Aviation multilayer material forming device

Abstract

The utility model discloses an aviation multilayer material forming device which comprises a bottom plate, an up-down driving device, a translation driving device and a multilayer material body, and the overlook projection of the bottom plate is rectangular. Through the first forming cavity between the lower module and the upper module and the second forming cavity between the lower module and the side module as well as between the upper module and the side module, the transverse edge and the vertical edge of the multilayer material body can be integrally pressed and formed, so that the processing efficiency is improved, the strength of the joint of the transverse edge and the vertical edge is high, and the forming effect of the multilayer composite material for aerospace is met; the buffer block is arranged in the lower die block, when the side die base extrudes and forms the vertical edge of the multi-layer material body along the sliding rail, the protruding part of the buffer block can be used for buffering, impact force is reduced, and pressing stability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of aviation material production, in particular to an aviation multi-layer material forming device. Background Technique

[0002] Aviation multi-layer materials are mainly formed by pressing pre-impregnated ribbons composed of pre-impregnated tows after laying. In the current technology, common aviation multi-layer material forming devices can only perform filament laying and forming on a plane or a plane with surface curvature changes. For aviation multi-layer materials with complex cross-sections, such as Figure 1 the aviation multi-layer material shown in the top view projection is curved and has a T-shaped cross-section structure. Generally, two sets of parts are made and then spliced. The processing efficiency is low and the strength at the splicing part is insufficient, which cannot guarantee the forming effect of composite materials for aerospace. Therefore, it is necessary to improve and optimize the forming device for aviation multi-layer materials with complex cross-sections. Content of the Utility Model

[0003] The purpose of the utility model is to solve the deficiencies existing in the prior art and propose an aviation multi-layer material forming device.

[0004] To achieve the above purpose, the utility model adopts the following technical scheme: an aviation multi-layer material forming device, including a bottom plate, an up-and-down driving device, a translation driving device, and a multi-layer material body. The top view projection of the bottom plate is rectangular. The multi-layer material body is formed by pressing multiple layers of pre-impregnated ribbons after laying. The cross-section of the multi-layer material body consists of a horizontal side and a vertical side arranged on one side of the horizontal side. The upper wall of the bottom plate is successively provided with a lower die base and an upper die base from bottom to top. The top view projections of the lower die base and the upper die base are both curved and the top view projections of the lower die base and the upper die base coincide. The upper wall of the bottom plate and inside the curved shape of the lower die base and the upper die base is slidably connected with a side die base through a sliding structure. The top view projection of the side die base is curved and the outside of the curved shape is adapted to the inside shape of the curved shape of the lower die base and the upper die base. The lower die base is composed of a second lower module, a first lower module distributed front and back, and a third lower module arranged at the right ends of the second lower module and the first lower module. The second lower module and the first lower module are connected through the third lower module. The upper die base is composed of a second upper module, a first upper module distributed front and back, and a third upper module arranged at the right ends of the second upper module and the first upper module. The second upper module and the first upper module are connected through the third upper module. The side die base is composed of a second side module, a first side module distributed front and back, and a third side module arranged at the right ends of the second side module and the first side module. The second side module and the first side module are connected through the third side module. An installation groove is provided on the lower wall of the third lower module, and a buffer structure for reducing the impact force when the side die base is closed is arranged inside the installation groove. A lifting structure for convenient lifting is arranged on the upper wall of the bottom plate.

[0005] As a further description of the above technical solution:

[0006] The second lower module, the first lower module, the second upper module, the first upper module, the second side module, and the first side module are all straight long strips, and the top-down projections of the third lower module, the third upper module, and the third side module are all arc-shaped.

[0007] As a further description of the above technical solution:

[0008] A first forming cavity for forming the horizontal side of the material body is formed between the opposite sides of the lower die base and the upper die base, and a second forming cavity for forming the vertical side of the material body is formed between the opposite sides of the lower die base and the side die base and between the opposite sides of the upper die base and the side die base.

[0009] As a further description of the above technical solution:

[0010] The buffer structure is a buffer block, the buffer block is fixedly connected to the inner side wall of the installation groove, and the top-down projection of the buffer block is bent, and the inner bending radius of the bent shape is smaller than the inner bending radius of the bent shape in the top-down projection of the third side module.

[0011] As a further description of the above technical solution:

[0012] The sliding structure includes a sliding groove and a sliding rail. The sliding rail is fixedly connected to the upper wall of the bottom plate and is located between the first lower module and the second lower module. The center line of the length direction of the sliding rail coincides with the center line of the included angle between the first lower module and the second lower module in the top-down projection. The sliding groove is arranged on the lower wall of the third side module of the side die base. The inner side wall of the sliding groove is slidably connected to the sliding rail. The center line of the length direction of the sliding groove coincides with the center line of the included angle between the first side module and the second side module in the top-down projection.

[0013] As a further description of the above technical solution:

[0014] The hoisting structure includes four groups of lifting rings, and the four groups of lifting rings are all threadedly connected to the upper wall of the bottom plate and are respectively close to the four corners of the upper wall of the bottom plate.

[0015] The utility model has the following beneficial effects:

[0016] 1. Compared with the prior art, this aviation multi-layer material forming device can integrally press and form the horizontal side and the vertical side of the multi-layer material body through the first forming cavity between the lower module and the upper module and the second forming cavity between the lower module, the upper module and the side module, improving the processing efficiency, and the strength at the connection of the horizontal side and the vertical side is high, meeting the forming effect of the multi-layer composite material for aerospace.

[0017] 2. Compared with the prior art, the aviation multi-layer material forming device has a buffer block in the lower module. When the side mold seat extrude the vertical edge of the multi-layer material body along the slide rail, the protruding part of the buffer block can be used for buffering, thereby reducing the impact force and improving the pressing stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the multi-layer material body structure of an aviation multi-layer material forming device proposed by the utility model;

[0019] Figure 2 This is a schematic diagram of the overall structure of an aviation multi-layer material forming device proposed by the utility model from the right front view;

[0020] Figure 3 This is a schematic diagram of the overall structure of an aviation multi-layer material forming device from a left front perspective proposed by the utility model;

[0021] Figure 4 This is a schematic diagram of the upward structure of the lower die base of an aviation multi-layer material forming device proposed by the utility model;

[0022] Figure 5 This is a schematic diagram of the top structure of an upper die base of an aviation multi-layer material forming device proposed by the utility model;

[0023] Figure 6 The utility model is a schematic diagram of the upward structure of a side mold base of an aviation multi-layer material forming device.

[0024] Legend:

[0025] 1. Base plate; 2. Lifting ring; 3. Lower mold base; 4. Upper mold base; 5. Side mold base; 6. Buffer block; 7. Slide groove; 8. Slide rail; 9. Mounting groove; 10. Horizontal edge; 11. Vertical edge; 301. First lower module; 302. Second lower module; 303. Third lower module; 401. First upper module; 402. Second upper module; 403. Third upper module; 501. First side module; 502. Second side module; 503. Third side module. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] Reference Figures 1 to 6, an aviation multi-layer material forming device provided by the utility model: includes a bottom plate 1, an up-and-down driving device, a translation driving device, and a multi-layer material body. The top view projection of the bottom plate 1 is rectangular. The up-and-down driving device and the translation driving device are common technologies in the market, mainly used to drive the upper die base 4 to move up and down and the side die base 5 to move parallel to the upper surface of the bottom plate 1, so as to achieve the pressing effect;

[0028] As Figure 1 shown, the multi-layer material body is formed by laminating and pressing multiple layers of prepreg ribbons. The cross-section of the multi-layer material body consists of a horizontal side 10 and a vertical side 11 provided on one side of the horizontal side 10;

[0029] As Figure 2 , Figure 3 shown, in order to realize the integral pressing of the multi-layer material body, a lower die base 3 and an upper die base 4 are sequentially arranged from bottom to top on the upper wall of the bottom plate 1. The top view projections of the lower die base 3 and the upper die base 4 are both curved and the top view projections of the lower die base 3 and the upper die base 4 coincide. A side die base 5 is slidably connected to the upper wall of the bottom plate 1 and inside the curved shapes of the lower die base 3 and the upper die base 4 through a sliding structure. The top view projection of the side die base 5 is curved and the outer part of the curved shape is adapted to the inner shape of the curved shapes of the lower die base 3 and the upper die base 4. A first forming die cavity for forming the horizontal side 10 of the material body is formed between the opposite sides of the lower die base 3 and the upper die base 4. A second forming die cavity for forming the vertical side 11 of the material body is formed between the opposite sides of the lower die base 3 and the side die base 5 and between the opposite sides of the upper die base 4 and the side die base 5. The prepreg ribbons are first laid in the first forming die cavity. When placing, the side of the prepreg ribbon facing the side die base 5 extends outward. After the placement is completed, first drive the upper die base 4 to move downward and close towards the lower die base 3 through the up-and-down driving device, then divide the exposed part of the prepreg ribbon into two equal parts and fold them up and down respectively, and stick them to the sides of the lower die base 3 and the upper die base 4 facing the side die base 5 respectively. Then, continue to lay new prepreg ribbons on the side of the prepreg ribbon facing the side die base 5 after folding. After the laying is completed, drive the side die base 5 to press against the lower die base 3 and the upper die base 4 and close through the translation driving device, and continuously maintain the extrusion pressure of the up-and-down driving device and the translation driving device until the pressing is completed. After the side die base 5, the upper die base 4 and the lower die base 3 are separated, the pressed multi-layer material body is obtained;

[0030] As Figure 3 , Figure 6As shown in the figure, in order to restrict the die closing movement direction of the side die base 5, the sliding structure includes a chute 7 and a slide rail 8. The slide rail 8 is fixedly connected to the upper wall of the bottom plate 1 and is located between the first lower die block 301 and the second lower die block 302. The center line of the length direction of the slide rail 8 coincides with the center line of the included angle between the first lower die block 301 and the second lower die block 302 in the top view projection. The chute 7 is arranged on the lower wall of the third side die block 503 of the side die base 5. The inner side wall of the chute 7 is slidably connected to the slide rail 8. The center line of the length direction of the chute 7 coincides with the center line of the included angle between the first side die block 501 and the second side die block 502 in the top view projection. By the cooperation of the chute 7 and the slide rail 8, the die closing movement direction of the side die base 5 can be restricted, and the die closing accuracy can be improved;

[0031] As Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown in the figure, in order to facilitate processing and assembly, the lower die base 3 is composed of the second lower die block 302 and the first lower die block 301 which are distributed front and back, and the third lower die block 303 arranged at the right ends of the second lower die block 302 and the first lower die block 301. The second lower die block 302 and the first lower die block 301 are connected by the third lower die block 303. The upper die base 4 is composed of the second upper die block 402 and the first upper die block 401 which are distributed front and back, and the third upper die block 403 arranged at the right ends of the second upper die block 402 and the first upper die block 401. The second upper die block 402 and the first upper die block 401 are connected by the third upper die block 403. The side die base 5 is composed of the second side die block 502 and the first side die block 501 which are distributed front and back, and the third side die block 503 arranged at the right ends of the second side die block 502 and the first side die block 501. The second side die block 502 and the first side die block 501 are connected by the third side die block 503. The second lower die block 302, the first lower die block 301, the second upper die block 402, the first upper die block 401, the second side die block 502 and the first side die block 501 are all straight long strips. The top view projections of the third lower die block 303, the third upper die block 403 and the third side die block 503 are all arc-shaped. For the convenience of processing and assembly, the lower die base 3, the upper die base 4 and the side die base 5 are processed in a segmented form and then assembled and fixed into a whole, which reduces the processing difficulty;

[0032] As Figure 2 , Figure 4As shown in the figure, in order to improve the pressing stability, an installation groove 9 is provided on the lower wall of the third lower module 303. A buffer structure for reducing the impact force when the side die holder 5 is closed is provided inside the installation groove 9. The buffer structure is a buffer block 6. The buffer block 6 is fixedly connected to the inner side wall of the installation groove 9. The buffer block 6 is bent in a top view projection, and the inner bending radius of the bent shape is smaller than the inner bending radius of the bent shape in the top view projection of the third side module 503. When the side die holder 5 is closed, it first contacts the prepreg ribbon, and then contacts the protruding buffer block 6. The buffer is carried out through the buffer block 6 to avoid the impact when the side die holder 5 is closed with the upper die holder 4 and the lower die holder 3, thereby improving the pressing stability;

[0033] As Figure 1 , Figure 2 shown in the figure, in order to facilitate the installation and transfer of the bottom plate 1, a lifting structure for facilitating lifting is provided on the upper wall of the bottom plate 1. The lifting structure includes four groups of lifting rings 2. The four groups of lifting rings 2 are all threadedly connected to the upper wall of the bottom plate 1 and are respectively close to the four corners of the upper wall of the bottom plate 1. With the cooperation of the four groups of lifting rings 2 and common lifting equipment on the market, it is relatively easy to lift, transfer and install the bottom plate 1.

[0034] Working principle: With the cooperation of the four groups of lifting rings 2 and common lifting equipment on the market, it is relatively easy to lift, transfer and install the bottom plate 1. The prepreg ribbon is first laid in the first forming cavity. When placing, the side of the prepreg ribbon facing the side die holder 5 extends outwards. After the placement is completed, first drive the upper die holder 4 to move downward and close towards the lower die holder 3 through the up and down driving device. Then divide the exposed part of the prepreg ribbon into two parts and turn them up and down respectively, and stick them to the sides of the lower die holder 3 and the upper die holder 4 facing the side die holder 5 respectively. Then continue to lay a new prepreg ribbon on the side of the prepreg ribbon facing the side die holder 5 after folding. After the laying is completed, drive the side die holder 5 to press against the lower die holder 3 and the upper die holder 4 and close through the translation driving device, and continuously maintain the extrusion force of the up and down driving device and the translation driving device until the pressing is completed. After the side die holder 5, the upper die holder 4 and the lower die holder 3 are separated, the pressed multi-layer material body is obtained. When the side die holder 5 is closed, it first contacts the prepreg ribbon, and then contacts the protruding buffer block 6. The buffer is carried out through the buffer block 6 to avoid the impact when the side die holder 5 is closed with the upper die holder 4 and the lower die holder 3, thereby improving the pressing stability. Through the cooperation of the sliding groove 7 and the sliding rail 8, the closing movement direction of the side die holder 5 can be restricted, and the closing accuracy can be improved.

[0035] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An aviation multi-layer material forming device, characterized in that: It includes a bottom plate (1), an up-and-down driving device, a translation driving device, and a multi-layer material body. The top view projection of the bottom plate (1) is rectangular. The multi-layer material body is formed by laminating and pressing multiple layers of prepreg ribbons. The cross-section of the multi-layer material body consists of a horizontal side (10) and a vertical side (11) arranged on one side of the horizontal side (10). On the upper wall of the bottom plate (1), a lower die base (3) and an upper die base (4) are successively arranged from bottom to top. The top view projections of the lower die base (3) and the upper die base (4) are both curved, and the top view projections of the lower die base (3) and the upper die base (4) coincide. A side die base (5) is slidably connected to the upper wall of the bottom plate (1) and inside the curved shape of the lower die base (3) and the upper die base (4) through a sliding structure. The top view projection of the side die base (5) is curved, and the outer part of the curved shape is adapted to the inner shape of the curved shapes of the lower die base (3) and the upper die base (4). The lower die base (3) is composed of a second lower die block (302), a first lower die block (301) distributed front and back, and a third lower die block (303) arranged at the right end of the second lower die block (302) and the first lower die block (301). The second lower die block (302) and the first lower die block (301) are connected by the third lower die block (303). The upper die base (4) is composed of a second upper die block (402), a first upper die block (401) distributed front and back, and a third upper die block (403) arranged at the right end of the second upper die block (402) and the first upper die block (401). The second upper die block (402) and the first upper die block (401) are connected by the third upper die block (403). The side die base (5) is composed of a second side die block (502), a first side die block (501) distributed front and back, and a third side die block (503) arranged at the right end of the second side die block (502) and the first side die block (501). The second side die block (502) and the first side die block (501) are connected by the third side die block (503). A mounting groove (9) is arranged on the lower wall of the third lower die block (303), and a buffer structure for reducing the impact force when the side die base (5) is closed is arranged inside the mounting groove (9). A hoisting structure for facilitating hoisting is arranged on the upper wall of the bottom plate (1).

2. The aviation multi-layer material forming device according to claim 1, characterized in that: The second lower die block (302), the first lower die block (301), the second upper die block (402), the first upper die block (401), the second side die block (502), and the first side die block (501) are all straight long strips, and the top view projections of the third lower die block (303), the third upper die block (403), and the third side die block (503) are all arc-shaped.

3. The aviation multi-layer material forming device according to claim 2, characterized in that: A first forming die cavity for forming the horizontal side (10) of the material body is formed between the opposite sides of the lower die base (3) and the upper die base (4), and a second forming die cavity for forming the vertical side (11) of the material body is formed between the opposite sides of the lower die base (3) and the side die base (5) and between the opposite sides of the upper die base (4) and the side die base (5).

4. An aviation multi-layer material forming device according to claim 3, characterized in that: The buffer structure is a buffer block (6), and the buffer block (6) is fixedly connected to the inner side wall of the installation groove (9). When viewed from above, the buffer block (6) is curved, and the inner bending radius of the curved shape is smaller than the inner bending radius of the curved shape of the third side module (503) when viewed from above.

5. An aviation multi-layer material forming device according to claim 4, characterized in that: The sliding structure includes a chute (7) and a slide rail (8). The slide rail (8) is fixedly connected to the upper wall of the bottom plate (1) and is located between the first lower module (301) and the second lower module (302). The center line of the length direction of the slide rail (8) coincides with the center line of the included angle between the first lower module (301) and the second lower module (302) when viewed from above. The chute (7) is arranged on the lower wall of the third side module (503) of the side mold base (5). The inner side wall of the chute (7) is slidably connected to the slide rail (8). The center line of the length direction of the chute (7) coincides with the center line of the included angle between the first side module (501) and the second side module (502) when viewed from above.

6. The aviation multi-layer material forming device according to claim 5, characterized in that: The hoisting structure includes four groups of lifting rings (2), and the four groups of lifting rings (2) are all threadedly connected to the upper wall of the bottom plate (1) and are respectively close to the four corners of the upper wall of the bottom plate (1).

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