A composite material thermosetting device

Abstract

This invention provides a composite material thermosetting device, comprising: a housing; a cover, including: a top cover, side walls, and a first rubber plate, the top cover being located at the top of the side walls, and the first rubber plate being located at the bottom of the side walls, the top cover, side walls, and first rubber plate forming a closed second cavity; a hot air blower; multiple distribution pipes located in the second cavity and connected to the air outlet of the hot air blower, the distribution pipes having multiple air outlet holes; an air outlet pipe, one end connected to the second cavity and the other end connected to the outside; and a vacuum device connected to the first cavity via a pipeline. This composite material thermosetting device uses a flexible rubber plate as a female mold. After the rubber plate expands due to heat, it applies pressure to the preform. Compared to the rigid female and male mold combination molding method, or the vacuum bag film pressure method, it produces a better molding effect, more uniform stress on the preform during curing, and better internal product quality; furthermore, the rubber plate pressure application is more versatile and suitable for molding products of different sizes.

Description

Technical Field

[0001] This invention belongs to the technical field of equipment for composite material preparation, and specifically relates to a composite material thermosetting device. Background Technology

[0002] Fiber-reinforced resin matrix composites are materials composed of fiber materials as reinforcement and resin materials as the matrix. Fiber-reinforced resin matrix composites possess lightweight and high-strength properties, and are therefore widely used in aerospace, wind power, and road transportation industries. For example, in the main load-bearing components of aircraft wings, such as spars and ribs, composite materials can significantly reduce structural weight while maintaining strength. The preparation process of composite materials generally involves impregnating a resin matrix with fiber reinforcement to form a preform of reinforcing fibers and resin matrix. The preform is then placed in a mold, and the mold is placed in a thermosetting device for curing under high temperature and pressure.

[0003] Currently, the main device for curing composite materials is an oven. The preform is placed in a mold, and after mold closing, it is placed in the oven for curing. For example, Chinese patent document CN 209096064 U discloses a composite material curing device, including an insulated box, an electric heating element, a vibration table, a microwave generator, a microwave cavity, a microwave local shielding element, and a vacuum pumping component. The preform after mold closing is placed in the insulated box for curing. However, for large-sized, thin-thick structures such as wing ribs, during the thermosetting process after the male and female molds are combined, the product continuously shrinks, resulting in poor mold adhesion and poor molding effect. Furthermore, the mold-closing method of the male and female molds has poor versatility; to prepare products of different sizes, multiple matching molds must be prepared first. Using a vacuum bag to cover the surface of the preform and then using a male mold for curing improves the mold adhesion effect, but the product experiences uneven stress and poor internal quality. In addition, the thermosetting equipment currently used is not very versatile; for large-sized and thin structures such as wing ribs, the edges are prone to bending due to gravity during thermosetting, resulting in poor product quality. These are all problems that need to be solved. Summary of the Invention

[0004] The technical problem solved by this invention is to provide a thermosetting device for composite materials, which uses a flexible rubber sheet as a female mold. After the rubber sheet expands due to heat, it applies pressure to the preform. Compared with the molding method of using a rigid female mold and male mold, or the method of applying pressure with a vacuum bag film, the molding effect produced by the pressure of the flexible rubber sheet is better, the preform is subjected to more uniform stress during the curing process, and the internal quality of the product is better. Moreover, the pressure application of the rubber sheet is more versatile. The same rubber sheet can be used to mold products of different sizes, without the need to make different female molds according to the product size.

[0005] To address the above problems, the present invention provides a composite material thermosetting apparatus, comprising:

[0006] The box body is a first cavity with an open top, and a composite material molding die can be placed in the first cavity;

[0007] A cover is provided to close the opening of the box body; the cover includes: an upper cover, a side wall, and a first rubber plate, the upper cover is located at the top of the side wall, the first rubber plate is located at the bottom of the side wall, and the upper cover, the side wall, and the first rubber plate form a closed second cavity;

[0008] A hot air blower is used to generate hot air;

[0009] Multiple diversion pipes are disposed in the second cavity. The diversion pipes are connected to the air outlet of the hot air blower through air inlet pipes. The diversion pipes are provided with multiple air outlets, which are connected to the second cavity.

[0010] An air outlet duct, one end of which is connected to the second cavity and the other end of which is connected to the outside;

[0011] A vacuum pumping device is connected to the first cavity via a pipeline.

[0012] Preferably, the sidewall comprises:

[0013] Ring-shaped metal profile;

[0014] A first annular rubber is disposed on the top of the annular metal profile and wraps around the upper part of the annular metal profile;

[0015] A second annular rubber is disposed at the bottom of the annular metal profile and wraps around the lower part of the annular metal profile; the bottom of the second annular rubber is bonded to the first rubber plate.

[0016] Preferably, the upper sidewall of the annular metal profile is provided with a plurality of first annular protruding teeth surrounding the sidewall of the annular metal profile, and the inner sidewall of the first annular rubber is provided with a plurality of first annular concave teeth surrounding the inner sidewall of the first annular rubber, the positions of the first annular concave teeth and the first annular protruding teeth are corresponding, and the first annular concave teeth are embedded in the first annular protruding teeth.

[0017] The lower sidewall of the annular metal profile is provided with a plurality of second annular protruding teeth, and the inner sidewall of the second annular rubber is provided with a plurality of second annular concave teeth, the second annular concave teeth being positioned corresponding to the second annular protruding teeth, and the second annular concave teeth being embedded in the second annular protruding teeth.

[0018] Preferably, the bottom of the annular metal profile is provided with an annular groove, the annular groove is filled with an annular airbag, and the annular airbag expands and presses against the second annular rubber.

[0019] Preferably, the cover further includes a buffer chamber located on the outer side of the side wall; the side wall has multiple through holes communicating with the buffer chamber, and the buffer chamber is connected to the air outlet of the hot air blower through the air inlet pipe; multiple diverter pipes are arranged in parallel, one end of each diverter pipe is closed, and the other end communicates with the through holes.

[0020] Preferably, the composite material thermosetting apparatus further includes:

[0021] The mold lifting mechanism is located at the bottom of the first cavity;

[0022] A mold mounting part is used to mount a composite material molding mold. The mold mounting part is connected to the lifting end of the mold lifting mechanism, and the mold lifting mechanism drives the mold mounting part to move up and down in the vertical direction.

[0023] Preferably, a first pressure plate mechanism and a second pressure plate mechanism are respectively provided on both sides of the mold mounting part;

[0024] The first pressure plate mechanism includes:

[0025] First pressure plate platform;

[0026] The first pressure plate is hinged to the first pressure plate platform, and the first pressure plate can be pressed or opened relative to the first pressure plate platform.

[0027] A first horizontal moving mechanism is disposed in the housing and connected to the first pressure plate platform. The first horizontal moving mechanism can make the first pressure plate platform move horizontally in a direction perpendicular to the axial direction of the composite material molding die.

[0028] The second pressure plate mechanism includes:

[0029] Second pressure plate platform;

[0030] The second pressure plate is hinged to the second pressure plate platform, and the second pressure plate can be pressed or opened relative to the second pressure plate platform;

[0031] The second horizontal moving mechanism is located in the housing and connected to the second pressure plate platform. The second horizontal moving mechanism can make the second pressure plate platform move horizontally in a direction perpendicular to the axial direction of the composite material molding die.

[0032] Preferably, it further includes a lid-opening mechanism, the lid-opening mechanism comprising:

[0033] A longitudinal moving mechanism is provided on the housing;

[0034] A lateral moving mechanism is connected to the moving end of the longitudinal moving mechanism, and the moving end of the lateral moving mechanism is connected to the cover.

[0035] The cover can move vertically under the drive of the longitudinal moving mechanism, and can move horizontally under the drive of the transverse moving mechanism.

[0036] Preferably, the cover further includes:

[0037] A second rubber sheet is disposed above the upper cover;

[0038] The outer cover fits over the second rubber plate.

[0039] Preferably, a plurality of locking mechanisms are provided between the housing and the cover;

[0040] The locking mechanism includes:

[0041] A first locking plate is disposed on the cover, and the first locking plate is provided with a first locking hole;

[0042] A second locking plate is provided on the housing, and a second locking hole is provided on the second locking plate at a position corresponding to the first locking hole;

[0043] Telescopic cylinder;

[0044] A locking shaft is connected to the telescopic shaft of the telescopic cylinder, and the locking shaft can be inserted into or pulled out from the first locking hole and the second locking hole when the telescopic cylinder is activated.

[0045] Compared with the prior art, the present invention has the following advantages:

[0046] The composite material thermosetting device of the present invention uses a flexible rubber sheet as a female mold. After the rubber sheet expands due to heat, it applies pressure to the preform. Compared with the method of forming by combining a rigid female mold and a male mold, or the method of applying pressure with a vacuum bag film, the molding effect produced by the pressure of the flexible rubber sheet is better, the preform is subjected to more uniform stress during the curing process, and the internal quality of the product is better. In addition, the rubber sheet has greater versatility in applying pressure, and the same rubber sheet can be used to form products of different sizes without the need to make different female molds according to the product size.

[0047] The composite material thermosetting device of the present invention has a cover with sidewalls composed of annular metal profiles and annular rubber. The first and second annular rubbers are flexible and deformable materials, which can be pressed more closely onto the first rubber plate under heating conditions, making the first rubber plate seal more tightly with the edge of the box below, improving the vacuuming effect, and also improving the pressure effect of the first rubber plate on the preform. The annular rubber and the annular metal profile are connected by annular protrusions and annular grooves, which enhances stability. An annular airbag is provided at the bottom of the annular metal profile. After expansion, the annular airbag presses against the annular rubber, improving the tightness of the seal between the first rubber plate and the edge of the box below.

[0048] The composite material thermosetting device of the present invention is provided with a mold lifting mechanism, which can adjust the height of the composite material molding mold, thereby changing the distance between the mold and the first rubber plate, and is suitable for preparing products of different thicknesses and sizes; pressure plate mechanisms are provided on both sides of the mold, after the preform is placed on the mold, its sides can be spread out and pressed and fixed by the pressure plate mechanisms to prevent it from falling due to gravity.

[0049] The composite material thermosetting device of the present invention has a longitudinal moving mechanism and a transverse moving mechanism at the bottom of the cover. After the product is cured, the cover can be lifted by the longitudinal moving mechanism and then the lifted cover can be moved horizontally by the transverse moving mechanism until the opening end of the box is opened. A locking mechanism is also provided. After the cover is closed, the telescopic cylinder drives the locking shaft to move and insert into the first locking hole and the second locking hole, thereby locking the cover and the box to ensure the vacuum degree during the curing process. Attached Figure Description

[0050] Figure 1 This is a schematic diagram of the composite material thermosetting device described in an embodiment of the present invention;

[0051] Figure 2 This is a schematic diagram of the composite material thermosetting device described in an embodiment of the present invention from another angle;

[0052] Figure 3 This is an exploded view of the cover body in the composite material thermosetting device described in this embodiment of the invention;

[0053] Figure 4 This is a schematic longitudinal section of the side wall of the cover in the composite material thermosetting device according to an embodiment of the present invention;

[0054] Figure 5 This is a schematic diagram of the structure of the composite material thermosetting device after the cover is opened according to an embodiment of the present invention;

[0055] Figure 6 This is a schematic diagram of the structure of the neutron cover of the upper cover of the composite material thermosetting device described in this embodiment of the invention;

[0056] Figure 7 This is a schematic diagram of the internal structure of the box in the composite material thermosetting device described in the embodiment of the present invention;

[0057] Figure 8 This is a schematic diagram of the structure of the composite material thermosetting device according to an embodiment of the present invention, after the composite material molding mold is installed inside the box.

[0058] Figure 9 This is a schematic diagram of the locking mechanism in the composite material thermosetting device according to an embodiment of the present invention;

[0059] Figure 10 This is a schematic diagram of the mold lifting mechanism in the composite material thermosetting device described in this embodiment of the invention.

[0060] Wherein: 1-Box body; 2-First cavity; 3-Composite material molding mold; 4-Lid; 41-Top cover; 411-Left sub-lid; 412-Middle sub-lid; 413-Right sub-lid; 414-First step surface; 415-Second step surface; 416-Third step surface; 417-Fourth step surface; 42-Side wall; 421-Annular metal profile; 422-First annular rubber; 423-Second annular rubber; 424-First annular convex tooth; 425-First annular concave tooth; 426-Second annular convex tooth; 427-Second annular concave tooth; 428-Annular groove; 429-Annular airbag; 43-First rubber plate; 44-Buffer chamber; 45-Through hole; 46- 47-Outer cover; 5-Second cavity; 6-Hot air blower; 7-Diverter pipe; 8-Inlet pipe; 81-First inlet pipe section; 82-Second inlet pipe section; 10-Outlet pipe; 11-Vacuum device; 12-Mold mounting part; 13-Motor; 14-Reducer; 15-Reversing gear set; 16-Drive shaft; 17-Transmission component; 18-Telescopic shaft; 19-Guide column; 20-First pressure plate platform; 21-First pressure plate; 22-First locking piece; 23-Second locking piece; 24-Telescopic cylinder; 25-Locking shaft; 26-Base; 27-Pulley; 28-Second pressure plate platform; 29-Second pressure plate; 30-Horizontal moving mechanism; 31-Longitudinal moving mechanism. Detailed Implementation

[0061] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention. Example 1

[0062] like Figure 1 , Figure 2 , Figure 3 As shown, a composite material thermosetting apparatus according to this embodiment includes:

[0063] Box 1, Box 1 is a first cavity 2 with an open top, and the first cavity 2 can hold a composite material molding die 3;

[0064] The cover 4 is fitted onto the opening of the box 1; the cover 4 includes: an upper cover 41, a side wall 42 and a first rubber plate 43, the upper cover 41 is located on the top of the side wall 42 and the first rubber plate 43 is located on the bottom of the side wall 42, the upper cover 41, the side wall 42 and the first rubber plate 43 form a closed second cavity 5.

[0065] Hot air blower 6, used to generate hot air;

[0066] Multiple diversion pipes 7 are provided in the second cavity 5. The diversion pipes 7 are connected to the air outlet of the hot air blower 6 through the air inlet pipe 8. The diversion pipes 7 are provided with multiple air outlets, which are connected to the second cavity 5.

[0067] Air outlet duct 10, one end of which is connected to the second cavity 5, and the other end is connected to the outside;

[0068] Vacuum pumping device 11 is connected to the first cavity 2 via a pipeline.

[0069] The working process of the composite material thermosetting device in this embodiment of the invention is as follows: the product male mold is placed in the first cavity 2 of the box 1, and then the preform is laid in the male mold. The cover 4 is closed, and hot air is generated by the hot air blower. The hot air is distributed through multiple diversion pipes and discharged into the second cavity 5 of the cover 4 through the air outlet. Under the heating of the hot air, the volume of the first rubber plate 43 expands and presses against the upper surface of the preform in the male mold. As it is heated, pressure is continuously applied to the preform and heated. At the same time, the vacuum device evacuates the first cavity in the box 1 to compact the preform until curing is completed.

[0070] The composite material thermosetting device of this invention uses a flexible rubber sheet as a female mold. After the rubber sheet expands due to heat, it applies pressure to the preform. Compared with the method of forming by combining a rigid female mold and a male mold, or the method of applying pressure with a vacuum bag film, the molding effect produced by the pressure of the flexible rubber sheet is better, the preform is subjected to more uniform stress during the curing process, and the internal quality of the product is better. In addition, the rubber sheet has greater versatility in applying pressure, and the same rubber sheet can be used to form products of different sizes without the need to make different female molds according to the product size.

[0071] In some implementations, the sidewall 42 can be a ring-shaped frame made of metal, such as aluminum or iron, as long as it can provide sufficient strength support and will not undergo significant deformation at the curing temperature.

[0072] As a preferred implementation method, such as Figure 4 As shown, the sidewall 42 includes:

[0073] 421 ring-shaped metal profile;

[0074] The first annular rubber 422 is disposed on the top of the annular metal profile 421 and wraps around the upper part of the annular metal profile 421;

[0075] The second annular rubber 423 is located at the bottom of the annular metal profile 421 and wraps around the lower part of the annular metal profile 421.

[0076] The annular metal profile provides mechanical strength to the sidewalls, while the first and second annular rubber rings are flexible and deformable materials. Under heating conditions, they can be pressed more closely onto the first rubber plate, resulting in a tighter seal between the first rubber plate and the lower edge of the housing, improving the vacuuming effect. Simultaneously, the first rubber plate exerts better pressure on the precast body. Furthermore, the second annular rubber ring can better connect and fix to the lower first rubber plate.

[0077] The bottom of the second annular rubber can be bonded to the first rubber plate.

[0078] The top cover 41 and the annular metal profile 421 can be connected by fasteners or glued together.

[0079] In some embodiments, the specific shape of the annular metal profile is not limited and can be adjusted according to the specific shape of the housing it is paired with, so that it can fit over the housing. For example, it can be a rectangular annular, a square annular, an elliptical annular, a circular annular, etc. Preferably, for the fabrication of wing ribs, both the annular metal profile and the housing are rectangular annular, and the shape formed by its four walls is the same as the shape formed by the four side walls of the housing.

[0080] In some embodiments, the first annular rubber 422 and the second annular rubber 423 are sized to match the annular metal profile 421, and are simply wrapped or fitted onto the upper and lower parts of the annular metal profile. The specific longitudinal cross-sectional shape of the first annular rubber 422 and the second annular rubber 423 is not limited. Preferably, the longitudinal cross-section of the first annular rubber 422 is U-shaped, and the longitudinal cross-section of the second annular rubber 423 is an inverted U-shaped.

[0081] In some embodiments, a plurality of first annular protruding teeth 424 are provided on the upper sidewall of the annular metal profile 421, and a plurality of first annular concave teeth 425 are provided on the inner sidewall of the first annular rubber 422. The positions of the first annular concave teeth 425 correspond to those of the first annular protruding teeth 424, and the first annular concave teeth 425 are embedded in the first annular protruding teeth 424.

[0082] In some embodiments, a plurality of second annular protruding teeth 426 are provided on the lower sidewall of the annular metal profile 421, and a plurality of second annular concave teeth 427 are provided on the inner sidewall of the second annular rubber 423. The positions of the second annular concave teeth 427 and the second annular protruding teeth 426 correspond, and the second annular concave teeth 427 are embedded in the second annular protruding teeth 426.

[0083] The ring-shaped convex teeth and the ring-shaped concave teeth work together to firmly fix the ring-shaped rubber to the ring-shaped metal profile.

[0084] In some embodiments, a plurality of first annular protrusions and a plurality of second annular protrusions are arranged in parallel, with the first annular protrusions and the second annular protrusions being equally spaced.

[0085] In some embodiments, the number of the first annular protrusions can be selected as 2-5, and the number of the second annular protrusions can be selected as 2-5. In order to ensure the connection strength between the annular metal profile and the annular rubber, while taking into account the processing difficulty, the first annular protrusions and the second annular protrusions are preferably 3.

[0086] In some embodiments, the bottom of the annular metal profile 421 is provided with an annular groove 428, which is filled with an annular airbag 429. After the annular airbag 429 expands, it presses against the second annular rubber 423. The annular airbag can be expanded by inflation or by heating. After expansion, the annular airbag presses against the second annular rubber, applying pressure to the second annular rubber, causing the second annular rubber to press against the first rubber plate. This further improves the tightness of the seal between the first rubber plate and the lower edge of the box, enhances the vacuum effect, ensures more uniform pressure applied by the first rubber plate to the preform during the curing process, and results in better product molding.

[0087] In some embodiments, the composite material thermosetting apparatus further includes an inflation device connected to the annular airbag 429 for inflating the annular airbag.

[0088] In some implementations, such as Figure 5 As shown, the cover 4 also includes a buffer chamber 44, which is located on the outer side of the side wall 42. The side wall 42 has multiple through holes 45 that communicate with the buffer chamber 44. The buffer chamber 44 is connected to the air outlet of the hot air blower 6 via an air inlet pipe 8. The hot air supplied by the hot air blower first enters the buffer chamber 44 for accumulation, and then is diverted through the multiple through holes 45 in the buffer chamber 44 to different diversion pipes. These different diversion pipes then distribute the hot air to different parts of the second cavity of the cover, thus making the heating in the cover more uniform and preventing heat from accumulating in one place while other parts remain unheated. This results in more uniform heating of the product and a more consistent curing effect.

[0089] In some embodiments, there can be one or more buffer chambers on the cover, which can be adjusted according to the actual length of the thermosetting device. The longer the thermosetting device, the more buffer chambers can be set. In this embodiment, there are 5 buffer chambers. The multiple buffer chambers are arranged sequentially along the length of the cover.

[0090] In some implementations, each buffer chamber 44 may be connected to a single hot air blower, or multiple buffer chambers may be connected to the same hot air blower. To ensure heating effect, each buffer chamber 44 is connected to one hot air blower.

[0091] In some embodiments, one end of the diversion pipe 7 is closed, and the other end is connected to the through hole 45. With this configuration, the hot air entering the diversion pipe flows back when it reaches the closed end of the diversion pipe and is sent out through the multiple air outlets provided on the diversion pipe, instead of flowing directly to the other end of the diversion pipe for discharge, thus ensuring the distribution of hot airflow along the length of the diversion pipe.

[0092] In some embodiments, multiple air outlets are arranged at equal intervals along the length of the splitter pipe 7. This ensures a uniform distribution of hot airflow along the length of the splitter pipe.

[0093] In some implementations, each buffer chamber 44 may be connected to 6-12 shunt pipes, preferably 8 shunt pipes in each buffer chamber.

[0094] In some embodiments, multiple diversion pipes 7 are arranged in parallel, and in a direction perpendicular to the length of the diversion pipes 7, the multiple diversion pipes 7 are arranged at equal intervals.

[0095] In some embodiments, the cover of the composite material thermosetting apparatus further includes:

[0096] The second rubber plate 46 is located above the upper cover 41;

[0097] The outer cover 47 is fitted over the second rubber plate 46.

[0098] The second rubber plate 46 can serve as a spare component for the first rubber plate 43. When the first rubber plate is severely damaged, the outer cover can be opened and the second rubber plate 46 can be taken out as a replacement.

[0099] In some embodiments, the upper cover 41 can be a single integral structure or a structure formed by assembling multiple cover pieces. Preferably, the upper cover 41 includes a left sub-cover 411, multiple middle sub-covers 412, and a right sub-cover 413 arranged sequentially along the length of the cover structure. The lower surface of the left sub-cover 411 connected to the middle sub-cover 412 is provided with a first stepped surface 414, and the upper surface of the right sub-cover 413 connected to the middle sub-cover 412 is provided with a second stepped surface 415, such as... Figure 6As shown, the upper surface of one side of the neutron cover 412 is provided with a third step surface 416, and the lower surface of the other side of the neutron cover 412 is provided with a fourth step surface 417. The corresponding step surfaces on the adjacent left sub-cover 411, neutron cover 412 and right sub-cover 413 form an overlapping structure.

[0100] The top cover is designed as a series of interlocking sub-covers, which facilitates disassembly and maintenance of the internal structure. The sub-covers are joined by stepped surfaces, which improves the connection strength between them.

[0101] In some embodiments, the material of the top cover 41 can be one of aluminum, iron, or acrylic.

[0102] In some implementations, such as Figure 10 As shown, the composite material thermosetting device also includes:

[0103] The mold lifting mechanism is located at the bottom of the first cavity 2;

[0104] The mold mounting part 12 is used to mount the composite material molding mold 3. The mold mounting part 12 is connected to the lifting end of the mold lifting mechanism. The mold lifting mechanism drives the mold mounting part 12 to move up and down in the vertical direction.

[0105] This composite material thermosetting device is mainly suitable for preparing large structures with relatively thin thickness. The height of the composite material molding mold (which acts as a male mold in this application) can be adjusted by the mold lifting mechanism, thereby changing the distance between the mold and the first rubber plate (which acts as a female mold in this application), so it can be used to prepare products with different thicknesses and sizes. The mold is installed on the mold mounting part 12. For products with different shapes and sizes, different molds can be replaced for molding. Therefore, this composite material thermosetting device has strong versatility.

[0106] The mold lifting mechanism can be any of the following: telescopic motor, telescopic cylinder, telescopic hydraulic cylinder, etc.

[0107] In some implementations, such as Figure 10As shown, the mold lifting mechanism includes: a motor 13, a reducer 14, a reversing gear set 15, a transmission shaft 16, a transmission component 17, and a telescopic shaft 18. The motor 13 is connected to the reducer 14, the output shaft of the reducer 14 is connected to the reversing gear set 15, and the reversing gear set 15 is connected to the transmission shaft 16. The reversing gear set 15 converts rotation about the width direction parallel to the composite material thermosetting device into rotation about the length direction parallel to the composite material thermosetting device. The transmission shaft 16 and the telescopic shaft 18 are connected via the transmission component 17. The telescopic end of the telescopic shaft 18 is connected to the mold mounting part, converting the rotation about the length direction parallel to the composite material thermosetting device into reciprocating motion in the height direction of the composite material thermosetting device via the transmission component 17. The transmission component can be a conventional transmission structure such as a lead screw and nut, or a gear and rack.

[0108] In some embodiments, the composite material thermosetting apparatus further includes guide posts 19, which are located at the bottom of the housing and arranged vertically. A guide hole is provided at the bottom of the mold mounting part, and the guide post is positioned within the guide hole. This guide post is used to guide the mold when the mold lifting mechanism drives the mold mounting part to move vertically, preventing lateral movement of the mold. Multiple guide posts can be provided, arranged at equal intervals at the bottom of the housing.

[0109] Specifically, one motor 13 is connected to two drive shafts 16 via a reversing gear set 15. The two drive shafts 16 are each connected to a telescopic shaft 18. The telescopic shafts are connected to two different positions of the mold mounting part, which makes the mold more stable and reliable when it moves vertically.

[0110] In some implementations, such as Figure 7 , Figure 8 As shown, a first pressure plate mechanism and a second pressure plate mechanism are respectively provided on both sides of the mold mounting part 12;

[0111] The first pressure plate mechanism includes:

[0112] First pressure plate platform 20;

[0113] The first pressure plate 21 is hinged to the first pressure plate platform 20, and the first pressure plate 21 can be pressed or opened relative to the first pressure plate platform 20.

[0114] The second pressure plate mechanism includes:

[0115] Second pressure plate platform 28;

[0116] The second pressure plate 29 is hinged to the second pressure plate platform, and the second pressure plate can be pressed or opened relative to the second pressure plate platform.

[0117] For large-sized, thin composite material products, after they are placed on the mold, the two sides that are outside the mold in the direction perpendicular to the axis are prone to drooping before curing, which will cause the product edges to bend and the product quality to be unqualified. To address this, pressure plate mechanisms are set on both sides of the mold. After the preform is placed on the mold, its two sides can be spread out and pressed and fixed by the pressure plate mechanisms to prevent it from drooping due to gravity.

[0118] Furthermore, the first pressure plate 21 is composed of multiple first sub-pressure plates, which are arranged sequentially along the axial (length) direction of the composite material molding die. Each first sub-pressure plate is hinged to the first pressure plate platform, and can adjust a section of the preform to be pressed, resulting in a better pressing effect.

[0119] Furthermore, the second pressure plate 29 is composed of multiple second sub-pressure plates, and multiple first sub-pressure plates are arranged sequentially along the axial (length) direction of the composite material molding die. Each first sub-pressure plate is hinged to the first pressure plate platform, and can adjust a section of the preform to be pressed, resulting in a better pressing effect.

[0120] In some embodiments, the first pressure plate mechanism further includes: a first horizontal moving mechanism, disposed in the housing and connected to the first pressure plate platform 20, the first horizontal moving mechanism enabling the first pressure plate platform 20 to move horizontally in a direction perpendicular to the axial direction of the composite material molding die;

[0121] The second pressure plate mechanism also includes a second horizontal moving mechanism, which is located in the housing and connected to the second pressure plate platform. The second horizontal moving mechanism can make the second pressure plate platform move horizontally in a direction perpendicular to the axial direction of the composite material molding die.

[0122] As the precast body gradually shrinks during the curing process, the pressure plate mechanisms on both sides drive the sides of the precast body to move towards the center continuously, in order to adapt to the shrinkage of the precast body.

[0123] In some embodiments, the composite material thermosetting apparatus further includes a lid-opening mechanism, which includes:

[0124] The longitudinal moving mechanism 31 is mounted on the housing 1;

[0125] The lateral moving mechanism 30 is connected to the moving end of the longitudinal moving mechanism, and the moving end of the lateral moving mechanism is connected to the cover 4.

[0126] The cover 4 can move vertically under the drive of the longitudinal moving mechanism, and can move horizontally under the drive of the transverse moving mechanism.

[0127] After the product has cured, the cover can be lifted by the longitudinal moving mechanism and then moved horizontally by the lateral moving mechanism until the opening end of the box is opened.

[0128] In some implementations, the longitudinal movement mechanism may be a linear motor, but is not limited to a linear motor.

[0129] In some implementations, the lateral movement mechanism may be a linear motor, but is not limited to a linear motor.

[0130] In some embodiments, the air intake pipe 8 includes a first air intake pipe section 81 and a second air intake pipe section 82. The first air intake pipe section 81 is fixedly connected to the cover 4, and one end of the first air intake pipe section 81 is connected to the buffer chamber 44. The second air intake pipe section 82 is fixedly connected to the housing 1, and one end of the second air intake pipe section 82 is connected to the air outlet of the hot air blower 6, while the other end is movably connected to the first air intake pipe section 81. The movable connection structure facilitates the separation of the first air intake pipe section 81 and the second air intake pipe section 82 when the longitudinal moving mechanism lifts the cover. When the cover falls, the two are directly connected without the need to connect the air intake pipe again, making operation more convenient.

[0131] In some embodiments, a plurality of locking mechanisms are also provided between the housing 1 and the cover 4;

[0132] like Figure 9 As shown, the locking mechanism includes:

[0133] The first locking piece 22 is provided on the cover 4, and the first locking piece 22 is provided with a first locking hole;

[0134] The second locking plate 23 is provided on the housing 1, and the second locking plate 23 has a second locking hole at the position corresponding to the first locking hole;

[0135] Telescopic cylinder 24;

[0136] Locking shaft 25 is connected to the telescopic shaft of the telescopic cylinder. Locking shaft 25 can be inserted into or pulled out of the first locking hole and the second locking hole when the telescopic cylinder is activated.

[0137] After the cover is closed, the telescopic cylinder drives the locking shaft to move and insert into the first and second locking holes, thereby locking the cover to the box and ensuring the vacuum during the curing process.

[0138] Multiple locking mechanisms are located on both sides of the box, with 3-5 locking mechanisms on each side to lock the lid on both sides and ensure a tight seal.

[0139] In some embodiments, the composite material thermosetting device further includes a base 26 and pulleys 27, with the base 26 located at the bottom of the housing 1 and the pulleys 27 located at the bottom of the base 26. This facilitates the movement of the entire device.

[0140] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A composite material thermosetting device, characterized in that, include: The box body is a first cavity with an open top, and a composite material molding die can be placed in the first cavity; A cover is provided to close the opening of the box body; the cover includes: an upper cover, a side wall, and a first rubber plate, the upper cover is located at the top of the side wall, the first rubber plate is located at the bottom of the side wall, and the upper cover, the side wall, and the first rubber plate form a closed second cavity; A hot air blower is used to generate hot air; Multiple diversion pipes are disposed in the second cavity. The diversion pipes are connected to the air outlet of the hot air blower through air inlet pipes. The diversion pipes are provided with multiple air outlets, which are connected to the second cavity. An air outlet duct, one end of which is connected to the second cavity and the other end of which is connected to the outside; A vacuum pumping device, which is connected to the first cavity via a pipeline; The sidewall includes: Ring-shaped metal profile; A first annular rubber is disposed on the top of the annular metal profile and wraps around the upper part of the annular metal profile; A second annular rubber is disposed at the bottom of the annular metal profile and wraps around the lower part of the annular metal profile; the bottom of the second annular rubber is bonded to the first rubber plate; The upper sidewall of the annular metal profile is provided with a plurality of first annular protruding teeth, and the inner sidewall of the first annular rubber is provided with a plurality of first annular concave teeth, the positions of the first annular concave teeth and the first annular protruding teeth are corresponding, and the first annular concave teeth are embedded in the first annular protruding teeth. The lower sidewall of the annular metal profile is provided with a plurality of second annular protruding teeth, and the inner sidewall of the second annular rubber is provided with a plurality of second annular concave teeth, the second annular concave teeth being positioned corresponding to the second annular protruding teeth, and the second annular concave teeth being embedded in the second annular protruding teeth.

2. The composite material thermosetting apparatus according to claim 1, characterized in that: The bottom of the annular metal profile is provided with an annular groove, and the annular groove is filled with an annular airbag. After the annular airbag expands, it presses against the second annular rubber.

3. The composite material thermosetting apparatus according to claim 1, characterized in that: The cover also includes a buffer chamber located on the outside of the side wall; the side wall has multiple through holes that communicate with the buffer chamber, and the buffer chamber is connected to the air outlet of the hot air blower through the air inlet pipe; multiple diverter pipes are arranged in parallel, with one end of each diverter pipe closed and the other end connected to the through hole.

4. The composite material thermosetting apparatus according to claim 1, characterized in that, Also includes: The mold lifting mechanism is located at the bottom of the first cavity; A mold mounting part is used to mount a composite material molding mold. The mold mounting part is connected to the lifting end of the mold lifting mechanism, and the mold lifting mechanism drives the mold mounting part to move up and down in the vertical direction.

5. The composite material thermosetting apparatus according to claim 4, characterized in that: The mold mounting part is provided with a first pressure plate mechanism and a second pressure plate mechanism on both sides respectively; The first pressure plate mechanism includes: First pressure plate platform; The first pressure plate is hinged to the first pressure plate platform, and the first pressure plate can be pressed or opened relative to the first pressure plate platform. A first horizontal moving mechanism is disposed in the housing and connected to the first pressure plate platform. The first horizontal moving mechanism can make the first pressure plate platform move horizontally in a direction perpendicular to the axial direction of the composite material molding die. The second pressure plate mechanism includes: Second pressure plate platform; The second pressure plate is hinged to the second pressure plate platform, and the second pressure plate can be pressed or opened relative to the second pressure plate platform; The second horizontal moving mechanism is located in the housing and connected to the second pressure plate platform. The second horizontal moving mechanism can make the second pressure plate platform move horizontally in a direction perpendicular to the axial direction of the composite material molding die.

6. The composite material thermosetting apparatus according to claim 1, characterized in that, Also includes: It also includes a lid-opening mechanism, which includes: A longitudinal moving mechanism is provided on the housing; A lateral moving mechanism is connected to the moving end of the longitudinal moving mechanism, and the moving end of the lateral moving mechanism is connected to the cover. The cover can move vertically under the drive of the longitudinal moving mechanism, and can move horizontally under the drive of the transverse moving mechanism.

7. The composite material thermosetting apparatus according to claim 1, characterized in that, The cover also includes: A second rubber sheet is disposed above the upper cover; The outer cover fits over the second rubber plate.

8. The composite material thermosetting apparatus according to claim 1, characterized in that: Multiple locking mechanisms are also provided between the box body and the cover body; The locking mechanism includes: A first locking plate is disposed on the cover, and the first locking plate is provided with a first locking hole; A second locking plate is provided on the housing, and a second locking hole is provided on the second locking plate at a position corresponding to the first locking hole; Telescopic cylinder; A locking shaft is connected to the telescopic shaft of the telescopic cylinder, and the locking shaft can be inserted into or pulled out from the first locking hole and the second locking hole when the telescopic cylinder is activated.

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