Cap-shaped structural part forming method for transforming hand laying tool and tool structure

Abstract

The invention provides a hat-shaped structural part forming method for transforming a hand laying tool and a tool structure. The method comprises the steps that a first check block and a second check block are detachably arranged on the edge of a forming area of the hand laying tool, supporting layers are arranged on a first upper bottom face and a second upper bottom face, air guide materials are arranged on a first inclined face and a second inclined face, and then a material blank is transferred to the supporting layers; sequentially laying an isolating layer and a breathable layer on the blank; separable sealing layers are arranged on the first upper bottom face, the second upper bottom face and the non-forming area of the hand laying tool, thin film layers are arranged on the sealing layers, and a sealing cavity is formed; and after the blank is preheated, the sealed cavity is vacuumized, the vacuum state of the sealed cavity is kept, the blank is treated, and the cap-shaped structural part is obtained. The tool does not need to be manufactured again, automatic forming of the material blank can be achieved only by additionally arranging the check block, the sealing layer and other structures on an existing tool, transformation is easy, cost is low, and production efficiency and product quality are improved.

Description

Technical Field

[0001] The invention relates to the field of composite material forming technology, and in particular to a hat-shaped structural component forming method for modifying hand-laid tooling and a tooling structure. Background Art

[0002] At present, the molding of composite hat-shaped structural parts mainly adopts the manual laying process, which relies on a large amount of manual operation, not only with low production efficiency, but also with poor product consistency. In order to improve production efficiency and product quality, automated molding processes are needed in industrial production. However, the existing hand-laying tooling cannot meet the requirements of automated molding processes, which is mainly reflected in the following aspects: the hand-laying tooling cannot construct a sealed cavity with variable air pressure, and cannot complete the preforming process of sheet blanks; the hand-laying tooling lacks a blank support structure, and it is difficult to ensure that the blank maintains a stable normal pressure preheating environment during the preheating stage; the hand-laying tooling does not have a structure for positioning and fixing the blank, and cannot ensure the position stability of the blank during the preforming process.

[0003] In order to realize automated production, it is usually necessary to redesign and manufacture dedicated automated molding tooling. This practice not only increases a large amount of equipment investment, but also requires large-scale transformation of existing production lines, resulting in a significant increase in production costs. Therefore, it is urgent to explore a simple and feasible tooling transformation solution in industrial production, so that the existing hand-laid tooling can meet the requirements of the automated molding process through partial transformation, thereby realizing the transformation to automated production at low cost. Summary of the invention

[0004] The present invention provides a method for forming a cap-shaped structural part by transforming a hand-laid tool and a tool structure, so as to solve the technical problem in the prior art that the hand-laid tool is not suitable for the automated forming process and the tool needs to be redesigned and manufactured to achieve automated forming.

[0005] To achieve the foregoing objectives, a first aspect of the present invention provides a method for forming a cap-shaped structural member of a modified hand-laying tooling, including: setting a sheet fixing block at the end of the supporting portion of the hand-laying tooling; detachably setting a first stopper and a second stopper at the edge of the forming area of the hand-laying tooling, wherein the vertical cross-section of the first stopper along its length direction is a first right trapezoid, and the first inclined surface where the hypotenuse of the first right trapezoid is located is set to be the side close to the supporting portion; the vertical cross-section of the second stopper along its length direction is a second right trapezoid, and the second inclined surface where the hypotenuse of the second right trapezoid is located is set to be the side close to the supporting portion; the first inclined surface is one surface of the first stopper; the second inclined surface is one surface of the second stopper; setting a support layer on the first upper bottom surface where the upper base of the first right trapezoid is located and the second upper bottom surface where the upper base of the second right trapezoid is located, and the projection of the support layer along the direction perpendicular to the forming area covers the forming area; the first upper bottom surface is one surface of the first stopper; the second upper bottom surface is one surface of the second stopper; setting a first air guiding material on the first inclined surface; setting a second air guiding material on the second inclined surface; setting a first air guiding channel and a second air guiding channel between the support layer at both ends in the length direction of the forming tooling and the hand-laying tooling; transferring the blank to the support layer, and sequentially laying an isolation layer and an air guiding layer on the blank; setting a separable sealing layer on the side of the first upper bottom surface away from the supporting portion, the side of the second upper bottom surface away from the supporting portion, and the non-forming area of the hand-laying tooling; setting a film layer on the sealing layer to form an atmospheric pressure sealing cavity; when the blank reaches the pre-forming temperature, evacuating the sealing cavity, and maintaining the vacuum state of the sealing cavity to process the blank to obtain a cap-shaped structural member. The sealing layer is a sealing strip, and the film layer is a vacuum film.

[0006] Further, a plurality of temperature detection elements are arranged at preset positions, and the preset positions include the side surface of the hand-laying tooling.

[0007] Further, a magnetic fixing member is arranged above the supporting portion of the hand-laying tooling, and the magnetic fixing member is located outside the sealing cavity, and the blank is fixed on the supporting portion by magnetic attraction. Specifically, a vacuum chuck is used to adsorb the blank and transfer the blank to the support layer.

[0008] Further, positioning holes are provided on the blank, and positioning blocks are provided on the hand-laying tooling. After the blank is transferred to the support layer, the positioning blocks are passed through the positioning holes for positioning.

[0009] Specifically, the steps of evacuating the sealed cavity and maintaining the vacuum state of the sealed cavity to process the blank to obtain a cap-shaped structural member include: attaching the sealed cavity to the manual laying tooling, and transferring the manual laying tooling to the forming equipment; connecting a vacuum pumping device to the first air guiding channel and connecting a vacuum measuring device to the second air guiding channel to monitor the vacuum degree of the sealed cavity; controlling the temperature of the blank according to a first preset program, and controlling the vacuum degree of the sealed cavity through the first and second air guiding channels according to the first preset program to obtain a preformed structural member; and curing the preformed structural member according to a second preset program to obtain a formed structural member.

[0010] To achieve the foregoing object, a second aspect of the present invention provides a tooling structure for implementing the method of the first aspect. The tooling structure includes: a tooling body; a first stopper and a second stopper detachably disposed at the edge of the forming area of the tooling body, and the first stopper and the second stopper are symmetrically arranged with the supporting portion of the tooling body as the center. Further, the first stopper and the second stopper are made of an elastic material and are detachably fixed to the tooling body by fasteners. Specifically, the vertical cross-section of the first stopper along its length direction is a first right trapezoid, and the vertical cross-section of the second stopper along its length direction is a second right trapezoid. The hypotenuse of the first right trapezoid is on the first inclined surface closer to the supporting portion, and the hypotenuse of the second right trapezoid is on the second inclined surface closer to the supporting portion; the first inclined surface is a surface of the first stopper; the second inclined surface is a surface of the second stopper.

[0011] By providing a detachable stopper at the edge of the forming area of the manual laying tooling, providing a support layer on the inner side of the upper surface of the stopper, sequentially laying an isolation layer and a breathable layer on the blank, and providing a sealing layer and a film layer on the outer side of the upper surface of the stopper and the non-forming area to form a sealed cavity, the support performance of the manual laying tooling for the blank can be significantly improved, ensuring the stability of the blank under normal pressure and vacuum states, thereby improving the forming quality and production efficiency of the cap-shaped structural member. In addition, the present invention does not require remaking the tooling, and only by adding structures such as stoppers and sealing layers to the existing tooling, the automatic forming of the blank can be realized. The transformation is simple and low-cost, and the transformed tooling can fully meet the current forming process requirements.

[0012] The first stop block and the second stop block are symmetrically arranged with the supporting part of the tooling body as the center, so that the blank can always be kept in a predetermined position during the forming process, effectively avoiding the deviation of the blank; the setting of the sealing layer and the film layer forms a sealing structure to maintain the airtightness of the sealed cavity; the sequential laying of the isolation layer and the breathable layer forms a structure with complementary functions: the isolation layer is in direct contact with the blank, which can prevent the blank from adhering to other layer materials, protect the surface of the blank from damage, and ensure the surface quality after forming; the breathable layer is located above the isolation layer, and its porous structure is conducive to the uniform extraction of gas, avoiding local gas retention, thereby ensuring the uniformity and stability of the vacuum pumping process. The organic combination of the above-mentioned multiple technical features realizes the high-quality and high-efficiency automatic forming of the cap-shaped structural part. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic process flow diagram in an embodiment of the present invention; Figure 2 It is a schematic structural diagram of a manual laying tooling in an embodiment of the present invention; Figure 3 It is a schematic structural diagram of a modified manual laying tooling in an embodiment of the present invention; Figure 4 It is a cross-sectional view of a modified manual laying tooling in an embodiment of the present invention; Figure 5 It is a cross-sectional view of a stop block in an embodiment of the present invention; Figure 6 It is a schematic diagram of a first preset program curve in an embodiment of the present invention; Figure 7 It is a schematic diagram of a second preset program curve in an embodiment of the present invention.

[0014] Wherein: Tooling body 11, supporting part 12, blank fixing block 13, first air guiding channel 14, second air guiding channel 15, first air guiding material 16, second air guiding material 17, first stop block 21, second stop block 22, supporting layer 31, isolation layer 32, breathable layer 33, sealing layer 34, film layer 35, temperature monitoring element 41, magnet 51, blank 61. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] In the description of the present invention, unless otherwise specified, the following terms should be understood as: The "blank" refers to a sheet blank with a predetermined shape formed by laying and cutting a composite material prepreg, and is used for preparing a composite material cap-shaped structural part.

[0016] The "manual laying tooling" refers to a tooling device for manually laying and forming a composite material structural part, including a forming area and a non-forming area, wherein the forming area is used for placing and forming a blank, and the non-forming area is used for setting auxiliary structures.

[0017] The "support layer" can be made of a thin film material. Preferably, it can be made of a polytetrafluoroethylene film, a nylon film, or a polyimide film.

[0018] The "isolation layer" refers to an isolation material used to prevent the blank from adhering to other layer materials, and can be made of a release cloth, a Teflon cloth, a dry strippable cloth, etc.

[0019] The "air guide layer" refers to a breathable material used to ensure the uniformity of vacuum pumping, and can be made of a mesh cloth, a breathable felt, etc.

[0020] The "sealing layer" refers to a sealing structure used to form a sealed area, and specifically can be made of a sealing strip, a sealing gasket, or other materials with a sealing function.

[0021] The "thin film layer" refers to a thin film material used to form a vacuum seal, and specifically can be made of a vacuum film, a silicone film, or other flexible thin film materials with a sealing function.

[0022] The "first air guide material" and the "second air guide material" refer to materials used to conduct the gas directly between the support layer and the tooling body when controlling the vacuum degree of the sealed cavity according to the first preset program. Specifically, they are composed of a breathable felt, a mesh cloth, a gas guide webbing, a breathable fabric, a gas guide felt, a breathable wire mesh, or other materials with good air permeability to fill a tubular vacuum bag. The first air guide material and the second air guide material are arranged inside the first inclined surface and the second inclined surface and outside the blank, which helps to ensure that the gas can be completely discharged between the sealed cavity and the tooling body during the vacuum pumping process, improve the uniformity of the vacuum degree and the vacuum pumping efficiency, and thus ensure the forming quality of the cap-shaped structural part.

[0023] The "first stop block" and the "second stop block" refer to stop block structures arranged at the edge of the tooling forming area for restricting the blank and pasting the "support layer" to support the blank, and can be made of materials such as silicone rubber and engineering plastics.

[0024] A "supporting part" is arranged at the center of the tooling body, and the supporting part is used to support and form the blank. Specifically, the supporting part extends along the length direction of the tooling body, and its cross-section perpendicular to the length direction is in a trapezoidal structure.

[0025] It should be understood that the above specific description of the present invention is only an exemplary illustration to help understand the technical solution of the present invention, and should not be construed as a limitation of the present invention. Those skilled in the art can make various changes or modifications to the present invention without departing from the essence of the present invention, and these changes or modifications all fall within the protection scope of the present invention.

[0026] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. For ease of description, the orientation terms such as "upper", "lower", "front", "rear", "left", and "right" mentioned below are described based on the positional relationship in the accompanying drawings and should not be construed as a limitation to the present invention. In addition, in the description of the present invention, unless otherwise clearly defined, terms such as "set", "connected", and "fixed" should be understood in a broad sense. For example, "set" can be a fixed connection, a detachable connection, or integrally set; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] In the description of the present invention, it should be noted that the terms "first", "second", etc. are only used for distinguishing descriptions and should not be construed as indicating or implying relative importance. Unless otherwise clearly specified and limited, terms such as "installed", "connected", and "connected" 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 directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] In addition, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other. For example, the setting method of the temperature monitoring element in Embodiment 1 can be applied to the tooling structure in Embodiment 2, and the layout method of the vacuum pipeline in Embodiment 2 can also be used in the forming method in Embodiment 1. Those skilled in the art should understand that such combinations of features fall within the protection scope of the present invention.

[0029] The following will describe in detail the specific implementation manners of the present invention with reference to specific embodiments, but these embodiments are only used to help understand the present invention and should not be regarded as a limitation to the present invention.

[0030] Embodiment 1 Refer to Figure 1 , this embodiment provides a forming method for a hat-shaped structural member for modifying a hand-laying tooling, including the following steps: Step S101, refer to Figure 2 , provide a hand-laying tooling, a supporting portion 12 is provided on the tooling body 11 of the hand-laying tooling. Refer to Figure 3 , a sheet fixing block 13 is provided at the end of the supporting portion 12. The sheet fixing block 13 can be fixed on the supporting portion 12 by means of a slot fixing or welding method. The sheet fixing block 13 is used to fix the edge of the blank during the vacuuming process to prevent the blank from shifting or deforming during the forming process. A first stop block 21 and a second stop block 22 are detachably provided at the edge of the forming area of the hand-laying tooling.

[0031] See Figure 5 Figure 5 , in a specific embodiment, the vertical cross-section of the first stop block and the second stop block along their length directions may be a right trapezoidal structure with chamfering treatment. The right trapezoidal structure has an upper base and a lower base, where the width of the upper base is a, the width of the lower base is b, the height is c, and chamfers are provided at all four corners. The hypotenuse of the right trapezoidal structure forms an angle of d° with the tooling body. The inclined plane where the hypotenuse is located is one surface of the first stop block or the second stop block, and is arranged on the side close to the supporting part. The chamfering treatment helps to reduce the stress concentration of the edge of the stop block on the thin film layer 35. The first stop block 21 and the second stop block 22 are detachably fixed to the tooling body 11 through fasteners. In some specific embodiments, the fasteners may be a double-sided adhesive bonding method, a tape bonding method, or a peelable adhesive bonding method. These detachable fixing methods facilitate the modification of the existing manual laying tooling and conveniently restore the original state after use.

[0032] See Figure 4 Figure 4 , a support layer 31 is arranged on the first upper base and the second upper base. The support layer 31 can be pasted on the first stop block 21 and the second stop block 22 using an easy-to-peel tape. The support layer 31 is used to support the blank.

[0033] In a specific embodiment, a first air guiding material is arranged on the first inclined surface of the first stop block, and a second air guiding material is arranged on the second inclined surface of the second stop block. Specifically, the first air guiding material and the second air guiding material can adopt breathable felt, which is placed along the entire length direction of their respective inclined surfaces, and is used to effectively discharge the air between the support layer 31 and the upper surface of the tooling body 11 during the preforming process, ensuring that the gas can be smoothly discharged during the vacuum pumping process, thereby improving the uniformity of the vacuum degree and the vacuum pumping efficiency. The first air guiding material 16 and the second air guiding material 17 can also be fixed to the corresponding inclined surfaces by bonding to prevent displacement during the operation.

[0034] In a specific embodiment, the area of the forming area matches the projected area of the blank. When the blank is transferred to the manual laying tooling, the projection of the blank in the direction perpendicular to the tooling body is completely located within the forming area, and there is an appropriate distance between the edge of the forming area and the projection.

[0035] A support layer 32 is arranged on the first upper base and the second upper base. Further, the support layer 32 is made of a thin film material.

[0036] In a specific embodiment, a first air guide channel 14 and a second air guide channel 15 are provided on both sides of the tooling body 11 along the length direction. The first air guide channel 14 can use a vacuum tube; in this embodiment, the second air guide channel 15 is formed by combining a soft tubular bag and a breathable material. In other embodiments, the second air guide channel 15 can also use a vacuum tube. The first air guide channel 14 and the second air guide channel 15 cooperate to ensure precise control of the vacuum degree.

[0037] In a specific embodiment, a plurality of first air guide channels 14 are provided on both sides of the tooling body 11 along the length direction. The gas in the sealed cavity is pumped out through the first air guide channels 14 to form a vacuum environment in the sealed cavity. It can be understood that the vacuum degree of the vacuum system can be set within a range not higher than -60 kPa.

[0038] Step S102: Transfer the blank to the support layer 31. The transfer of the blank adopts a vacuum adsorption method. Specifically, a vacuum chuck is used to suck the blank, and the negative pressure of the vacuum chuck can be set within the range of -60 kPa to -80 kPa.

[0039] Step S103: Position the blank. Positioning holes are provided on the blank, and positioning blocks are provided on the manual laying tooling. After the blank is transferred to the film layer, the positioning blocks are passed through the positioning holes for positioning. In this embodiment, the diameter of the positioning holes can be set within the range of 8 - 12 mm.

[0040] Step S104: Lay the isolation layer 32 and the breathable layer 33 on the blank in sequence. Specifically, the isolation layer 32 can use release cloth. The breathable layer can use breathable felt.

[0041] It should be noted that the forming area of the manual laying tooling is used to place and form the blank, and the non-forming area is used to set auxiliary structures. When laying the isolation layer 32 and the breathable layer 33, it should be ensured that the entire blank area is covered, and a suitable sealing area is reserved at the edge of the blank to ensure sufficient sealing area.

[0042] Step S105: A separable sealing layer 34 is provided on one side of the first upper bottom surface away from the supporting portion 12, one side of the second upper bottom surface away from the supporting portion 12, and the non-forming area of the manual laying tooling. A film layer 35 is provided on the sealing layer 34 to form a sealed cavity. The sealing layer 34 can use a sealing strip. The film layer 35 can use a vacuum film.

[0043] The magnetic fixing member 51 is located outside the sealed cavity, and the blank is fixed on the supporting portion 12 by magnetic attraction.

[0044] Step S106: Process the sealed cavity and the blank so that the blank is formed into a cap-shaped structural member.

[0045] Keep the sealed cavity attached to the manual laying tooling, and transfer the manual laying tooling to the forming equipment. It can be understood that the manual laying tooling, the attached sealed cavity, and the blank sealed therein are transferred to the forming equipment as a whole. In a specific embodiment, the forming equipment may be a curing furnace, an oven, or an autoclave.

[0046] Further, a plurality of temperature monitoring elements 41 are arranged at preset positions, and the preset positions include the side surface of the manual laying tooling. In a specific embodiment, temperature monitoring element 41 monitoring holes with a diameter of 2 mm and a depth of 20 mm can be drilled on the side surface of the tooling body 11 to monitor the temperature of the manual laying tooling.

[0047] In a specific embodiment, referring to Figure 6 , the first preset program includes three main stages: The first stage: The autoclave is heated to raise the monitored temperature from the ambient temperature to above 45°C. At this time, the viscosity of the resin matrix in the blank decreases, resulting in a decrease in the overall rigidity of the blank, thereby reducing the interlayer slip resistance between the plies. The second stage: When the temperature reaches above 45°C, maintain this temperature state for no less than 5 minutes. At the same time, start the negative pressure equipment, evacuate the sealed cavity to no higher than -60 kPa through the first air guide channel 14 and monitor the vacuum degree through the second air guide channel 15. During this process, since the air pressure in the sealed cavity decreases from atmospheric pressure to negative pressure, the film layer extends and applies a uniform pressure to the blank, causing the sealing layer to separate from the tooling body, and the blank is pressed against the supporting part of the tooling body along the edge of the supporting layer. Maintain a constant temperature and constant vacuum degree state for no less than 10 minutes to ensure that the blank fully conforms to the shape of the tooling and forms a preformed structural member. The third stage: Terminate the heating and lower the temperature to no higher than 45°C to complete the preforming process. It should be noted that no additional pressure needs to be applied outside the film layer during the entire preforming process, and the subsequent curing process does not require transferring the preformed structural member to other tooling or remaking the sealed cavity.

[0048] Referring to Figure 7 , the second preset program is the curing program of the preformed structural member, and its specific temperature-time parameters are set according to the recommended curing process of the prepreg used. During this process, the resin matrix in the preformed structural member undergoes a cross-linking reaction with the curing agent to finally form a formed structural member with a stable geometric shape and mechanical properties.

[0049] By adopting the above method, this embodiment realizes a simple transformation based on the existing manual laying tooling. By adding structures such as detachable stoppers and sealing layers, the tooling can meet the requirements of the automated forming process. At the same time, the methods of vacuum adsorption transfer and positioning hole positioning ensure the integrity and position accuracy of the blank. The setting of temperature monitoring elements and vacuum pipelines ensures the controllability of the forming process, effectively improving the product quality and production efficiency.

[0050] Embodiment Two Refer to Figure 4 , this embodiment provides a manual laying tooling, including: a tooling body 11, a first stopper 21 and a second stopper 22 detachably arranged at the edge of the forming area of the tooling body 11.

[0051] Refer to Figure 4 and Figure 5 , the first stopper 21 and the second stopper 22 extend upward along both ends of the tooling body 11 to form a right trapezoidal surface structure. The inclined surface of the right trapezoid forms an angle greater than 90° with the tooling body 11, and is used to support both sides of the blank 61 and guide the blank 61 to move downward during the forming process. The surface of the forming area of the tooling body 11 is a curved surface adapted to the designed shape of the hat-shaped structural member, and is used to provide support and forming reference for the blank 61 during the forming process.

[0052] Refer to Figure 5 , in a specific embodiment, the vertical cross-section of the first stopper and the second stopper along their length directions can be a right trapezoidal structure with chamfering treatment. The right trapezoidal structure has an upper base and a lower base, where the width of the upper base is a, the width of the lower base is b, the height is c, and chamfers are provided at all four corners. The hypotenuse of the right trapezoidal structure forms an angle d° with the tooling body. The inclined surface where the hypotenuse is located is one surface of the first stopper or the second stopper, and is arranged on the side close to the supporting part. The chamfering treatment helps to reduce the stress concentration of the stopper edge on the blank. The first stopper 21 and the second stopper 22 are detachably fixed to the tooling body 11 by fasteners. In some specific embodiments, the fasteners can be a double-sided adhesive bonding fixation method, a tape bonding fixation method, or a peelable adhesive bonding fixation method.

[0053] In a specific implementation manner, a cutting reference line (not shown in the figure) is provided on the upper surface of the tooling body 11. The cutting reference line is designed according to the contour of the blank 61 and is used for cutting reference after the hat-shaped structural member is cured and formed.

[0054] It should be noted that the above embodiments are only the preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereto. Under the basic concept of the present invention, various equivalent replacements and improvements made by those of ordinary skill in the art to the technical solutions of the present invention shall fall within the protection scope of the present invention. For example, the specific shapes and sizes of the "first stopper" and the "second stopper" can be adjusted according to actual needs; other materials with the same functions can be used for the "sealing layer" and the "film layer"; the number and arrangement positions of the "temperature monitoring elements" can be optimized according to the tooling size; there can be various specific implementation forms for the connection methods and arrangement schemes of the "vacuum pipelines".

[0055] In particular, those skilled in the art can also make adaptive improvements to the structural design of the tooling without departing from the principles and essence of the present invention. For example: the specific structure of the stopper can be adjusted according to the characteristics of different cap-shaped structural parts; other functional structures can be added according to actual production requirements; the relative position relationships of various components can be adjusted according to process requirements, etc. These improvements and optimizations based on the technical solutions of the present invention shall be regarded as within the protection scope of the present invention.

[0056] In addition, the parts not described in detail in the present invention belong to the common general knowledge of those skilled in the art, such as: specific material selection criteria, precise control methods of process parameters, equipment operation procedures, etc. Those skilled in the art can make reasonable settings in combination with actual needs and production conditions, and the use of these technical means should not affect the protection scope of the present invention either.

[0057] Therefore, the protection scope of the present invention shall be subject to the appended claims, and any equivalent transformation or equivalent substitution made within the scope of the claims of the present invention shall be included within the protection scope of the present invention.

Claims

1. A method for forming a hat-shaped structural part by modifying a hand-laid tool, characterized in that: The following steps are involved: A sheet fixing block is provided at the end of the supporting portion of the hand-laid tooling; A first stopper and a second stopper are detachably provided at the edge of the forming area of ​​the hand-laid tooling; The vertical cross section of the first stopper along its length direction is a first right-angled trapezoid, and the first inclined surface where the hypotenuse of the first right-angled trapezoid is located is arranged to be close to the side of the supporting portion; The vertical cross section of the second stopper along its length direction is a second right-angled trapezoid, and the second inclined surface where the hypotenuse of the second right-angled trapezoid is located is arranged to be close to the side of the supporting portion; The first inclined surface is a surface of the first stopper; The second inclined surface is a surface of the second stopper; A support layer is provided on a first upper bottom surface where the upper bottom of the first right-angled trapezoid is located and a second upper bottom surface where the upper bottom of the second right-angled trapezoid is located, wherein a projection of the support layer along a direction perpendicular to the molding area covers the molding area; The first upper bottom surface is a surface of the first stopper; The second upper bottom surface is a surface of the second stopper; Disposing a first gas-conducting material on the first inclined surface; Disposing a second gas-conducting material on the second inclined surface; A first air guide channel and a second air guide channel are provided between the support layer at both ends of the molding tool in the length direction and the hand-laying tool; Transferring the embryo to the support layer; sequentially laying an isolation layer and an air guide layer on the blank; A separable sealing layer is provided on a side of the first upper bottom surface away from the supporting portion, a side of the second upper bottom surface away from the supporting portion, and a non-molding area of ​​the hand-laid tooling; Disposing a film layer on the sealing layer to form a sealing cavity; Preheat the blank and tooling to a specified temperature through a heating device; The sealed cavity is evacuated, and the sealed cavity is maintained in a vacuum state to process the blank to obtain a cap-shaped structural part.

2. The method according to claim 1, characterized in that Also includes: A plurality of temperature detection elements are arranged at preset positions, and the preset positions include sides of the hand-laid tooling.

3. The method according to claim 1, characterized in that: The sealing layer is a sealing strip; The thin film layer is a vacuum film.

4. The method according to claim 1, characterized in that: Also includes: A magnetic fixing part is arranged above the supporting part of the hand-laid tooling, and the magnetic fixing part is located outside the sealed cavity, and the blank is fixed on the supporting part by magnetic attraction.

5. The method according to claim 1, characterized in that The blank is sucked by a vacuum suction cup and transferred to the support layer.

6. The method according to claim 1, characterized in that The blank is provided with a positioning hole, and the hand-laid tool is provided with a positioning block. After the blank is transferred to the support layer, the positioning block is passed through the positioning hole for positioning.

7. The method according to claim 1, characterized in that The step of evacuating the sealed cavity and maintaining the sealed cavity in a vacuum state to process the blank to obtain a cap-shaped structural member comprises: Keeping the sealed cavity attached to the hand-laid tooling, transferring the hand-laid tooling to a molding device; Connecting a vacuum pump to the first air channel; The temperature of the blank is controlled according to a first preset program, the vacuum degree of the sealed cavity is controlled through the first air guide channel according to the first preset program, and the vacuum degree of the sealed cavity is monitored through the second air guide channel to obtain a preformed structural part; The preformed structural component is cured according to a second preset procedure to obtain a formed structural component.

8. A tooling structure for implementing the method according to claims 1-7, characterized in that: include: Tool body; A first stopper and a second stopper are detachably arranged at the edge of the molding area of ​​the tool body, and the first stopper and the second stopper are symmetrically arranged with respect to the supporting portion of the tool body.

9. The tooling structure according to claim 8, characterized in that: The first stopper and the second stopper are made of elastic material and are detachably fixed to the tool body by fasteners.

10. The tooling structure according to claim 8, characterized in that: The vertical cross-section of the first stopper along its length direction is a first right-angled trapezoid, and the vertical cross-section of the second stopper along its length direction is a second right-angled trapezoid. The first inclined surface where the hypotenuse of the first right-angled trapezoid is located is close to one side of the supporting part, and the second inclined surface where the hypotenuse of the second right-angled trapezoid is located is close to one side of the supporting part; the first inclined surface is a face of the first stopper; and the second inclined surface is a face of the second stopper.

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