A demoulding device for composite material manufacturing and a method of using the same

Abstract

A demoulding device for composite material manufacturing and a method of using the same belong to the field of composite material preparation demoulding. It includes a support rod, a top plate, a bottom plate, a pressing device, an air pump and a fixing device; the upper end of the bottom plate is fixedly connected to the support rod, and the upper end of the support rod is fixedly connected to the top plate; the pressing device is fixedly connected to the lower end of the top plate; the fixing device is fixedly connected to the upper end of the bottom plate; and the air pump is fixedly connected to the side of the fixing device. The present invention forms an air pressure difference between the upper and lower parts of the composite material to separate the composite material from the outer frame and the lower template, thereby avoiding the deformation of the composite material caused by setting the hanging point. At the same time, when the upper template and the connecting block are separated from the sealed shell, the composite material is also separated from the lower template, thereby reducing the time consumed in setting the hanging point and improving work efficiency.

Description

Technical Field

[0001] The invention relates to a demoulding device for composite material manufacturing and a use method thereof, belonging to the field of composite material preparation demoulding. Background Art

[0002] With the development of composite material technology, composite materials are widely used in aviation, aerospace and other fields. Due to the special needs of some fields, the thickness of parts made of composite materials is relatively small. When demolding, lifting points are set on the inner surface of the composite material parts, and the composite material is separated from the molding mold by a lifting device; demolding by this lifting method may cause deformation of the composite material due to inaccurate setting of the lifting points, affecting the quality of the finished product and causing material waste. Summary of the invention

[0003] The purpose of the present invention is to solve the above problems existing in the background technology and to provide a demoulding device for composite material manufacturing and a method of using the same.

[0004] The present invention achieves the above-mentioned purpose by adopting the following technical solutions:

[0005] A demoulding device for composite material manufacturing comprises a support rod, a top plate, a bottom plate, a pressing device, an air pump and a fixing device; the upper end of the bottom plate is fixedly connected to the support rod, and the upper end of the support rod is fixedly connected to the top plate; the pressing device is fixedly connected to the lower end of the top plate; the fixing device is fixedly connected to the upper end of the bottom plate; and the air pump is fixedly connected to the side of the fixing device.

[0006] A method for using a demoulding device for composite material manufacturing, the method comprising the following steps:

[0007] Step 1: Place the composite material on the upper end of the lower template inside the outer frame;

[0008] Step 2: Start the hydraulic cylinder to move the upper template to the upper end of the composite material to form it;

[0009] Step 3: Start the hydraulic cylinder in reverse to separate the upper template from the outer frame;

[0010] Step 4: Start the air pump to form an air pressure difference between the upper and lower ends of the composite material, so that the composite material is separated from the outer frame and the lower template.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention forms an air pressure difference between the upper and lower parts of the composite material, so that the composite material is separated from the outer frame and the lower template, thereby avoiding the deformation of the composite material caused by setting the hanging points. At the same time, when the upper template and the connecting block are separated from the sealed shell, the composite material is also separated from the lower template, thereby reducing the time spent on setting the hanging points and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a front view of a demoulding device for composite material manufacturing of the present invention;

[0013] Figure 2 It is a front view of a pressing device of a demoulding device for composite material manufacturing of the present invention;

[0014] Figure 3 It is a front view of a fixing device of a demoulding device for composite material manufacturing of the present invention;

[0015] Figure 4 It is a front view of a sealing device of a demoulding device for composite material manufacturing of the present invention;

[0016] Figure 5 is a top view of a sealing device of a demoulding device for composite material manufacturing of the present invention;

[0017] Figure 6 It is a front view of a movable device of a demoulding device for composite material manufacturing of the present invention;

[0018] Figure 7 It is a schematic diagram of the state of an elastic membrane of a movable device of a demoulding device for composite material manufacturing of the present invention;

[0019] Figure 8 It is a schematic structural diagram of a molding state of a demoulding device for composite material manufacturing of the present invention;

[0020] Fig. 9 It is a structural schematic diagram of the upper pulling state I of a demoulding device for composite material manufacturing of the present invention;

[0021] Fig.10 It is a structural schematic diagram of the upper pulling state II of a demoulding device for composite material manufacturing of the present invention. DETAILED DESCRIPTION

[0022] The technical solution of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0023] Specific implementation method 1: Figure 1-10As shown, this embodiment records a demoulding device for composite material manufacturing, including a support rod 1, a top plate 2, a bottom plate 3, a pressing device 4, an air pump 5 and a fixing device 6; the upper end of the bottom plate 3 is fixedly connected to the support rod 1, and the upper end of the support rod 1 is fixedly connected to the top plate 2; the pressing device 4 is fixedly connected to the lower end of the top plate 2; the fixing device 6 is fixedly connected to the upper end of the bottom plate 3; the air pump 5 is fixedly connected to the side of the fixing device 6.

[0024] The fixing device 6 includes a sealing device 61 and a movable device 62 ; the sealing device 61 is fixedly connected to the upper end of the bottom plate 3 ; and the movable device 62 is fixedly connected inside the sealing device 61 .

[0025] The sealing device 61 includes a sealing shell 611; a groove is provided at the top of the sealing shell 611, a vertical slide 612 is provided on the side wall of the groove on the sealing shell 611, and a through hole 613 is provided in the middle and bottom of the side of the sealing shell 611, and the side of each through hole 613 is fixedly connected to an air pump 5; a slide groove Ⅰ 614 is provided on the inner wall of the slide 612, and the slide groove Ⅰ 614 is located between the two through holes 613, and a slider 616 that slidably cooperates with the slide groove Ⅰ 614 is provided in the slide groove Ⅰ 614, and a spring 615 is fixedly connected between the slider 616 and the inner wall of the slide groove Ⅰ 614.

[0026] The side surface of the slider 616 is configured as an inclined surface.

[0027] The movable device 62 includes a fixed cylinder 621, a limit block 623, a connecting rod 624, a lower template 625, an elastic membrane 626 and an outer frame 627; the fixed cylinder 621 is fixedly connected to the inner bottom surface of the sealed shell 611, the top of the fixed cylinder 621 is hollowed out, and a slide groove II 622 is provided on the inner wall of the fixed cylinder 621; the lower end of the connecting rod 624 is slidably matched with the fixed cylinder 621, and the bottom of the side of the connecting rod 624 is fixedly connected with a slide groove II 622. The upper end of the connecting rod 624 is fixedly connected to the matching limit block 623 with the lower template 625; the outer frame 627 is fixedly connected to the inner wall of the sealing shell 611, and the lower template 625 is slidably matched with the outer frame 627; the upper end of the outer frame 627 is fixedly connected to the elastic membrane 626, and the outer frame 627 is also provided with an L-shaped connecting hole 628, the vertical end of the connecting hole 628 passes through the lower end of the outer frame 627, and the horizontal end of the connecting hole 628 passes through the inner wall of the outer frame 627.

[0028] The pressing device 4 includes a hydraulic cylinder 41, a connecting block 42, a sliding block 44, an insert rod 45 and an upper template 48; the cylinder body of the hydraulic cylinder 41 is fixedly connected to the lower end of the top plate 2, and the cylinder rod is fixedly connected to the connecting block 42; the lower end of the connecting block 42 is fixedly connected to the lower template 48, the side of the connecting block 42 is provided with a slide groove III 43, the side of the insert rod 45 is fixedly connected to the connecting block 42 that slides with the slide groove III 43, and the insert rod 45 is also provided with a transverse vent hole 46, and a slot 47 is provided on the outer side of the insert rod 45; the connecting block 42 slides with the groove on the sealing shell 611, and a sealing gasket is provided at the connection; the insert rod 47 is interference fit with the slideway 612; the upper template 48 slides with the outer frame 627; the slider 616 slides with the slot 47.

[0029] When the upper template 48 is located inside the outer frame 627 , the insertion rod 45 is located in the slideway 612 , and the vent hole 46 is connected to the through hole 613 located in the middle of the sealed shell 611 , and the slider 646 is located in the slot 47 .

[0030] When the lengths of the fixing tube 621 and the connecting rod 624 are at their longest, the lower template 625 is still located in the outer frame 627 , and at this time, the upper end of the lower template 625 is still connected to the horizontal end of the connecting hole 628 .

[0031] The elastic membrane 626 is closely attached to the inner wall of the outer frame 627 and the upper end surface of the lower mold plate 625 .

[0032] A method for using a demoulding device for composite material manufacturing, the method comprising the following steps:

[0033] Step 1: Place the composite material 7 on the upper end of the lower template 625 inside the outer frame 627;

[0034] Step 2: Start the hydraulic cylinder 41 to move the upper template 48 to the upper end of the composite material 7 to form it;

[0035] Step 3: Start the hydraulic cylinder 41 in reverse direction to separate the upper template 48 from the outer frame 627;

[0036] Step 4: Start the air pump 5 to form an air pressure difference between the upper and lower ends of the composite material 7, so that the composite material 7 is separated from the outer frame 627 and the lower template 625.

[0037] The working principle of the present invention is as follows: the composite material 7 is placed on the upper end of the lower template 625 inside the outer frame 627; the hydraulic cylinder 41 is then started, the hydraulic cylinder 41 drives the connecting block 42 to move downward, and then drives the upper template 48 to move downward, so that the upper template 48 moves to the upper end of the composite material 7 to form it, and in the process of the connecting block 42 moving downward, the plug rod 45 is driven to move downward, and when the plug rod 45 contacts the slide 612, the plug rod 45 stops moving, and the plug rod 45 moves upward relative to the connecting block 42 until the limit block 623 moves When the upper end of the slide groove III 43 is reached, the connection block 42 pushes the limit block 623 to move downward, thereby driving the insertion rod 45 to be inserted into the slideway 612 to seal the slideway 612. When the upper template 48 moves to the upper end of the composite material 7, the slider 616 is inserted into the slot 47, and the vent hole 46 is connected with the through hole 613 located in the middle of the sealing shell 611. Since the height of the through hole 613 located in the middle of the sealing shell 611 is higher than the height of the outer frame 627, the through hole 613 is blocked by the connection block 42, so the through hole 613 is not connected with the outer frame 627.

[0038] After molding, the hydraulic cylinder 41 is started in reverse to separate the upper template 48 from the outer frame 627; during the upward movement of the connecting block 42, due to the interference fit between the insertion rod 45 and the slide 612, the insertion rod 45 remains stationary during the upward movement of the connecting block 42, and while the connecting block 42 moves upward, the air pump 5 connected to the through hole 613 in the middle of the sealing shell 611 is started to draw air outward, so that the air pressure between the upper template 48 and the composite material 7 is reduced. At the same time, the air pump 5 connected to the through hole 613 at the bottom of the sealing shell 611 is connected to inflate the lower end of the lower template 625, so that the air pressure at the lower end of the lower template 625 is increased, thereby driving the lower template 625 to move upward, and the lower template 625 drives the connecting rod 624 to move upward together, and the lower template 625 pushes the elastic membrane 626 to move upward, and then the composite material 7 moves upward, so that the composite material 7 moves to the position as shown in the figure. Fig. 9In the state shown, when the connecting rod 624 moves to the highest point, the lower template 625 is located at the middle position of the horizontal end of the connecting hole 628, that is, the upper and lower ends of the lower template 625 are connected to the connecting hole 628, the connecting block 42 continues to move upward, the sliding block 44 moves to the lower end of the slide groove III 43, and then the connecting block 42 drives the sliding block 44 and the insertion rod 45 to move upward, so that the vent hole 46 is disconnected from the corresponding through hole 613, so that the air pressure between the upper template 48 and the elastic membrane 626 is constant and less than the outside As the connecting block 42 moves upward, the elastic membrane 626 drives the composite material 7 to move upward relative to the lower template 625 under the negative pressure. At the same time, the lower template 625 cannot move upward due to the restriction of the limit block 623 and the slide groove II 622. The air filled into the lower end of the lower template 625 is filled into the gap between the elastic membrane 626 and the lower template 625 through the vertical end and the horizontal end of the connecting hole 628, further driving the elastic membrane 626 to move upward. Since the elastic membrane 626 is fixedly connected to the outer frame 6 27, so as the elastic membrane 626 moves upward, the middle position of the elastic membrane 626 bulges upward, so that at least one side of the composite material 7 is lifted up and separated from the elastic membrane 626. The larger the upward bulging arc of the elastic membrane 626, the larger the area of ​​the composite material 7 separated from the elastic membrane 626. When the connecting block 42 is separated from the sealed housing 611, since the air pressure between the composite material 7 and the upper template 48 is less than the external air pressure, after the connecting block 42 is separated, the external air enters the sealed housing 611, forming an impact force, and part of the air moves downward along the inner wall of the sealed housing 611. After moving the upper end surface of the elastic membrane 626, it changes direction and impacts the connection between the elastic membrane 626 and the composite material 7, so that it is completely separated from the elastic membrane 626, thereby making it easier to take out the composite material 7; the negative pressure at the upper end of the composite material 7 acts evenly on the upper end of the composite material 7, and the high pressure at the lower end of the elastic membrane 626 also acts evenly on the lower end of the elastic membrane 626 at the same time, so that the composite material 7 is demoulded, and the composite material 7 is prevented from being deformed by the hanging point;

[0039] After use, the air pump 5 connected to the through hole 613 at the lower end of the sealing shell 611 draws air outwards to move the elastic membrane 626 and the lower template 625 downwards. After the lower template 625 moves to the lowest point under the action of gravity, the horizontal end of the connecting hole 628 is located at the upper end of the lower template 625. The air is continued to be drawn out to remove the air between the elastic membrane 626 and the lower template 625, so that the elastic membrane 626 is close to the inner wall of the outer frame 627 and the upper end surface of the lower template 625, which is convenient for the next use.

Claims

1. A demoulding device for composite material manufacturing, characterized in that: The invention comprises a support rod (1), a top plate (2), a bottom plate (3), a pressing device (4), an air pump (5) and a fixing device (6); the upper end of the bottom plate (3) is fixedly connected to the support rod (1), and the upper end of the support rod (1) is fixedly connected to the top plate (2); the pressing device (4) is fixedly connected to the lower end of the top plate (2); the fixing device (6) is fixedly connected to the upper end of the bottom plate (3); and the air pump (5) is fixedly connected to the side of the fixing device (6); The fixing device (6) comprises a sealing device (61) and a movable device (62); the sealing device (61) is fixedly connected to the upper end of the bottom plate (3); and the movable device (62) is fixedly connected inside the sealing device (61); The sealing device (61) comprises a sealing shell (611); a groove is provided at the top of the sealing shell (611); a vertical slideway (612) is provided on the side wall of the groove on the sealing shell (611); and a perforation (613) is provided at the middle and bottom of the side of the sealing shell (611); an air pump (5) is fixedly connected to the side of each perforation (613); a slide groove I (614) is provided on the inner wall of the slideway (612); the slide groove I (614) is located between two perforations (613); a slider (616) slidably matched with the slide groove I (614) is provided in the slide groove I (614); a spring (615) is fixedly connected between the slider (616) and the inner wall of the slide groove I (614); The movable device (62) comprises a fixed cylinder (621), a limit block (623), a connecting rod (624), a lower template (625), an elastic membrane (626) and an outer frame (627); the fixed cylinder (621) is fixedly connected to the inner bottom surface of the sealed shell (611), the top of the fixed cylinder (621) is hollowed out, and a slide groove II (622) is provided on the inner wall of the fixed cylinder (621); the lower end of the connecting rod (624) is slidably matched with the fixed cylinder (621), and the bottom of the side of the connecting rod (624) is fixedly connected with a slide groove II (622) that slides with the slide groove II (622). A limit block (623) is movably matched, and the upper end of the connecting rod (624) is fixedly connected to a lower template (625); the outer frame (627) is fixedly connected to the inner wall of the sealing shell (611), and the lower template (625) is slidably matched with the outer frame (627); the upper end of the outer frame (627) is fixedly connected to an elastic membrane (626), and the outer frame (627) is also provided with an L-shaped connecting hole (628), the vertical end of the connecting hole (628) passes through the lower end of the outer frame (627), and the horizontal end of the connecting hole (628) passes through the inner wall of the outer frame (627).

2. A demoulding device for composite material manufacturing according to claim 1, characterized in that: The side surface of the sliding block (616) is configured as an inclined surface.

3. A demoulding device for composite material manufacturing according to claim 2, characterized in that: The pressing device (4) comprises a hydraulic cylinder (41), a connecting block (42), a sliding block (44), an insert rod (45) and an upper template (48); the cylinder body of the hydraulic cylinder (41) is fixedly connected to the lower end of the top plate (2), and the cylinder rod is fixedly connected to the connecting block (42); the lower end of the connecting block (42) is fixedly connected to the upper template (48), the side of the connecting block (42) is provided with a slide groove III (43), and the side of the insert rod (45) is fixedly connected to the slide groove III (43). III (43) a sliding block (44) that is slidably matched, a transverse ventilation hole (46) is also provided on the insertion rod (45), and a slot (47) is provided on the outer side of the insertion rod (45); the connecting block (42) is slidably matched with the groove on the sealing shell (611); the insertion rod (45) is slidably matched with the slideway (612); the upper template (48) is slidably matched with the outer frame (627); the slider (616) is slidably matched with the slot (47).

4. A demoulding device for composite material manufacturing according to claim 3, characterized in that: When the upper template (48) is located inside the outer frame (627), the insertion rod (45) is located in the slideway (612), the vent hole (46) is connected to the through hole (613) located in the middle of the sealed shell (611), and the slider (616) is located in the slot (47).

5. A demoulding device for composite material manufacturing according to claim 4, characterized in that: When the lengths of the fixed tube (621) and the connecting rod (624) reach their maximum, the lower template (625) is still located in the outer frame (627), and at this time, the upper end of the lower template (625) is still connected to the horizontal end of the connecting hole (628).

6. A demoulding device for composite material manufacturing according to claim 5, characterized in that: The elastic membrane (626) is closely attached to the inner wall of the outer frame (627) and the upper end surface of the lower template (625).

7. The method for using a demoulding device for composite material manufacturing according to claim 6, characterized in that: The method of use comprises the following steps: Step 1: placing the composite material (7) on the upper end of the lower template (625) inside the outer frame (627); Step 2: Start the hydraulic cylinder (41) to move the upper template (48) to the upper end of the composite material (7) to shape it; Step 3: Reversely start the hydraulic cylinder (41) to separate the upper template (48) from the outer frame (627); Step 4: Start the air pump (5) to form an air pressure difference between the upper and lower ends of the composite material (7), so that the composite material (7) is separated from the outer frame (627) and the lower template (625).

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