Opening hollow composite workpiece forming tool

Abstract

The utility model discloses an open hollow composite workpiece forming tool which comprises a first die body, a second die body, a third die body and a fourth die body, the first die body is provided with a molded surface matched with the inner surface of an open hollow composite workpiece, and the axis of the open hollow composite workpiece penetrates through the first die body; and the second die body is provided with a molded surface matched with the inner surface of the open hollow composite workpiece, and the molded surface of the second die body covers an inner concave component and / or an inner convex component in the open hollow composite workpiece. The die has the characteristics of high workpiece forming quality, easiness in demolding after forming and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of composite material molding, and in particular relates to an open hollow composite material part molding tool. Background Art

[0002] Composite materials are very suitable for aerospace structures that have extreme requirements for load-bearing and lightweight because of their advantages of light weight, high modulus, high strength, designability, high temperature resistance, excellent thermal stability, fatigue resistance, corrosion resistance, and good processability. With the continuous development of composite material technology, its application level in the aerospace field is constantly improving and its application scope is constantly deepening. With the continuous development of aerospace technology and the continuous deepening of exploration fields, the demand for advanced composite materials is also increasing.

[0003] Open hollow composite parts with convex and / or concave components are a common typical structure in aerospace structures. This type of parts usually has high requirements on the quality of the internal mold. It is necessary not only to ensure the molding quality of the parts, but more importantly to ensure that the open hollow composite parts with convex or concave components can be smoothly demolded after molding. Therefore, there are high requirements for molding tooling. Usually, the molding molds are made of soft molds, gypsum molds or soluble core molds, but the molding quality of the parts is difficult to meet high quality requirements. Utility Model Content

[0004] In order to solve the deficiencies in the prior art, the utility model provides an open hollow composite part forming tool, which has the characteristics of high part forming quality and easy demoulding after forming.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a forming tool for 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.

[0006] Furthermore, a connection surface between the mold body 1 and the mold body 2 is parallel to the axis of the open hollow composite part.

[0007] Furthermore, a connection surface between the first mold body and the second mold body forms a set angle with the axis of the open hollow composite component, and the vertex of the angle is away from the open end of the open hollow composite component.

[0008] Furthermore, the material of the mold body 1 and the mold body 2 is metal.

[0009] Furthermore, it also includes a base, and the mold body 1 and the mold body 2 are installed on the base after being molded together.

[0010] Furthermore, the base is provided with cylindrical pins for positioning the mold body 1 and the mold body 2.

[0011] Furthermore, a universal lifting ring is also provided on the base.

[0012] Compared with the prior art, the utility model achieves the following beneficial effects: the utility model sets a mold body 1 and a mold body 2, wherein the mold body 1 has a profile that matches the inner surface of the open hollow composite part, and the axis of the open hollow composite part passes through the mold body 1; the mold body 2 has a profile that matches 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 demolding after molding. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the open hollow composite material component in the utility model;

[0014] Figure 2 is used for Figure 1 Schematic diagram of the molding die structure of a hollow composite part with a central opening;

[0015] Figure 3 is used for Figure 1 Schematic diagram of the molding tooling structure of a hollow composite part with a central opening;

[0016] Figure 4 is to use Figure 3 The schematic diagram of the forming tooling after manufacturing an open hollow composite part;

[0017] In the figure: 1. Mold body 1; 2. Mold body 2; 3. Base; 4. Cylindrical pin; 5. Screw; 6. Universal lifting ring. DETAILED DESCRIPTION

[0018] The utility model is further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and cannot be used to limit the protection scope of the utility model.

[0019] Embodiment 1:

[0020] A tooling for forming an open hollow composite part mainly comprises: a mold body 1 and a mold body 2. The mold body 1 has a profile that matches the inner surface of the open hollow composite part, and the axis of the open hollow composite part passes through the mold body 1; the mold body 2 has a profile that matches 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.

[0021] The open hollow composite part forming tool of the utility model is suitable for forming and manufacturing open hollow composite parts with inner concave components, inner convex components, or both inner concave and inner convex components. This embodiment is specifically described with an open hollow composite part with an inner convex component.

[0022] like Figure 1 to Figure 4 As shown, the forming tooling of the open hollow composite part with an inner convex component includes a mold body 1, a mold body 2, a base 3, a cylindrical pin 4, a screw 5, a universal lifting ring 6 and other finished parts and standard parts.

[0023] Mold closing: The molding tooling of the open hollow composite part with an inner convex component is a combined mold made of metal, wherein the mold body is divided into a mold body 1 and a mold body 2 of different sizes, the mold body 1 has a profile that matches the inner surface of the open hollow composite part, the profile is a smooth shape, and the axis of the open hollow composite part passes through the mold body 1; the mold body 2 has a profile that matches the inner surface of the open hollow composite part, and the profile of the mold body 2 covers the inner convex component inside the open hollow composite part, that is, the profile has a depression, which matches the inner convex component inside the open hollow composite part, and the internal fitting surfaces of the mold body 1 and the mold body 2 are provided with a hook-shaped plug-in locking mechanism, and the mold body 1 and the mold body 2 are fixedly mounted on the base 3 by cylindrical pins 4 and screws 5.

[0024] Laying, bagging and curing: the mold body 1, the mold body 2 2 and the base 3 are combined into a forming tool through an internal locking mechanism, a cylindrical pin 4 and a screw 5. The fiber prepreg is laid on the mold surface formed by the mold body 1 and the mold body 2 2 according to the component structure design. After the laying is completed, vacuum bagging is performed on the base 3. The component is heated, pressurized and cured in an autoclave under the requirements of the curing system.

[0025] Demolding: The size of mold body 1 is larger than that of mold body 2. When demolding, it is first ejected axially. The surface of mold body 2 is partially concave and fits with the convex surface of the workpiece. When mold body 1 is demolded, a large part of the cavity space is formed inside the composite workpiece. At this time, mold body 2 with the concave surface is first moved radially toward the axis relative to the workpiece. When the concave on mold body 2 is completely separated from the convex component on the workpiece, mold body 2 is moved axially to eject it.

[0026] The molding tooling described in the utility model meets the requirements of male mold molding of open hollow composite parts with inner convex components; the connection surface of mold body 1 and mold body 2 2 is parallel to the axis of the open hollow composite part. The utility model solves the problem that the inner convex hollow composite part cannot be demolded after solidification molding through a split mold combination male mold structure. The problem that similar configuration inner convex hollow composite parts cannot be demolded can be solved through a reasonable split mold combination structure. It has a general use demand in the production process of open hollow composite parts with inner convexities.

[0027] The mold body 1 and the mold body 2 in the molding tool of the utility model are made of metal, which can avoid the problems of low molding precision and large errors caused by using soft molds such as soft molds, plaster molds or soluble core molds. In addition to using metal materials, other hard materials can also be used as molding molds.

[0028] The molding tooling of the utility model has no airtight requirements for the mold body when making a vacuum bag on the base. As long as the airtight requirements of the base are met, the structure of the combined mold and the risk of air leakage are simplified. The utility model can reasonably select the parting surface and appropriately increase or decrease the size and number of the mold body to meet the molding requirements of hollow composite parts with inner convex openings of different structures.

[0029] The molding tooling of the utility model has a simple structure and few assembly parts. A cylindrical pin 4 is provided on the base for positioning the first mold body and the second mold body. The disassembly and assembly are convenient and the operation is simple. The universal lifting ring 6 is provided to facilitate the handling and movement of the tooling. The operation level of the operator is low, and the simple operation greatly reduces the labor intensity of the operator. The tooling uses machined parts and standard parts with simple configurations, etc. The overall structure is simple and compact, the debugging and maintenance are convenient, the manufacturing cost is low, and the operation is reliable. It has a general use demand in the production process of hollow composite parts with inner convex openings.

[0030] Embodiment 2:

[0031] The only difference between this embodiment and the first embodiment is that, in this embodiment, the connection surface of the mold body 1 and the mold body 2 forms a set angle with the axis of the open hollow composite part, and the vertex of the angle is far away from the opening end of the open hollow composite part, that is, the mold body 1 and the mold body 2 2 are quickly demolded through the wedge structure, which is more conducive to the rapid axial release of the mold body 1.

[0032] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A tool for forming an open hollow composite part, characterized in that: include: A mold body (1), wherein the mold body (1) has a profile that matches the inner surface of the open hollow composite part, and the axis of the open hollow composite part passes through the mold body (1); The mold body 2 (2) has a profile that matches the inner surface of the open hollow composite part, and the profile of the mold body 2 (2) covers the inner concave and / or inner convex components inside the open hollow composite part.

2. The open hollow composite part forming tool according to claim 1, characterized in that: The connection surface between the mold body 1 (1) and the mold body 2 (2) is parallel to the axis of the open hollow composite material part.

3. The open hollow composite part forming tool according to claim 1, characterized in that: The connecting surface of the mold body 1 (1) and the mold body 2 (2) forms a set angle with the axis of the open hollow composite material part, and the vertex of the angle is far away from the open end of the open hollow composite material part.

4. The open hollow composite part forming tool according to claim 1, characterized in that: The material of the mold body 1 (1) and the mold body 2 (2) is metal.

5. The open hollow composite part forming tool according to claim 1, characterized in that: It also comprises a base (3), on which the mold body 1 (1) and the mold body 2 (2) are mounted after being molded together.

6. The open hollow composite part forming tool according to claim 5, characterized in that: The base (3) is provided with a cylindrical pin (4) for positioning the mold body 1 (1) and the mold body 2 (2).

7. The open hollow composite part forming tool according to claim 5, characterized in that: The base (3) is also provided with a universal lifting ring (6).

Images