Ultra-large type composite material transverse opening and closing mold and manufacturing method thereof

Abstract

The invention provides an ultra-large type composite material transverse opening and closing mold and a manufacturing method thereof, the mold comprises a fixed side mold and a movable side mold, and the movable side mold can move in the horizontal direction relative to the fixed side mold; the steel frame comprises two sub-steel frames which are fixedly connected with the fixed side mold and the movable side mold respectively; the two splicing flanges are respectively connected with the fixed side mold and the movable side mold, and a sealing structure is arranged between the fixed side mold and the movable side mold; the locking device is used for matching and locking during mold closing; the moving device is used for driving the moving side mold to be close to or away from the fixed side mold. Through the transverse opening and closing design of the mold, the problem that in the prior art, a product with the single-side size exceeding 2 m and without a draft angle needs to be spliced after being manufactured in a split part mode or subjected to destructive demolding is effectively solved, repeated use of the mold after complex parts are integrally formed is achieved, and the production efficiency is improved. The linear precision requirement and the air tightness requirement of the mold are met through the integral forming of the splicing flange and the mold and the design of the groove in the flange.

Description

Technical Field

[0001] This invention relates to the field of composite material mold technology, and more specifically, to an ultra-large composite material transverse opening and closing mold and its manufacturing method. Background Technology

[0002] Currently, for composite material products with multiple angles and complex structures, the presence of negative angles makes effective demolding impossible if the product is integrally molded. For composite material products with a single-sided dimension exceeding 2m, a line accuracy requirement of ≤±1mm, and no draft angle, the following two manufacturing methods are generally adopted:

[0003] Firstly, the overall structure is broken down into multiple parts, each of which is manufactured separately on a separate mold. After molding, the parts are assembled using methods such as adhesive bonding and mechanical connection.

[0004] For example, patent CN103692581A discloses a method for manufacturing a modular mold for a large product. The nacelle cover consists of an upper cover, a middle cover, and a lower cover. The modular mold manufacturing method includes: first, manufacturing the wooden base molds for the upper and middle covers; second, adding movable wooden blocks; third, fabricating the fiberglass mold for the upper cover and the fiberglass flange mold for the upper cover; fourth, adding skirt panels; fifth, fabricating the middle cover mold; sixth, manufacturing the fiberglass flange for the middle cover; seventh, manufacturing the lower cover; and eighth, pasting the product together. This patent design is simple, easy to process and demold, and the mold can be reused. However, because it is not a monolithic structure, the strength of the product decreases at the joints. Although auxiliary reinforcement can be added at the joints, it cannot match the strength of a one-piece molded structure. For large composite material products in aerospace, marine, and other applications with high load-bearing requirements, the modular molding and assembly process will not meet the usage requirements.

[0005] Secondly, a one-time integral mold is made according to the product shape. After the product is formed, the mold is destroyed and the product is demolded. Although this process can meet the design requirements of one-piece molding of the product, the mold cannot be reused because it needs to be destroyed for demolding. This results in high mold manufacturing costs and cannot meet the needs of mass production.

[0006] Furthermore, for ultra-large components that require vacuum injection, the flanges of the ultra-large molds used usually need to be processed separately and then assembled with the molds. In the subsequent mold closing process, their accuracy and sealing are often difficult to guarantee, which is not conducive to the vacuum injection production of ultra-large components.

[0007] In view of this, the present invention is hereby proposed. Summary of the Invention

[0008] This invention aims to propose an ultra-large composite material transverse opening and closing mold and its manufacturing method, which can solve the problem in the prior art that ultra-large composite material products with a single side dimension exceeding 2m, a line accuracy requirement of ≤±1mm, and no draft angle need to be disassembled into multiple parts for separate preparation and splicing or require the destruction of the mold when molding in one go, thus making it impossible to mass-produce quickly.

[0009] This invention discloses an ultra-large composite material transverse opening and closing mold, comprising:

[0010] A fixed-side mold and a movable-side mold, wherein the fixed-side mold is fixedly installed, and the movable-side mold is movable horizontally relative to the fixed-side mold for cooperating with the fixed-side mold to close or open the mold;

[0011] The steel frame includes two sub-steel frames, which are respectively fixedly connected to a fixed-side mold and a movable-side mold. The sub-steel frame connected to the movable-side mold can move horizontally with the movable-side mold.

[0012] The assembly flange has two flanges, which are respectively connected to the fixed side mold and the movable side mold. A sealing structure is provided between the two assembly flanges to automatically cooperate and seal when the fixed side mold and the movable side mold are closed.

[0013] A locking device, which is used to engage and lock the fixed-side mold and the movable-side mold when they are closed.

[0014] A moving device for driving a moving side mold to move closer to or away from a fixed side mold in a horizontal direction.

[0015] Furthermore, several grooves are provided on the opposite surfaces of the two splicing flanges, and sealing strips are provided in the grooves. The sealing strips protrude from the grooves so that the two splicing flanges cooperate and seal when the fixed side mold and the moving side mold are closed.

[0016] Furthermore, the splicing flange is integrally formed with the fixed-side mold and the movable-side mold, respectively.

[0017] Furthermore, the locking device includes two locking flanges, which are fixedly connected to two steel frames respectively. A plug-in post is provided on one of the locking flanges, and a plug-in pipe is provided on the other locking flange. When the mold is closed, the plug-in post extends into the plug-in pipe for positioning, and then the two locking flanges are locked and fixed by bolts.

[0018] Furthermore, the moving device includes a driving component and a moving guide component. The driving component is used to drive the moving side mold to move in the horizontal direction, and the moving guide component is used to guide the movement of the moving side mold.

[0019] Furthermore, the drive assembly includes a transverse hydraulic cylinder and a support. One end of the transverse hydraulic cylinder is connected to the steel frame corresponding to the moving mold, and the other end is connected to the support, which is used to drive the moving mold to move closer to or away from the support in the horizontal direction.

[0020] Furthermore, the moving guide assembly includes a pulley and a track. The pulley is disposed at the bottom of the steel frame corresponding to the moving side mold, and the track is fixedly disposed on the horizontal platform surface to guide the movement of the pulley.

[0021] This invention also discloses a method for manufacturing an ultra-large composite material transverse opening and closing mold, used to prepare the ultra-large composite material transverse opening and closing mold as described above, the manufacturing method comprising:

[0022] Step S1: Prepare the positive mold;

[0023] Step S2: Prepare two female molds using a male mold. When making the female molds, simultaneously fabricate the splicing flanges using a conforming partition.

[0024] Step S3: Make two sub-steel frames and connect each sub-steel frame to one of the female molds;

[0025] Step S4: Fix one of the sub-steel frames on the horizontal platform, and assemble the other sub-steel frame with the moving device to complete the mold making.

[0026] Furthermore, a plurality of convex strips are provided on one surface of the conformal partition, the convex strips extending along the overall length of the conformal partition, and the length of the conformal partition is not less than the length of the male mold. In this case, step S2 includes:

[0027] Step S21: The side of the conformal partition with the convex strip is set on the male mold along the central axis surface of the male mold;

[0028] Step S22: Hand lay up the fiberglass layer on the side of the conformal partition with the convex strip and its corresponding male mold surface to form the female mold and its corresponding splicing flange;

[0029] Step S23: Flip the conformal partition so that the convex strip faces the side of the male mold where the female mold has not been prepared, and at the same time move the conformal partition so that the side with the convex strip is set on the male mold along the central axis surface of the male mold.

[0030] Step S24: Hand lay up the fiberglass layer on the side of the conformal partition with the convex strip and its corresponding male mold surface to form another female mold and its corresponding splicing flange.

[0031] Furthermore, step S3 includes:

[0032] Step S31: Prepare two sub-steel frames by welding steel materials;

[0033] Step S32: Fix the backs of the two female molds made in step S2 to one of the sub-steel frames by hand lay-up fabric;

[0034] Step S33: Weld and fix several sets of locking devices on the two sub-steel frames.

[0035] Compared with existing technologies, the ultra-large composite material transverse opening and closing mold and its manufacturing method described in this invention have the following advantages:

[0036] This invention, through its lateral opening and closing mold design, effectively solves the problem in existing technologies where products with a single-sided dimension exceeding 2m and lacking a draft angle require separate component fabrication and subsequent assembly, or destructive demolding. It enables the reuse of the mold while allowing for smooth demolding after integral component molding. Furthermore, the integral molding of the splicing flange with the mold and the groove design at the flange effectively address the issues of insufficient linear accuracy and airtightness requirements in existing splicing molds. The lateral opening and closing mold provided by this invention has a simple structure, is easy to manufacture, and enables one-time molding of ultra-large composite material products, allowing for mass production. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 This is a three-dimensional structural diagram of the ultra-large composite material transverse opening and closing mold described in an embodiment of the present invention;

[0039] Figure 2 This is a top view of the ultra-large composite material transverse opening and closing mold described in an embodiment of the present invention;

[0040] Figure 3 This is a front view of the ultra-large composite material transverse opening and closing mold described in an embodiment of the present invention;

[0041] Figure 4 This is a schematic diagram of the male mold structure for manufacturing an ultra-large composite material transverse opening and closing mold according to an embodiment of the present invention, wherein (a) is a top view of the cross section, (b) is a side view of the cross section, and (c) is a rear view of the cross section.

[0042] Figure 5 This is a cross-sectional schematic diagram of the process of making one side of the female mold using a male mold according to an embodiment of the present invention;

[0043] Figure 6 This is a cross-sectional schematic diagram of the process of making a female mold on the other side using a male mold, as described in an embodiment of the present invention.

[0044] Explanation of reference numerals in the attached figures:

[0045] 1. Fixed side mold; 2. Moving side mold; 3. Pulley; 4. Track; 5. Splicing flange; 6. Locking device; 7. Horizontal hydraulic cylinder; 8. Support part; 9. Steel frame; 10. Male mold; 11. Conformal partition; 12. Convex strip. Detailed Implementation

[0046] To make the technical means and objectives and effects of the present invention easier to understand, the embodiments of the present invention will be described in detail below with reference to specific illustrations.

[0047] It should be noted that all directional and positional terms used in this invention, such as "up," "down," "left," "right," "front," "back," "vertical," "horizontal," "inner," "outer," "top," "lower," "lateral," "longitudinal," and "center," are only used to explain the relative positional relationships and connections between components in a specific state (as shown in the accompanying drawings). They are merely for the convenience of describing the invention and do not require the invention to be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on the invention. Furthermore, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated.

[0048] In the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0049] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0050] The following describes in detail, with reference to the accompanying drawings, an embodiment of the present invention: a transversely opening and closing mold for ultra-large composite materials and its manufacturing method.

[0051] Example 1

[0052] This embodiment discloses an ultra-large composite material transverse opening and closing mold, such as Figures 1-3 As shown, it includes:

[0053] A fixed-side mold 1 and a movable-side mold 2 are provided. The fixed-side mold 1 is fixedly installed, and the movable-side mold 2 can move horizontally relative to the fixed-side mold 1 for cooperating with the fixed-side mold 1 to close or open the mold.

[0054] The steel frame 9 includes two sub-steel frames, which are respectively fixedly connected to the fixed side mold 1 and the movable side mold 2. The sub-steel frame connected to the movable side mold 2 can move horizontally with the movable side mold 2.

[0055] There are two splicing flanges 5, which are respectively connected to the fixed side mold 1 and the movable side mold 2. A sealing structure is provided between the two splicing flanges 5 to automatically cooperate and seal when the fixed side mold 1 and the movable side mold 2 are closed.

[0056] Locking device 6, which is used to engage and lock when the fixed side mold 1 and the movable side mold 2 are closed;

[0057] A moving device is used to drive the moving side mold 2 to move closer to or away from the fixed side mold 1 in a horizontal direction.

[0058] Existing technologies cannot achieve integrated molding and non-destructive demolding of ultra-large (single side > 2m), multi-angle complex structures, and composite material products without draft angles while meeting extremely high linear accuracy (≤ ±1mm). In this application, the integrated molding and non-destructive demolding of components are achieved through the use of a laterally opening and closing mold. Even with a single-sided mold weighing over 3 tons, the mold can still be opened and closed smoothly. This achieves integrated molding of ultra-large components and non-destructive demolding, significantly reducing production costs and improving product quality and production efficiency. Specifically, the fixed-side mold 1 and the movable-side mold 2 are spliced ​​along the central axis of the mold to form composite material products with a single-sided dimension greater than 2 meters, multi-angle or negative-angle structures, and no draft angle. Furthermore, it should be understood that some composite material products with high operational requirements often need to be molded in a vacuum environment. When the mold is closed from left to right, due to its enormous weight and the dense steel frame structure 9 arranged around its circumference, it is impossible to perform vacuum bag film bonding and hand lay-up at the mold joint of the fixed side mold 1 and the moving side mold 2 during mold closing. In this example, the automatic sealing setting of the sealing structure in the splicing flange 5 during mold closing significantly improves the sealing performance of the mold. This allows the transverse opening and closing mold provided in this example to ensure its accuracy and variable demolding angle while also ensuring no vacuum leakage at the mold joint after mold closing, greatly improving the convenience and safety of operation. The mold provided in this example, while ensuring rigidity and accuracy, realizes efficient, high-precision, and mass production of large composite material products, and is suitable for fields such as aerospace and shipbuilding where structural strength and precision requirements are extremely high.

[0059] Specifically, several grooves are provided on the opposing surfaces of the two splicing flanges 5, and sealing strips are placed in the grooves. The sealing strips protrude from the grooves, so that the two splicing flanges 5 cooperate and seal when the fixed side mold 1 and the moving side mold 2 are closed. It should be noted that even if the mating surfaces of ultra-large molds have extremely high precision, minor undulations, scratches, or misalignments during assembly are still inevitable. These minor defects can easily cause the sealing strip to shift during mold closing, thus affecting its sealing effect and easily leading to leakage points due to poor local bonding. In this embodiment, the grooves provide precise and mechanical installation positioning for the sealing strip. The sealing strip is embedded in the grooves, fundamentally preventing any displacement during mold closing or under lateral force, ensuring the accuracy of the sealing position. Furthermore, the corresponding grooves on the two splicing flanges 5, combined with the sealing strip protruding from the grooves, allow the sealing strips on the two splicing flanges 5 to cooperate and compress, significantly improving the sealing effect. It should be noted that the sealing strip can be replaced before each mold closing to ensure the sealing effect in subsequent production. As one optional example, there are two grooves, each 1mm deep, and the sealing tape is 2mm thick. It should also be noted that the grooves extend through the entire length of the splicing flange 5 in the front-to-back direction to ensure sealing performance after mold closing.

[0060] In existing technologies, flanges used for mold connections are typically independently machined components, subsequently connected to the mold via bolts, welding, or other methods. This inevitably introduces machining errors, assembly gaps, and fastening deformation at the connection surfaces, severely affecting the accuracy of mold assembly and posing significant challenges to precise product manufacturing. To address these issues, in this example, the splicing flange 5 is integrally molded with both the fixed-side mold 1 and the moving-side mold 2. This design reduces the steps involved in component machining, assembly, and debugging, and effectively eliminates any potential accuracy losses from subsequent assembly processes. It ensures excellent geometric continuity and positional certainty between the flange's mating surface and the mold's profile, providing essential assurance for achieving the extreme requirements of a splicing gap ≤1mm and overall profile accuracy ≤±1mm. Furthermore, the integrally molded flange and mold avoid the risk of stress concentration at their connection point, and the integral molding design ensures material continuity between them, greatly enhancing the mold's resistance to overall or localized deformation during vacuum injection.

[0061] Specifically, the locking device 6 includes two locking flanges, which are fixedly connected to two steel frames 9 respectively. One locking flange has a plug-in post, and the other has a plug-in pipe. During mold closing, the plug-in post extends into the plug-in pipe for positioning, and then the two locking flanges are locked together with bolts. The plug-in post and plug-in pipe serve as positioning guides, effectively correcting minor deviations during mold movement and ensuring mold closing accuracy. Furthermore, the bolted fixing effectively prevents minor displacement of the moving mold 2 during product preparation, thus ensuring the precision of the finished product.

[0062] Optionally, the moving device includes a driving component and a moving guide component. The driving component is used to drive the moving side mold 2 to move in the horizontal direction, and the moving guide component is used to guide the movement of the moving side mold 2.

[0063] Specifically, the drive assembly includes a transverse hydraulic cylinder 7 and a support part 8. One end of the transverse hydraulic cylinder 7 is connected to the steel frame 9 corresponding to the movable mold 2, and the other end is connected to the support part 8, used to drive the movable mold 2 to move horizontally closer to or away from the support part 8. Specifically, the support part 8 can be a dedicated fixed bracket for support or a wall, and is not limited here. It should be noted that the movable mold 2 weighs more than 3 tons, and its driving requirements cannot be met by human power or ordinary motors. The transverse hydraulic cylinder 7 can provide a stable thrust, and the speed at which it pushes the movable mold 2 is adjustable, effectively meeting the different speed requirements during precision mold closing and opening.

[0064] Optionally, the moving guide assembly includes pulleys 3 and a track 4. The pulleys 3 are disposed at the bottom of the steel frame 9 corresponding to the moving mold 2, and the track 4 is fixedly disposed on a horizontal platform surface to guide the movement of the pulleys 3. The horizontal platform surface can be the ground or other horizontally positioned tabletop. The coordinated arrangement of the pulleys 3 and the track 4 significantly reduces the resistance during the movement of the moving mold 2, facilitating its smooth operation.

[0065] Example 2

[0066] This embodiment discloses a method for manufacturing an ultra-large composite material transverse opening and closing mold, which is used to manufacture the ultra-large composite material transverse opening and closing mold as described in Embodiment 1.

[0067] like Figures 1-6 As shown, the manufacturing method includes:

[0068] Step S1: Prepare positive mold 10;

[0069] Step S2: Prepare two female molds using the male mold 10. When making the female molds, simultaneously fabricate the splicing flange 5 using the conforming partition 11.

[0070] Step S3: Make two sub-steel frames and connect each sub-steel frame to one of the female molds;

[0071] Step S4: Fix one of the sub-steel frames on the horizontal platform, and assemble the other sub-steel frame with the moving device to complete the mold making.

[0072] With the above settings, the transverse opening and closing mold produced in this example can meet the extreme precision requirements of splicing gap ≤1mm and surface line accuracy ≤±1mm even when the single side is >2m, ensuring the precise molding of large composite material products with high load-bearing requirements such as aerospace and marine applications.

[0073] As one example, step S1 includes: laying out an initial male mold using clay, machining it, and then spraying gel coat onto its surface to form a male mold 10, such as... Figure 4 As shown.

[0074] Specifically, firstly, an initial male mold is laid out using clay according to the drawing requirements. After being shaped by a CNC five-axis CNC machining tool, a high-gloss gel coat is sprayed onto the surface, ultimately forming the male mold for producing the finished product mold. It should be understood that the product prepared in this application has a single-sided dimension exceeding 2 meters, resulting in a massive structure. Using solid materials for processing would be costly and prone to errors. Furthermore, existing male molds are typically handmade, making it impossible to guarantee the accuracy of the surface. In this example, highly malleable clay is first laid out, followed by machining. This reduces the material cost of the male mold and facilitates modification. Furthermore, machining ensures a line accuracy of ≤±1mm. The high-gloss gel coat coating then forms a hard, dense, and mirror-like surface layer, allowing the finished male mold 10 to be reused. It should be understood that after the male mold 10 is prepared, its line accuracy is tested. Only after passing the test can it be used for the production of the female mold in step S2.

[0075] A plurality of convex strips 12 are provided on one surface of the conformal partition 11, the convex strips 12 extending along the overall length of the conformal partition 11, and the length of the conformal partition 11 is not less than the length of the male mold 10. In this case, step S2 includes:

[0076] Step S21: The side of the conformal partition 11 with the convex strip 12 is positioned on the male mold 10 along the central axis surface of the male mold 10; specifically as follows... Figure 5 As shown;

[0077] Step S22: Hand lay up the glass fiber layer on the side of the conformal partition 11 with the convex strip 12 and the corresponding male mold 10 surface to form the female mold and its corresponding splicing flange 5;

[0078] Step S23: Flip the conformal partition 11 so that the convex strip 12 faces the side of the male mold 10 where the female mold has not been prepared, and simultaneously move the conformal partition 11 so that the side with the convex strip 12 is positioned on the male mold 10 along the central axis surface of the male mold 10; specifically as follows... Figure 6 As shown;

[0079] Step S24: Hand lay up the fiberglass layer on the side of the conformal partition 11 with the convex strip 12 and the surface of the corresponding male mold 10 to form another female mold and its corresponding splicing flange 5.

[0080] It should be noted that the central axis surface refers to the central axis surface in the left-right direction, specifically the surface where the top central axis and bottom central axis of the male mold 10 extend in the front-back direction. This surface is perpendicular to the horizontal plane and the left-right direction. The overall length direction of the conformal partition 11 refers to its length direction in the front-back direction. In the prior art, the left and right female molds need to be prepared separately, and the flanges used for splicing also need to be prepared separately. There are many parts, the cumulative error is large, and a lot of manpower and resources are needed to adjust them during the later mold assembly. It is still difficult to meet the requirements of splicing gap ≤1mm and surface line accuracy ≤±1mm. The yield of ultra-large molds prepared by the above method is low, and the performance consistency is also poor, which cannot meet the needs of mass production equipment. In this example, a male mold 10 with stable dimensions, smooth surface, and extremely high geometric accuracy is manufactured through step S1. CNC five-axis machining ensures the accuracy of complex three-dimensional surfaces, especially in multi-angle and negative angle areas. The high-gloss gel coat provides an ideal parting surface, physically guaranteeing the accuracy of the male mold 10 as the master mold. Based on this, by flipping the conformal partition 11 during the manufacturing process, the splicing flanges 5 on the two female molds are made through the same conformal partition 11, so that the two are mirror-like and provide a guarantee for the accuracy of subsequent mold closing. In addition, in the prior art, if a groove is to be set on the flange to add a sealing ring, additional processing is required after the flange is formed. These processing methods have the risk of damaging the flatness of the flange surface, further increasing the error during mold closing. In this example, the convex strip 12 is set so that it is integrally formed with the splicing flange 5, and the grooves on the two splicing flanges 5 can also correspond precisely, significantly improving the mold closing accuracy. It should be noted that, in order to ensure the linear accuracy of the spliced ​​flange 5, the flatness of the portion of the conformal partition 11, excluding the convex strip 12, is ≤1mm, so as to ensure that the linear accuracy of the finally formed spliced ​​flange 5 meets the requirements. As one optional example, there are two convex strips 12 on the conformal partition 11, and the protrusion height of each convex strip 12 is 1mm.

[0081] Optionally, step S3 includes:

[0082] Step S31: Prepare two sub-steel frames by welding steel materials;

[0083] Step S32: Fix the backs of the two female molds made in step S2 to one of the sub-steel frames by hand lay-up fabric;

[0084] Step S33: Weld and fix several sets of locking devices 6 on the two sub-steel frames.

[0085] Specifically, the hand lay-up fabric refers to fiberglass cloth impregnated with resin, which is then used to fix the sub-steel frame to the female mold. It should be noted that the female mold made of large fiberglass has limited rigidity and will deform under vacuum and clamping force. The steel frame 9 and the composite material shell have significantly different coefficients of thermal expansion. Rigid connections (such as direct bolt locking) will generate enormous internal stress during temperature changes, leading to cracking of the mold shell or distortion of the mold surface. In this example, the hand lay-up fabric connection between the steel frame 9 and the female mold provides sufficient support for the female mold, while a resin layer of a certain thickness and elasticity exists between them. This resin layer effectively buffers and absorbs the stress generated by temperature changes, preventing it from being directly transmitted to the mold and causing cracking and deformation, thus ensuring the normal operation of the mold.

[0086] Step S4 includes:

[0087] Step S41: Fix one of the sub-steel frames on the horizontal platform surface;

[0088] Step S42: Lay the track 4 on the horizontal platform and set the pulley 3 at the bottom of another sub-steel frame. The track 4 and the pulley 3 are configured to cooperate.

[0089] Step S43: A transverse hydraulic cylinder 7 is installed between the sub-steel frame and the support part 8 corresponding to step S42.

[0090] Through the above settings, the female mold on the fixed sub-steel frame in step S41 becomes the fixed side mold 1, and the other female mold becomes the movable side mold 2. Since the overall weight of the mold is as high as several tons to tens of tons, the settings in step S41 establish fixed coordinate points to facilitate the fixing and setting of other components in the future.

[0091] It should be noted that after the mold is manufactured, it is necessary to conduct an airtightness test after mold closing. Only after the test is passed can it be put into use. The specific test methods and standards are not part of the improvements in this application and will not be elaborated here.

[0092] Specifically, the preparation and use process of the mold provided in this example is as follows:

[0093] 1) The mold is processed and shaped according to the mold manufacturing method;

[0094] 2) Install and debug the mold, and check its opening and closing and airtightness;

[0095] 3) Mold maintenance requires the mold to be maintained and serviced.

[0096] 4) Inject complex multi-angle structure products into the mold surface to ensure no air leakage during the injection process;

[0097] 5) After the product is formed, control the horizontal hydraulic cylinder to push open the moving side mold to complete the demolding of the entire product.

[0098] This embodiment effectively solves the problem in the prior art that products with a single side dimension exceeding 2m and no draft angle need to be prepared in parts and then spliced, or subjected to destructive demolding, by designing the mold to open and close laterally. It enables the reuse of the mold after the parts are integrally formed and can be demolded smoothly. In addition, the integral forming of the splicing flange and the mold and the design of the groove at the flange effectively solve the requirements for the linear accuracy and airtightness of the splicing mold.

[0099] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A transversely opening and closing mold for ultra-large composite materials, characterized in that, include: A fixed-side mold (1) and a movable-side mold (2) are provided. The fixed-side mold (1) is fixedly installed, and the movable-side mold (2) can move horizontally relative to the fixed-side mold (1) for cooperating with the fixed-side mold (1) to close or open the mold. The steel frame (9) includes two sub-steel frames, which are respectively fixedly connected to the fixed side mold (1) and the moving side mold (2). The sub-steel frame connected to the moving side mold (2) can move horizontally with the moving side mold (2). There are two splicing flanges (5), which are respectively connected to the fixed side mold (1) and the moving side mold (2). A sealing structure is provided between the two splicing flanges (5) for automatic sealing when the fixed side mold (1) and the moving side mold (2) are closed. Locking device (6), the locking device (6) is used to lock the fixed side mold (1) and the moving side mold (2) when they are closed; A moving device for driving the moving side mold (2) to move closer to or away from the fixed side mold (1) in the horizontal direction.

2. The ultra-large composite material transverse opening and closing mold as described in claim 1, characterized in that, Several grooves are provided on the opposite surfaces of the two splicing flanges (5), and sealing strips are provided in the grooves. The sealing strips protrude from the grooves so that when the fixed side mold (1) and the moving side mold (2) are closed, the two splicing flanges (5) cooperate and seal.

3. The ultra-large composite material transverse opening and closing mold as described in claim 1, characterized in that, The splicing flange (5) is integrally formed with the fixed side mold (1) and the moving side mold (2).

4. The ultra-large composite material transverse opening and closing mold as described in claim 1, characterized in that, The locking device (6) includes two locking flanges, which are fixedly connected to two steel frames (9) respectively. A plug-in post is provided on one of the locking flanges, and a plug-in pipe is provided on the other locking flange. When the mold is closed, the plug-in post extends into the plug-in pipe for positioning, and then the two locking flanges are locked and fixed by bolts.

5. The ultra-large composite material transverse opening and closing mold as described in claim 1, characterized in that, The moving device includes a driving component and a moving guide component. The driving component is used to drive the moving side mold (2) to move in the horizontal direction, and the moving guide component is used to guide the movement of the moving side mold (2).

6. The ultra-large composite material transverse opening and closing mold as described in claim 5, characterized in that, The drive assembly includes a transverse hydraulic cylinder (7) and a support (8). One end of the transverse hydraulic cylinder (7) is connected to the steel frame (9) corresponding to the moving side mold (2), and the other end is connected to the support (8). It is used to drive the moving side mold (2) to move closer to or further away from the support (8) in the horizontal direction.

7. The ultra-large composite material transverse opening and closing mold as described in claim 6, characterized in that, The moving guide assembly includes a pulley (3) and a track (4). The pulley (3) is located at the bottom of the steel frame (9) corresponding to the moving side mold (2), and the track (4) is fixedly located on the horizontal platform surface to guide the movement of the pulley (3).

8. A method for manufacturing an ultra-large composite material transverse opening and closing mold, used to prepare an ultra-large composite material transverse opening and closing mold as described in any one of claims 1-7, characterized in that, The manufacturing method includes: Step S1: Prepare the positive mold; Step S2: Prepare two female molds using a male mold. When making the female molds, simultaneously fabricate the splicing flanges using a conforming partition. Step S3: Make two sub-steel frames and connect each sub-steel frame to one of the female molds; Step S4: Fix one of the sub-steel frames on the horizontal platform, and assemble the other sub-steel frame with the moving device to complete the mold making.

9. The manufacturing method as described in claim 8, characterized in that, A plurality of convex strips are provided on one surface of the conformal partition, the convex strips extending along the overall length of the conformal partition, and the length of the conformal partition is not less than the length of the male mold. In this case, step S2 includes: Step S21: The side of the conformal partition with the convex strip is set on the male mold along the central axis surface of the male mold; Step S22: Hand lay up the fiberglass layer on the side of the conformal partition with the convex strip and its corresponding male mold surface to form the female mold and its corresponding splicing flange; Step S23: Flip the conformal partition so that the convex strip faces the side of the male mold where the female mold has not been prepared, and at the same time move the conformal partition so that the side with the convex strip is set on the male mold along the central axis surface of the male mold. Step S24: Hand lay up the fiberglass layer on the side of the conformal partition with the convex strip and its corresponding male mold surface to form another female mold and its corresponding splicing flange.

10. The manufacturing method as described in claim 8, characterized in that, Step S3 includes: Step S31: Prepare two sub-steel frames by welding steel materials; Step S32: Fix the backs of the two female molds made in step S2 to one of the sub-steel frames by hand lay-up fabric; Step S33: Weld and fix several sets of locking devices on the two sub-steel frames.

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