Aviation composite material forming device

Abstract

The utility model discloses an aviation composite material forming device which comprises a base and a material ejecting device, and the lower wall of the base is fixedly connected with three groups of foot pads which are distributed left and right. According to the utility model, after a composite material is pressed and formed, the upper die holder moves upwards to be separated, a product is left on the lower die holder, the ejector rod is pushed by the ejector device to drive the inserts to move upwards, the product is separated from the first lower die cavity surface through the upward movement of the two groups of inserts, and at the moment, the product is only contacted with the inserts, so that the product is convenient to take down; the insert is guided through the sliding block and the sliding groove when moving upwards, the insert can be driven to reset through the spring elastic pin after material ejection is completed, and accurate positioning is conducted through the positioning block and the positioning groove during resetting.

Description

Technical Field

[0001] The utility model relates to the technical field of aviation composite material processing, in particular to an aviation composite material forming device. Background Art

[0002] Aviation composite materials are mainly formed by laying down prepreg ribbons composed of prepreg tows and then pressing them after multiple layers are stacked. When pressing materials with curved surfaces, the finished product is usually stuck on the punch surface and needs to be peeled off manually, which is time-consuming and laborious and easily causes damage. There are also technologies that propose to use ejector rods to eject products. The product has greater adhesion and the contact area between the end of the ejector rod and the product is smaller, so the product can be easily damaged. Therefore, it is necessary to provide an aviation composite material molding device that can facilitate material removal. Utility Model Content

[0003] The utility model aims to solve the shortcomings in the prior art and proposes an aviation composite material molding device.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an aviation composite material forming device, comprising a base and a ejection device, the lower wall of the base is fixedly connected with three groups of pads distributed on the left and right, the pads are rectangular square tubes, the upper wall of the base is provided with a lower mold seat and an upper mold seat in sequence from bottom to top, the upper mold seat is provided with a concave mold surface for forming on the side facing the lower mold seat, the left and right sides of the lower mold seat are fixedly connected with a first connecting seat, the upper wall of the first connecting seat is provided with an insert, the front and rear sides of the insert are provided with a second connecting seat, the lower wall of the second connecting seat is provided with an ejection structure for facilitating the ejection device to drive the insert to move upward to eject the material, a reset structure for driving the insert to reset after the ejection device retreats is also provided between the second connecting seat and the pads, a guide structure for guiding the insert left and right when it moves upward is provided between the insert and the lower mold seat, and a guide structure for correcting the position of the insert when it is reset is provided between the insert and the first connecting seat.

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

[0006] The upper wall of the lower die seat is provided with a first lower die cavity surface, and the upper wall of the insert is provided with a second lower die cavity surface, and the second lower die cavity surface and the first lower die cavity surface are combined to match the concave die surface.

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

[0008] The ejection structure is an ejection rod, which is fixedly connected to the lower wall of the second connecting seat. One end of the ejection rod away from the second connecting seat passes through the first connecting seat, the base and the upper wall of the pad foot in sequence and extends to the inside of the pad foot.

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

[0010] The reset structure includes a pull rod, a limit block and a spring. The pull rod is fixedly connected to the lower wall of the second connecting seat and is located on one side of the ejector structure. The end of the pull rod away from the second connecting seat sequentially penetrates through the upper walls of the first connecting seat, the base and the cushion foot and extends into the interior of the cushion foot. The limit block is fixedly connected to the end of the pull rod extending into the interior of the cushion foot. The spring is sleeved on the outer wall of the pull rod and is located between the limit block and the inner upper wall of the cushion foot.

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

[0012] The guiding structure includes a slider and a sliding groove. The slider and the sliding groove are respectively arranged between the opposite sides of the lower die base and the insert block. The slider is slidably connected to the inner side wall of the sliding groove. The insert block is slidably connected to the lower die base through the sliding groove and the slider.

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

[0014] The guiding and positioning structure includes a positioning block and a positioning groove. The positioning block is arranged on the upper wall of the first connecting seat. The positioning block is in the shape of a square frustum. The positioning groove is arranged on the lower wall of the insert block and the shape of the inner side wall of the positioning groove matches the outer shape of the positioning block.

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

[0016] Compared with the prior art, in this aviation composite material forming device, after the composite material is pressed and formed, the upper die base moves upward and separates, and the product remains on the lower die base. The ejector device is used to push the ejector rod to drive the insert block to move upward. The product is separated from the first lower die cavity surface by the upward movement of the two groups of insert blocks. At this time, the product only contacts the insert block, so that the product can be conveniently removed. The contact area between the insert block and the product is larger than that of the traditional ejector rod, and it is not easy to cause damage to the product. When the insert block moves upward, it is guided by the slider and the sliding groove. After the ejecting is completed, the insert block can be driven to reset by the spring ejector pin. When resetting, precise positioning is carried out through the positioning block and the positioning groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall structure of an aviation composite material forming device proposed by the utility model;

[0018] Figure 2 is a schematic diagram of the structure of the lower die base of an aviation composite material forming device proposed by the utility model;

[0019] Figure 3 is a schematic diagram of the structure of the insert block of an aviation composite material forming device proposed by the utility model;

[0020] Figure 4Schematic cross-sectional view of the internal structure of the insert of an aviation composite material forming device proposed by the present utility model;

[0021] Figure 5 Partial side cross-sectional view of the connection structure of the insert, the first connecting seat, the base, the pull rod and the ejector rod of an aviation composite material forming device proposed by the present utility model.

[0022] Legend:

[0023] 1. Foot pad; 2. Base; 3. Lower die base; 4. First connecting seat; 5. Insert; 6. Second connecting seat; 7. Upper die base; 8. First lower die cavity surface; 9. Slide block; 10. Positioning block; 11. Second lower die cavity surface; 12. Chute; 13. Positioning groove; 14. Ejector rod; 15. Pull rod; 16. Limit block; 17. Spring. Specific implementation mode

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present utility model.

[0025] Refer to Figures 1 to 5 , an aviation composite material forming device provided by the present utility model: including a base 2 and an ejector device. Three groups of foot pads 1 distributed left and right are fixedly connected to the lower wall of the base 2. The foot pads 1 are rectangular square tubes. A lower die base 3 and an upper die base 7 are sequentially arranged on the upper wall of the base 2 from bottom to top. An inner die surface for forming is arranged on the side of the upper die base 7 facing the lower die base 3. First connecting seats 4 are fixedly connected to both the left and right sides of the lower die base 3. An insert 5 is arranged on the upper wall of the first connecting seat 4. A first lower die cavity surface 8 is arranged on the upper wall of the lower die base 3. A second lower die cavity surface 11 is arranged on the upper wall of the insert 5. After the second lower die cavity surface 11 and the first lower die cavity surface 8 are combined, they are adapted to the inner die surface. The product is formed by pressing through the inner die surface, the second lower die cavity surface 11 and the first lower die cavity surface 8. After being formed by pressing, the product remains above the lower die base 3;

[0026] As Figure 1 、 Figure 5As shown, in order to facilitate the pusher of the ejector device to move the insert block 5 upward, second connecting seats 6 are arranged on both the front and rear sides of the insert block 5. An ejector structure for facilitating the ejector device to drive the insert block 5 to move upward to eject the material is arranged on the lower wall of the second connecting seat 6. The ejector structure is an ejector rod 14. The ejector rod 14 is fixedly connected to the lower wall of the second connecting seat 6. One end of the ejector rod 14 away from the second connecting seat 6 sequentially penetrates through the upper wall of the first connecting seat 4, the base 2, and the foot pad 1 and extends into the interior of the foot pad 1. After the product is pressed, the ejector device pushes the ejector rod 14, drives the insert block 5 to move upward through the ejector rod 14, and then drives the product to separate from the first lower die cavity surface 8 through the insert block 5, greatly reducing the attachment surface of the product, thus facilitating the removal of the product;

[0027] As Figure 1 , Figure 5 shown, in order for the insert block 5 to be reset after ejection, a reset structure for driving the insert block 5 to reset after the ejector device retracts is also arranged between the second connecting seat 6 and the foot pad 1. The reset structure includes a pull rod 15, a limit block 16, and a spring 17. The pull rod 15 is fixedly connected to the lower wall of the second connecting seat 6 and is located on one side of the ejector structure. One end of the pull rod 15 away from the second connecting seat 6 sequentially penetrates through the upper wall of the first connecting seat 4, the base 2, and the foot pad 1 and extends into the interior of the foot pad 1. The limit block 16 is fixedly connected to one end of the pull rod 15 extending into the interior of the foot pad 1. The spring 17 is sleeved on the outer wall of the pull rod 15 and is located between the limit block 16 and the inner upper wall of the foot pad 1. After the ejection is completed, the ejector device retracts, and the elasticity of the spring 17 drives the pull rod 15 to move downward, thereby driving the insert block 5 to reset;

[0028] As Figure 1 , Figure 2 , Figure 3 and Figure 4 shown, in order for the insert block 5 not to displace in the front - rear direction during ejection, a guiding structure for guiding the left - right movement of the insert block 5 when it moves upward is arranged between the insert block 5 and the lower die base 3. The guiding structure includes a slider 9 and a sliding groove 12. The slider 9 and the sliding groove 12 are respectively arranged between the opposite sides of the lower die base 3 and the insert block 5. The slider 9 is slidably connected to the inner side wall of the sliding groove 12. The insert block 5 is slidably connected to the lower die base 3 through the sliding groove 12 and the slider 9. Through the cooperation of the sliding groove 12 and the slider 9, the insert block 5 and the lower die base 3 do not displace in the front - rear direction;

[0029] As Figure 1 , Figure 2 , Figure 3 and Figure 4As shown in the figure, in order to enable more accurate positioning when the insert block 5 is reset, a guiding structure for guiding the position of the insert block 5 during reset is provided between the insert block 5 and the first connecting seat 4. The guiding structure includes a positioning block 10 and a positioning groove 13. The positioning block 10 is arranged on the upper wall of the first connecting seat 4. The positioning block 10 is in the shape of a square frustum. The positioning groove 13 is arranged on the lower wall of the insert block 5 and the shape of the inner side wall of the positioning groove 13 matches the outer shape of the positioning block 10. When the insert block 5 is driven by the spring 17 to reset, accurate positioning is carried out through the cooperation of the positioning block 10 and the positioning groove 13.

[0030] Working principle: The product is formed by pressing through the female die surface and the second lower mold cavity surface 11 and the first lower mold cavity surface 8. After pressing and forming, the product remains above the lower mold base 3. After the product pressing is completed, the ejector device pushes the ejector rod 14, drives the insert block 5 to move upward through the ejector rod 14, and then drives the product to separate from the first lower mold cavity surface 8 through the insert block 5, greatly reducing the attachment surface of the product, thus facilitating the removal of the product. Through the cooperation of the sliding groove 12 and the slider 9, no front-back displacement occurs between the insert block 5 and the lower mold base 3. After the ejecting is completed, the ejector device retracts, and the elasticity of the spring 17 drives the pull rod 15 to move downward, and then drives the insert block 5 to reset. When the insert block 5 is driven by the spring 17 to reset, accurate positioning is carried out through the cooperation of the positioning block 10 and the positioning groove 13.

[0031] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they 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 invention shall be included in the protection scope of the present invention.

Claims

1. An aviation composite material forming device, characterized in that: The invention comprises a base (2) and a material ejecting device. The lower wall of the base (2) is fixedly connected with three groups of pads (1) distributed on the left and right. The pads (1) are rectangular square tubes. The upper wall of the base (2) is provided with a lower die seat (3) and an upper die seat (7) in sequence from bottom to top. The upper die seat (7) is provided with a concave die surface for molding on the side facing the lower die seat (3). The left and right sides of the lower die seat (3) are fixedly connected with a first connecting seat (4). The upper wall of the first connecting seat (4) is provided with an insert (5). The insert (5) is provided with a second connecting seat (4) on both the front and rear sides. A second connecting seat (6), the lower wall of the second connecting seat (6) is provided with a pushing structure for facilitating the pushing device to drive the insert (5) to move upward to eject the material, a resetting structure is also provided between the second connecting seat (6) and the pad (1) for driving the insert (5) to return to its original position after the pushing device retreats, a guiding structure is provided between the insert (5) and the lower die seat (3) for guiding the insert (5) to the left and right when it moves upward, and a guiding structure is provided between the insert (5) and the first connecting seat (4) for guiding the position of the insert (5) when it is reset.

2. The aviation composite material forming device according to claim 1, characterized in that: The upper wall of the lower die seat (3) is provided with a first lower die cavity surface (8), and the upper wall of the insert (5) is provided with a second lower die cavity surface (11); the second lower die cavity surface (11) and the first lower die cavity surface (8) are combined to match the concave die surface.

3. The aviation composite material forming device according to claim 2, characterized in that: The lifting structure is a lifting rod (14), and the lifting rod (14) is fixedly connected to the lower wall of the second connecting seat (6). The end of the lifting rod (14) away from the second connecting seat (6) passes through the first connecting seat (4), the base (2) and the upper wall of the pad foot (1) in sequence and extends to the inside of the pad foot (1).

4. The aviation composite material forming device according to claim 3, characterized in that: The reset structure comprises a pull rod (15), a limit block (16) and a spring (17); the pull rod (15) is fixedly connected to the lower wall of the second connecting seat (6) and is located on one side of the top material structure; the end of the pull rod (15) away from the second connecting seat (6) passes through the first connecting seat (4), the base (2) and the upper wall of the pad foot (1) in sequence and extends to the inside of the pad foot (1); the limit block (16) is fixedly connected to the end of the pull rod (15) extending into the inside of the pad foot (1); the spring (17) is sleeved on the outer wall of the pull rod (15) and is located between the limit block (16) and the inner upper wall of the pad foot (1).

5. The aviation composite material forming device according to claim 4, characterized in that: The guide structure comprises a slider (9) and a slide groove (12), wherein the slider (9) and the slide groove (12) are respectively arranged between the lower die base (3) and the opposite side of the insert (5), the slider (9) is slidably connected to the inner side wall of the slide groove (12), and the insert (5) is slidably connected to the lower die base (3) via the slide groove (12) and the slider (9).

6. The aviation composite material forming device according to claim 5, characterized in that: The guiding structure comprises a positioning block (10) and a positioning groove (13); the positioning block (10) is arranged on the upper wall of the first connecting seat (4); the positioning block (10) is in the shape of a square frustum; the positioning groove (13) is arranged on the lower wall of the insert (5); and the shape of the inner side wall of the positioning groove (13) matches the outer shape of the positioning block (10).

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