Demolding device for prepreg compression molding

Abstract

The utility model relates to the technical field of demolding devices, and discloses a demolding device for prepreg compression molding, which comprises a bottom plate and a top plate, a lower mold is slidably connected in the bottom plate, and driving components for providing power are fixedly connected to the front and rear sides of the inner wall of the bottom plate. Rotating plates are rotatably connected to the left and right ends of the driving assemblies, two concave plates are rotatably connected to the close ends of the multiple rotating plates, guide plates are fixedly connected to the top sides of the concave plates, clamping plates are fixedly connected to the top sides of the guide plates, and transmission plates are rotatably connected to the interiors of the close ends of the two driving assemblies; the close ends of the two transmission plates are rotationally connected with a sliding plate. According to the utility model, the transmission plate is pushed to slide upwards, then the ejection plate is pushed to slide upwards, and a molded product is ejected out of the lower die through the ejection plate, so that the molded product does not need to be pried out by a crowbar, the scratch is avoided, and the yield is further improved.

Description

Technical Field

[0001] This utility model relates to the field of demolding device technology, and in particular to a demolding device for prepreg molding. Background Technology

[0002] Prepregs are made from fiber-reinforced materials and resin matrices through specific processing. They primarily consist of high-performance fibers such as carbon fiber, glass fiber, and aramid fiber, and are commonly made from thermosetting and thermoplastic resins. Thermosetting resins, such as epoxy resins and phenolic resins, possess excellent adhesion, mechanical properties, and chemical resistance. After curing, they form an irreversible three-dimensional network structure that firmly bonds the fibers together, giving the composite material a stable shape and performance. Thermoplastic resins, such as polyetheretherketone (PEEK) and polystyrene (PS), have high toughness, recyclability, and good processability, providing prepregs with unique usage characteristics and processing advantages.

[0003] First, clean the mold and apply a release agent evenly. Then, cut the prepreg according to the design requirements and place it in the mold cavity, removing any air bubbles between layers. Next, close the mold and apply pressure using a press. Then, place the mold into a heating device and heat it according to the heating curve, strictly controlling parameters such as temperature, pressure, and time to solidify the prepreg. After the mold cools, use a pry bar or other tools to pry the molded product off from the edge of the mold. If the product is stuck tightly to the mold, it needs to be pried repeatedly to separate it.

[0004] In existing technologies, during the demolding process of some prepreg molding, the product is simply pried off from the edge of the mold using simple tools such as pry bars. When the product is tightly adhered to the mold, repeated prying can easily leave scratches, dents and other defects on the surface of the product, affecting the appearance quality of the product and reducing the yield. Therefore, in order to address the above shortcomings, a demolding device for prepreg molding is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a demolding device for prepreg molding, which aims to improve the problem in the prior art where the use of pry bars during the demolding process of some prepreg molding processes causes scratches on the surface of the finished product, affecting the yield.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A demolding device for prepreg molding includes a base plate and a top plate. A lower mold is slidably connected inside the base plate. A drive assembly for providing power is fixedly connected to both the front and rear sides of the inner wall of the base plate. Rotating plates are rotatably connected to both ends of the drive assembly. Two concave plates are rotatably connected to the adjacent ends of the plurality of rotating plates. A guide plate is fixedly connected to the top side of the concave plates. A clamping plate is fixedly connected to the top side of the guide plate. A transmission plate is rotatably connected inside the adjacent ends of the two drive assemblies. A sliding plate is rotatably connected to the adjacent ends of the two transmission plates. An ejector plate is fixedly connected to the top side of the sliding plate.

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

[0009] A cylinder is fixedly connected inside the top plate. An upper mold is fixedly connected to the driving end of the cylinder. Adjusting cylinders are fixedly connected to both ends of the upper mold. Multiple connecting plates are fixedly connected inside the adjusting cylinders. A limiting plate is fixedly connected to one side of the multiple connecting plates. A sliding column is slidably connected inside the limiting plate. A spring is sleeved on the outside of the sliding column. A piston plate is fixedly connected to the bottom side of the sliding column. A circular plate is fixedly connected to the top side of the sliding column.

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

[0011] The top four corners of the base plate are fixedly connected to columns, and the top sides of multiple columns are fixedly connected to the bottom side of the top plate.

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

[0013] Both drive components include electric push rods, with the opposite sides of the two electric push rods fixedly connected to the front and rear sides of the inner wall of the base plate, respectively, and the drive end of the electric push rod is fixedly connected to an open plate;

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

[0015] The left and right ends of the opening plate are rotatably connected to the interior of the two rotating plates, and the interior of the two opening plates is rotatably connected to the far ends of the two transmission plates.

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

[0017] The bottom plate has strip-shaped openings on both the left and right sides of its top side, and the guide plate is slidably connected to the inside of the strip-shaped openings.

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

[0019] The top end of the spring is fixedly connected to the bottom side of the limiting plate, and the bottom end of the spring is fixedly connected to the top side of the piston plate.

[0020] As a further description of the above technical solution:

[0021] The piston plate is slidably connected to the inner wall of the bottom end of the adjusting cylinder, and the bottom side of the circular plate is in contact with the top side of the limiting plate.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, by pushing the transmission plate upward, the ejector plate is pushed upward, and the molded product is ejected from the lower mold by the ejector plate, thus eliminating the need to pry it out with a pry bar, avoiding scratches, and improving the yield rate; at the same time, by driving the guide plate on the top side to slide to the opposite side, the guide plate then drives the clamping plate on the top side to move, so that it is no longer clamped and fixed to the lower mold. At this time, the lower mold can be taken out for cleaning, thus avoiding affecting the next operation.

[0024] 2. In this utility model, the sliding column is driven to slide upward and provide guidance. At the same time, the piston plate will also squeeze the spring, so that the spring can store elastic potential energy and then give the piston plate a force in the opposite direction. When the piston plate slides to no longer contact the adjusting cylinder, the pressure inside the lower mold and the upper mold will be removed by the adjusting cylinder to avoid excessive internal pressure, thereby ensuring that the prepreg is evenly stressed and achieving a good molding effect. Attached Figure Description

[0025] Figure 1 This is a perspective view of a demolding device for prepreg molding proposed in this utility model;

[0026] Figure 2 This is a schematic diagram of the rotating plate of a demolding device for prepreg molding proposed in this utility model;

[0027] Figure 3 This is a schematic diagram of the transmission plate of a demolding device for prepreg molding proposed in this utility model;

[0028] Figure 4 This is a schematic diagram of the structure of the adjusting cylinder of a demolding device for prepreg molding proposed in this utility model;

[0029] Figure 5 This is a schematic diagram of the sliding column of a demolding device for prepreg molding proposed in this utility model.

[0030] Legend:

[0031] 1. Base plate; 2. Lower mold; 3. Electric push rod; 4. Opening plate; 5. Rotating plate; 6. Concave plate; 7. Guide plate; 8. Clamping plate; 9. Strip opening; 10. Transmission plate; 11. Sliding plate; 12. Ejector plate; 13. Column; 14. Top plate; 15. Cylinder; 16. Upper mold; 17. Adjusting cylinder; 18. Connecting plate; 19. Limiting plate; 20. Sliding column; 21. Spring; 22. Piston plate; 23. Circular plate. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Reference Figures 1 to 3 This utility model provides an embodiment of a demolding device for prepreg molding, comprising a base plate 1 and a top plate 14. The base plate 1 serves as the foundation support for the entire device. A lower mold 2 is slidably connected inside the base plate 1, serving as a container for prepreg molding. Drive components providing power are fixedly connected to both the front and rear sides of the inner wall of the base plate 1, providing power for the demolding process. Each drive component includes an electric push rod 3, which is a linear drive device. The opposite sides of the two electric push rods 3 are fixedly connected to the front and rear sides of the inner wall of the base plate 1, respectively, and are connected by welding to ensure a stable connection between the electric push rods 3 and the base plate 1. An opening plate 4 is fixedly connected to the drive end of the electric push rod 3, allowing the opening plate 4 to slide by activating the electric push rod 3. Rotating plates 5 are rotatably connected to both ends of the drive components. The left and right ends of the opening plates 4 are rotatably connected inside the two rotating plates 5, allowing the two rotating plates 5 to rotate by the opening plates 4. Two concave plates 6 are rotatably connected to one end of multiple rotating plates 5. The rotating plates 5 transmit the rotational force to the concave plates 6, allowing the concave plates 6 to slide left and right.

[0034] A guide plate 7 is fixedly connected to the top side of the concave plate 6, and the guide plate 7 slides synchronously driven by the concave plate 6. A clamping plate 8 is fixedly connected to the top side of the guide plate 7, and the clamping force is formed by the two clamping plates 8 moving closer to each other. The top side of the bottom plate 1 has strip-shaped openings 9 at both the left and right ends, and the strip-shaped openings 9 are rectangular in shape. The outside of the guide plate 7 is slidably connected to the inside of the strip-shaped openings 9 to ensure smooth movement of the guide plate 7 within the strip-shaped openings 9. A transmission plate 10 is rotatably connected to the inside of the two adjacent ends of the two drive components, and the inside of the two opening plates 4 is rotatably connected to the far ends of the two transmission plates 10. The sliding of the opening plates 4 will also push the transmission plates 10 to rotate. A sliding plate 11 is rotatably connected to the adjacent ends of the two transmission plates 10. The sliding plate 11 converts the power from the transmission plates 10 into an upward ejection force. An ejection plate 12 is fixedly connected to the top side of the sliding plate 11, and the ejection plate 12 directly acts to eject the molded product from the lower mold 2. Each of the four corners of the top side of the base plate 1 is fixedly connected to a column 13 by welding, thereby improving the stability of the connection. The top sides of multiple columns 13 are fixedly connected to the bottom side of the top plate 14 by welding, thereby providing stable support for the top plate 14.

[0035] Reference Figure 1 , Figure 4 and Figure 5 A cylinder 15 is fixedly connected inside the top plate 14, providing a power source. An upper mold 16 is fixedly connected to the drive end of the cylinder 15. The upper mold 16 works in conjunction with the lower mold 2 to complete the molding operation of the prepreg. Adjusting cylinders 17 are fixedly connected to both ends of the upper mold 16, used to adjust the pressure. Multiple connecting plates 18 are fixedly connected inside the adjusting cylinders 17, connected by welding to provide stable support for the connecting plates 18. A limiting plate 19 is fixedly connected to adjacent sides of the multiple connecting plates 18, also connected by welding to provide stable support for the limiting plate 19. A sliding column 20 is slidably connected inside the limiting plate 19, allowing the sliding column 20 to slide stably due to the constraint of the limiting plate 19.

[0036] A spring 21 is fitted around the outside of the sliding column 20. By restricting the spring 21, it can be evenly stressed. The top end of the spring 21 is fixedly connected to the bottom side of the limiting plate 19, and the bottom end of the spring 21 is fixedly connected to the top side of the piston plate 22. When the piston plate 22 is subjected to air pressure, it can compress the spring 21, allowing the spring 21 to store elastic potential energy, and then give the piston plate 22 a force in the opposite direction to reset it. The piston plate 22 is slidably connected to the bottom inner wall of the adjusting cylinder 17. By restricting the adjusting cylinder 17, the piston plate 22 can slide stably. A circular plate 23 is fixedly connected to the top side of the sliding column 20, supporting the piston plate 22. The bottom side of the circular plate 23 is in contact with the top side of the limiting plate 19 to prevent the circular plate 23 from slipping.

[0037] Working principle: During the molding stage, the cylinder 15 inside the top plate 14 drives the upper mold 16 to move downwards, cooperating with the lower mold 2 to mold the prepreg. When the raw material is injected into the lower mold 2 and the upper mold 16, pressure is generated inside. This pressure pushes the piston plate 22 to slide upwards, thereby driving the sliding column 20 to slide upwards and providing guidance. At the same time, the piston plate 22 also compresses the spring 21, allowing the spring 21 to store elastic potential energy, which in turn gives the piston plate 22 a force in the opposite direction. When the piston plate 22 slides until it no longer contacts the adjusting cylinder 17, the pressure inside the lower mold 2 and the upper mold 16 is removed by the adjusting cylinder 17, avoiding excessive internal pressure, thus ensuring that the prepreg is evenly stressed and achieving a good molding effect.

[0038] During the demolding stage, the electric push rods 3 on the front and rear sides of the inner wall of the base plate 1 are activated. The electric push rods 3 push the opening plate 4 to slide, and the opening plate 4 drives the rotating plates 5 at both ends to rotate. The rotating plates 5 transmit force to the concave plate 6, causing the concave plate 6 to slide left and right, which in turn drives the guide plate 7 on the top side to slide to the opposite side. The guide plate 7 then drives the clamping plate 8 on the top side to move, so that it is no longer clamped and fixed to the lower mold 2. At this time, the lower mold 2 can be removed and its contents cleaned to avoid affecting the next operation. At the same time, the opening plate 4 will also push the strip opening 9 to rotate, which will push the transmission plate 10 to slide upward, and then push the ejector plate 12 to slide upward. The ejector plate 12 ejects the molded product from the lower mold 2, so that it does not need to be pried out with a pry bar, avoiding scratches and improving the yield.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended 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 described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A debinding device for the moulding of prepreg, comprising a base plate (1) and a top plate (14), characterised in that: The inside of the bottom plate (1) is slidably connected with a lower mold (2), the inner walls of the bottom plate (1) are fixedly connected with power-provided driving assemblies on the front and rear sides, the left and right ends of the driving assemblies are rotatably connected with rotating plates (5), the proximal ends of a plurality of rotating plates (5) are rotatably connected with two concave plates (6), the top side of the concave plate (6) is fixedly connected with a guide plate (7), the top side of the guide plate (7) is fixedly connected with a clamping plate (8), the inside of the proximal end of two driving assemblies is rotatably connected with transmission plates (10), the proximal ends of two transmission plates (10) are rotatably connected with sliding plates (11), and the top side of the sliding plate (11) is fixedly connected with an ejection plate (12).

2. A release device for use in the press molding of a prepreg according to claim 1, characterized by: The inside of the top plate (14) is fixedly connected with a gas cylinder (15), the driving end of the gas cylinder (15) is fixedly connected with an upper mold (16), the left and right ends of the upper mold (16) are fixedly connected with adjusting barrels (17), the inside of the adjusting barrel (17) is fixedly connected with a plurality of connecting plates (18), the proximal side of a plurality of connecting plates (18) is fixedly connected with a limiting disc (19), the inside of the limiting disc (19) is slidably connected with a sliding column (20), the outside of the sliding column (20) is sleeved with a spring (21), the bottom side of the sliding column (20) is fixedly connected with a piston plate (22), and the top side of the sliding column (20) is fixedly connected with a circular plate (23).

3. The debinding apparatus for prepreg molding according to claim 1, wherein: The top side of the bottom plate (1) is fixedly connected with a stand (13), and the top side of a plurality of stands (13) is fixedly connected to the bottom side of the top plate (14).

4. The debinding apparatus for prepreg molding according to claim 1, wherein: Both of the driving assemblies comprise an electric push rod (3), and the distal sides of two electric push rods (3) are fixedly connected to the inner walls of the bottom plate (1) on the front and rear sides, respectively.

5. A release device for use in the press molding of a prepreg according to claim 4, characterized in that: The left and right ends of the opening plate (4) are rotatably connected in the interiors of two rotating plates (5), and the interiors of two opening plates (4) are rotatably connected to the distal ends of two transmission plates (10).

6. The release sheet for prepreg molding according to claim 1, wherein: The left and right ends of the top side of the bottom plate (1) are provided with strip-shaped openings (9), and the outside of the guide plate (7) is slidably connected in the interior of the strip-shaped opening (9).

7. The release sheet for prepreg molding according to claim 2, wherein: The top end of the spring (21) is fixedly connected to the bottom side of the limiting disc (19), and the bottom end of the spring (21) is fixedly connected to the top side of the piston plate (22).

8. The debinding apparatus for prepreg molding according to claim 2, wherein: The outside of the piston plate (22) is slidably connected to the bottom end inner wall of the adjusting barrel (17), and the bottom side of the circular plate (23) is in contact with the top side of the limiting disc (19).

Images