Composite carbon fiber cellular board forming tool and equipment

Abstract

The utility model provides a composite carbon fiber honeycomb plate forming tool and equipment. The composite carbon fiber honeycomb plate forming tool comprises an upper metal positioning plate, a lower metal positioning plate, a carbon fiber constraint mold frame and positioning carbon strips, the upper metal positioning plate and the lower metal positioning plate are arranged in a stacking manner, and an operation area for placing the carbon fiber honeycomb plate is arranged between the upper metal positioning plate and the lower metal positioning plate; the carbon fiber restraining module frame is arranged on the periphery of the metal lower positioning plate in a surrounding mode and restrains thermal extension of the metal lower positioning plate, and the positioning carbon strip is arranged on the carbon fiber restraining module frame and restrains thermal extension of the metal upper positioning plate. According to the utility model, the metal upper positioning plate and the metal lower positioning plate are adopted, and thermal extension constraint is carried out on the upper positioning plate and the lower positioning plate through the carbon fiber constraint mold frame and the positioning carbon strips, so that the carbon fiber honeycomb plate processing tool can be used for processing the carbon fiber honeycomb plate, and the tool cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of honeycomb panels, in particular to a composite carbon fiber honeycomb panel forming tool. Background Art

[0002] As the high performance advantages of carbon fiber materials become more and more popular, many products are gradually beginning to use carbon fiber materials as partial replacements. Carbon fiber honeycomb panels, with the help of the high strength, low mass and impact resistance of carbon fiber materials, are often used in products that require high strength and high support, such as the carbon fiber side walls of high-speed railways. Thanks to the hexagonal rhombus structure of the honeycomb material, the carbon fiber honeycomb panels have high support and also have the performance advantages of thermal insulation.

[0003] The production process of carbon fiber honeycomb panels is similar to that of carbon fiber boards. A mold is made according to the size of the carbon fiber honeycomb panel. Carbon fiber is laid on the bottom layer of the mold. After the bottom carbon fiber board is laid, the surrounding carbon fiber boards are also laid. At this point, the carbon fiber materials on the bottom and surrounding carbon fiber honeycomb panels are completed. Then, the honeycomb material of the right size is placed in it. Resin glue is applied to the top of the honeycomb panel, and the carbon fiber material is laid on the top. Finally, the mold cover is placed and hot pressing is carried out for curing.

[0004] The upper and lower positioning plates of the existing carbon fiber honeycomb panel forming tooling are both made of carbon fiber composite materials, and the carbon fiber composite materials with corresponding temperature resistance performance need to be selected according to the temperature resistance of the product, which results in high tooling costs. Utility Model Content

[0005] In view of the defects in the prior art, the purpose of the present invention is to provide a composite carbon fiber honeycomb panel forming tool.

[0006] According to the utility model, a composite carbon fiber honeycomb panel forming tool is provided, comprising: a metal upper positioning plate, a metal lower positioning plate, a carbon fiber constraint mold frame and a positioning carbon strip;

[0007] The metal upper positioning plate and the metal lower positioning plate are stacked, and an operating area for placing the carbon fiber honeycomb panel is provided between the metal upper positioning plate and the metal lower positioning plate; the carbon fiber constraint mold frame is surrounded by the metal lower positioning plate to constrain the thermal extension of the metal lower positioning plate, and the positioning carbon bar is provided on the carbon fiber constraint module to constrain the thermal extension of the metal upper positioning plate.

[0008] Preferably, it also includes a heat-insulating carbon plate;

[0009] The molding tool is placed on the curing platform during operation, and the heat-insulating carbon plate is located between the metal lower positioning plate and the curing platform.

[0010] Preferably, it also includes a heat-conducting aluminum plate;

[0011] The heat-conducting aluminum plate is arranged between the heat-insulating carbon plate and the metal lower plate.

[0012] Preferably, it further comprises a metal backing plate;

[0013] The metal pad is arranged between the metal lower positioning plate and the heat-conducting aluminum plate.

[0014] Preferably, the carbon fiber constraining mold frame and the metal lower positioning plate are set in close contact or with a gap.

[0015] Preferably, the carbon fiber constraining mold frame and the metal lower positioning plate are constrained with a gap of 0.05 to 0.1 mm.

[0016] Preferably, both the upper metal positioning plate and the lower metal positioning plate are provided with positioning holes, which are plugged into and matched with the positioning embedded parts provided on the carbon fiber honeycomb panel to limit the position of the carbon fiber honeycomb panel.

[0017] Preferably, the product contact surface of the metal lower positioning plate is provided with a single-sided adhesive polytetrafluoroethylene release cloth.

[0018] Preferably, the carbon fiber constraint module limits and constrains the metal pad and the metal lower positioning plate, and the positioning carbon strip limits and constrains the carbon fiber honeycomb panel and the metal upper positioning plate.

[0019] The utility model provides a composite carbon fiber honeycomb panel forming device, which includes the composite carbon fiber honeycomb panel forming tooling.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The utility model adopts metal upper and lower positioning plates, and uses carbon fiber constraint mold frames and positioning carbon strips to constrain the upper and lower positioning plates from thermal expansion, so that they can be used for the processing of carbon fiber honeycomb panels, reducing tooling costs.

[0022] 2. The upper and lower panels of the carbon fiber honeycomb panel used in this utility model are in direct contact with the aluminum plate tooling with good thermal conductivity, ensuring the temperature consistency of the upper and lower panels of the product and ensuring good flatness of the product.

[0023] 3. The heat-insulating carbon plate in the present invention isolates the temperature of the honeycomb panel forming tooling from the curing platform, ensuring that the temperature of the carbon fiber honeycomb panel product and tooling above the heat-insulating carbon plate is not affected by the heat transfer of the curing platform. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Other features, objects and advantages of the present invention will become more apparent from the detailed description of the non-limiting embodiments with reference to the following drawings:

[0025] Figure 1 It is a three-dimensional schematic diagram of the forming tooling in the present utility model;

[0026] Figure 2 It is a cross-sectional view of the forming tooling in the present utility model;

[0027] Figure 3 It is a cross-sectional view of the utility model with positioning embedded parts.

[0028] Description of reference numerals:

[0029] DETAILED DESCRIPTION

[0030] The present invention will be described in detail below with reference to specific embodiments. The following embodiments will help those skilled in the art further understand the present invention, but are not intended to limit the present invention in any way. It should be noted that a person skilled in the art may make various variations and improvements without departing from the scope of the present invention. Such variations and improvements are all within the scope of protection of the present invention.

[0031] The utility model discloses a composite carbon fiber honeycomb panel forming tool, comprising: a metal upper positioning plate 10, a metal lower positioning plate 11, a heat-insulating carbon plate 14, a heat-conducting aluminum plate 13, a metal backing plate 12, a carbon fiber constraint mold frame 15 and a positioning carbon strip 16;

[0032] The multiple components are stacked, from top to bottom, and include a metal upper positioning plate 10, a carbon fiber honeycomb panel, a metal lower positioning plate 11, a metal backing plate 12, a heat-conducting aluminum plate 13, a heat-insulating carbon plate 14, and a curing platform 18 at the bottom as support. A work area for placing the carbon fiber honeycomb panel is located between the metal upper positioning plate 10 and the metal lower positioning plate 11. The upper panel 20, honeycomb core 21, and lower panel 22 that comprise the carbon fiber honeycomb panel are hot-pressed and formed in this work area. A carbon fiber constraint mold frame 15 surrounds the metal lower positioning plate 11 to constrain its thermal expansion. Positioning carbon bars 16 are located on the carbon fiber constraint module to constrain the thermal expansion of the metal upper positioning plate 10.

[0033] Among them, the metal pad 12 is used to avoid the heads of the screws of the metal lower positioning plate 11, ensuring the flatness of the lower surface of the tooling structure, and thus ensuring the flatness of the honeycomb panel. The heat-conducting aluminum plate 13 is used to increase the heating rate of the lower panel 22, reduce the temperature difference between the upper and lower surfaces, and thus reduce the stress within the structure and ensure the flatness of the structure. The lower panel 22 is attached to the curing platform, and the upper surface is close to the air. Due to the large thermal conductivity of the curing platform and the large deviation from the air, the temperature difference between the upper and lower panels of the honeycomb panel will be large. Therefore, a heat-conducting aluminum plate 13 is set on the metal lower positioning plate 11 to increase the heating rate of the lower panel 22 and ensure the flatness of the structure.

[0034] The curing platform 18 provides a good bottom surface for curing the carbon fiber honeycomb panel. The insulating carbon plate 14 isolates the temperature of the honeycomb panel forming tooling from the curing platform 18, ensuring that the temperature of the carbon fiber honeycomb panel product and tooling above the insulating carbon plate 14 is not affected by the heat transfer from the curing platform 18. In a preferred embodiment, the curing platform 18 is made of cast iron.

[0035] The upper panel 20 and the lower panel 22 of the carbon fiber honeycomb panel are in direct contact with the aluminum plate tooling with good thermal conductivity, ensuring the temperature consistency of the upper and lower panels 22 of the product and ensuring good flatness of the product;

[0036] The metal lower positioning plate 11 is processed with a positioning hole 17 for the honeycomb panel lower positioning embedded part 23, and is constrained by a carbon fiber constraint mold frame 15 on all sides with a single-side fit clearance of 0.05mm to 0.1mm to ensure that when the carbon fiber honeycomb panel is heated and cured, the deformation of the metal lower positioning plate 11 is restricted by the carbon fiber constraint mold frame 15, and the deformation of the metal lower positioning plate 11 is consistent with the deformation of the carbon fiber honeycomb panel product, thereby ensuring the flatness and hole size accuracy of the final product.

[0037] A positioning hole 17 for the positioning embedded part 23 on the honeycomb panel is processed on the metal upper positioning plate 10, and is constrained by positioning carbon strips 16 on all sides. The positioning carbon strips 16 are placed above the carbon fiber constraint mold frame 15, and the two are fitted together. The positioning carbon strips 16 and the carbon fiber constraint mold frame 15 are connected with pin screws. The upper positioning plate and the positioning carbon strips 16 have a single-sided fitting clearance of 0.05mm to 0.1mm for constraint, to ensure that when the carbon fiber honeycomb panel is heated and cured, the deformation of the metal upper positioning plate 10 is restricted by the positioning carbon strips 16, and the deformation of the metal upper positioning plate 10 is consistent with the deformation of the carbon fiber honeycomb panel product, thereby ensuring the flatness and hole size accuracy of the final product.

[0038] The method of using the molding tool disclosed in the utility model is:

[0039] (1) Lay the heat-insulating carbon plate 14 on the curing platform 18, and place the heat-conducting aluminum plate 13 and the metal pad 12 on the heat-insulating carbon plate 14 in sequence;

[0040] (2) A layer of single-sided adhesive polytetrafluoroethylene release cloth is applied to the product contact surface of the metal lower positioning plate 11 to isolate it from the product;

[0041] (3) Assemble the metal lower positioning plate 11 and the carbon fiber constraint mold frame 15 by tightly fitting the universal shape;

[0042] (4) Assemble the positioning carbon strip 16 and the carbon fiber constraint mold frame 15 using pin screws;

[0043] (5) Assemble the skin, honeycomb core 21, embedded parts and other parts on the metal lower positioning plate 11 in sequence;

[0044] (6) Assemble the metal upper positioning plate 10, whose shape is tightly matched with the positioning carbon strip 16 for restraint;

[0045] (7) Prepare a curing vacuum bag and put the carbon fiber honeycomb panel into the furnace for curing;

[0046] (8) After curing is completed, the metal upper positioning plate 10, the positioning carbon strip 16 and the metal lower positioning plate 11 are removed in sequence to complete the molding of the carbon fiber honeycomb panel product.

[0047] In the description of this application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0048] The above describes specific embodiments of the present invention. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art may make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. The embodiments of this application and the features in the embodiments may be combined with each other in any manner unless there is a conflict.

Claims

1. A composite carbon fiber honeycomb panel forming tool, characterized in that: include: A metal upper positioning plate (10), a metal lower positioning plate (11), a carbon fiber constraint mold frame (15), and a positioning carbon bar (16); The metal upper positioning plate (10) and the metal lower positioning plate (11) are stacked, and an operating area for placing a carbon fiber honeycomb panel is provided between the metal upper positioning plate (10) and the metal lower positioning plate (11); the carbon fiber constraint mold frame (15) is arranged around the metal lower positioning plate (11) to constrain the thermal extension of the metal lower positioning plate (11); the positioning carbon bar (16) is arranged on the carbon fiber constraint module, and the positioning carbon bar (16) constrains the thermal extension of the metal upper positioning plate (10).

2. The composite carbon fiber honeycomb panel forming tool according to claim 1, characterized in that: Also included is a heat-insulating carbon plate (14); The molding tool is placed on a curing platform (18) during operation, and the heat-insulating carbon plate (14) is located between the metal lower positioning plate (11) and the curing platform (18).

3. The composite carbon fiber honeycomb panel forming tool according to claim 2, characterized in that: Also includes a heat-conducting aluminum plate (13); The heat-conducting aluminum plate (13) is arranged between the heat-insulating carbon plate (14) and the metal lower plate.

4. The composite carbon fiber honeycomb panel forming tool according to claim 3, characterized in that: Also includes a metal backing plate (12); The metal pad (12) is arranged between the metal lower positioning plate (11) and the heat-conducting aluminum plate (13).

5. The composite carbon fiber honeycomb panel forming tool according to claim 1, characterized in that: The carbon fiber restraint mold frame (15) and the metal lower positioning plate (11) are arranged in close contact or with a gap.

6. The composite carbon fiber honeycomb panel forming tool according to claim 5, characterized in that: The carbon fiber constraining mold frame (15) and the metal lower positioning plate (11) are constrained with a gap of 0.05 to 0.1 mm.

7. The composite carbon fiber honeycomb panel forming tool according to claim 1, characterized in that: The metal upper positioning plate (10) and the metal lower positioning plate (11) are both provided with positioning holes (17) which are plugged into and matched with positioning embedded parts (23) provided on the carbon fiber honeycomb panel to limit the position of the carbon fiber honeycomb panel.

8. The composite carbon fiber honeycomb panel forming tool according to claim 1, characterized in that: The product contact surface of the metal lower positioning plate (11) is provided with a single-sided adhesive polytetrafluoroethylene release cloth.

9. The composite carbon fiber honeycomb panel forming tool according to claim 4, characterized in that: The carbon fiber constraint module performs position limiting constraints on the metal pad (12) and the metal lower positioning plate (11), and the positioning carbon strip (16) performs position limiting constraints on the carbon fiber honeycomb panel and the metal upper positioning plate (10).

10. A composite carbon fiber honeycomb panel forming device, characterized in that: A composite carbon fiber honeycomb panel forming tool comprising any one of claims 1 to 9.

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