TWM519050U - Buffer vanishing mold set and core structure thereof - Google Patents

Description

Buffering dissipative mold set and its core mold structure

A vanishing mold for a composite material, in particular, a vanishing mold set having a cushioning protection function and a core mold structure thereof.

Generally, non-standard shaped pipe fittings, especially non-standard shaped pipe fittings of composite materials, are manufactured by using a mold set including a metal outer mold and a vanishing core mold because the shape is particularly difficult to process, and such a process is particularly frequent. For industries that are sensitive to the weight of composite products, such as aircraft, aerospace or high-end carbon fiber bicycles, the increase or decrease of each gram of finished products is the key to affecting fuel consumption, energy loss or the difference between the time and the completion of the schedule.

In order to achieve better precision of the finished product of the composite material, it is always better to carry out the composite material processing with the inner and outer molds with high rigidity. However, the existing lost core mold as the inner mold is not too weak and the finished product is finished. Insufficient precision; the high-rigidity lost foam material is selected to make the core mold, but when the composite material is hot-pressed, the high-rigidity core mold and the high-rigidity outer mold are pressed against each other, causing the intermediate composite material to be pressed. The yarn breakage or running of the yarn makes the appearance of the finished product not look good or causes doubts about the mechanical properties of the finished product.

In order to improve the precision of the finished composite material and solve the existing high-rigidity disappearing mold, the fiber of the finished composite material is easily broken or run, which causes the appearance to be unsightly or the mechanical properties to be doubtful. The vanishing mold set can be used to process finished products of high precision, high rigidity and flawless appearance.

In order to achieve the above object, the present invention proposes a buffer-dissipative mold set comprising:

An outer mold is a metal mold and forms a press-fit cavity inside;

a core mold, which is a vanishing mold and disposed in the pressing cavity;

a cushioning protective layer having elasticity and covering the surface of the mandrel;

A fiber composite material is disposed between the buffer protective layer on the surface of the mandrel and the inner wall surface of the press-fit cavity.

Preferably, the buffer protective layer of the present invention is an elastic layer of a polymer material having a thickness of between 0.05 mm and 0.5 mm.

Preferably, the thickness of the buffer protection layer of the present invention is 0.2 mm.

Preferably, the buffer protective layer of the present invention is a coating layer or a film layer such as a silicone coating layer, a PVA film layer or a PE film layer.

When the novel is used, the fiber composite material is sandwiched between the core mold and the outer mold, and the fiber composite material is hot-pressed. When the fiber composite material is manufactured into a fiber composite material, the outer mold is opened to take out the finished product, and then After the disappearing mold inside the finished product is hydrolyzed into a liquid state, the finished fiber composite material can be obtained.

Since the present invention is coated with a buffer protective layer on the surface of the core mold, the following effects are mainly achieved by the elasticity of the buffer layer and the structure of the cladding layer:

1. The buffer protective layer of the present invention can be protected from the core mold of the disappearing mold, thereby preventing the core mold from being hydrolyzed as the inner mold.

2. The present invention has a buffer protective layer on the surface of the core mold, which can buffer the pressure when the inner and outer molds are clamped. Therefore, the high-rigidity disappearing mold is selected as the core mold, and the fiber composite material is processed with high precision. Moreover, it can buffer the molding pressure during the molding of the fiber composite material, and avoid the problem of yarn breakage or running yarn when the fiber composite material is formed, so that the appearance of the finished fiber composite material does not cause defects.

In order to understand the technical features and practical effects of the present invention in detail, it can be implemented in accordance with the contents of the specification, and further described in detail with reference to the preferred embodiments shown in the drawings.

Referring to FIG. 1 and FIG. 2, the present invention provides a buffer-dissipative mold set including an outer mold 40, a core mold 10 disposed in the outer mold 40, and a buffer protective layer 20 covering the surface of the core mold 10. And a fiber composite material 30 disposed between the core mold 10 and the outer mold 40, wherein:

The outer mold 40 is a metal mold made of a metal such as steel or aluminum, and a press-molding mold 41 conforming to the outer shape of the fiber composite material 30 is formed inside the outer mold 40.

The core mold 10 is a vanishing mold. For example, in the preferred embodiment, the core mold 10 is a vanishing mold formed of a soluble polymer material, and the outer shape of the core mold 10 conforms to the shape of the inner space of the finished fiber composite material 30. And the mandrel 10 is disposed in the nip cavity 41 of the outer mold 40.

The buffer protection layer 20 is an elastic layer of a polymer material and is coated on the surface of the core mold 10. The buffer protection layer 20 has an effect of elasticity, gas barrier, and lightness, and has a thickness of between 0.05 mm and 0.5 mm. The buffer protective layer 20 may be a silicone coating layer, a PVA film layer or a PE film layer formed by spraying or infiltration curing. As in the preferred embodiment, the buffer protective layer 20 is a silicone coating layer having a thickness of 0.2 mm.

The fiber composite material 30 is a tubular thermosetting and thermoplastic composite material, and the fiber composite material 30 is coated on the surface of the buffer protective layer 20, thereby being disposed on the buffer protective layer 20 and the inner wall surface of the pressing mold cavity 41. The fiber composite material 30 is pressed against the cushioning protective layer 20 by the rigid inner wall surface of the pressure-receiving mold cavity 41 during processing.

When the present invention is used, as shown in FIG. 2 and FIG. 3, the outer mold 40 is closed and clamped to the inside and outside of the core mold 10, thereby manufacturing the fiber composite material 30 by hot press forming, and buffer protection during the process. The layer 20 acts as an elastic buffer so that the fiber composite material 30 does not have the inner and outer surfaces pinched by the rigid object, so that the present invention can be molded into the core mold 10 even if a highly rigid soluble polymer material is used. The problem of yarn breakage or running of the fibers of the processed fiber composite material 30 is not caused, so that the finished product has no defects. After the fiber composite material 30 is molded, the outer mold 40 is opened to take out the finished fiber composite material 30, and then the core mold 10 is hydrolyzed and discharged out of the finished product of the fiber composite material 30, and the finished product can be obtained.

The foregoing preferred embodiment is only one embodiment of the present invention, and the description of its configuration and spatial form is not intended to limit the scope of the present invention. Any simple changes in shape, material selection or addition configuration in accordance with the preferred embodiment of the present invention are still within the scope of the present invention.

10‧‧‧ mandrel
20‧‧‧buffer protection layer
30‧‧‧Fiber composite
40‧‧‧External mold
41‧‧‧ Pressing cavity

1 is a perspective view of a preferred embodiment of the present invention. Figure 2 is an enlarged perspective view of a preferred embodiment of the present invention. Figure 3 is a perspective view of the preferred embodiment of the present invention.

10‧‧‧ mandrel

20‧‧‧buffer protection layer

30‧‧‧Fiber composite

40‧‧‧External mold

41‧‧‧ Pressing cavity

Claims (8)

A buffer-dissipative mold set comprising: an outer mold which is a metal mold and forms a press-molding cavity inside; a core mold which is a vanishing mold and is disposed in the press-molding cavity; a buffer protective layer having Elastically coated on the surface of the mandrel; and a fiber composite material disposed between the buffer protective layer on the surface of the mandrel and the inner wall surface of the press-fit cavity. The buffer-disappearing mold set according to claim 1, wherein the buffer protective layer is an elastic layer of a polymer material, and has a thickness of between 0.05 mm and 0.5 mm. The buffer-disappearing mold set according to claim 2, wherein the buffer protective layer has a thickness of 0.2 mm. The buffer-disappearing mold set according to claim 2, wherein the buffer protective layer is a silicone coating layer, a PVA film layer or a PE film layer. A core mold structure for a buffering mold set comprising: a core mold which is a vanishing mold; and a buffer protective layer which is elastic and coated on a surface of the core mold. The core mold structure of the buffer-disappearing mold set according to claim 5, wherein the buffer protective layer is an elastic layer of a polymer material, and has a thickness of between 0.05 mm and 0.5 mm. The core mold configuration of the buffer-disappearing mold set according to claim 6, wherein the buffer protective layer has a thickness of 0.2 mm. The core mold structure of the buffer-disappearing mold set according to claim 6, wherein the buffer protective layer is a silicone coating layer, a PVA film layer or a PE film layer.