Carbon fiber product forming die

Abstract

The utility model discloses a carbon fiber product forming die, which relates to the technical field of carbon fiber products, and comprises a working table and a die core, the working table is provided with a die holder, the plane of the working table vertical to the die holder is provided with a plurality of guide posts, the plurality of guide posts are provided with liftable pressing plates, the die core comprises an upper die and a lower die, the lower die is arranged on the die holder, the upper die is buckled on the lower die, the upper die and the lower die define a cavity, the upper die is provided with an upper die heat pipeline with a first air inlet and a first air outlet, the lower die is provided with a lower die heat pipeline with a second air inlet and a second air outlet, and the upper die heat pipeline and the lower die heat pipeline are arranged around the cavity; according to the technical scheme provided by the utility model, the conical product and the heat pipeline can be adaptively adjusted according to the appearance structure of the conical product, so that the local heating uniformity of the product is ensured, the problem of non-uniform heat conduction of the conical product is solved, and the energy consumption is also reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of carbon fiber products, in particular to a carbon fiber product forming die. Background Art

[0002] Carbon fiber products, as advanced composite materials, occupy a vital position in modern industry due to their exceptional physical properties and chemical stability. These products combine carbon fibers with substrates such as resins to create materials that offer high strength, low weight, and excellent heat and corrosion resistance. They play a key role in aerospace structural components, lightweight high-end automotive bodies, wind turbine blades, and high-end sports equipment, continuously driving technological advancement and innovative applications.

[0003] Carbon fiber composite products are typically produced using hot press molding, where the upper mold is concave and the lower mold is convex, with the upper mold having a larger inner diameter than the lower mold. In related technologies, the preform is placed in the mold cavity and the mold is closed. The mold is then placed on a die holder, and the upper pressure plate is controlled to descend to firmly press the lower mold. The preform is pressurized, and the die holder and pressure plate are heated, transferring heat energy to the mold. The carbon fiber product is cured at high temperature, and the product is formed.

[0004] When using the above-mentioned heating and hot pressing method, when the product volume is too large or the product is tapered as a whole, since the heat energy is transferred to the forming mold by the upper and lower furnace plates (i.e., the pressing plate and the mold holder), there will be problems of high energy consumption during molding, uneven heat conduction due to the overly thick mold design, and inconsistent heat conduction rate for tapered products. Utility Model Content

[0005] The main purpose of the utility model is to provide a carbon fiber product forming mold, aiming to provide a carbon fiber product forming mold with better hot pressing forming effect and lower energy consumption for conical carbon fiber products.

[0006] To achieve the above-mentioned purpose, the carbon fiber product forming mold proposed in the present invention includes:

[0007] A workbench, wherein the workbench is provided with a die-setting seat, and the workbench is provided with a plurality of guide columns perpendicular to the plane of the die-setting seat, and the plurality of guide columns are provided with liftable pressing plates; and

[0008] The mold core includes an upper mold and a lower mold, the lower mold is placed on the mold base, the upper mold is buckled on the lower mold, the upper mold and the lower mold are combined to form a cavity, the upper mold is provided with an upper mold heat pipe with a first air inlet and a first air outlet, the lower mold is provided with a lower mold heat pipe with a second air inlet and a second air outlet, and the upper mold heat pipe and the lower mold heat pipe are both arranged around the cavity.

[0009] In one embodiment, the upper mold is provided with at least two upper mold heat pipes, each of the upper mold heat pipes has a plurality of upper mold main heating pipe sections, and each of the upper mold main heating pipe sections is arranged close to the mold cavity; and / or

[0010] The lower mold is provided with at least two lower mold heat pipes, each of the lower mold heat pipes has a plurality of lower mold main heating pipe sections, and each of the lower mold main heating pipe sections is arranged close to the mold cavity.

[0011] In one embodiment, a first opening and a second opening are formed at both ends of the cavity, respectively, the diameter of the first opening is larger than the diameter of the second opening, and the cavity gradually shrinks from the first opening to the second opening;

[0012] The upper mold main heating pipe section and the lower mold main heating pipe section are both bent from the first opening to the second opening.

[0013] In one embodiment, each of the lower mold heat pipes is provided with three of the upper mold main heating pipe sections, and each of the lower mold heat pipes is provided with three of the lower mold main heating pipe sections, and the upper mold main heating pipe sections and the lower mold main heating pipe sections are both arranged around the mold cavity.

[0014] In one embodiment, each of the upper mold main heating pipe sections passes through the upper mold, and plugs are provided at both ends of the upper mold main heating pipe section; and / or

[0015] Each of the lower mold main heating pipe sections passes through the lower mold, and plugs are provided at both ends of the lower mold main heating pipe section.

[0016] In one embodiment, the workbench is provided with four guide columns, and the four guide columns are respectively arranged at the four corners of the mold base. The four guide columns are provided with a top plate at one end away from the workbench, and the top plate is provided with a driving cylinder. The driving end of the driving cylinder is connected to the pressure plate and is used to drive the pressure plate to rise and fall.

[0017] In one embodiment, the workbench is provided with a guide rail, and the mold setting base is slidably arranged on the guide rail.

[0018] In one embodiment, a rack is provided at the lower portion of the guide rail, and the mold base is provided with a drive motor and a transmission rod, the transmission rod is rotatably provided on the mold base, and the transmission rod is provided with a coaxial first gear and a second gear, the first gear is engaged with the drive end of the drive motor, and the second gear is engaged with the rack.

[0019] In one embodiment, the mold base is provided with two clamping rings, bearings are provided in the two clamping rings, and the transmission rod is passed through the inner holes of the bearings.

[0020] In one embodiment, a limit block is provided at one end of the guide rail away from the pressing plate, and a buffer structure is provided on the die-setting base facing the limit block.

[0021] The technical solution of the present utility model proposes a carbon fiber product forming mold, which includes a workbench and a mold core, the workbench is provided with a mold base, and a plurality of guide columns are provided on the plane of the workbench perpendicular to the mold base, and the plurality of guide columns are provided with a liftable pressure plate, and the mold core is placed on the mold base and is located between the mold base and the pressure plate, and the upper mold and the lower mold are respectively provided with an upper mold heat pipe and a lower mold heat pipe, and the upper mold heat pipe and the lower mold heat pipe are both arranged around the cavity. The difference between this solution and the upper and lower furnace plates in heat transfer is that this solution transports high-temperature water vapor in the upper mold heat pipe and the lower mold heat pipe, and since the heat pipe is close to the cavity, the heat transfer effect is good and the heat loss is small. For conical products, the heat pipe can also be adaptively adjusted according to the external structure of the conical product, so as to ensure that the product is locally heated evenly, solve the problem of uneven heat conduction of the conical product, and reduce energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0023] Figure 1 This is a structural schematic diagram of an embodiment of a carbon fiber product forming mold provided by the present invention;

[0024] Figure 2 for Figure 1 Schematic diagram of the structure of the carbon fiber product forming mold from another angle;

[0025] Figure 3 for Figure 2 A partial enlarged view of point A in the middle;

[0026] Figure 4 for Figure 1 Schematic diagram of the structure of the middle mold core;

[0027] Figure 5 This is a structural diagram of the mold core from another angle;

[0028] Figure 6 This is a schematic diagram of the structure of the upper mold heat pipe in the upper mold;

[0029] Figure 7 This is a schematic diagram of the structure of the heat pipe in the lower mold;

[0030] Figure 8 This is a cross-sectional view of the mold core.

[0031] Description of Figure Numbers:

[0032] 100. Carbon fiber product forming mold; 1. Workbench; 11. Mold holder; 111. Drive rod; 112. Drive motor; 113. First gear; 114. Second gear; 115. Buffer structure; 12. Guide rod; 121. Press plate; 122. Top plate; 123. Drive cylinder; 13. Guide rail; 14. Rack; 15. Limit block; 2. Mold core; 21. Upper mold; 211. Upper mold heat pipe; 211a. Upper mold main heating pipe section; 212. First air inlet; 213. First air outlet; 214. Plug; 22. Lower mold; 221. Lower mold heat pipe; 221a. Lower mold main heating pipe section; 2a. Cavity; 2a1. First opening; 2a2. Second opening.

[0033] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0035] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0036] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. 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 this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0037] The utility model proposes a carbon fiber product forming die, which aims to provide a carbon fiber product forming die with better hot pressing forming effect and lower energy consumption for conical carbon fiber products. Figures 1 to 8 This is a structural schematic diagram of an embodiment of a carbon fiber product forming mold provided by the present invention.

[0038] Please refer to Figures 1 to 8 The utility model proposes a carbon fiber product forming mold 100, including a workbench 1 and a mold core 2, the workbench 1 is provided with a mold base 11, the workbench 1 is provided with a plurality of guide columns on a plane perpendicular to the mold base 11, and the plurality of guide columns are provided with a liftable pressure plate 121, the mold core 2 includes an upper mold and a lower mold, the lower mold is placed on the mold base 11, the upper mold is buckled on the lower mold, the upper mold and the lower mold enclose a cavity 2a, the upper mold is provided with an upper mold heat pipe 211 having a first air inlet 212 and a first air outlet 213, the lower mold is provided with a lower mold heat pipe 221 having a second air inlet and a second air outlet, and the upper mold heat pipe 211 and the lower mold heat pipe 221 are both arranged around the cavity 2a.

[0039] The technical solution of the present utility model proposes a carbon fiber product forming mold 100, which includes a workbench 1 and a mold core 2. The workbench 1 is provided with a mold base 11. The workbench 1 is provided with a plurality of guide columns on a plane perpendicular to the mold base 11. The plurality of guide columns are provided with a liftable pressure plate 121. The mold core 2 is placed on the mold base 11 and is located between the mold base 11 and the pressure plate 121. The upper mold and the lower mold are respectively provided with an upper mold heat pipe 211 and a lower mold heat pipe 221. The upper mold heat pipe 211 and the lower mold heat pipe 221 are both arranged around the cavity 2a. The difference between this solution and the upper and lower furnace plates in heat transfer is that this solution transports high-temperature water vapor in the upper mold heat pipe 211 and the lower mold heat pipe 221. Since the heat pipe is close to the cavity 2a, the heat transfer effect is good and the heat loss is small. For conical products, the heat pipe can also be adaptively adjusted according to the external structure of the conical product, so as to ensure that the product is locally heated evenly, solves the problem of uneven heat conduction of conical products, and reduces energy consumption.

[0040] In actual production practice, high-temperature water vapor is introduced into the upper mold heat pipe 211 and the lower mold heat pipe 221, thereby heating the cavity 2a and the carbon fiber material in the cavity 2a. Considering that the product cavity 2a in this embodiment is relatively large, more heating pipes are required. In one embodiment, the upper mold is provided with at least two upper mold heat pipes 211, and the lower mold is consistent with the upper mold. Each heat pipe has an independent air inlet and air outlet, that is, the upper mold is provided with at least two air inlets and at least two air outlets. Each upper mold heat pipe 211 is provided with multiple upper mold main heating pipe sections 211a. This solution does not limit the number of upper mold main heating pipe sections 211a in each upper mold heat pipe 211. In this embodiment, each upper mold heat pipe 211 is provided with 3 upper mold main heating pipe sections 211a, and the total number of two upper mold heat pipes 211 is 2. The six upper mold main heating pipe sections 211a are arranged in an interlaced manner and all surround the mold cavity 2a, extending from the first opening 2a1 of the mold cavity 2a to the second opening 2a2 of the mold cavity 2a. When air is introduced, air is introduced into the upper mold at the same time through the two first air inlets 212, so as to ensure that the water vapor fills the entire heat pipe as soon as possible, so that the mold cavity 2a can be heated rapidly; correspondingly, each lower mold heat pipe 221 is provided with three lower mold main heating pipe sections 221a, and the total six lower mold main heating pipe sections 221a of the two lower mold heat pipes 221 are arranged in an interlaced manner and all surround the mold cavity 2a, extending from the first opening 2a1 of the mold cavity 2a to the second opening 2a2 of the mold cavity 2a. The lower mold is provided with a second air inlet and a second air outlet. Air is introduced through the second air inlet and exhausted through the second air outlet. A total of two second air inlets and two second air outlets are provided.

[0041] In order to provide a better heating effect and reduce heating energy consumption, the upper mold main heating pipe section 211a and the lower mold main heating pipe section 221a are both arranged around the cavity 2a. In this embodiment, the cavity 2a is a truncated cone, gradually shrinking from the first opening 2a1 to the second opening 2a2 and forming an arc on the surface. Correspondingly, the upper mold main heating pipe section 211a and the lower mold main heating pipe section 221a are also bent from the first opening 2a1 to the second opening 2a2. The upper mold has a total of 6 upper mold main heating pipe sections 211a and the lower mold has a total of 6 lower mold main heating pipe sections 221a, a total of 12 main heating pipe sections evenly spaced around the cavity 2a and arranged close to the cavity 2a. When water vapor flows through the 12 main heating pipe sections, the heat will be transferred to the mold body to heat the carbon fiber material in the cavity 2a to form it.

[0042] In one embodiment of the present invention, the upper mold heat pipe 211 and the lower mold heat pipe 221 are both processed inside the mold by CNC processing, that is, they are an integrally formed structure with the mold. In order to enable the upper mold main heating pipe section 211a and the lower mold main heating pipe section 221a to be better processed, the upper mold main heating pipe section 211a and the lower mold main heating pipe section 221a are directly processed at the ends of the upper mold and the lower mold by drilling according to the outer surface of the cavity 2a. Finally, plugs 214 are respectively provided at both ends of the upper mold main heating pipe section 211a and the lower mold main heating pipe section 221a for sealing.

[0043] In order to press the upper mold and the lower mold together, the workbench 1 is provided with four guide posts, which are respectively arranged at the four corners of the mold base 11. For details, please refer to Figure 1 and Figure 2 A top plate 122 is provided at one end of the four guide columns away from the workbench 1, and a driving cylinder 123 is provided on the top plate 122. The driving end of the driving cylinder 123 is connected to the pressing plate 121 and is used to drive the pressing plate 121 to rise and fall. By controlling the driving cylinder 123 to drive the pressing plate 121 to descend, the pressing plate 121 can press the mold down, so that the upper mold and the lower mold are pressed together, thereby making the product molding effect in the cavity 2a better.

[0044] In view of the large mass of the mold, in order to facilitate the handling, transportation and transfer of the mold, the mold base 11 is designed to be movable. For details, please refer to Figure 2 and Figure 3The die-setting base 11 is slidably mounted on the workbench 1 via a guide rail 13. A rack 14 is provided at the bottom of the guide rail 13. The die-setting base 11 is equipped with a drive motor 112 and a transmission rod 111. The transmission rod 111 is rotatably mounted on the die-setting base 11. The transmission rod 111 is provided with a coaxial first gear 113 and a second gear 114. The first gear 113 meshes with the drive end of the drive motor 112, and the second gear 114 meshes with the rack 14. The die-setting base 11 is provided with two retaining rings, each containing a bearing. The transmission rod 111 is inserted into the inner hole of the bearing. The drive motor 112 drives the transmission rod 111 to rotate, thereby driving the die-setting base 11 to move on the workbench 1. A limit stop 15 is also provided on the end of the guide rail 13 away from the pressure plate 121. The die-setting base is provided with a buffer structure 115 facing the limit stop 15. The buffer structure 115 comprises two abutting wheels, thereby better protecting the die-setting base.

[0045] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A carbon fiber product forming mold, characterized in that: include: A workbench, wherein the workbench is provided with a die-setting seat, and the workbench is provided with a plurality of guide columns perpendicular to the plane of the die-setting seat, and the plurality of guide columns are provided with liftable pressing plates; and The mold core includes an upper mold and a lower mold, the lower mold is placed on the mold base, the upper mold is buckled on the lower mold, the upper mold and the lower mold are combined to form a cavity, the upper mold is provided with an upper mold heat pipe with a first air inlet and a first air outlet, the lower mold is provided with a lower mold heat pipe with a second air inlet and a second air outlet, and the upper mold heat pipe and the lower mold heat pipe are both arranged around the cavity.

2. The carbon fiber product forming mold according to claim 1, characterized in that: The upper mold is provided with at least two upper mold heat pipes, each of the upper mold heat pipes has a plurality of upper mold main heating pipe sections, and each of the upper mold main heating pipe sections is arranged close to the mold cavity; and / or The lower mold is provided with at least two lower mold heat pipes, each of the lower mold heat pipes has a plurality of lower mold main heating pipe sections, and each of the lower mold main heating pipe sections is arranged close to the mold cavity.

3. The carbon fiber product forming mold according to claim 2, characterized in that: A first opening and a second opening are formed at both ends of the cavity, respectively, the diameter of the first opening is larger than the diameter of the second opening, and the cavity gradually shrinks from the first opening to the second opening; The upper mold main heating pipe section and the lower mold main heating pipe section are both bent from the first opening to the second opening.

4. The carbon fiber product forming mold according to claim 2, characterized in that: Each of the lower mold heat pipes is provided with three of the upper mold main heating pipe sections, and each of the lower mold heat pipes is provided with three of the lower mold main heating pipe sections. The upper mold main heating pipe sections and the lower mold main heating pipe sections are both arranged around the mold cavity.

5. The carbon fiber product forming mold according to claim 4, characterized in that: Each of the upper mold main heating pipe sections passes through the upper mold, and both ends of the upper mold main heating pipe section are provided with plugs; and / or Each of the lower mold main heating pipe sections passes through the lower mold, and plugs are provided at both ends of the lower mold main heating pipe section.

6. The carbon fiber product forming die according to any one of claims 1 to 5, wherein: The workbench is provided with four guide columns, which are respectively arranged at the four corners of the mold base. A top plate is provided at one end of the four guide columns away from the workbench. The top plate is provided with a driving cylinder. The driving end of the driving cylinder is connected to the pressure plate and is used to drive the pressure plate to rise and fall.

7. The carbon fiber product forming die according to any one of claims 1 to 5, wherein: The workbench is provided with a guide rail, and the die-setting base is slidably arranged on the guide rail.

8. The carbon fiber product forming mold according to claim 7, wherein: A rack is provided at the lower portion of the guide rail, and the die-setting base is provided with a drive motor and a transmission rod. The transmission rod is rotatably provided on the die-setting base, and the transmission rod is provided with a coaxial first gear and a second gear. The first gear is engaged with the drive end of the drive motor, and the second gear is engaged with the rack.

9. The carbon fiber product forming mold according to claim 8, wherein: The mold-setting seat is provided with two clamping rings, bearings are provided in the two clamping rings, and the transmission rod is passed through the inner holes of the bearings.

10. The carbon fiber product forming die according to claim 7, wherein: A limit block is provided at one end of the guide rail away from the pressing plate, and a buffer structure is provided on the die-setting base facing the limit block.

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