Forming die of composite material sandwich structure

Abstract

The invention discloses a forming mold of a composite material sandwich structure, and belongs to the technical field of composite material sandwich structures. The forming mold comprises a base, storage boxes are fixed to the two sides of the top face of the base through bolts, a supporting plate is fixed to the top ends of the two storage boxes through bolts, and a motor is started to drive a threaded rod to rotate, so that a lifting plate moves upwards; the lifting plate drives the two ejector rods to move upwards, the two ejector rods drive the bottom plate to move upwards, cured prepreg and core materials in the lower mold are ejected out, the working efficiency is improved, a rotating block is rotated, so that the rotating block drives a lead screw to rotate, the lead screw and a sliding rod move relatively, the lead screw drives a clamping block to move, and therefore the clamping block is moved out of a clamping groove; the device is simple to operate, not only shortens the production cycle, but also is not easy to wear due to excessive disassembly, and is beneficial to prolonging the service life.

Description

Technical Field

[0001] The present invention relates to the technical field of composite material sandwich structures, in particular to a forming die for composite material sandwich structures. Background Art

[0002] In high-end manufacturing fields such as aerospace, rail transportation, and new energy vehicles, composite sandwich structures are widely used due to their high specific strength, excellent thermal and sound insulation properties, and lightweight advantages. Their molding process relies on specialized molds to achieve precise shaping, but existing molding molds have obvious defects:

[0003] Traditionally, upper and lower molds are often integrated or bolted together. After the product solidifies, disassembly is cumbersome and time-consuming, extending production cycles and causing mold wear and tear due to excessive disassembly, shortening its service life. Furthermore, due to the strong adhesion between composite materials and the mold surface, the lack of effective demolding methods reduces work efficiency. Summary of the Invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a forming die for a composite material sandwich structure.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: it includes a base, storage boxes are bolted on both sides of the top surface of the base, support plates are fixed to the top ends of the two storage boxes by bolts, the top surfaces of the support plates are detachably connected to the lower mold, support rods are fixed to the four corners of the top surface of the support plate by bolts, the top ends of the four support rods are fixed to the top plate by bolts, the inner bottom surface of the top plate is fixed to the cylinder and the air compressor by bolts, the free end of the cylinder is fixed to the connecting plate by bolts, the bottom surface of the connecting plate is detachably connected to the upper mold, and a demolding assembly is provided above the base.

[0006] As a further description of the above technical solution:

[0007] The demoulding assembly includes a motor fixed to the middle of the top surface of the base by bolts, a threaded rod is welded to the end of the output shaft of the motor, the top end of the threaded rod is rotatably connected to the bottom surface of the support plate, the external thread of the threaded rod is connected to the lifting plate, and sliding rods are welded at both ends of the lifting plate. A sliding groove is provided on the side where the two storage boxes are close to each other, and one end of the two sliding rods is slidably connected to the two sliding grooves respectively, and push rods are welded on both sides of the top surface of the lifting plate, and the top ends of the two push rods slide through the support plate and the lower mold and extend to the inside of the lower mold and are welded to the bottom plate.

[0008] As a further description of the above technical solution:

[0009] The bottom wall of the lower mold and the support plate are both provided with two through holes, and the two ejector rods are respectively slidably connected in the corresponding through holes.

[0010] As a further description of the above technical solution:

[0011] Sliding rods are welded on both sides of the bottom surface of the connecting plate and both sides of the top surface of the supporting plate, and screw rods are threaded through the four sliding rods. Slots are provided on both sides of the lower mold and both sides of the upper mold. One end of the screw rod is rotatably connected to a clamping block, and the clamping block is clamped in a corresponding slot. A rotating block is welded on the other end of the screw rod.

[0012] As a further description of the above technical solution:

[0013] The air compressor is connected to the cylinder through a pipeline.

[0014] As a further description of the above technical solution:

[0015] The front sides of the two storage boxes are both connected with box doors.

[0016] As a further description of the above technical solution:

[0017] After the mold is closed, the air compressor is started so that the cylinder drives the upper mold to move upward, and then the motor is started so that the motor drives the threaded rod to rotate, so that the lifting plate moves upward, so that the lifting plate drives the two ejector rods to move upward, and the two ejector rods drive the bottom plate to move upward, ejecting the cured prepreg and core material in the lower mold.

[0018] As a further description of the above technical solution:

[0019] By rotating the rotating block, the rotating block drives the screw rod to rotate, so that the screw rod and the slide rod move relative to each other, and the screw rod drives the clamping block to move out of the clamping slot, so that the upper mold and the lower mold can be removed from the device.

[0020] The present invention has the following beneficial effects:

[0021] 1. In the present invention, the motor is started, so that the motor drives the threaded rod to rotate, so that the lifting plate moves upward, so that the lifting plate drives the two ejector rods to move upward, and the two ejector rods drive the bottom plate to move upward, so that the cured prepreg and core material in the lower mold are ejected, thereby improving work efficiency.

[0022] 2. In the present invention, by rotating the rotating block, the rotating block drives the screw to rotate, so that the screw and the slide rod move relative to each other, and the screw drives the clamping block to move, thereby moving out of the clamping slot, and the upper mold and the lower mold can be removed from the device. The operation is simple, which not only shortens the production cycle, but also is not easy to cause mold wear due to excessive disassembly, which is conducive to improving the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 Schematic diagram of the overall structure of a composite sandwich structure forming mold proposed by the present invention Figure 1 ;

[0024] Figure 2 Schematic diagram of the overall structure of a composite sandwich structure forming mold proposed by the present invention Figure 2 ;

[0025] Figure 3 A forming die for a composite sandwich structure proposed by the present invention Figure 2 A magnified schematic diagram;

[0026] Figure 4 This is a partial cross-sectional schematic diagram of a forming die for a composite sandwich structure proposed in the present invention.

[0027] Legend:

[0028] 1. Base; 2. Storage box; 3. Support plate; 4. Support rod; 5. Top plate; 6. Cylinder; 7. Connecting plate; 8. Upper mold; 9. Lower mold; 10. Motor; 11. Lifting plate; 12. Push rod; 13. Slide; 14. Slide; 15. Rotating block; 16. Screw; 17. Block; 18. Slot; 19. Bottom plate; 20. Threaded rod. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not 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 efforts are within the scope of protection of the present invention.

[0030] Reference Figures 1-4 , an embodiment provided by the present invention includes a base 1, storage boxes 2 are bolted on both sides of the top surface of the base 1, a variety of tools are required in the molding process, such as scrapers, brushes, clamps, etc., as well as some consumables, such as release agents, sealants, etc., the storage boxes 2 provide a special storage space for these items, the tops of the two storage boxes 2 are fixed with support plates 3 by bolts, the top surface of the support plates 3 is detachably connected to the lower mold 9, the four corners of the top surface of the support plates 3 are fixed with support rods 4 by bolts, the tops of the four support rods 4 are fixed with top plates 5 by bolts, the inner bottom surface of the top plate 5 is fixed with a cylinder 6 and an air compressor by bolts, the free end of the cylinder 6 is fixed with a connecting plate 7 by bolts, the bottom surface of the connecting plate 7 is detachably connected to the upper mold 8, and a demoulding assembly is provided above the base 1.

[0031] The demoulding assembly includes a motor 10 fixed to the middle of the top surface of the base 1 by bolts, and a threaded rod 20 is welded to the end of the output shaft of the motor 10. The top of the threaded rod 20 is rotatably connected to the bottom surface of the support plate 3, and the external thread of the threaded rod 20 is connected to the lifting plate 11. Both ends of the lifting plate 11 are welded with sliding rods 14. The two storage boxes 2 are close to each other on both sides. A slide groove 13 is provided, and one end of the two sliding rods 14 is respectively slidably connected to the two slide grooves 13. The setting of the slide groove 13 and the slide rod 14 plays a guiding role, so that the lifting plate 11 can be lifted and lowered stably. Push rods 12 are welded on both sides of the top surface of the lifting plate 11, and the top ends of the two push rods 12 slide through the support plate 3 and the lower mold. The tool 9 extends to the interior of the lower mold 9 and is welded with a bottom plate 19. Two through holes are provided on the bottom wall of the lower mold 9 and the support plate 3. The two push rods 12 are slidably connected to the corresponding through holes. Slide rods 14 are welded on both sides of the bottom surface of the connecting plate 7 and both sides of the top surface of the support plate 3. The four slide rods 14 are threadedly connected with screw rods 16. Slots 18 are provided on both sides of the lower mold 9 and both sides of the upper mold 8. One end of the screw rod 16 is rotatably connected to a block 17, which is clamped in a corresponding slot 18. The other end of the screw rod 16 is welded with a rotating block 15. The air compressor is connected to the cylinder 6 through a pipeline, and the front sides of the two storage boxes 2 are connected with box doors.

[0032] Working principle: During operation, the composite material prepreg and sandwich material are laid in the cavity of the lower mold 9 according to the design requirements. Then, the air compressor is started to provide a power source for the cylinder 6, so that the free end of the cylinder 6 drives the upper mold 8 to move downward, thereby applying downward pressure. Only through the cooperation of the upper mold 8 and the lower mold 9 can the material be evenly extruded from the upper and lower directions. The two work together to make the prepreg and the core material tightly combined and solidified.

[0033] After the mold is closed, the air compressor is started so that the cylinder 6 drives the upper mold 8 to move upward, and then the motor 10 is started so that the motor 10 drives the threaded rod 20 to rotate, so that the lifting plate 11 moves upward, so that the lifting plate 11 drives the two ejector rods 12 to move upward, and the two ejector rods 12 drive the bottom plate 19 to move upward, and the cured prepreg and core material in the lower mold 9 are ejected, thereby improving work efficiency.

[0034] By rotating the rotating block 15, the rotating block 15 drives the screw rod 16 to rotate, so that the screw rod 16 and the slide rod 14 move relative to each other, and the screw rod 16 drives the clamping block 17 to move, thereby moving out of the clamping groove 18, and the upper mold 8 and the lower mold 9 can be removed from the device. The operation is simple, which not only shortens the production cycle, but also is not easy to cause mold wear due to excessive disassembly, which is conducive to improving the service life.

[0035] The electrical components appearing in this article are all connected to an external main controller and 220V AC power, and the main controller can be a conventional known device that controls a computer, etc. The specific implementation method of this disclosure omits the detailed description of known functions and known components. To ensure the compatibility of the equipment, the operating methods used are consistent with the parameters of marketed equipment.

[0036] In the present invention, unless otherwise clearly stipulated and limited, the terms "install", "set", "connect", "fix", "screw" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0037] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A forming die for a composite sandwich structure, comprising a base (1), characterized in that: Storage boxes (2) are fixed to both sides of the top surface of the base (1) by bolts, support plates (3) are fixed to the top ends of the two storage boxes (2) by bolts, the top ends of the support plates (3) are detachably connected to a lower mold (9), support rods (4) are fixed to the four corners of the top surface of the support plate (3) by bolts, the top ends of the four support rods (4) are fixed to a top plate (5) by bolts, the inner bottom surface of the top plate (5) is fixed to a cylinder (6) and an air compressor by bolts, the free end of the cylinder (6) is fixed to a connecting plate (7) by bolts, the bottom surface of the connecting plate (7) is detachably connected to an upper mold (8), and a demoulding assembly is provided above the base (1).

2. The forming die for a composite sandwich structure according to claim 1, characterized in that: The demoulding assembly includes a motor (10) fixed to the middle of the top surface of the base (1) by bolts, a threaded rod (20) is welded to the end of the output shaft of the motor (10), the top end of the threaded rod (20) is rotatably connected to the bottom surface of the support plate (3), the external thread of the threaded rod (20) is connected to the lifting plate (11), and both ends of the lifting plate (11) are welded with sliding rods (14), and the sides of the two storage boxes (2) close to each other are provided with sliding grooves (13), one end of the two sliding rods (14) is respectively slidably connected to the two sliding grooves (13), and both sides of the top surface of the lifting plate (11) are welded with push rods (12), and the top ends of the two push rods (12) slide through the support plate (3) and the lower mold (9) and extend to the inside of the lower mold (9) and are welded with a bottom plate (19).

3. The forming die for a composite sandwich structure according to claim 2, characterized in that: Two through holes are provided on the bottom wall of the lower mold (9) and the support plate (3), and the two ejector rods (12) are respectively slidably connected in the corresponding through holes.

4. The forming die for a composite sandwich structure according to claim 1, characterized in that: Slide rods (14) are welded on both sides of the bottom surface of the connecting plate (7) and both sides of the top surface of the supporting plate (3), and screw rods (16) are threadedly connected on the four slide rods (14). Slots (18) are provided on both sides of the lower mold (9) and both sides of the upper mold (8), and one end of the screw rod (16) is rotatably connected to a clamping block (17), and the clamping block (17) is clamped in a corresponding one of the clamping slots (18). The other end of the screw rod (16) is welded with a rotating block (15).

5. The forming die for a composite sandwich structure according to claim 1, characterized in that: The air compressor is connected to the cylinder (6) through a pipeline.

6. The forming die for a composite sandwich structure according to claim 1, characterized in that: The front sides of the two storage boxes (2) are both connected with box doors.

7. The forming die for a composite sandwich structure according to claim 2, characterized in that: After the mold is closed, the air compressor is started so that the cylinder (6) drives the upper mold (8) to move upward, and then the motor (10) is started so that the motor (10) drives the threaded rod (20) to rotate, so that the lifting plate (11) moves upward, so that the lifting plate (11) drives the two ejector rods (12) to move upward, and the two ejector rods (12) drive the bottom plate (19) to move upward, so that the cured prepreg and core material in the lower mold (9) are ejected.

8. The forming die for a composite sandwich structure according to claim 4, characterized in that: By rotating the rotating block (15), the rotating block (15) drives the screw rod (16) to rotate, so that the screw rod (16) and the slide bar (14) move relative to each other, and the screw rod (16) drives the clamping block (17) to move, thereby moving out of the clamping groove (18), and the upper mold (8) and the lower mold (9) can be disassembled from the device.

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