Integrated forming die for embedded metal flange composite material barrel

Abstract

The utility model relates to the technical field of composite material barrel forming dies, and provides an integrated forming die for a composite material barrel with an embedded metal flange, which comprises a core die, an upper plate, a lower plate, a side plate, an upper lining plate and a lower lining plate, the upper plate and the lower plate are respectively detachably arranged at the top and the bottom of the core die, the side plate is detachably arranged on the side surface of the core die, and the upper lining plate and the lower lining plate are detachably arranged on the side surface of the core die. A forming cavity is formed among the core mold, the upper plate, the lower plate and the side plates, the upper lining plate is detachably arranged on the upper plate, the lower lining plate is detachably arranged on the lower plate, the upper lining plate and the lower lining plate are both located in the forming cavity, the upper lining plate and the lower lining plate are both provided with positioning holes, and the positioning holes are used for installing metal parts. By means of the technical scheme, the problem that in the prior art, the strength of the connecting portion of the composite barrel and the metal piece is difficult to guarantee is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of composite material cylinder forming molds, and specifically, to an integrated forming mold for a composite material cylinder with an embedded metal flange. Background Art

[0002] In modern industrial production, composite materials have been widely used due to their excellent properties, such as high strength, light weight, corrosion resistance, etc. Especially in some fields with high requirements for structural strength and weight, such as aerospace and automotive manufacturing, the advantages of composite materials are becoming more and more obvious.

[0003] In the past, when manufacturing a composite material cylinder with an embedded metal flange, a step-by-step processing method was often adopted. First, the metal flange and the composite material cylinder were manufactured separately, and then they were connected together by welding, bonding, etc. However, this method has many problems. For example, it has a relatively large weight, and the strength of the connection part is often difficult to guarantee, and defects such as cracks and debonding are likely to occur, thus affecting the reliability and service life of the overall structure. Due to the limitations of the connection process in the traditional manufacturing method, the combination between the composite material cylinder and the metal flange is not tight enough, and stress concentration is likely to occur when stressed, resulting in a decline in the performance of the structure. Moreover, the step-by-step manufacturing process is complex, with low efficiency and high cost. With the continuous progress of industrial technology, higher requirements are put forward for the performance, quality and production efficiency of products.

[0004] In response to the above problems, the existing technology has not solved them well, bringing trouble to the normal progress of work in this field. Therefore, it has become an urgent need to develop an integrated forming mold for a composite material cylinder with an embedded metal flange. Summary of the Utility Model

[0005] The utility model provides an integrated forming mold for a composite material cylinder with an embedded metal flange, which solves the problem that it is difficult to guarantee the strength of the connection part between the composite material cylinder and the metal part in the related technology.

[0006] The technical solution of the utility model is as follows: An integrated forming mold for a composite material cylinder with an embedded metal flange, comprising a core mold, an upper plate, a lower plate, side plates, an upper lining plate and a lower lining plate. The upper plate and the lower plate are respectively detachably arranged at the top and bottom of the core mold, the side plates are detachably arranged at the side of the core mold. A forming cavity is formed between the core mold, the upper plate, the lower plate and the side plates. The upper lining plate is detachably arranged on the upper plate, the lower lining plate is detachably arranged on the lower plate. Both the upper lining plate and the lower lining plate are located in the forming cavity. Both the upper lining plate and the lower lining plate have positioning holes for installing metal parts.

[0007] Optionally, both the upper plate and the lower plate are provided with observation holes, and the positions of the observation holes correspond to those of the positioning holes for observing whether the metal part is located in the positioning holes.

[0008] Optionally, there are multiple upper liners, lower liners and side plates, and they are all arranged in a circular ring shape.

[0009] Optionally, both the upper plate and the lower plate are provided with limit card slots for installing the core mold.

[0010] Optionally, it further includes split petals which are detachably arranged on the surface of the core mold. There are multiple split petals which are evenly laid on the surface of the core mold.

[0011] Optionally, the core mold has a first fixing screw hole which is arranged along the radial direction of the core mold, and there are multiple first fixing screw holes.

[0012] Optionally, both the upper plate and the lower plate are provided with a first pressurizing hole which is arranged vertically.

[0013] Optionally, both the upper plate and the lower plate are provided with a first lifting hole which is arranged vertically.

[0014] Optionally, the side plate is provided with a second pressurizing hole and a second lifting hole. The second pressurizing hole is arranged along the radial direction of the core mold, and the second lifting hole is arranged vertically.

[0015] Optionally, both the upper liner and the lower liner are provided with a second fixing screw hole, and both the upper plate and the lower plate are provided with fixing through holes. The positions of the second fixing screw holes correspond to those of the fixing through holes.

[0016] The working principle and beneficial effects of the present utility model are as follows:

[0017] During actual operation, it is necessary to first perform wet winding of prepreg yarn strips on the core mold. After the winding is completed, overall carbon fiber prepreg laying is required. Before laying, first connect and fix the lower plate and the lower lining plate, then fix the whole at the bottom of the core mold, and lay the strengthening area of the inner layer according to the established ply. After the laying of the strengthening area of the inner layer is completed, install the embedded metal parts in the positioning holes of the lower lining plate. For the convenience of assembly, the positioning holes have a taper of 5° and a chamfer at the root. Then connect and fix the upper lining plate and the upper plate, then fix the whole at the top of the core mold, and install the embedded metal parts in the positioning holes of the upper lining plate. Then install the side plates on the side of the core mold to form a molding cavity between the core mold, the upper plate, the lower plate and the side plates, and then perform pre-pressing on the molding cavity. After the pre-pressing is completed, disassemble the upper plate, the upper lining plate and the side plates, lay the strengthening area of the outer layer according to the established ply, install them back after the laying is completed, place the whole mold in the curing furnace, heat the mold systematically through the curing furnace, perform heat sealing when the temperature reaches the heat sealing point, and after the carbon fiber prepreg ply is cured and shaped, disassemble the upper plate, the lower plate and the side plates, then disassemble the upper lining plate and the lower lining plate, and finally disassemble the core mold to obtain the composite material cylinder.

[0018] Using this integrated molding die for a composite material cylinder with an embedded metal flange, first, it effectively reduces the weight of the product. Since integrated molding is achieved, the redundant connection materials and structures in traditional step-by-step processing are avoided, thereby reducing the overall weight on the premise of ensuring strength, which is of great significance for weight-sensitive fields such as aerospace and automotive manufacturing. Secondly, it greatly improves the strength and reliability of the connection part. Integrated molding eliminates defects such as cracks and debonding that may occur in traditional connection methods, making the combination between the composite material cylinder and the metal flange closer and more stable, significantly enhancing the strength and reliability of the overall structure, and extending the service life of the product. Furthermore, it significantly improves production efficiency. Compared with the traditional step-by-step manufacturing process, integrated molding reduces the manufacturing links and processes, greatly shortens the production cycle, and reduces the production cost. In addition, since each component of the die is detachable, it facilitates the maintenance and replacement of the die, reduces the use cost and maintenance difficulty of the die. At the same time, the detachable design also enables the die to adapt to the manufacturing requirements of products with different sizes and specifications, improving the versatility and flexibility of the die. Brief Description of the Drawings

[0019] The following will further illustrate the above characteristics, technical features, advantages and their implementation methods of the present invention in a clear and understandable manner in combination with the drawings of the preferred embodiments.

[0020] Figure 1 It is a schematic diagram of the external structure of an integrated molding die for a composite material cylinder with an embedded metal flange;

[0021] Figure 2Schematic diagram of the internal structure of an integrally formed mold for an embedded metal flange composite cylinder

[0022] Figure 3 Schematic diagram of the bottom surface of the lower lining plate in the present utility model

[0023] Figure 4 Schematic diagram of the split part in the present utility model

[0024] Figure 5 Schematic diagram of the upper plate and the lower plate in the present utility model

[0025] Figure 6 Schematic diagram of the upper lining plate and the lower lining plate in the present utility model

[0026] Figure 7 Schematic diagram of the finally obtained composite cylinder in the present utility model

[0027] In the figure: 1. Core mold, 2. Upper plate, 3. Lower plate, 4. Side plate, 5. Upper lining plate, 6. Lower lining plate, 7. Forming cavity, 8. Positioning hole, 9. Metal part, 10. Observation hole, 11. Limit card slot, 12. Split part, 13. First fixing screw hole, 14. First pressure hole, 15. First lifting hole, 16. Second pressure hole, 17. Second lifting hole, 18. Second fixing screw hole, 19. Fixing through hole Detailed implementation manners

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will describe the detailed implementation manners of the present utility model with reference to the accompanying drawings. Obviously, the accompanying drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings, and other implementation manners can also be obtained

[0029] For the sake of simplicity of the drawing, only the parts related to the utility model are schematically shown in each drawing, and they do not represent the actual structure of the product. In addition, for the sake of simplicity of the drawing and easy understanding, in some drawings, parts with the same structure or function are only schematically shown for one of them, or only one of them is marked. In this article, "one" not only means "only this one", but also means "more than one" situation, and "several" includes "two" and "more than two"

[0030] In this text, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "linkage" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral 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, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0031] In addition, in the description of this application, the terms "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0032] Referring to Figures 1 to 7 , which is the first embodiment of the present utility model, a one-piece forming die for an embedded metal flange composite cylinder is proposed, including a core mold 1, an upper plate 2, a lower plate 3, side plates 4, an upper lining plate 5, and a lower lining plate 6. The upper plate 2 and the lower plate 3 are respectively detachably arranged at the top and bottom of the core mold 1, the side plates 4 are detachably arranged on the side of the core mold 1, a forming cavity 7 is formed between the core mold 1, the upper plate 2, the lower plate 3, and the side plates 4. The upper lining plate 5 is detachably arranged on the upper plate 2, the lower lining plate 6 is detachably arranged on the lower plate 3. Both the upper lining plate 5 and the lower lining plate 6 are located in the forming cavity 7, and both the upper lining plate 5 and the lower lining plate 6 have positioning holes 8 for installing metal parts 9.

[0033] In this embodiment, during actual operation, it is necessary to first lay the overall carbon fiber prepreg on the core mold 1. Before laying, first connect and fix the lower plate 3 and the lower lining plate 6, and then integrally fix them at the bottom of the core mold 1. Lay the inner strengthening area according to the established layup. After the laying of the inner strengthening area is completed, install the embedded metal part 9 in the positioning hole 8 of the lower lining plate 6. Then connect and fix the upper lining plate 5 and the upper plate 2, and then integrally fix them at the top of the core mold 1, and install the embedded metal part 9 in the positioning hole 8 of the upper lining plate 5. For the convenience of assembly, the positioning hole 8 has a taper of 5° and a chamfer at the root. Then install the side plates 4 on the side of the core mold 1 to form a forming cavity 7 between the core mold 1, the upper plate 2, the lower plate 3, and the side plates 4, and then pre-press the inside of the forming cavity 7. After the pre-pressing is completed, disassemble the upper plate 2, the upper lining plate 5, and the side plates 4, lay the outer strengthening area according to the established layup, install them back after the laying is completed, place the whole mold in a curing furnace, heat the mold systematically through the curing furnace, perform heat fusion when the temperature reaches the heat fusion mold point, and after the carbon fiber prepreg layup is cured and shaped, disassemble the upper plate 2, the lower plate 3, and the side plates 4, then disassemble the upper lining plate 5 and the lower lining plate 6, and finally disassemble the core mold 1 to obtain the composite cylinder.

[0034] Using this integrated molding die for the composite material cylinder with an embedded metal flange, first, it effectively reduces the weight of the product. Since the integrated molding is achieved, the redundant connecting materials and structures in traditional step-by-step processing are avoided, thus reducing the overall weight while ensuring the strength. This is of great significance for weight-sensitive fields such as aerospace and automotive manufacturing. Secondly, it greatly improves the strength and reliability of the connection part. The integrated molding eliminates defects such as cracks and debonding that may occur in traditional connection methods, making the combination between the composite material cylinder and the metal flange closer and more stable, significantly enhancing the strength and reliability of the overall structure and extending the service life of the product. Thirdly, it significantly improves the production efficiency. Compared with the traditional step-by-step manufacturing process, the integrated molding reduces the manufacturing links and processes, greatly shortens the production cycle, and reduces the production cost. In addition, since each component of the die is detachable, it facilitates the maintenance and replacement of the die, reduces the use cost and maintenance difficulty of the die. At the same time, the detachable design also enables the die to adapt to the manufacturing requirements of products with different sizes and specifications, improving the versatility and flexibility of the die.

[0035] Both the upper plate 2 and the lower plate 3 are provided with observation holes 10, and the positions of the observation holes 10 correspond to those of the positioning holes 8, for observing whether the metal part 9 is located in the positioning holes 8.

[0036] In this embodiment, during the actual working process, the observation holes 10 provided on the upper plate 2 and the lower plate 3 play an important role. Through the observation holes 10 on the upper plate 2 or the lower plate 3, it can be clearly seen whether the metal part 9 is accurately placed in the corresponding positioning hole 8. The deviation in the placement position of the metal part 9 can be timely detected through the observation holes 10, avoiding the discovery of problems only during the subsequent processing, thereby reducing the rejection rate and the cost of rework. Moreover, the observation holes 10 enable the operator to quickly confirm the position of the metal part 9 without disassembling the upper plate 2 and the lower plate 3, saving operation time and improving the production efficiency. At the same time, accurately placing the metal part 9 can ensure the structural stability and performance reliability of the formed composite material cylinder, enhancing the safety and durability of the product during use.

[0037] The upper liner plates 5, the lower liner plates 6 and the side plates 4 are all multiple and are all arranged in a circular ring.

[0038] In this embodiment, the upper liner 5, the lower liner 6, and the side plate 4 are all designed with multiple components surrounding to form a circular ring. Both the upper liner 5 and the lower liner 6 include multiple arc-shaped spliceable plates, which closely surround the top and bottom of the core mold 1. The side plate 4 is also formed by splicing multiple arc-shaped plate members into a complete circular ring, surrounding the side of the core mold 1. The form of multiple components facilitates production and processing, reducing the manufacturing difficulty and cost of individual components. Secondly, when a certain component is damaged or worn, the component can be replaced individually without replacing the entire liner or the side plate 4, saving maintenance costs. Moreover, the splicing method of multiple components can better adapt to core molds 1 of different sizes and shapes, improving the versatility and flexibility of the mold. Furthermore, this structure surrounding to form a circular ring can evenly bear the pressure and stress during the molding process, ensuring the quality and accuracy of the composite material cylinder molding, making the structure of the product more stable and the performance more reliable.

[0039] Both the upper plate 2 and the lower plate 3 have limit card slots 11 for installing the core mold 1.

[0040] In this embodiment, the limit card slots 11 on the upper plate 2 and the lower plate 3 play a key role. The limit card slots 11 on the upper plate 2 and the lower plate 3 are circular blind holes with appropriate depth. The top and bottom of the core mold 1 have chamfers to facilitate cooperation with the limit card slots 11. When assembling the mold, the top and bottom of the core mold 1 are accurately inserted into the corresponding limit card slots 11 on the upper plate 2 and the lower plate 3. Since the size of the limit card slots 11 matches the end of the core mold 1, the core mold 1 can be firmly clamped therein, ensuring that the core mold 1 will not displace during the subsequent production process.

[0041] It further includes split petals 12, which are detachably arranged on the surface of the core mold 1. There are multiple split petals 12, which are evenly laid on the surface of the core mold 1.

[0042] The core mold 1 has first fixing screw holes 13, which are arranged along the radial direction of the core mold 1, and there are multiple first fixing screw holes 13.

[0043] In this embodiment, there are multiple first fixing screw holes 13 on the core mold 1, and the first fixing screw holes 13 are opened along the radial direction of the core mold 1. Each split petal 12 corresponds to two first fixing screw holes 13, so as to realize the stable positioning of the split petals 12 and prevent the split petals 12 from rotating or shaking. There are multiple split petals 12. After being evenly laid on the surface of the core mold 1, several rib grooves can be formed. During work, it is necessary to first wet-wind prepreg yarn strips on the rib grooves, and then lay the overall carbon fiber prepreg after the rib grooves are wound.

[0044] Both the upper plate 2 and the lower plate 3 have first pressure holes 14, which are arranged vertically.

[0045] The upper plate 2 and the lower plate 3 both have a first hoisting hole 15, and the first hoisting hole 15 is arranged vertically.

[0046] The side plate 4 has a second pressure hole 16 and a second hoisting hole 17. The second pressure hole 16 is arranged radially along the core mold 1, and the second hoisting hole 17 is arranged vertically.

[0047] In this embodiment, before laying the outer reinforcement area of the outer layer, the forming cavity 7 can be pre-pressed through the first pressure hole 14 and the second pressure hole 16 to help the inner reinforcement area of the inner layer to be formed; the first hoisting hole 15 and the second hoisting hole 17 can cooperate with the hoisting mechanism, which is convenient for the separation of each part during the mold closing and demolding stages, thereby improving the demolding efficiency.

[0048] The upper lining plate 5 and the lower lining plate 6 both have a second fixing screw hole 18. The upper plate 2 and the lower plate 3 both have a fixing through hole 19, and the positions of the second fixing screw hole 18 and the fixing through hole 19 correspond to each other.

[0049] In this embodiment, during connection, the second fixing screw hole 18 of the upper lining plate 5 is aligned with the fixing through hole 19 of the upper plate 2, and then a bolt is inserted, and the fixed connection is achieved by means of the thread. The same applies to the lower lining plate 6 and the lower plate 3. This method is simple to operate, accurate in positioning, and high in reliability.

[0050] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A composite material cylinder integral molding die with an embedded metal flange, characterized in that: The invention comprises a core mold (1), an upper plate (2), a lower plate (3), a side plate (4), an upper lining plate (5) and a lower lining plate (6); the upper plate (2) and the lower plate (3) are respectively detachably arranged on the top and bottom of the core mold (1); the side plate (4) is detachably arranged on the side of the core mold (1); a molding cavity (7) is formed between the core mold (1), the upper plate (2), the lower plate (3) and the side plate (4); the upper lining plate (5) is detachably arranged on the upper plate (2); the lower lining plate (6) is detachably arranged on the lower plate (3); the upper lining plate (5) and the lower lining plate (6) are both located in the molding cavity (7); the upper lining plate (5) and the lower lining plate (6) are both provided with positioning holes (8); the positioning holes (8) are used for mounting metal parts (9).

2. The one-piece forming mold for composite material cylinder with embedded metal flange according to claim 1 is characterized in that: The upper plate (2) and the lower plate (3) both have an observation hole (10), the observation hole (10) corresponding to the position of the positioning hole (8) and used to observe whether the metal part (9) is located in the positioning hole (8).

3. The one-piece forming die for composite material cylinder with embedded metal flange according to claim 1, characterized in that: The upper lining plate (5), the lower lining plate (6) and the side plate (4) are all multiple and are arranged in a circular ring shape.

4. The one-piece forming die for composite material cylinder with embedded metal flange according to claim 1, characterized in that: The upper plate (2) and the lower plate (3) both have a limiting slot (11), and the limiting slot (11) is used to install the core mold (1).

5. The one-piece forming die for composite material cylinder with embedded metal flange according to claim 1, characterized in that: It also comprises petals (12), wherein the petals (12) are detachably arranged on the surface of the core mold (1), and the petals (12) are multiple and evenly laid on the surface of the core mold (1).

6. The one-piece forming die for composite material cylinder with embedded metal flange according to claim 5, characterized in that: The core mold (1) has a fixing screw hole (13), and the fixing screw hole (13) is arranged along the radial direction of the core mold (1). There are a plurality of fixing screw holes (13).

7. The one-piece forming die for composite material cylinder with embedded metal flange according to claim 1, characterized in that: The upper plate (2) and the lower plate (3) both have a pressure hole one (14), and the pressure hole one (14) is arranged vertically.

8. The one-piece forming die for composite material cylinder with embedded metal flange according to claim 7, characterized in that: The upper plate (2) and the lower plate (3) both have a first hoisting hole (15), and the first hoisting hole (15) is arranged vertically.

9. The one-piece forming die for composite material cylinder with embedded metal flange according to claim 8, characterized in that: The side plate (4) is provided with a second pressurizing hole (16) and a second hoisting hole (17); the second pressurizing hole (16) is arranged along the radial direction of the core mold (1), and the second hoisting hole (17) is arranged along the vertical direction.

10. The composite material cylinder integral forming mold with embedded metal flange according to claim 1, characterized in that: The upper lining plate (5) and the lower lining plate (6) both have a second fixing screw hole (18), and the upper plate (2) and the lower plate (3) both have a fixing through hole (19), and the positions of the second fixing screw hole (18) and the fixing through hole (19) correspond.

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