A mold for manufacturing a functionally graded hybrid reinforced composite

Abstract

The utility model discloses a kind of mould for manufacturing function gradient hybrid reinforced composite material, comprising: the precision locking structure of the mould mechanism is slidably fitted with the T-shaped groove of horizontal sliding block and vertical support column, the independent gradient control of fiber distribution and layer thickness is realized;The T-shaped boss of horizontal sliding block bottom end and the T-shaped groove of bottom plate horizontal sliding slot form the sliding fit of " boss + recess groove", the connecting column of vertical support column outer wall is connected in screw thread with top plate vertical guide hole, cooperate the rotation drive of bottom adjusting nut, the precision adjustment of top plate vertical direction is realized;This structure design makes the distribution of fiber in sliding block fiber limiting groove can be independently adjusted by the movement of horizontal sliding block, while interlaminar superposition accuracy is adjusted by the scale of vertical support column and is jointly guaranteed by guide hole wear-resistant bushing;Compared with prior art, dynamic adjustment is enhanced, so that the transverse performance gradient and longitudinal gradient of composite material are better adjusted.

Description

Technical Field

[0001] This utility model relates to a mold, and more particularly to a mold for manufacturing functionally graded hybrid reinforced composite materials. Background Technology

[0002] Functionally graded hybrid composites (FG-HFRPCs) are suitable for applications such as aerospace and automotive, which have specific graded requirements for material properties. Existing molds, due to their fixed rigid structure, cannot dynamically adjust fiber partition boundaries or control thickness changes during manufacturing, leading to uncontrolled fiber distribution in FG-HFRPCs. Within the same layer, traditional molds lack horizontally movable sliders and vertically adjustable support devices, making it impossible to accurately divide different fiber regions (such as the carbon fiber central region and the glass fiber edge region), resulting in fiber overlap or gaps. During multi-layer layup, their static design is difficult to adapt to the changing fiber ratios and pressure requirements of each layer, causing interlayer misalignment or uneven density. Especially when hybrid fibers (such as high-stiffness carbon fibers and low-friction natural fibers) are co-laid, the lack of mold guidance and locking mechanisms makes different fibers prone to slippage and entanglement, ultimately leading to interface defects and a decline in mechanical properties. Utility Model Content

[0003] This invention overcomes the shortcomings of the prior art and provides a mold for manufacturing functionally graded hybrid reinforced composite materials.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a mold for manufacturing functionally graded hybrid reinforced composite materials, comprising: a base plate, two horizontal grooves symmetrically opened on the top surface along the length direction, and a waste collection groove provided at the bottom of the top of the horizontal grooves;

[0005] The top plate has vertical guide holes on its bottom surface;

[0006] At least one set of horizontal adjustment components, including a slider and an adjustment handle, wherein a boss is connected to the bottom end of the slider and slides in a horizontal groove, and a fiber limiting groove is provided on the surface of the slider;

[0007] At least one set of vertical adjustment components includes a support column fixedly installed on the top of the base plate, a connecting column sleeved on the outer wall of the support column, the connecting column being threadedly connected to the vertical guide hole of the top plate, an adjusting nut being installed on the bottom outer wall of the connecting column, and a fixing nut being provided on the top of the connecting column; the adjusting nut is used to drive the connecting column to rotate within the vertical guide hole.

[0008] The heating assembly includes at least one heating element embedded in the surface of the slider, a temperature sensor disposed on the lower surface of the top plate, and a temperature controller connected to the temperature sensor and the heating element.

[0009] In a preferred embodiment of this utility model, the boss is a T-shaped groove structure with a width of 15mm and a depth of 10mm, and is symmetrically distributed along the length of the base plate.

[0010] In a preferred embodiment of this utility model, the surface of the slider is provided with a fiber limiting groove with a depth of 5mm and 45° chamfers on both sides of the groove opening.

[0011] In a preferred embodiment of this utility model, the adjustment handles are symmetrically arranged at both ends of the slider sidewall.

[0012] In a preferred embodiment of this utility model, the temperature sensor measures temperature and is set with a temperature threshold of 120-140℃.

[0013] In a preferred embodiment of this invention, when the temperature sensor detects a temperature below 120-140°C, it sends a heating command to the temperature controller, which then sends a command to the heating element, causing the heating element to operate and raise the temperature. When the temperature exceeds 140°C, the heating element is turned off, and the temperature continues to be monitored over time using the temperature sensor.

[0014] In a preferred embodiment of this utility model, the number of the horizontal adjustment components is 1-2 sets, which are evenly distributed along the width direction of the base plate.

[0015] In a preferred embodiment of this utility model, the number of vertical adjustment components is 4-8 sets, which are evenly distributed along the circumference of the top plate.

[0016] In a preferred embodiment of this invention, the temperature sensor is a thermocouple or a resistance temperature detector (RTD).

[0017] In a preferred embodiment of this invention, a pressure sensor is installed at the bottom of the fiber limiting groove of the slider to monitor the fiber layer pressure in real time.

[0018] This utility model solves the defects existing in the background technology, and has the following beneficial effects:

[0019] (1) The mold mechanism achieves independent gradient control of fiber distribution and layer thickness through the sliding fit of the T-slot of the horizontal slider and the precision locking structure of the vertical support column; the T-shaped boss at the bottom of the horizontal slider and the T-slot of the horizontal slide groove of the bottom plate form a sliding fit of "boss + groove", which only allows the slider to move in the horizontal direction, avoiding the slider to shift laterally or fall off during the pressurization process; the connecting column on the outer wall of the vertical support column is threaded to the vertical guide hole of the top plate, and with the rotation drive of the bottom adjusting nut, the vertical adjustment of the top plate is achieved; this structural design allows the distribution of fibers in the fiber limiting groove of the slider to be independently adjusted by the movement of the horizontal slider, while the interlayer lamination accuracy is jointly guaranteed by the scale adjustment of the vertical support column and the wear-resistant bushing of the guide hole; compared with the existing technology, the dynamic adjustment is enhanced, and the transverse performance gradient and longitudinal gradient of the composite material are better adjusted.

[0020] (2) The linkage design of the embedded heating element in the bottom plate and the temperature sensor in the top plate creates a closed-loop temperature system of "bottom heating - top monitoring", which effectively improves the temperature uniformity of the curing process. The heating element is embedded in the surface of the slider, and the temperature sensor on the lower surface of the top plate monitors the curing temperature in real time. When the temperature is below the threshold of 120-140℃, the temperature controller controls the heating element to work and raise the temperature. When the temperature is above the threshold, the heating element is turned off and continuously monitored, forming a precise temperature regulation mechanism. This design effectively controls the curing temperature fluctuation within a reasonable range. Compared with the existing technology, it improves the crosslinking uniformity of the resin and avoids the interfacial stress concentration caused by the temperature gradient between layers, thereby improving the overall mechanical properties of the composite material.

[0021] (3) The distributed layout of the horizontal and vertical adjustment components, combined with the embedded locking structure of the adjustment bolts, forms a gradient adjustment system that can respond quickly and supports traceable management of process parameters. The horizontal adjustment components (1-2 groups) are evenly distributed along the width of the bottom plate, covering different areas such as the left, middle, and right. By pulling the adjustment handle to move the slider, the fiber distribution ratio of each area can be adjusted independently. The vertical adjustment components (4-8 groups) are evenly distributed along the circumference of the top plate. By rotating the adjustment nut, the top plate can be raised or lowered synchronously to ensure the force balance of the layer thickness adjustment in each area and avoid deformation of the bottom plate caused by local stress concentration. In addition, the pressure sensor at the bottom of the fiber limiting groove of the slider can monitor the fiber layer pressure in real time. Combined with the temperature data recorded by the temperature controller, multi-dimensional parameter recording of fiber distribution, layer thickness adjustment, and curing conditions is realized. Compared with the existing technology, this structure not only supports the rapid switching of multi-area gradients, but also provides a reliable basis for process optimization and quality traceability through data linkage recording, further improving the intelligence and traceability of production. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0023] Figure 1 This is a perspective structural diagram of a preferred embodiment of the present invention;

[0024] Figure 2 This is a cross-sectional view of a preferred embodiment of the present invention;

[0025] Figure 3 This is a partial view of a preferred embodiment of the present invention;

[0026] In the diagram: 1. Base plate; 11. Horizontal slide; 115. Waste liquid collection tank; 2. Top plate; 21. Vertical guide hole; 3. Horizontal adjustment component; 31. Slider; 32. Adjustment handle; 311. Fiber limiting groove; 4. Vertical adjustment component; 41. Support column; 42. Adjusting nut; 43. Connecting column; 5. Heating component. Detailed Implementation

[0027] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. These drawings are simplified schematic diagrams, which are only used to illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0028] like Figure 1 As shown, a mold for manufacturing functionally graded hybrid reinforced composite materials includes: a base plate 1, two horizontal grooves 11 symmetrically opened on the top surface along the length direction, and a waste collection groove 115 provided at the bottom of the horizontal grooves 11.

[0029] Top plate 2, with a vertical guide hole 21 on the bottom surface;

[0030] At least one set of horizontal adjustment components 3, including a slider 31 and an adjustment handle 32, wherein a boss is connected to the bottom end of the slider 31 and slides in cooperation with the horizontal slide groove 11, and a fiber limiting groove 311 is provided on the surface of the slider 31;

[0031] like Figure 3 As shown, at least one set of vertical adjustment components 4 includes a support column 41 fixedly installed on the top of the base plate 1, a connecting column 43 sleeved on the outer wall of the support column 41, the connecting column 43 being threadedly connected to the vertical guide hole 21 of the top plate 2, an adjusting nut 42 installed on the bottom outer wall of the connecting column 43, and a fixing nut provided on the top of the connecting column 43; the adjusting nut 42 is used to drive the connecting column 43 to rotate within the vertical guide hole 21.

[0032] The heating assembly 5 includes at least one heating element embedded in the surface of the slider 31, a temperature sensor disposed on the lower surface of the top plate 2, and a temperature controller connected to the temperature sensor and the heating element.

[0033] Specifically, a three-dimensional synergistic mechanism is constructed, which integrates "horizontal adjustment of fiber distribution + vertical adjustment of layer thickness control + heat curing of material crosslinking," directly addressing the core requirements of functionally graded composite materials: "lateral composition gradient + longitudinal layer thickness gradient + curing uniformity." Heating component 5 is embedded in the bottom plate and linked to the top plate temperature sensor to achieve closed-loop temperature control through "bottom heating + top monitoring," avoiding the uneven temperature caused by traditional external heating.

[0034] More specifically, the support column 41 is fixed to the top of the base plate 1, and the externally fitted adjusting nut can rotate the connecting column 43 connected to it, so that the top plate can be moved up and down through the thread, thereby realizing the up and down adjustment.

[0035] More specifically, the top of the support column 41 is flush with the top plate 2, and the longer support column 41 maintains the stability of the entire top plate 2 and the connecting column 43, reducing swaying.

[0036] More specifically, the surface of the adjusting nut has anti-slip grooves to increase friction and facilitate adjustment.

[0037] like Figure 2 As shown, in a preferred embodiment of the present invention, the horizontal groove 11 is a T-shaped groove structure with a width of 15mm and a depth of 10mm, and is symmetrically distributed along the length of the base plate 1.

[0038] Furthermore, the boss is a T-shaped groove structure with a width of 15mm and a depth of 10mm, and is symmetrically distributed along the length of the base plate 1.

[0039] Specifically, the T-slot restricts the movement direction of the slider 31 (horizontal direction only) through the "boss + groove" structure, preventing the slider from shifting laterally or falling off during the pressurization process. The symmetrical distribution ensures that the base plate is evenly stressed, avoiding deformation caused by excessive stress on one side of the slide.

[0040] Furthermore, the surface of the slider 31 is provided with a fiber limiting groove 311, the groove depth is 5mm, and the two sides of the groove opening are provided with a 45° chamfer.

[0041] Specifically, the limiting groove 311 restricts the lateral movement of the fiber through physical constraints, ensuring that the fiber maintains the preset distribution during the curing process. The 45° chamfer prevents the fiber from being scratched by the edge of the groove during laying or pressurization, reducing fiber breakage.

[0042] Furthermore, the adjustment handles are symmetrically arranged at both ends of the side wall of the slider 31. Horizontal adjustment is achieved by moving the slider 31 by pulling the adjustment handles.

[0043] Furthermore, the temperature sensor measures temperature and has a set temperature threshold of 120-140℃.

[0044] Furthermore, when the temperature sensor detects a temperature below 120-140℃, it sends a heating command to the temperature controller, which then sends a command to the heating element, causing the heating element to operate and raise the temperature. When the temperature exceeds 140℃, the heating element is turned off, and the temperature continues to be monitored over time by the temperature sensor.

[0045] Furthermore, the number of the horizontal adjustment components 3 is 1-2 sets, which are evenly distributed along the width direction of the base plate 1.

[0046] Furthermore, the number of vertical adjustment components 4 is 4-8 sets, which are evenly distributed around the top plate 2.

[0047] Specifically, multiple sets of sliders 31 cover different areas (such as left, middle, and right) in the width direction of the base plate, realizing multi-region gradient control of fiber distribution (such as carbon fiber area → mixed area → glass fiber area), and uniform distribution to ensure balanced slider adjustment force in each area (driving force of a single set of sliders ≤100N), avoiding base plate deformation caused by local stress concentration.

[0048] Specifically, multiple sets of support columns 41 are distributed along the circumference of the top plate, and the top plate is raised or lowered synchronously by adjusting nuts 42 to ensure that the top plate is subjected to uniform force.

[0049] Furthermore, the temperature sensor is a thermocouple or a resistance temperature detector (RTD).

[0050] Furthermore, a pressure sensor is installed at the bottom of the fiber limiting groove 311 of the slider 31 to monitor the fiber layer pressure in real time.

[0051] Specifically, the pressure sensor (accuracy ±0.1MPa) directly measures the contact pressure between the fiber layer and the limiting groove, avoiding uneven pressure on the fiber layer caused by loose slider or resin flow.

[0052] Based on the preferred embodiments of this utility model described above, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A mold for manufacturing functionally graded hybrid reinforced composite materials, characterized in that, include: The bottom plate (1) has two horizontal grooves (11) symmetrically opened on the top surface along the length direction, and a waste collection trough (115) is provided at the bottom of the horizontal grooves (11). The top plate (2) has a vertical guide hole (21) on its bottom surface; At least one set of horizontal adjustment components (3) includes a slider (31) and an adjustment handle (32). The bottom end of the slider (31) is connected to a boss that slides in cooperation with the horizontal slide groove (11). The surface of the slider (31) is provided with a fiber limiting groove (311). At least one set of vertical adjustment components (4) includes a support column (41) fixedly installed on the top of the base plate (1), a connecting column (43) sleeved on the outer wall of the support column (41), the connecting column (43) being threadedly connected to the vertical guide hole (21) of the top plate (2), an adjusting nut (42) being installed on the bottom outer wall of the connecting column (43), and a fixing nut being provided on the top of the connecting column (43); the adjusting nut (42) is used to drive the connecting column (43) to rotate within the vertical guide hole (21); The heating assembly (5) includes at least one heating element embedded in the surface of the slider (31), a temperature sensor disposed on the lower surface of the top plate (2), and a temperature controller connected to the temperature sensor and the heating element.

2. The mold for manufacturing functionally graded hybrid reinforced composite materials according to claim 1, characterized in that: The boss is a T-shaped groove structure with a width of 15mm and a depth of 10mm, and is symmetrically distributed along the length of the base plate (1).

3. A mold for manufacturing functionally graded hybrid reinforced composite materials according to claim 1, characterized in that: The surface of the slider (31) is provided with a fiber limiting groove (311), the groove depth is 5mm, and the two sides of the groove opening are provided with a 45° chamfer.

4. A mold for manufacturing functionally graded hybrid reinforced composite materials according to claim 1, characterized in that: The adjustment handles are symmetrically arranged at both ends of the side wall of the slider (31).

5. A mold for manufacturing functionally graded hybrid reinforced composite materials according to claim 1, characterized in that: The temperature sensor measures temperature and has a set temperature threshold of 120-140℃.

6. A mold for manufacturing functionally graded hybrid reinforced composite materials according to claim 5, characterized in that: When the temperature sensor detects a temperature below 120-140℃, it sends a heating command to the temperature controller, which then sends a command to the heating element, causing the heating element to operate and raise the temperature. When the temperature exceeds 140℃, the heating element is turned off, and the temperature continues to be monitored over time using the temperature sensor.

7. A mold for manufacturing functionally graded hybrid reinforced composite materials according to claim 1, characterized in that: The number of the horizontal adjustment components (3) is 1-2 sets, which are evenly distributed along the width direction of the base plate (1).

8. A mold for manufacturing functionally graded hybrid reinforced composite materials according to claim 1, characterized in that: The number of vertical adjustment components (4) is 4-8 sets, which are evenly distributed along the circumference of the top plate (2).

9. A mold for manufacturing functionally graded hybrid reinforced composite materials according to claim 1, characterized in that: The temperature sensor is a thermocouple or a resistance temperature detector (RTD).

10. A mold for manufacturing functionally graded hybrid reinforced composite materials according to claim 1, characterized in that: A pressure sensor is installed at the bottom of the fiber limiting groove (311) of the slider (31) to monitor the fiber layer pressure in real time.

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