Structural part forming device and forming preparation method

Abstract

The invention provides a structural part forming device and a forming preparation method, and relates to the technical field of part manufacturing. Comprising a supporting base, a forming panel, a forming cavity, a diaphragm, a heating assembly and a negative pressure assembly. An opening is formed in one end of the forming cavity; the supporting seat is arranged in the forming cavity; the forming panel is arranged on the supporting seat and is used for placing a material sheet; the diaphragm is arranged on the forming cavity and seals the opening, so that the forming cavity forms a sealed space; the heating assembly is arranged corresponding to the diaphragm and is used for heating the sealed space; the negative pressure assembly is arranged on the forming cavity and used for vacuumizing the sealed space. Heat dissipation in the material sheet forming stage can be effectively reduced, the temperature uniformity of thermal deformation and slippage of the material sheets is improved, and therefore slippage between material sheet layers is more uniform and smoother, and wrinkles are avoided.

Description

Technical Field

[0001] The present application relates to the technical field of parts manufacturing, and in particular to a structural part forming device and a forming preparation method. Background Art

[0002] In the process of structural parts forming, the laid composite material sheet is generally pressed against the mold by heating and vacuuming the high-extension diaphragm or mold to form it into the mold shape, that is, the preform. For thicker laminates and composite parts with complex surface structures, such as large-sized C-beams with variable thickness, variable curvature, variable cross-section and local depression of the edge strip area, when the male mold hot diaphragm is used for forming, the male R corner area of ​​the part is prone to out-of-plane wrinkle defects.

[0003] Existing molding equipment usually preheats the molding mold first. When the composite material sheet is placed on the heated mold surface, it will soften quickly, causing the sheet to bend before the hot diaphragm heating and vacuum molding. This bending will form wrinkles at the R corner in advance, affecting the molding quality. This type of wrinkle will remain in the laminate in the form of fiber buckling after the part is cured, affecting the service mechanical properties of the part. In severe cases, it will cause the part to fail and be scrapped. Summary of the invention

[0004] The present application mainly provides a structural component forming device and a forming preparation method, which are used to solve technical problems such as wrinkles at the R corners of material sheets.

[0005] The technical solution adopted by this application to solve the above technical problems is: The present application provides a structural part forming device including a support seat, a forming panel, a forming cavity, a diaphragm, a heating component and a negative pressure component; the forming cavity has an opening at one end; the support seat is arranged in the forming cavity; the forming panel is arranged on the support seat for placing a sheet; the diaphragm is arranged on the forming cavity and closes the opening so that the forming cavity forms a sealed space; the heating component is arranged corresponding to the diaphragm for heating the sealed space; the negative pressure component is arranged on the forming cavity for evacuating the sealed space.

[0006] Optionally, a first end positioning hole, a second end positioning hole and a middle positioning hole are provided on the molding panel; the first end positioning hole and the second end positioning hole are located at both ends of the molding panel, and the middle positioning hole is located between the first end positioning hole and the second end positioning hole, and the first end positioning hole, the second end positioning hole and the middle positioning hole are used to position the sheet.

[0007] Optionally, it also includes a first end limiter, a second end limiter and a middle limiter; when the sheet is placed on the forming panel, the first end limiter is passed through the first end through hole on the sheet and is arranged in the first end positioning hole, the second end limiter is passed through the second end through hole on the sheet and is arranged in the second end positioning hole, and the middle limiter is passed through the middle through hole on the sheet and is arranged in the middle positioning hole, so as to fix the sheet.

[0008] Optionally, it also includes a first end stop and a second end stop; the first end stop and the second end stop are arranged at both ends of the support seat, the forming panel is located between the first end stop and the second end stop, and the two ends of the forming panel are respectively connected to the first end stop and the second end stop.

[0009] Optionally, a temperature sensor is also included, and the temperature sensor is used to detect the temperature of the sheet on the molding panel.

[0010] Optionally, the thermal conductivity of the molded panel is less than 1 W / (m•K).

[0011] Optionally, the elongation at break of the diaphragm is greater than or equal to 600%.

[0012] The present application also provides a preparation method for structural part molding, which is applied to the aforementioned structural part molding device, and the preparation method includes: S10: laying the sheet onto the molding panel; S20: turning on the heating component to heat the sealed space; S30: the negative pressure component evacuates the sealed space so that the diaphragm presses down the edge of the sheet to fit it to the side of the molding panel for molding; S40: turning off the heating component to cool the sheet after molding, thereby completing the sheet molding.

[0013] Optionally, the structural member forming device also includes a first end positioning hole, a second end positioning hole, a middle positioning hole, a first end limiter, a second end limiter and a middle limiter; the S10 specifically includes: S11: the first end through hole on the sheet corresponds to the first end positioning hole; S12: the second end through hole on the sheet corresponds to the second end positioning hole; S13: the middle through hole on the sheet corresponds to the middle positioning hole; S14: inserting the first end limiter into the first end positioning hole; S15: inserting the second end limiter into the second end positioning hole to limit the sheet; S16: inserting the middle limiter into the middle positioning hole to fix the sheet.

[0014] Optionally, the structural component forming device further includes, and the S30 further includes the following steps: S31: using the temperature sensor to detect the temperature of the sheet; S32: when the temperature of the sheet reaches a preset temperature, the negative pressure component evacuates the sealed space.

[0015] The present application provides a structural component molding device and a molding preparation method, wherein a diaphragm is provided on the molding cavity to close the opening to form a sealed space, and a heating component heats the sealed space, thereby further making the heating temperature of the sheet and the molding panel uniform, preventing wrinkles from being generated in the bending area of ​​the sheet when the diaphragm is pressed down, thereby ensuring the mechanical properties of the structural component during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 This is a cross-sectional view of the structural component forming device of the present application before vacuuming; Figure 2 This is one of the cross-sectional views of the structural component forming device of the present application after vacuuming; Figure 3 This is the second cross-sectional view of the structural component forming device of the present application after vacuuming; Figure 4 This is a schematic diagram of the coordination of the support seat, the forming panel and the sheet of material in this application; Figure 5 The figure is a schematic diagram of the process of the preparation method for forming the structural parts of the present application.

[0018] Icons: 10-support seat; 11-first end stopper; 12-second end stopper; 20-molding panel; 21-first end positioning hole; 22-second end positioning hole; 23-middle positioning hole; 30-molding cavity; 40-diaphragm; 50-heating component; 60-negative pressure component; 70-sheet.

[0019] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0021] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0022] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" 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, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0023] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0024] Existing molding equipment usually preheats the molding mold first. When the composite material sheet is placed on the heated mold surface, it will soften quickly, causing the sheet to bend before the hot diaphragm is heated and vacuumed to form. This bending will form wrinkles at the R corner in advance, affecting the molding quality. This type of wrinkle will remain in the laminate in the form of fiber buckling after the part is solidified, affecting the service mechanical properties of the part, and in severe cases causing the part to fail and be scrapped. In response to the above problems, the embodiments of the present application provide the following technical solutions to overcome the above problems.

[0025] Please refer to Figures 1 to 4 The embodiment of the present application provides a structural part molding device including a support seat 10, a molding panel 20, a molding cavity 30, a diaphragm 40, a heating component 50 and a negative pressure component 60; the molding cavity 30 has an opening at one end; the support seat 10 is arranged in the molding cavity 30; the molding panel 20 is arranged on the support seat 10 for placing a sheet 70; the diaphragm 40 is arranged on the molding cavity 30 and closes the opening so that the molding cavity 30 forms a sealed space; the heating component 50 is arranged corresponding to the diaphragm 40 for heating the sealed space; the negative pressure component 60 is arranged on the molding cavity 30 for evacuating the sealed space.

[0026] Specifically, the support seat 10 is arranged in the molding cavity 30 as a basic structure for carrying the molding panel 20. The high-strength support seat 10 can provide a good support effect for the molding panel 20, ensuring that the structure between the support seat 10 and the molding panel 20 is stable after long-term use of the structural component molding device. The molding panel 20 is the working surface for placing the tablet 70, where the tablet 70 will be heated and molded, and the arrangement of the molding panel 20 effectively reduces the heat dissipation of the tablet 70 during the molding stage, and improves the temperature uniformity of the thermal deformation and sliding of the tablet 70. The molding cavity 30 is a chamber for loading the support seat 10, the molding panel 20 and the tablet 70, and has an opening at one end to facilitate the placement and removal of the support seat 10, the molding panel 20 and the tablet 70.

[0027] The diaphragm 40 is disposed on the molding cavity 30 and closes the opening to form a sealed space. After being heated, the diaphragm 40 transfers heat to the material sheet 70 by heat conduction, and the material sheet 70 becomes soft and can be pressed against the molding panel 20 during vacuuming, ensuring that the material sheet 70 and the molding panel 20 are closely attached.

[0028] The heating assembly 50 is arranged corresponding to the diaphragm 40 and is used to heat the sealed space. By heating, the material sheet 70 can be softened to facilitate molding.

[0029] The negative pressure assembly 60 is disposed on the molding cavity 30 and is used to evacuate the sealed space. The evacuation will cause the diaphragm 40 to be pressed downward, further pressing the material sheet 70 toward the side of the molding panel 20, thereby achieving molding of the material sheet 70.

[0030] During use, the sheet 70 is placed on the molding panel 20, the diaphragm 40 closes the opening on the molding cavity 30, and then the heating component 50 is started to heat the sealed space to make the temperature of the sheet 70 and the molding panel 20 uniform, and the negative pressure component 60 evacuates the sealed space to press the diaphragm 40 downward and further press the sheet 70 toward the side of the molding panel 20 to achieve the molding of the sheet 70.

[0031] It should be noted that for large-sized and complex-shaped beams and frame-type structural parts, the following can be used: Figure 2 For beams and frame structures with small size and simple profile, the following can be used: Figure 3 The thinner profiled panel 20.

[0032] The present application provides a structural component forming device, which forms a sealed space by arranging a diaphragm 40 on the forming cavity 30 to close the opening, and enables the heating component 50 to heat the sealed space, further making the heating temperature of the sheet 70 and the forming panel 20 uniform, and further arranging the forming panel 20 on the support seat 10 to reduce the heat dissipation of the sheet 70 in the forming stage, and improve the temperature uniformity of the sheet when it is heated, deformed and slipped, so that the interlayer sliding of the sheet is more uniform and smooth, and prevents the R angle of the sheet 70 from wrinkling when the diaphragm 40 is pressed down, thereby ensuring the mechanical properties of the structural component during use and improving the quality of the structural component, and by precisely controlling the heating and vacuuming process, it can ensure that the sheet 70 is evenly attached to the forming panel 20 to achieve precise molding, and by controlling the intensity and time of heating and vacuuming, it can reduce wrinkles and defects of the sheet 70 during the molding process and improve the quality of the molded component.

[0033] In the embodiment of the present application, a first end positioning hole 21, a second end positioning hole 22 and a middle positioning hole 23 are provided on the molding panel 20; the first end positioning hole 21 and the second end positioning hole 22 are located at both ends of the molding panel 20, and the middle positioning hole 23 is located between the first end positioning hole 21 and the second end positioning hole 22. The first end positioning hole 21, the second end positioning hole 22 and the middle positioning hole 23 are used to position the sheet 70.

[0034] Specifically, three positioning holes are provided on the molding panel 20, namely, the first end positioning hole 21, the second end positioning hole 22 and the middle positioning hole 23. These positioning holes are used to position the sheet 70 to ensure that the sheet 70 is placed in the correct position on the molding panel 20. The first end positioning hole 21 and the second end positioning hole 22 are located at both ends of the molding panel 20, while the middle positioning hole 23 is located therebetween. This distribution helps to provide uniform support and positioning over the entire length of the sheet 70. The sheet 70 corresponds to the first end positioning hole 21, the second end positioning hole 22 and the middle positioning hole 23 on the molding panel 20 through the first end through hole, the second end through hole and the middle through hole thereon, so that the sheet 70 can be accurately placed on the molding panel 20, ensuring the accuracy of the position of the sheet 70 during the heating process.

[0035] In this embodiment, by providing the first end positioning hole 21, the second end positioning hole 22 and the middle positioning hole 23 on the forming panel 20, the sheet 70 can be accurately positioned to ensure that the sheet 70 is accurately positioned when the sheet 70 is heated during the forming process, thereby improving the subsequent forming accuracy. The design of the first end positioning hole 21, the second end positioning hole 22 and the middle positioning hole 23 ensures that the position of the sheet 70 remains consistent each time the forming is performed, which is crucial to ensure the consistency and repeatability of the formed structural parts. Since the positioning of the sheet 70 is more accurate and faster, the preparation time before forming can be shortened and the overall production efficiency can be improved. The operator only needs to align the through hole of the sheet 70 with the positioning hole to quickly position the sheet 70, which simplifies the operation process.

[0036] In the embodiment of the present application, it also includes a first end limiter, a second end limiter and a middle limiter; when the sheet 70 is placed on the forming panel 20, the first end limiter is passed through the first end through hole on the sheet 70 and is arranged in the first end positioning hole 21, the second end limiter is passed through the second end through hole on the sheet 70 and is arranged in the second end positioning hole 22, and the middle limiter is passed through the middle through hole on the sheet 70 and is arranged in the middle positioning hole 23, for fixing the sheet 70.

[0037] Specifically, the first end stopper, the second end stopper and the middle stopper are respectively passed through the corresponding first end through hole, the second end through hole and the middle through hole on the sheet 70 and are arranged in the first end positioning hole 21, the second end positioning hole 22 and the middle positioning hole 23 on the forming panel 20. This matching method can ensure that the position of the sheet 70 on the forming panel 20 is fixed to prevent displacement during the forming process. The first end stopper, the second end stopper and the middle stopper pass through the corresponding through holes on the sheet 70 and are inserted into the corresponding positioning holes, thereby fixing the sheet 70. This fixing method not only limits the movement of the sheet 70, but also limits the rotation of the sheet 70, ensuring that the sheet 70 maintains the correct direction and position during the forming process.

[0038] It is understandable that the use of the first end stopper, the second end stopper and the middle stopper ensures the precise positioning of the sheet 70 during the molding process, thereby improving the accuracy of the molded part. During the heating and vacuuming process, the sheet 70 may be displaced due to changes in pressure and temperature. The use of the first end stopper, the second end stopper and the middle stopper can effectively prevent such displacement and ensure that the sheet 70 always remains in the correct position. Accurate positioning and fixation can reduce wrinkles and defects during the molding process and improve the quality of the molded part. Since the positioning and fixation of the sheet 70 are faster and more accurate, the preparation time before molding can be shortened and production efficiency can be improved. The use of the first end stopper, the second end stopper and the middle stopper simplifies the fixing process of the sheet 70 and reduces the difficulty of operation for the operator. The fixation of the sheet 70 is more secure, reducing the safety risks caused by the movement or rotation of the sheet 70 during the molding process.

[0039] Furthermore, in the present embodiment, the first end stopper, the second end stopper and the middle stopper are preferably rivets. The rivet not only plays a fixing role, but also acts as a stopper. The rivet is inserted into the positioning hole of the forming panel 20 through the through hole on the sheet 70, and the movement and rotation of the sheet 70 are limited by the contact between the head and tail of the rivet and the sheet 70 and the forming panel 20 respectively. The rivet uses its own deformation or interference to connect the riveted sheet 70 and the forming panel 20. This characteristic enables it to firmly limit the position of the sheet 70 after passing through the through hole of the sheet 70 and being fixed in the positioning hole of the forming panel 20, preventing displacement during the forming process. The use of rivets can effectively prevent the displacement of the sheet 70 during the heating and vacuuming process, and ensure the forming accuracy. The rivet can be installed quickly, and once the limit is completed, no additional fixation or adjustment is required, which helps to improve production efficiency.

[0040] In the embodiment of the present application, the material of the first end limiter, the second end limiter and the middle limiter can be high-strength and self-lubricating materials such as polytetrafluoroethylene, nylon, ultra-high molecular weight polyethylene, and polyetheretherketone.

[0041] In the embodiment of the present application, it also includes a first end stopper 11 and a second end stopper 12; the first end stopper 11 and the second end stopper 12 are arranged at both ends of the support seat 10, the forming panel 20 is located between the first end stopper 11 and the second end stopper 12, and the first end stopper 11 and the second end stopper 12 are connected to each other at both ends of the forming panel 20.

[0042] Specifically, the first end stopper 11 and the second end stopper 12 are respectively arranged at both ends of the support seat 10, and the first end stopper 11 and the second end stopper 12 are respectively connected to both ends of the forming panel 20. This layout can prevent the diaphragm 40 from bridging and deforming and breaking when it is pressed down.

[0043] It can be understood that in this embodiment, the first end stopper 11 and the second end stopper 12 are preferably wedge-shaped.

[0044] In the embodiment of the present application, a temperature sensor is further included, and the temperature sensor is used to detect the temperature of the material sheet 70 on the forming panel 20.

[0045] Specifically, the temperature sensor detects temperature through changes in physical parameters. Common types of temperature sensors include thermocouples, thermistors (NTC / PTC), resistance temperature detectors (RTDs), etc., which can measure temperature based on different principles such as thermoelectric effect, resistance effect, thermistor effect, etc. In this embodiment, a non-contact temperature sensor (such as an infrared sensor) is preferred, which can measure temperature over a long distance and is suitable for environments that are difficult to access or high-temperature areas.

[0046] It is understandable that the temperature sensor can accurately measure the temperature of the sheet 70 on the forming panel 20, ensure that the forming process is carried out at the optimal temperature, and improve the forming quality. By monitoring the temperature in real time, the heating and forming process can be optimized to improve efficiency and output. The temperature sensor can prevent overheating, reduce the risk of equipment damage and material waste, and improve production safety. It should be noted that in this embodiment, there is no specific restriction on the position of the temperature sensor, which only needs to detect the temperature of the sheet 70.

[0047] In the embodiment of the present application, the thermal conductivity of the molded panel 20 is less than 1 W / (m•K).

[0048] Specifically, when the thermal conductivity of the molding panel 20 is less than 1W / (m•K), it means that the heat transfer rate through the molding panel 20 is slow. This helps to control the temperature of the molding panel 20 and prevent heat from being lost too quickly from the sheet 70. Materials with low thermal conductivity usually have higher thermal resistance, which means that they can slow the flow of heat, thereby maintaining the temperature of the sheet 70 during the molding process and avoiding overheating or overcooling. The material of the molding panel 20 can be selected from materials with low thermal conductivity such as fiber-reinforced resin-based composite materials, plastics, wood substitutes, and wood. The molding panel 20 with low thermal conductivity helps to more accurately control the temperature of the sheet 70, especially during the heating and curing process, which is crucial to ensure the quality of the molded parts. Due to the slow heat transfer, the molding panel 20 with low thermal conductivity can reduce the thermal stress caused by rapid temperature changes, thereby reducing the risk of deformation or cracking of the sheet 70. During the heating process, the molding panel 20 with low thermal conductivity can reduce heat loss and improve energy efficiency.

[0049] In the embodiment of the present application, the elongation at break of the diaphragm 40 is greater than or equal to 600%.

[0050] Specifically, the diaphragm 40 with high elongation at break usually has good flexibility, so that during the molding process, the diaphragm 40 can not break under large deformation, so as to better fit the shape of the mold and improve the accuracy of the molded part. In this embodiment, the material of the diaphragm 40 can be selected from silicone polymer, polysiloxane polymer, silicone rubber material, high elongation nylon vacuum bag film, etc.

[0051] It is understandable that the diaphragm 40 with high elongation at break can better adapt to the shape of the mold and improve the accuracy and surface quality of the molded part. The high elongation at break means that the diaphragm 40 is less likely to break during the molding process, thereby improving the durability and service life of the diaphragm 40. Due to the improved durability of the diaphragm 40, the material waste caused by damage to the diaphragm 40 is reduced. During the molding process, if the diaphragm 40 suddenly breaks, it may cause a safety accident. The diaphragm 40 with high elongation at break reduces this risk due to its higher strength and toughness.

[0052] Please refer to Figure 1 , Figure 2 , Figure 4 and Figure 5 ; The embodiment of the present application also provides a preparation method for structural part molding, which is applied to the aforementioned structural part molding device, and the preparation method includes: S10: laying the sheet 70 on the molding panel 20; S20: turning on the heating component 50 to heat the sealed space; S30: the negative pressure component 60 evacuates the sealed space so that the diaphragm 40 presses down the edge of the sheet 70 to fit the side of the molding panel 20 for molding; S40: turning off the heating component 50, cooling the sheet 70 after molding, and completing the molding of the sheet 70.

[0053] Specifically, S10: the material sheet 70 is laid on the forming panel 20: The first step of the molding process is to lay the sheet 70 on the molding panel 20. The sheet 70 is usually a prepreg laminate to facilitate curing and molding. This step ensures that the sheet 70 is correctly placed and lays the foundation for subsequent heating and curing.

[0054] S20: Turn on the heating component 50 to heat the sealed space: The opening of the heating assembly 50 causes the temperature in the sealed space to rise, and the material sheet 70 begins to soften after being heated, providing necessary heat energy for subsequent molding.

[0055] S30: The negative pressure assembly 60 is evacuated, and the diaphragm 40 presses down the sheet 70: Through the vacuum of the negative pressure assembly 60, the diaphragm 40 will be pulled toward the forming panel 20, compacting the material sheet 70 so that it closely fits the shape of the forming panel 20. This step is the key to transforming the material sheet 70 from a planar state to a three-dimensional structure.

[0056] S40: Turn off the heating component 50 to cool down the formed sheet 70: After the sheet 70 is compacted and attached to the molded panel 20, the heating assembly 50 is turned off to cool the sheet 70 in the mold and solidify. The cooling process is to control the curing reaction speed and ensure that the sheet 70 maintains the molded shape.

[0057] In this embodiment, the heating and vacuuming steps significantly improve the molding efficiency and shorten the production cycle. The precise control of the laying and curing process of the sheet 70 reduces the waste of materials and improves the material utilization rate.

[0058] In an embodiment of the present application, the structural member forming device also includes a first end positioning hole 21, a second end positioning hole 22, a middle positioning hole 23, a first end limiter, a second end limiter and a middle limiter; the S10 specifically includes: S11: the first end through hole on the sheet 70 corresponds to the first end positioning hole 21; S12: the second end through hole on the sheet 70 corresponds to the second end positioning hole 22; S13: the middle through hole on the sheet 70 corresponds to the middle positioning hole 23; S14: inserting the first end limiter into the first end positioning hole 21; S15: inserting the second end limiter into the second end positioning hole 22 to limit the sheet 70; S16: inserting the middle limiter into the middle positioning hole 23 to fix the sheet 70.

[0059] Specifically, S11: the first end through hole on the material piece 70 corresponds to the first end positioning hole 21 on the forming panel 20. This step ensures the accurate position of one end of the material piece 70, laying a foundation for subsequent fixation.

[0060] S12: The second end through hole on the material sheet 70 corresponds to the second end positioning hole 22 on the molding panel 20. This is similar to the positioning of the first end, ensuring the accurate position of the other end of the material sheet 70.

[0061] S13: The middle through hole on the material sheet 70 corresponds to the middle positioning hole 23 on the molded panel 20. This step ensures the precise position of the middle of the material sheet 70 and provides additional stability for the material sheet 70.

[0062] The above-mentioned method is used for positioning the sheet 70 .

[0063] S14: The first end stopper is inserted into the first end positioning hole 21 and passes through the first end through hole of the sheet 70 to limit the movement of the sheet 70 at this end.

[0064] S15: The second end stopper is inserted into the second end positioning hole 22 and passes through the second end through hole of the sheet 70 to limit the movement of the sheet 70 at the other end.

[0065] S16: The middle limiting member is inserted into the middle positioning hole 23 and passes through the middle through hole of the sheet 70 to fix the middle position of the sheet 70 to prevent the sheet 70 from shifting during the molding process.

[0066] The above method is used to limit and fix the material sheet 70.

[0067] It is understandable that the accurate positioning of the sheet 70 on the molding panel 20 is ensured by the precise hole correspondence and the use of the stoppers, which is crucial to the subsequent molding quality. The use of the first end stopper, the second end stopper and the middle stopper not only limits the movement of the sheet 70, but also provides additional stability, especially during the molding process, the sheet 70 may be affected by pressure and temperature changes. Precise positioning and fixation reduce the displacement and wrinkles of the sheet 70 during the molding process, thereby reducing molding defects and improving the overall quality of the molded part.

[0068] In the embodiment of the present application, the structural component forming device further includes, and the S30 further includes the following steps: S31: using the temperature sensor to detect the temperature of the sheet 70; S32: when the temperature of the sheet 70 reaches a preset temperature, the negative pressure component 60 evacuates the sealed space.

[0069] Specifically, S31: using the temperature sensor to detect the temperature of the sheet 70: the temperature sensor is used to monitor the temperature of the sheet 70 in real time to ensure that the sheet 70 reaches the required temperature conditions during the molding process. This step is crucial because the molding characteristics of the material are often closely related to the temperature. Temperature sensors (such as thermocouples, thermistors, etc.) detect temperature through changes in physical parameters. For example, thermocouples generate a voltage signal proportional to the temperature difference through the thermoelectric effect, while the resistance value of the thermistor changes with temperature.

[0070] S32: When the temperature of the sheet 70 reaches the preset temperature, the negative pressure component 60 evacuates the sealed space: When the temperature of the sheet 70 reaches the preset temperature, the negative pressure component 60 starts to work and evacuates the sealed space. This step reduces the air pressure in the sealed space so that the diaphragm 40 presses down the sheet 70, making it more closely fit the molding panel 20. The negative pressure component 60 is composed of a vacuum pump, a pipeline, a control device, etc. When the vacuum pump is running, the air in the sealed space is extracted to form a negative pressure environment. When the temperature of the sheet 70 is appropriate, the negative pressure causes the air between the diaphragm 40 and the sheet 70 to be extracted, thereby pushing the diaphragm 40 to press down the sheet 70.

[0071] It is understandable that by real-time monitoring of the temperature of the sheet 70, it is possible to ensure that the sheet 70 is molded at the optimal temperature and improve the molding quality. Negative pressure vacuuming ensures that the sheet 70 is closely fitted to the molding panel 20, reduces molding time, and improves production efficiency. Accurate temperature control and negative pressure vacuuming reduce material waste caused by improper temperature or insufficient pressure. Negative pressure vacuuming helps to reduce bubbles and wrinkles in the sheet 70 and improve the surface quality and physical properties of the molded part.

[0072] The above is only a specific implementation of the embodiment of the present application, but the protection scope of the embodiment of the present application is not limited thereto, and any changes or replacements within the technical scope disclosed in the embodiment of the present application should be included in the protection scope of the embodiment of the present application. Therefore, the protection scope of the embodiment of the present application should be based on the protection scope of the claims.

Claims

1. A structural component forming device, characterized in that: It includes a support seat, a molding panel, a molding cavity, a diaphragm, a heating component and a negative pressure component; One end of the molding cavity has an opening; The support seat is arranged in the molding cavity; The forming panel is arranged on the supporting seat and is used for placing the material sheet; The diaphragm is arranged on the molding cavity and closes the opening so that the molding cavity forms a sealed space; The heating component is arranged corresponding to the diaphragm and is used to heat the sealed space; The negative pressure component is arranged on the molding cavity and is used for evacuating the sealed space.

2. The structural component forming device according to claim 1, characterized in that: The molding panel is provided with a first end positioning hole, a second end positioning hole and a middle positioning hole; The first end positioning hole and the second end positioning hole are located at both ends of the forming panel, and the middle positioning hole is located between the first end positioning hole and the second end positioning hole. The first end positioning hole, the second end positioning hole and the middle positioning hole are used to position the sheet.

3. The structural component forming device according to claim 2, characterized in that: It also includes a first end stopper, a second end stopper and a middle stopper; When the sheet is placed on the forming panel, the first end limit piece is passed through the first end through hole on the sheet and is arranged in the first end positioning hole, the second end limit piece is passed through the second end through hole on the sheet and is arranged in the second end positioning hole, and the middle limit piece is passed through the middle through hole on the sheet and is arranged in the middle positioning hole, so as to fix the sheet.

4. The structural component forming device according to claim 1, characterized in that: Also includes a first end stopper and a second end stopper; The first end stopper and the second end stopper are arranged at two ends of the support seat, the forming panel is located between the first end stopper and the second end stopper, and two ends of the forming panel are connected to the first end stopper and the second end stopper respectively.

5. The structural component forming device according to claim 1, characterized in that: A temperature sensor is also included, and the temperature sensor is used to detect the temperature of the material sheet on the forming panel.

6. The structural component forming device according to claim 1, characterized in that: The thermal conductivity of the molded panel is less than 1 W / (m·K).

7. The structural component forming device according to claim 1, characterized in that: The elongation at break of the diaphragm is greater than or equal to 600%.

8. A method for preparing a structural part, characterized in that: The structural component forming device according to any one of claims 1 to 7, wherein the preparation method comprises: S10: Laying the sheet onto the formed panel; S20: Turn on the heating component to heat the sealed space; S30: the negative pressure component evacuates the sealed space, so that the diaphragm presses down the edge of the sheet to fit it to the side of the molding panel for molding; S40: Turn off the heating component to cool down the formed sheet, thereby completing the sheet forming.

9. The method for preparing a structural component according to claim 8, characterized in that: The structural member forming device further comprises a first end locating hole, a second end locating hole, a middle locating hole, a first end stopper, a second end stopper and a middle stopper; The S10 specifically includes: S11: the first end through hole on the sheet corresponds to the first end positioning hole; S12: the second end through hole on the sheet corresponds to the second end positioning hole; S13: the middle through hole on the sheet corresponds to the middle positioning hole; S14: inserting the first end stopper into the first end positioning hole; S15: inserting the second end stopper into the second end positioning hole to stop the sheet; S16: inserting the middle limiting member into the middle positioning hole to fix the sheet.

10. The method for preparing a structural component according to claim 9, characterized in that: The structural component forming device further includes, the S30 further includes the following steps: S31: using the temperature sensor to detect the temperature of the sheet; S32: When the temperature of the sheet reaches a preset temperature, the negative pressure component evacuates the sealed space.

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