A carbon fiber stator sheath preform mold and an autoclave molding mold

Abstract

This utility model discloses a pre-forming mold for a carbon fiber stator sheath, comprising a pre-forming mold body, which is a male mold with an outer surface as a forming surface. A silicone fixture is attached to the surface of the pre-forming mold body; a stator sheath is attached to the surface of the silicone fixture, and the stator sheath and the silicone fixture together form a pre-formed body. The stator sheath and the silicone fixture are first pre-formed on the pre-forming mold, which serves as the male mold. Then, the pre-formed body is placed in a forming mold, and finally placed in an autoclave for pressurization and curing. During the forming process, the outer surface of the stator sheath adheres to the inner wall of the mold cylinder, and the inner surface adheres to the outer wall of the silicone fixture, thereby ensuring the internal and external dimensions of the stator sheath. This allows the formed stator sheath to directly meet the dimensional requirements, eliminating the need for subsequent machining and reducing processing costs.

Description

Technical Field

[0001] This utility model relates to the field of carbon fiber stator sheath molding technology, and in particular to a carbon fiber stator sheath pre-molding mold and a hot autoclave molding mold. Background Technology

[0002] With the booming development of the low-altitude economy, lightweighting is receiving increasing attention and favor from the industry due to limitations in battery structure and performance. Carbon fiber composite materials, with their lightweight and high strength characteristics, are being used more and more in the low-altitude economy.

[0003] As a crucial structural component of aircraft, the research and application of fiber composite materials in stator sleeves are becoming increasingly widespread. Due to the extremely stringent dimensional requirements for stator sleeves, current manufacturing methods for carbon fiber stator sleeves generally combine mold forming with machining to ensure dimensional accuracy, resulting in high processing costs with existing technologies. Utility Model Content

[0004] The purpose of this invention is to provide a pre-forming mold for carbon fiber stator sheaths and a hot autoclave forming mold, which directly forms high-precision carbon fiber stator sheaths through two sets of molds, eliminating machining and thus reducing processing costs.

[0005] To solve the above-mentioned technical problems, this utility model provides a carbon fiber stator sheath pre-forming mold, including a pre-forming mold body, which is a male mold with an outer surface as a forming surface. A silicone fixture is laid on the surface of the pre-forming mold body; a stator sheath is laid on the surface of the silicone fixture, and the stator sheath and the silicone fixture form a pre-forming body.

[0006] Preferably, the stator sheath comprises a glass fiber insulation layer and a carbon fiber skin layer.

[0007] Preferably, a glass fiber insulation layer and a carbon fiber skin layer are sequentially laid on the silicone fixture.

[0008] This utility model also provides a carbon fiber stator sheath autoclave forming mold, including a mold base and a mold cylinder, wherein the mold cylinder is detachably installed on the mold base;

[0009] The mold cylinder is a female mold, and its inner surface is the forming surface. The preform is formed by hot pressing inside the mold cylinder.

[0010] Preferably, the mold base has a positioning groove, and the mold cylinder is fitted into the positioning groove of the mold base.

[0011] Preferably, the mold cylinder is further provided with a plurality of fixing bolts, which pass through the mold cylinder and are threadedly connected to the mold base to fix the mold cylinder on the mold base.

[0012] Preferably, the stator sleeve in the preform is attached to the inner surface of the mold cylinder, and the silicone fixture supports the stator sleeve to be attached to the inner surface of the mold cylinder.

[0013] Preferably, the mold for placing the stator sheath is placed in an autoclave and heated under pressure to solidify and form the mold.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This invention designs two sets of molds: a pre-forming mold and a molding mold. The stator sleeve and silicone fixture are first pre-formed on the pre-forming mold (which serves as the male mold). Then, the pre-formed body is placed in the molding mold, and finally, it is placed in an autoclave for pressurization and curing. During the molding process, the outer surface of the stator sleeve adheres to the inner wall of the mold cylinder, and the inner surface adheres to the outer wall of the silicone fixture, thus ensuring the inner and outer dimensions of the stator sleeve. This allows the molded stator sleeve to directly meet the dimensional requirements, eliminating the need for subsequent machining and reducing processing costs. Attached Figure Description

[0016] Figure 1 This is a top view of a carbon fiber stator sheath preform mold provided by this utility model;

[0017] Figure 2 yes Figure 1 A cross-sectional view along the AA direction;

[0018] Figure 3 yes Figure 2 Enlarged view of point B in the middle;

[0019] Figure 4 This is a schematic diagram of the structure of a carbon fiber stator sheath autoclave molding die provided by this utility model;

[0020] Figure 5 This is a top view of a carbon fiber stator sheath autoclave molding die provided by this utility model;

[0021] Figure 6 yes Figure 5 A cross-sectional view along the CC direction;

[0022] Figure 7 yes Figure 5 A cross-sectional view along the DD direction;

[0023] Figure 8 yes Figure 7 Enlarged view of point E in the middle.

[0024] In the diagram: 10, preform mold body; 1, silicone jig; 100, stator sleeve; 20, mold base; 30, mold cylinder; 40, positioning groove; 50, fixing bolt. Detailed Implementation

[0025] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become clearer from the following description and claims. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the present invention.

[0026] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Example

[0028] This utility model provides a pre-forming mold for carbon fiber stator sheaths. Please refer to [link / reference]. Figure 1-3 The preform includes a preform mold body 10, which is a male mold with an outer surface that is a forming surface. A silicone fixture 1 is attached to the surface of the preform mold body 10. A stator sleeve 100 is attached to the surface of the silicone fixture 1. The stator sleeve 100 and the silicone fixture 1 together form a preform.

[0029] Specifically, the stator sheath 100 includes a glass fiber insulation layer and a carbon fiber skin layer; the glass fiber insulation layer and the carbon fiber skin layer are sequentially laid on the silicone fixture 1.

[0030] This utility model also provides a carbon fiber stator sheath autoclave molding die; please refer to [link / reference]. Figure 4-8 It includes a mold base 20 and a mold cylinder 30, wherein the mold cylinder 30 is detachably mounted on the mold base 20; the mold cylinder 30 is a female mold with an inner surface as a forming surface, and the preform is hot-pressed and formed inside the mold cylinder 30.

[0031] Specifically, the mold base 20 is provided with a positioning groove 40, and the mold cylinder 30 is fitted into the positioning groove 40 of the mold base 20.

[0032] Furthermore, the mold cylinder 30 is provided with a plurality of fixing bolts 50, which pass through the mold cylinder 30 and are threadedly connected to the mold base 20, thereby fixing the mold cylinder 30 onto the mold base 20.

[0033] In this embodiment, the stator sleeve 100 in the preform is attached to the inner surface of the mold cylinder 30, and the silicone fixture 1 supports the stator sleeve 100 to be attached to the inner surface of the mold cylinder 30.

[0034] The molding method for carbon fiber stator sheaths includes the following steps:

[0035] Step A: Place the silicone fixture 1 on the pre-molded mold body 10, connect the vacuum, and make the silicone fixture 1 fit tightly against the pre-molded mold body 10;

[0036] Step B: Lay a fiberglass insulation layer on the pre-molded body 10;

[0037] Step C: Next, lay the carbon fiber skin layer;

[0038] Step D: Disconnect the vacuum and remove the preform from the preform mold body 10;

[0039] Step E: Install the mold cylinder 30 onto the mold base 20 using bolts to form the molding mold assembly;

[0040] Step F: Next, place the preform into the molding die assembly and compact it;

[0041] Step G: Then place the silicone jig 1 into the molding die assembly;

[0042] Step H: Laying out the breathable felt and preparing the vacuum bag in the molding die assembly and silicone fixture 1;

[0043] Step I: Then place it in an autoclave and pressurize it to 0.6 MPa, maintaining the internal pressure;

[0044] Step J: Heat the autoclave to 138℃ and cure for 6 hours;

[0045] Step K: After the curing process is complete, remove the mold and use a cold air blower to quickly cool it down. Once the mold temperature drops below 60°C;

[0046] Step L: Remove the fixing bolts between the mold base 20 and the mold cylinder 30, and remove the molding mold assembly;

[0047] Step M: Then remove the product from the mold cylinder 30 to complete the product demolding.

[0048] The above description is only a description of the preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.

Claims

1. A pre-forming mold for a carbon fiber stator sheath, characterized in that, Includes a pre-molded mold body (10), which is a male mold with an outer surface as a molding surface, and a silicone fixture (1) is laid on the surface of the pre-molded mold body (10). A stator sheath (100) is laid on the surface of the silicone fixture (1), and the stator sheath (100) and the silicone fixture (1) form a preform.

2. The carbon fiber stator sheath preform mold as described in claim 1, characterized in that, The stator sheath (100) includes a glass fiber insulation layer and a carbon fiber skin layer.

3. The carbon fiber stator sheath pre-forming mold as described in claim 2, characterized in that, A glass fiber insulation layer and a carbon fiber skin layer are sequentially laid on the silicone fixture (1).

4. A carbon fiber stator sheath autoclave molding die, characterized in that, It includes a mold base (20) and a mold cylinder (30), wherein the mold cylinder (30) is detachably mounted on the mold base (20); The mold cylinder (30) is a female mold, and its inner surface is a forming surface. The preform is hot-pressed and formed inside the mold cylinder (30).

5. The carbon fiber stator sheath autoclave forming mold as described in claim 4, characterized in that, The mold base (20) is provided with a positioning groove (40), and the mold cylinder (30) is fitted into the positioning groove (40) of the mold base (20).

6. The carbon fiber stator sheath autoclave forming mold as described in claim 5, characterized in that, The mold cylinder (30) is also provided with a plurality of fixing bolts (50), which are threaded through the mold cylinder (30) and connected to the mold base (20) to fix the mold cylinder (30) on the mold base (20).

7. The carbon fiber stator sheath autoclave forming mold as described in claim 4, characterized in that, The stator sleeve (100) in the preform is attached to the inner surface of the mold cylinder (30), and the silicone fixture (1) supports the stator sleeve (100) to be attached to the inner surface of the mold cylinder (30).

8. The carbon fiber stator sheath autoclave forming mold as described in claim 4, characterized in that, The mold for placing the stator sheath (100) is placed in an autoclave and heated under pressure to solidify and form the mold.

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