis of the open hollow composite part penetrates through the first die body (1);

The second die body (2) is provided with a molded surface matched with the inner surface of the open hollow composite part, and the molded surface of the second die body (2) covers the concave and/or convex component inside the open hollow composite part.

2. The open-ended hollow replica molding tooling according to claim 1, wherein the connecting surface of the first mold body (1) and the second mold body (2) is parallel to the axis of the open-ended hollow replica.

3. The tooling for forming the open hollow composite part according to claim 1, wherein a connecting surface of the first die body (1) and the second die body (2) forms a set included angle with the axis of the open hollow composite part, and the vertex of the included angle is far away from the open end of the open hollow composite part.

4. The open hollow composite part forming tool according to claim 1, wherein the first die body (1) and the second die body (2) are made of metal.

5. The open hollow composite part forming tool according to claim 1, further comprising a base (3), wherein the first die body (1) and the second die body (2) are assembled and then mounted on the base (3).

6. The open hollow composite part forming tool according to claim 5, wherein cylindrical pins (4) for positioning the first die body (1) and the second die body (2) are arranged on the base (3).

7. The open hollow composite part forming tool according to claim 5, wherein the base (3) is further provided with a universal hanging ring (6).