Multi-point flexible gas-assisted forming equipment for curved surface of fiber composite material

Abstract

The utility model discloses multi-point flexible gas-assisted forming equipment for a curved surface of a fiber composite material, which belongs to the technical field of the curved surface of the fiber composite material, aims at solving the problem of long cooling time after the curved surface of the fiber composite material is hot-pressed, and comprises a bottom plate, a multi-point mold is connected to the top surface of the bottom plate through a guide rail, and guide columns are fixedly connected to four corners of the top surface of the bottom plate; the top ends of the four guide columns are fixedly connected with the same top plate. A cooling mechanism is arranged on the outer wall of one side of the bottom plate. Under the action of the cooling mechanism, the fan is started to generate cooling air, and the cooling air is blown to the joint of the air cavity and the multi-point mold through the air outlet pipeline, so that the flowability of the air is greatly improved, and the larger-diameter end of the funnel-shaped air outlet pipeline is close to the joint of the air cavity and the multi-point mold; the air flow range of cooling air is expanded, the heated silica gel pad and the curved surface of the fiber composite material are well cooled, the cooling efficiency is improved, and the problem that the cooling time is long after the curved surface of the fiber composite material is subjected to hot pressing is effectively solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of fiber composite curved surfaces, and in particular relates to a fiber composite curved surface multi-point flexible gas-assisted molding device. Background Art

[0002] Fiber composite materials are widely used in aerospace, rail transportation, shipbuilding, architectural decoration and other fields due to their excellent mechanical, thermal and chemical properties. Curved surface manufacturing is an important application of fiber composite materials. The main methods for forming curved surfaces of fiber composites are compression molding, hot pressing, pultrusion, diaphragm molding, etc. With the acceleration of product updates and the improvement of product personalization requirements, the demand for small batch production is increasing. Traditional molds cannot meet the frequently changing technical requirements, which can easily lead to waste of manpower, material and time resources. Therefore, related processes are in urgent need of improvement.

[0003] In the prior art, the height of the multi-point flexible mold unit can be adjusted within a certain range, and the rapid configuration of complex curved surfaces can be completed. Therefore, the products produced by multi-point flexible technology are highly adjustable and can be well adapted to small batch diversified production, with the advantages of reducing manpower, material and time costs. However, in the prior art, the fiber composite curved surface is usually cooled naturally after hot pressing, which has low cooling efficiency and a long manufacturing cycle.

[0004] Therefore, a fiber composite curved surface multi-point flexible gas-assisted molding device is needed to solve the problem of long cooling time after hot pressing of the fiber composite curved surface in the prior art. Utility Model Content

[0005] The utility model aims to provide a fiber composite curved surface multi-point flexible gas-assisted molding device to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a fiber composite curved surface multi-point flexible gas-assisted molding equipment, comprising a bottom plate, the top surface of the bottom plate is connected to a multi-point mold through a guide rail, the four corners of the top surface of the bottom plate are fixedly connected with guide columns, the top ends of the four guide columns are fixedly connected to the same top plate, a crank is threadedly inserted at the center of the top surface of the top plate, the outer surfaces of the four guide columns are slidingly sleeved with the same lower pressure plate, the bottom end of the crank is rotatably connected to the top surface of the lower pressure plate, the bottom surface of the lower pressure plate is fixedly connected with an air cavity, a cooling mechanism is arranged on the outer wall of one side of the bottom plate, an air control component is arranged on one side of the air cavity, and a temperature control box is fixedly connected to the top surface of the top plate;

[0007] The cooling mechanism includes an L-shaped plate, an outer wall on one side of the horizontal section of the L-shaped plate is fixedly connected to an outer wall on one side of the bottom plate, an outer wall on one side of the vertical section of the L-shaped plate is fixedly connected to a fan, an outer wall on the other side of the vertical section of the L-shaped plate is fixedly connected to an air outlet duct, and an output end of the fan passes through an outer wall on one side of the vertical section of the L-shaped plate and is fixedly connected to the air outlet duct.

[0008] It should be noted in the scheme that the air control component includes an air compressor with a built-in pressure regulating switch, a pressure regulating valve is installed on the outer surface of the air compressor, a three-way pipe is arranged on the top of the outer surface of the air compressor, a pressure gauge is installed at one end of the three-way pipe, and a hose is fixedly connected to the other end of the three-way pipe.

[0009] It is further worth noting that two parallelly distributed heating rods are arranged between the inner walls on both sides of the air cavity and the inner walls at both ends, and three evenly distributed buckles are fixedly connected to the outer walls on both sides of the air cavity.

[0010] It should be further explained that the bottom surface of the air cavity is clamped with the same pressure ring through a plurality of buckles, and the outer wall of one side of the air cavity is fixedly connected with an air inlet pipe.

[0011] As a preferred implementation, the temperature control box is composed of a relay, a microcomputer and a power supply, and the temperature control box is electrically connected to the heating rod.

[0012] As a preferred implementation, the multi-point mold is located directly below the air cavity, and the side of the air inlet pipe away from the air cavity is fixedly connected to the hose.

[0013] Compared with the prior art, the fiber composite curved surface multi-point flexible gas-assisted molding equipment provided by the utility model has at least the following beneficial effects:

[0014] (1) Through the action of the cooling mechanism, the fan is turned on to generate cooling air, and the cooling air is blown to the joint between the air cavity and the multi-point mold through the air outlet duct, which greatly improves the fluidity of the air. The end of the funnel-shaped air outlet duct with a larger diameter is close to the joint between the air cavity and the multi-point mold, which expands the air flow range of the cooling air, and better cools the heated silicone pad and the fiber composite curved surface, thereby improving the cooling efficiency and effectively avoiding the problem of a long cooling time of the fiber composite curved surface after hot pressing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the front cross-sectional structure of the air cavity of the utility model;

[0017] Figure 3 This is a schematic diagram of the cooling mechanism structure of the utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the gas control component of the utility model.

[0019] In the figure: 1. bottom plate; 2. multi-point mold; 3. guide column; 4. top plate; 5. crank handle; 6. lower pressure plate; 7. air cavity; 8. cooling mechanism; 81. L-shaped plate; 82. fan; 83. air outlet duct; 9. air control component; 91. air compressor; 92. pressure regulating valve; 93. three-way pipe; 94. pressure gauge; 95. hose; 10. temperature control box; 11. heating rod; 12. buckle; 13. pressure ring; 14. air inlet pipe. DETAILED DESCRIPTION

[0020] The present invention will be further described below in conjunction with the embodiments.

[0021] See also Figure 1-Figure 4 The utility model provides a fiber composite curved surface multi-point flexible gas-assisted molding equipment, including a bottom plate 1, the top surface of the bottom plate 1 is connected to a multi-point mold 2 through a guide rail, the multi-point mold 2 has a plurality of punches, the top end is a swing head with X, Y axis rotation freedom, the four corners of the top surface of the bottom plate 1 are fixedly connected with guide columns 3, the top ends of the four guide columns 3 are fixedly connected with the same top plate 4, the center of the top surface of the top plate 4 is threadedly plugged with a crank 5, the outer surfaces of the four guide columns 3 are slidingly sleeved with the same lower pressing plate 6, the bottom end of the crank 5 is rotatably connected to the top surface of the lower pressing plate 6, the bottom surface of the lower pressing plate 6 is fixedly connected with an air cavity 7, a cooling mechanism 8 is arranged on the outer wall of one side of the bottom plate 1, a gas control component 9 is arranged on one side of the air cavity 7, and a temperature control box 10 is fixedly connected to the top surface of the top plate 4;

[0022] The cooling mechanism 8 includes an L-shaped plate 81, an outer wall on one side of the horizontal section of the L-shaped plate 81 is fixedly connected to an outer wall on one side of the bottom plate 1, an outer wall on one side of the vertical section of the L-shaped plate 81 is fixedly connected to a fan 82, an outer wall on the other side of the vertical section of the L-shaped plate 81 is fixedly connected to an air outlet duct 83, and an output end of the fan 82 passes through an outer wall on one side of the vertical section of the L-shaped plate 81 and is fixedly connected to the air outlet duct 83.

[0023] Further Figure 1 and Figure 4 As shown, it is worth explaining in detail that the air control component 9 includes an air compressor 91 with a built-in pressure regulating switch, a pressure regulating valve 92 is installed on the outer surface of the air compressor 91, a three-way pipe 93 is arranged on the top of the outer surface of the air compressor 91, a pressure gauge 94 is installed at one end of the three-way pipe 93, and a hose 95 is fixedly connected to the other end of the three-way pipe 93.

[0024] Further Figure 2 As shown, it is worth explaining in detail that two parallel heating rods 11 are arranged between the inner walls on both sides of the air cavity 7 and the inner walls at both ends, and three evenly distributed buckles 12 are fixedly connected to the outer walls on both sides of the air cavity 7.

[0025] Further as Figure 2 As shown, it is worth explaining in detail that the bottom surface of the air cavity 7 is clamped with the same pressure ring 13 through multiple buckles 12, and the outer wall of one side of the air cavity 7 is fixedly connected with an air inlet pipe 14.

[0026] Further as Figure 1 and Figure 2 As shown, it is worth specifying that the temperature control box 10 is composed of a relay, a microcomputer and a power supply. The temperature control box 10 is electrically connected to the heating rod 11. Four channel temperatures are set in the operation interface of the temperature control box 10. Channel one controls the two heating rods 11 at the bottom of the air cavity 7. The setting column of channel two is the temperature of the molded part, and the display column is the thermocouple test temperature located at the edge of the molded part. Channel three and channel four control the two heating rods 11 above the air cavity 7 separately. Temperature control two can control the temperature of the two heating rods 11 at the bottom of the air cavity 7. When the temperature of temperature control two reaches the set value, and temperature control one has not reached the set value at this time, the two heating rods 11 at the bottom of the air cavity 7 will also stop heating, thereby keeping the molding temperature stable.

[0027] Further as Figure 1 , Figure 2 and Figure 4 As shown, it is worth explaining in detail that the multi-point mold 2 is located directly below the air cavity 7, which facilitates the cooperation between the multi-point mold 2 and the air cavity 7. The side of the air inlet pipe 14 away from the air cavity 7 is fixedly connected to the hose 95 to achieve inflation of the interior of the air cavity 7.

[0028] In summary: when the device is used, the prepreg is first cut into square sheets and aligned, a release agent is sprayed between two layers of silicone pads, the silicone pad and the fiber composite are installed under the air cavity 7 in a "sandwich" shape, and then connected to the multi-point mold 2 through an external device, the punch coordinate height is obtained through a contact command and adjusted by a handheld motor to complete the shape adjustment of the multi-point mold 2, and then the air compressor 91 is turned on to inflate the air cavity 7 to make the silicone pad bulge, and the pressure regulating valve 92 is adjusted and the pressure gauge 94 is observed to adjust the input air to a stable level. After pressing, the crank handle 5 is shaken to drive the lower pressing plate 6 and the air cavity 7 to move downward, so that the silicone pad fits the multi-point mold 2, and the pressure regulating valve 92 is readjusted. After the molding pressure is determined, the temperature control box 10 is turned on to control the four heating rods 11 for heating, so that the fiber composite gradually softens and deforms and flows under the action of pressure. After heating for a certain period of time, the heating rods 11 are turned off through the temperature control box 10 and wait for cooling. The pressure is maintained during the cooling process to ensure that the fiber composite is closely fitted to the multi-point mold 2. After cooling, the silicone pad is removed for demoulding to obtain a fiber composite curved surface.

[0029] When the fiber composite curved surface is cooled, the fan 82 is turned on to generate cooling air, and the cooling air is blown toward the joint between the air cavity 7 and the multi-point mold 2 through the air outlet duct 83, which greatly improves the fluidity of the air. The end of the funnel-shaped air outlet duct 83 with a larger diameter is close to the joint between the air cavity 7 and the multi-point mold 2, which expands the air flow range of the cooling air, and better cools the heated silicone pad and the fiber composite curved surface, thereby improving the cooling efficiency and effectively avoiding the problem of a long cooling time of the fiber composite curved surface after hot pressing.

[0030] The fan 82, the air compressor 91 and the heating rod 11 can be purchased on the market. The fan 82, the air compressor 91 and the heating rod 11 are equipped with a power supply. They are mature technologies in this field and have been fully disclosed, so they are not repeated in the specification.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A fiber composite curved surface multi-point flexible gas-assisted molding device, comprising a base plate (1), characterized in that: The top surface of the bottom plate (1) is connected to a multi-point mold (2) via a guide rail, and guide columns (3) are fixedly connected at the four corners of the top surface of the bottom plate (1), and the top ends of the four guide columns (3) are fixedly connected to the same top plate (4). A crank handle (5) is threadedly inserted at the center of the top surface of the top plate (4), and the outer surfaces of the four guide columns (3) are slidingly sleeved with the same lower pressure plate (6), and the bottom end of the crank handle (5) is rotatably connected to the top surface of the lower pressure plate (6), and the bottom surface of the lower pressure plate (6) is fixedly connected to an air cavity (7), a cooling mechanism (8) is provided on the outer wall of one side of the bottom plate (1), and an air control component (9) is provided on one side of the air cavity (7), and a temperature control box (10) is fixedly connected to the top surface of the top plate (4); The cooling mechanism (8) comprises an L-shaped plate (81), wherein an outer wall on one side of a transverse section of the L-shaped plate (81) is fixedly connected to an outer wall on one side of a bottom plate (1), an outer wall on one side of a vertical section of the L-shaped plate (81) is fixedly connected to a fan (82), an outer wall on the other side of the vertical section of the L-shaped plate (81) is fixedly connected to an air outlet duct (83), and an output end of the fan (82) passes through an outer wall on one side of the vertical section of the L-shaped plate (81) and is fixedly connected to the air outlet duct (83).

2. The fiber composite curved surface multi-point flexible gas-assisted molding equipment according to claim 1, characterized in that: The air control component (9) comprises an air compressor (91) with a built-in pressure regulating switch, a pressure regulating valve (92) is installed on the outer surface of the air compressor (91), a three-way pipe (93) is arranged on the top of the outer surface of the air compressor (91), a pressure gauge (94) is installed at one end of the three-way pipe (93), and a hose (95) is fixedly connected to the other end of the three-way pipe (93).

3. The fiber composite curved surface multi-point flexible gas-assisted molding equipment according to claim 2, characterized in that: Two parallel distributed heating rods (11) are arranged between the inner walls on both sides and the inner walls at both ends of the air cavity (7), and three evenly distributed buckles (12) are fixedly connected to the outer walls on both sides of the air cavity (7).

4. The fiber composite curved surface multi-point flexible gas-assisted molding equipment according to claim 3, characterized in that: The bottom surface of the air cavity (7) is clamped with a same pressure ring (13) via a plurality of buckles (12), and an outer wall on one side of the air cavity (7) is fixedly connected to an air inlet pipe (14).

5. The fiber composite curved surface multi-point flexible gas-assisted molding equipment according to claim 4, characterized in that: The temperature control box (10) is composed of a relay, a microcomputer and a power supply, and the temperature control box (10) is electrically connected to the heating rod (11).

6. The fiber composite curved surface multi-point flexible gas-assisted molding equipment according to claim 4, characterized in that: The multi-point mold (2) is located directly below the air cavity (7), and the side of the air inlet pipe (14) away from the air cavity (7) is fixedly connected to the hose (95).

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