Flange composite material special-shaped support frame forming die

Abstract

The utility model relates to composite material forming die technical field discloses a kind of flange composite material special-shaped support frame forming die, including upper die, lower die and movable block, upper die and lower die are matched cover structure, after moulding, the cavity that is formed with flange composite material special-shaped support frame shape adaptation is formed inside, movable block is fixed in the inside of upper die and lower die, for to the special-shaped support frame of composite material is shaped and fixed, the outer side of upper die and lower die is equipped with respectively for handling mould hoist piece and for the accurate alignment of upper die and lower die positioning piece.Can improve product quality, movable block is fixed and placed in the inside of upper die and lower die, positioning piece is equipped on upper die and lower die simultaneously, ensure that cavity shape is stable, effectively control product shape size precision;Hoist piece is convenient for mould handling, temperature monitoring piece realizes temperature accurate monitoring, positioning piece ensures moulding accuracy.

Description

Technical Field

[0001] This utility model relates to the field of composite material molding die technology, and more specifically, to a molding die for a flanged composite material irregular support frame. Background Technology

[0002] Composite materials are made by combining two or more materials with different properties through physical or chemical methods to create materials with new macroscopic properties. They combine the excellent characteristics of multiple materials, such as high strength, lightweight, and corrosion resistance, and are therefore widely used in many fields such as aerospace, automotive, rail transportation, shipbuilding, and construction. Flange-mounted composite irregular support frames, as a typical composite structural component, usually have an irregular frame structure and a flange on one side. Their molding quality directly affects the overall assembly accuracy and mechanical properties.

[0003] Currently, the traditional method for molding composite material support frames with flanges is the autoclave process. However, the mold structure used in the autoclave process is complex, making it difficult to simultaneously ensure the flatness and smoothness of the inner and outer surfaces of the product, and also making it impossible to accurately control the product's dimensions, easily leading to problems such as dimensional deviations and surface defects. In addition, the autoclave process is expensive, energy-intensive, and involves cumbersome production steps, resulting in high manufacturing costs and low production efficiency, making it difficult to meet the needs of large-scale production.

[0004] To address the problems existing in the prior art, namely the shortcomings of autoclave process in forming flanged composite material irregular support frames, such as difficulty in ensuring product quality, high cost, and low efficiency, this application provides a forming mold for flanged composite material irregular support frames. The aim is to achieve one-time forming of the product by optimizing the mold structure design, thereby improving production efficiency, reducing manufacturing costs, and ensuring the quality of the inner and outer surfaces and the accuracy of the product's dimensions. Utility Model Content

[0005] The purpose of this invention is to provide a molding die for flanged composite material irregular support frames, to solve the problems of poor product quality, high cost, and low efficiency in the existing autoclave process for molding flanged composite material irregular support frames. This die, through optimized structural design, achieves one-time molding of the product, ensuring the quality of internal and external surfaces and dimensional accuracy, while reducing costs and improving production efficiency.

[0006] To achieve the above objectives, this utility model provides the following solution: This utility model provides a molding die for a flanged composite material irregular support frame, comprising: an upper die, a lower die, and a movable block. The upper die and the lower die are a matching cover structure, and after the die is closed, a cavity is formed inside that is adapted to the shape of the flanged composite material irregular support frame. The movable block is fixed inside the upper die and the lower die for shaping and fixing the composite material irregular support frame. The upper die and the lower die are respectively provided with lifting parts for transporting the die and positioning parts for precise alignment of the upper die and the lower die.

[0007] According to the present invention, a flanged composite material irregular support frame forming mold is provided, wherein the movable block includes a first movable block, a second movable block and a third movable block, and grooves are provided in both the upper mold and the lower mold. The grooves are used to accommodate and fix the first movable block, the second movable block and the third movable block, so as to realize the positioning and cooperation of the first movable block, the second movable block and the third movable block with the upper mold and the lower mold.

[0008] According to the present invention, a flanged composite material irregular support frame forming mold is provided, wherein the lifting component is a lifting ring, and the lifting ring is fixedly connected to the outside of the upper mold and the lower mold.

[0009] According to the present invention, a flanged composite material irregular support frame forming mold is provided, wherein the positioning element is a positioning pin, and the positioning pin is disposed through the upper mold and the lower mold.

[0010] According to the present invention, a flanged composite material irregular support frame forming mold is provided, wherein the upper mold and the lower mold are provided with temperature measuring holes, which are used to monitor the real-time temperature and heating rate of the mold.

[0011] According to the present invention, a flanged composite material irregular support frame forming mold is provided, wherein the upper mold and the lower mold are provided with mold release grooves at corresponding positions.

[0012] According to the present invention, a flanged composite material irregular support frame forming mold is provided, wherein the upper mold is further provided with an overflow groove, which is provided along the edge of the mold closing surface of the upper mold.

[0013] The present invention discloses the following technical effects:

[0014] This invention improves product quality. The movable block is fixedly placed inside the upper and lower molds, and positioning components are provided on the upper and lower molds to ensure the stability of the cavity shape and effectively control the dimensional accuracy of the product. The lifting component facilitates mold handling, the temperature monitoring component enables precise temperature monitoring, and the positioning component ensures mold closing accuracy. The synergistic effect of each functional component enhances the convenience and reliability of operation. It can improve production efficiency by adopting a combined molding structure to achieve one-time product molding, eliminating the multiple processes of traditional autoclave processes and eliminating the need for expensive autoclave equipment. The mold structure is simple and reusable. It reduces processes and energy consumption, and lowers equipment investment and production operating costs. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the upper mold in this utility model;

[0018] Figure 3 This is a schematic diagram of the lower mold structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the movable block in this utility model;

[0020] Figure 5 This is a schematic diagram of the irregular support frame in this utility model;

[0021] The components include: 1. Upper mold; 2. Lower mold; 3. First movable block; 4. Second movable block; 5. Third movable block; 6. Temperature measuring hole; 7. Lifting ring; 8. Positioning pin; 9. Mold release groove; 10. Glue overflow groove. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] like Figures 1 to 5 As shown, this utility model provides a molding die for a composite material irregular support frame with flange, including: an upper die 1, a lower die 2 and a movable block. The movable block is fixed inside the upper die 1 and the lower die 2 and is used to shape and fix the composite material irregular support frame. The upper die 1 and the lower die 2 are respectively provided with lifting parts for transporting the die and positioning parts for precise alignment of the upper die 1 and the lower die 2.

[0025] The mold in this utility model is a combined molding structure, mainly including an upper mold 1, a lower mold 2 and movable blocks. The movable blocks include a first movable block 3, a second movable block 4 and a third movable block 5. The upper mold 1 and the lower mold 2 are a matching cover structure. After the mold is closed, a cavity is formed inside that is adapted to the shape of the flanged composite material irregular support frame. The movable blocks are embedded inside the upper mold 1 and the lower mold 2, and as a component of the cavity, they directly contact the composite material and play a shaping role.

[0026] Both the upper mold 1 and the lower mold 2 have grooves (not shown). The shape and size of the grooves are adapted to the outlines of the first movable block 3, the second movable block 4, and the third movable block 5. During assembly, the first movable block 3, the second movable block 4, and the third movable block 5 are respectively embedded into their corresponding grooves. The inner wall of the groove fits tightly against the outer wall of the movable block, thus fixing and positioning the movable block. This structural design ensures that the movable block will not shift during the molding process, guaranteeing the shape stability of the composite material during molding, while also facilitating the disassembly and replacement of the movable block. Among them, the first movable block 3 and the second movable block 4 correspond to the main frame part of the irregular support frame, and the third movable block 5 corresponds to the flange connection part of the support frame. The positional distribution of the three corresponds one-to-one with the structure of the irregular support frame, together forming the complete outline of the cavity.

[0027] Temperature measuring holes 6 are provided on the upper mold 1 and the lower mold 2, extending through both molds. Specifically, the temperature measuring holes 6 are located along the thickness direction of the upper mold 1 and the lower mold 2, with one end communicating with the cavity and the other end extending to the outer wall of the mold, where a temperature sensor such as a thermocouple can be inserted. During operation, the temperature measuring holes 6 monitor the temperature and heating rate inside the mold cavity in real time. The operator can adjust the heating parameters of the molding machine based on the monitoring data to ensure that the composite material is stably molded at the preset curing temperature (120-130℃), avoiding incomplete curing or over-curing problems caused by temperature fluctuations.

[0028] The lifting component is a lifting ring 7, which is fixedly connected to the outside of the upper mold 1 and the lower mold 2, and is fixed to the mold body by bolts or welding. It facilitates the handling and lifting of the mold. During the assembly, closing, and removal of the mold from the molding press, the lifting ring 7 can be connected to the lifting equipment to achieve smooth movement of the mold, reduce the labor intensity of manual handling, and prevent the mold from deforming due to uneven stress.

[0029] The positioning component is a positioning pin 8, which is installed through the upper mold 1 and the lower mold 2. Positioning holes are provided at corresponding positions on the upper mold 1 and the lower mold 2. The dimensions of the positioning pin 8 and the positioning pin 8 hole are precisely matched. When the mold is closed, the positioning pin 8 is inserted into the positioning pin 8 hole to limit the relative displacement of the upper mold 1 and the lower mold 2 in the horizontal direction, ensuring that the two are precisely aligned, avoiding product size deviation due to mold closing deviation, and ensuring the consistency of the cavity shape.

[0030] The upper mold 1 and the lower mold 2 are provided with mold release grooves 9 at corresponding positions. A stop block is fixedly connected to the lower mold and surrounds the lower mold 2. A groove is provided in the area surrounded by the stop block, and a movable block is placed in the groove. The mold release groove 9 on the lower mold 2 is located on the top of the stop block at the four corners. The edge of the upper mold 1 is provided with a mold release groove 9. The depth and width of the mold release groove 9 are sufficient to accommodate the mold release tool. When opening the mold, the mold release tool is inserted into the mold release groove 9. The upper mold 1 and the lower mold 2 can be easily separated by lever principle, or the movable block can be removed. This solves the problem that the mold is difficult to separate due to the tight fit of the mold after molding, and improves the demolding efficiency.

[0031] The upper mold 1 is also provided with an overflow groove 10, which is connected to the cavity. During the molding process, excess resin and volatile gas in the composite material can be discharged from the cavity through the overflow groove 10, avoiding the product surface bulge or bubbles caused by resin accumulation, while reducing the impact of gas residue on the mechanical properties of the product, and ensuring the flatness and smoothness of the inner and outer surfaces of the product.

[0032] Working principle:

[0033] Pretreatment: Composite material prepreg is laid on the surfaces of the first movable block 3 and the second movable block 4 respectively. After laying, the two are embedded into the corresponding grooves of the lower mold 2. Then, prepreg is laid on the surface of the third movable block 5 and the corresponding position of the flange, and the third movable block 5 is embedded into the flange groove of the lower mold 2. At the same time, a pressure block is placed at the corresponding flange position.

[0034] Assembly and mold closing: Add twist strips to fill the gaps in the contact area of ​​the movable blocks. After inspecting the surface of the prepreg for defects such as wrinkles, protrusions, and pits, accurately align the upper mold 1 with the lower mold 2 using the positioning pin 8 and initially lock it with bolts.

[0035] Compression molding and curing: The mold is moved into the molding machine through the lifting ring 7. First, the pressure is increased to 2MPa and the temperature is increased to 90-95℃ to soften the prepreg. Then, the pressure is increased to 8-10MPa and the temperature is increased to 120-130℃. The temperature is monitored in real time through the temperature measuring hole 6. The curing is completed after 3 hours of heat preservation. During the process, the temperature of the mold is measured. When the mold temperature rises to 90℃, the preform softens and the resin on the prepreg has a certain fluidity. At this time, the bolts are tightened to ensure that the mold gap is ≤100μm. Excess resin and gas are discharged through the overflow tank 10.

[0036] Demolding and processing: After curing, the upper mold 1 and lower mold 2 are separated by the mold release groove 9. The movable block and the formed blank are taken out and then trimmed and polished to obtain the flanged composite material irregular support frame.

[0037] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., 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 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.

[0038] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A molding die for a composite material irregular support frame with a flange, characterized in that, include: The upper mold (1), the lower mold (2), and the movable block are provided. The upper mold (1) and the lower mold (2) are a matching cover structure. After the mold is closed, a cavity is formed inside that is adapted to the shape of the composite material irregular support frame with flange. The movable block is fixed inside the upper mold (1) and the lower mold (2) for shaping and fixing the composite material irregular support frame. The upper mold (1) and the lower mold (2) are respectively provided with lifting parts for transporting the mold and positioning parts for precise alignment of the upper mold (1) and the lower mold (2).

2. The molding die for the flanged composite material irregular support frame according to claim 1, characterized in that: The movable blocks include a first movable block (3), a second movable block (4), and a third movable block (5). The upper mold (1) and the lower mold (2) are both provided with grooves. The grooves are used to accommodate and fix the first movable block (3), the second movable block (4), and the third movable block (5) so as to achieve the positioning and cooperation of the first movable block (3), the second movable block (4), and the third movable block (5) with the upper mold (1) and the lower mold (2).

3. The molding die for the flanged composite material irregular support frame according to claim 1, characterized in that: The lifting component is a lifting ring (7), which is fixedly connected to the outside of the upper mold (1) and the lower mold (2).

4. The molding die for the flanged composite material irregular support frame according to claim 1, characterized in that: The positioning component is a positioning pin (8), which is disposed through the upper mold (1) and the lower mold (2).

5. The molding die for the flanged composite material irregular support frame according to claim 1, characterized in that: Temperature measuring holes (6) are provided on the upper mold (1) and the lower mold (2). The temperature measuring holes (6) are used to monitor the real-time temperature and heating rate of the mold.

6. The molding die for the flanged composite material irregular support frame according to claim 1, characterized in that: The upper mold (1) and the lower mold (2) are also provided with corresponding mold release grooves (9).

7. The molding die for the flanged composite material irregular support frame according to claim 1, characterized in that: The upper mold (1) is also provided with an overflow groove (10), which is provided along the edge of the mold closing surface of the upper mold (1).

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