Combined mold for bottom plate of carbon fiber equipment compartment of high-speed train

Abstract

The utility model discloses a combined mold for a high-speed train carbon fiber equipment compartment bottom plate. The combined mold comprises an outer mold and a split inner mold, the split inner mold comprises an inner mold long edge arranged along the inner side of the long edge of the outer mold and an inner mold short edge arranged along the inner side of the short edge of the outer mold; the split type inner mold further comprises an inner mold bottom face located at the bottom of the split type inner mold. The carbon fiber equipment cabin bottom plate is arranged in the split type inner mold; and the matching surface of the outer mold and the split type inner mold is an inclined surface. According to the combined die, the carbon fiber equipment compartment bottom plate achieves good size and surface state after being cured, and the equipment compartment bottom plate is prevented from being extruded to crack after a metal die is cured, cooled and shrunk. According to the mold, simple demolding is achieved, the thin and brittle equipment compartment bottom plate is prevented from being damaged during demolding, generalization of the main body structure of the mold is achieved, maintenance is convenient, and the problems that a traditional mold is slow in heating and uneven in heating are solved.

Description

Technical Field

[0001] This utility model relates to the field of production and processing technology of carbon fiber equipment cabin floor plates for high-speed trains, and in particular to a combined mold for carbon fiber equipment cabin floor plates for high-speed trains. Background Technology

[0002] Carbon fiber equipment compartment floor panels for high-speed trains possess advantages such as light weight and high strength. To achieve the required dimensions and surface finish, molds are necessary. However, manufacturing with traditional molds presents the following difficulties:

[0003] Metal molds have a high coefficient of thermal expansion and contraction. Upon cooling and contraction, they can easily cause cracks to be extruded from the cured equipment compartment floor. During curing, the metal mold and carbon fiber are in contact at approximately 130°C, and then both cool to room temperature. The temperature change during this period exceeds 100°C, but the difference in their coefficients of thermal expansion is significant. A metal mold (such as a 2-meter-long aluminum alloy mold) can deform up to 4.5mm under temperature changes, while the cured carbon fiber equipment compartment floor exhibits near-zero deformation under the same temperature difference. Therefore, it is easy for cracks to be extruded from the cured equipment compartment floor. For a detailed explanation of this principle, please refer to [link to relevant documentation]. Figure 1 As shown.

[0004] During demolding, the carbon fiber equipment compartment floor plate is relatively large (approximately 2000mm in length and width) but relatively thin (approximately 30mm in thickness). This can easily cause uneven stress on the thin and brittle floor plate, resulting in micro-cracks. The mold surface is also prone to adhesive buildup. Long-term use of tools to clean this adhesive can damage the mold surface, eventually rendering the mold unusable and leading to higher mold costs for mass production.

[0005] Secondly, slow heating of the mold and uneven curing temperature can lead to stress concentration inside the carbon fiber equipment cabin bottom plate and microcracks in the matrix, thus reducing the fatigue strength of the product.

[0006] Therefore, based on the above-mentioned technical problems, those skilled in the art urgently need to develop a composite mold for the carbon fiber equipment cabin floor of high-speed trains. Utility Model Content

[0007] The purpose of this invention is to provide a modular mold for the carbon fiber equipment compartment floor plate of high-speed trains. This modular mold ensures that the carbon fiber equipment compartment floor plate achieves good dimensional and surface conditions after curing, preventing the equipment compartment floor plate from being extruded and cracked after the metal mold cools and shrinks during curing. The mold allows for easy demolding, avoiding damage to the thin and brittle equipment compartment floor plate during demolding. It also enables the main structure of the mold to be universal, making maintenance convenient and solving the problems of slow and uneven heating in traditional molds.

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] This utility model discloses a combined mold for the bottom plate of a high-speed train carbon fiber equipment compartment. The combined mold includes:

[0010] External mold and split-type internal mold;

[0011] The split-type inner mold includes an inner mold long side arranged along the inner side of the long side of the outer mold and an inner mold short side arranged along the inner side of the short side of the outer mold.

[0012] The split-type inner mold also includes an inner mold bottom surface located at its bottom;

[0013] The carbon fiber equipment compartment floor plate is placed inside the split-type inner mold.

[0014] The mating surfaces of the outer mold and the split inner mold are inclined surfaces.

[0015] Furthermore, the outer mold is configured as a cuboid structure with a length of 2000mm, a width of 1000mm, and a height of 30mm, and the upper end of the outer mold is open;

[0016] The outer mold has a thickness of 2mm and is made of 5083 aluminum alloy.

[0017] The outer mold has multiple thin ribs arranged at intervals along its length.

[0018] Furthermore, 11 thin ribs are arranged at intervals inside the outer mold;

[0019] The length of the thin rib plate is the same as the length of the outer mold.

[0020] The thin rib plate has a height of 30mm and a thickness of 1.5mm. The thin rib plate is welded and fixed to the bottom surface of the outer mold and is perpendicular to the bottom surface of the outer mold.

[0021] The thin rib plate is provided with multiple circular holes spaced apart.

[0022] Furthermore, both the long and short sides of the outer mold are provided with 45° bevels.

[0023] Furthermore, the long side of the inner mold has a 45° inclined surface that matches the 45° inclined surface of the long side of the outer mold;

[0024] The long side of the inner mold that contacts the bottom plate of the carbon fiber equipment compartment has a conformal groove that matches the bottom plate of the carbon fiber equipment compartment.

[0025] The inner mold has hexagonal holes at both ends along its long side.

[0026] Furthermore, the short side of the inner mold has a 45° inclined surface that mates with the 45° inclined surface of the short side of the outer mold;

[0027] The inner mold has hexagonal holes at both ends along its short side.

[0028] Furthermore, the bottom surface of the inner mold mates with the inner side of the bottom surface of the outer mold, and all four sides of the bottom surface of the inner mold have a 45° inclined surface that mates with the 45° inclined surface of the outer mold.

[0029] Furthermore, the material of the split inner mold is 45# mold steel.

[0030] The above technical solution provides a combined mold for the bottom plate of a high-speed train carbon fiber equipment compartment, which has the following beneficial effects:

[0031] This utility model's combined mold achieves excellent dimensional and surface conditions for the carbon fiber equipment compartment floor plate after curing, preventing the equipment compartment floor plate from being extruded and cracked after the metal mold cools and shrinks during curing. The mold enables easy demolding, avoiding damage to the thin and brittle equipment compartment floor plate during demolding. It also achieves a universal mold structure, facilitating maintenance and solving the problems of slow and uneven heating associated with traditional molds. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0033] Figure 1 A schematic diagram illustrating the demolding principle of traditional molds using existing technology;

[0034] Figure 2 This is a demolding principle diagram of a composite mold for the bottom plate of a high-speed train carbon fiber equipment compartment, as disclosed in an embodiment of this utility model.

[0035] Figure 3 This is a structural schematic diagram of a composite mold for the bottom plate of a high-speed train carbon fiber equipment compartment, as disclosed in an embodiment of this utility model.

[0036] Figure 4 This is a schematic diagram of the outer mold of a composite mold for the bottom plate of a high-speed train carbon fiber equipment compartment, as disclosed in an embodiment of this utility model.

[0037] Figure 5 This is a schematic diagram and a partial enlarged view of the long side of the inner mold of a composite mold for the bottom plate of a high-speed train carbon fiber equipment compartment, as disclosed in an embodiment of this utility model.

[0038] Figure 6 This is a schematic diagram and a partial enlarged view of the short side of the inner mold of a composite mold for the bottom plate of a carbon fiber equipment compartment of a high-speed train, as disclosed in an embodiment of this utility model.

[0039] Explanation of reference numerals in the attached figures:

[0040] 1. Outer mold; 2. Split-type inner mold; 3. Carbon fiber equipment compartment floor plate;

[0041] 101. Thin-ribbed plate; 102. Round hole;

[0042] 201. Long side of the inner mold; 202. Short side of the inner mold; 203. Bottom surface of the inner mold; 204. 45° bevel on the long side; 205. Conformal groove; 206. 45° bevel on the short side; 207. Hexagonal hole. Detailed Implementation

[0043] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0044] See Figures 2 to 6 As shown;

[0045] This embodiment provides a composite mold for the carbon fiber equipment compartment floor plate of a high-speed train, the composite mold comprising:

[0046] Outer mold 1 and split inner mold 2;

[0047] The split inner mold 2 includes an inner mold long side 201 arranged along the inner side of the long side of the outer mold 1 and an inner mold short side 202 arranged along the inner side of the short side of the outer mold 1.

[0048] The split inner mold 2 also includes an inner mold bottom surface 203 located at its bottom;

[0049] The carbon fiber equipment compartment bottom plate 3 is placed inside the split inner mold 2;

[0050] The mating surfaces of the outer mold 1 and the split inner mold 2 are inclined surfaces.

[0051] Specifically, this embodiment discloses a combined mold, which includes an outer mold 1 and an inner mold, wherein the inner mold is a split inner mold 2; the split inner mold 2 of this embodiment includes an inner mold long side 201, an inner mold short side 202 and an inner mold bottom surface 203, which correspond to the long side, short side and bottom surface of the outer mold 1, respectively; at the same time, in order to facilitate demolding, the mating surface of the outer mold 1 and the inner mold is an inclined surface, which facilitates the removal of the inner mold.

[0052] Preferably, in this embodiment, the outer mold 1 is configured as a cuboid structure with a length of 2000mm, a width of 1000mm, and a height of 30mm, and the upper end of the outer mold 1 is open;

[0053] The outer mold 1 has a thickness of 2mm and is made of 5083 aluminum alloy.

[0054] The outer mold 1 has multiple thin ribs 101 that extend along the length of the outer mold at intervals inside.

[0055] More preferably, in this embodiment, the outer mold 1 has 11 thin ribs 101 arranged at intervals inside;

[0056] Among them, the length of the thin rib plate 101 is the same as the length of the outer mold 1;

[0057] The thin rib plate 101 has a height of 30mm and a thickness of 1.5mm. The thin rib plate 101 is welded and fixed to the bottom surface of the outer mold and is perpendicular to the bottom surface of the outer mold. The thin rib plate 101 is provided with multiple round holes 102 spaced apart.

[0058] First, this embodiment further defines the structure of the outer mold 1, which has 11 thin ribs 101 spaced apart inside and circular holes 102. The thin ribs 101 in this embodiment increase the rigidity of the outer mold 1 and reduce the amount of mold deformation. Based on the principle of fins, they can significantly increase the contact area between the mold and hot air. The circular holes 102 facilitate the circulation of hot air around the mold. Therefore, the design of the thin ribs 101 in this embodiment can significantly increase the absorption of heat in the oven or autoclave, so as to facilitate the mold to be heated quickly and evenly.

[0059] Preferably, in this embodiment, the inner long side and short side of the outer mold 1 are both provided with 45° inclined surfaces.

[0060] Based on the structure of the outer mold 1 described above, the inner mold 201 of this embodiment has a long side 45° inclined surface 204 that matches the 45° inclined surface of the long side of the outer mold 1.

[0061] The long side 201 of the inner mold that contacts the carbon fiber equipment compartment bottom plate 3 has a conformal groove 205 that matches the carbon fiber equipment compartment bottom plate 3;

[0062] Hexagonal holes 207 are provided at both ends of the long side 201 of the inner mold along its length.

[0063] Secondly, in this embodiment, the short side 202 of the inner mold has a short side 45° inclined surface 206 that matches the 45° inclined surface of the short side of the outer mold 1;

[0064] Hexagonal holes 207 are provided at both ends of the short side 202 of the inner mold along its length.

[0065] In addition, in this embodiment, the bottom surface 203 of the inner mold is fitted with the inner side of the bottom surface of the outer mold, and all four sides of the bottom surface 203 of the inner mold have a bottom surface 45° inclined surface that fits with the 45° inclined surface of the outer mold.

[0066] Preferably, the split inner mold 2 in this embodiment is made of 45# mold steel. The inner mold in this embodiment is made of 45# mold steel, which has better strength and rigidity than aluminum alloy. After curing and cooling, it can withstand the extrusion force of the outer mold, thus lifting the carbon fiber equipment compartment bottom plate 3 and protecting the bottom plate from being extruded and cracked.

[0067] During demolding, since the carbon fiber equipment cabin bottom plate 3 is large in length and width but small in thickness, in order to ensure that the bottom plate is not damaged during demolding, a chain can be used to hook onto the hexagonal holes 207 of the long side 201 and the short side 202 of the inner mold at the same time to achieve overall demolding and ensure that the four sides are evenly stressed.

[0068] Traditional molds are prone to adhesive residue buildup, and repeated cleaning with tools can damage the mold surface. Combination molds, on the other hand, only require replacement of the damaged inner mold, while the outer mold (1) is less prone to damage and can be used for a longer period, reducing production costs.

[0069] The above technical solution provides a combined mold for the bottom plate of a high-speed train carbon fiber equipment compartment, which has the following beneficial effects:

[0070] This utility model's combined mold achieves excellent dimensional and surface conditions for the carbon fiber equipment compartment floor plate after curing, preventing the equipment compartment floor plate from being extruded and cracked after the metal mold cools and shrinks during curing. The mold enables easy demolding, avoiding damage to the thin and brittle equipment compartment floor plate during demolding. It also achieves a universal mold structure, facilitating maintenance and solving the problems of slow and uneven heating associated with traditional molds.

[0071] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A composite mold for the carbon fiber equipment compartment floor plate of a high-speed train, characterized in that, The combined mold includes: Outer mold (1) and split inner mold (2); The split inner mold (2) includes an inner mold long side (201) arranged along the inner side of the long side of the outer mold (1) and an inner mold short side (202) arranged along the inner side of the short side of the outer mold (1). The split inner mold (2) also includes an inner mold bottom surface (203) located at its bottom; The carbon fiber equipment compartment bottom plate (3) is placed inside the split inner mold (2); The mating surfaces of the outer mold (1) and the split inner mold (2) are inclined surfaces.

2. The composite mold for the carbon fiber equipment compartment floor plate of a high-speed train according to claim 1, characterized in that, The outer mold (1) is configured as a cuboid structure with a length of 2000 mm, a width of 1000 mm, and a height of 30 mm, and the upper end of the outer mold (1) is open; The outer mold (1) has a thickness of 2mm and is made of 5083 aluminum alloy. The outer mold (1) has multiple thin ribs (101) that extend along the length of the outer mold (1) at intervals inside.

3. The composite mold for the carbon fiber equipment compartment floor plate of a high-speed train according to claim 2, characterized in that, The outer mold (1) has 11 thin rib plates (101) arranged at intervals inside; The length of the thin rib plate (101) is the same as the length of the outer mold (1); The thin rib plate (101) has a height of 30mm and a thickness of 1.5mm. The thin rib plate (101) is welded and fixed to the bottom surface of the outer mold and is perpendicular to the bottom surface of the outer mold. The thin rib plate (101) is provided with a plurality of circular holes (102) spaced apart.

4. A composite mold for the carbon fiber equipment compartment floor plate of a high-speed train according to claim 2 or 3, characterized in that, The outer mold (1) has 45° inclined surfaces on both its long and short sides.

5. A composite mold for the carbon fiber equipment compartment floor plate of a high-speed train according to claim 4, characterized in that, The inner mold long side (201) has a long side 45° inclined surface (204) that matches the long side 45° inclined surface of the outer mold (1); The long side (201) of the inner mold that contacts the bottom plate (3) of the carbon fiber equipment compartment has a conformal groove (205) that matches the bottom plate (3) of the carbon fiber equipment compartment; The inner mold has hexagonal holes (207) at both ends along its long side (201).

6. A composite mold for the carbon fiber equipment compartment floor plate of a high-speed train according to claim 5, characterized in that, The short side (202) of the inner mold has a short side 45° inclined surface (206) that matches the 45° inclined surface of the short side of the outer mold (1); The inner mold has hexagonal holes (207) at both ends along its length of the short side (202).

7. A composite mold for the carbon fiber equipment compartment floor plate of a high-speed train according to claim 6, characterized in that, The bottom surface (203) of the inner mold mates with the inner side of the bottom surface of the outer mold, and the four sides of the bottom surface (203) of the inner mold have a bottom surface with a 45° slope that mates with the 45° slope of the outer mold (1).

8. A composite mold for the carbon fiber equipment compartment floor plate of a high-speed train according to claim 7, characterized in that, The material of the split inner mold (2) is No. 45 mold steel.

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