High-ductility prepreg preparation device
By using staggered rotating blades to make multi-point cuts on the surface fiber bundles of the prepreg, the problem of low efficiency in traditional prepreg cutting equipment is solved, and the high ductility and impact resistance of the composite material are improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SICHUAN TUOXIN ADVANCED MATERIALS TECHNOLOGY CO LTD
- Filing Date
- 2025-06-19
- Publication Date
- 2026-05-15
AI Technical Summary
Existing technologies make it difficult to achieve multi-point, dense, and depth-controlled fiber cutting in prepregs, resulting in insufficient ductility of composite materials. Furthermore, traditional cutting equipment is complex and inefficient, making it difficult to meet the application requirements under complex deformation and impact loads.
By employing staggered rotating blades, the surface fiber bundles of the prepreg are precisely cut during translational motion, forming dense micro-cuts. Through the synergistic effect of rotational cutting and translational motion, the deformation constraints of the fiber network on the resin matrix are effectively released.
It significantly improves the ductility and impact resistance of the cured composite material, while avoiding large-area damage to the matrix structure. It has high process efficiency and strong stability, breaking through the ductility bottleneck of traditional prepregs.
Smart Images
Figure CN224239722U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of composite material preparation technology, and more specifically, to a device for preparing high-ductility prepreg. Background Technology
[0002] Traditional prepregs are composed of continuous fiber reinforcement and resin matrix. Although the cured composite material has high strength, it often suffers from insufficient ductility due to the rigid constraint of the fiber network, making it difficult to meet the application requirements under complex deformation or impact loads. Existing technologies attempt to modify the fiber / resin interface through physical or chemical methods, or to partially cut the fibers to improve toughness. However, these processes are often complex, inefficient, and difficult to precisely control the depth, density, and uniformity of fiber cutting, which can easily damage the matrix or affect the overall strength. The effects are limited and the stability is poor.
[0003] Existing cutting equipment mostly uses fixed blades or simple reciprocating cutting, which makes it difficult to achieve multi-point, dense and depth-controllable fiber cutting. In particular, it cannot quickly form a large number of uniformly distributed micro-cuts on the prepreg web to effectively release the fiber's constraint on resin deformation, while avoiding significant damage to the overall material integrity. This restricts the large-scale preparation of high-ductility prepregs. Therefore, in order to address the above technical problems, a high-ductility prepreg preparation device is proposed here. Utility Model Content
[0004] The purpose of this invention is to provide a high-ductility prepreg preparation device, which uses staggered rotating blades to precisely cut the surface fiber bundles of the prepreg during translational motion, thereby reducing the constraint of the fiber network on the resin by creating micro-cuts and directly improving the ductility of the cured composite material.
[0005] This utility model is achieved through the following technical solution:
[0006] A high-ductility prepreg preparation apparatus includes an operating table. Two sets of symmetrically arranged mounting plates are fixedly connected to the upper side of the operating table. A positioning mechanism is installed on the outside of the mounting plates. Mounting strips are fixedly connected to both sides of the operating table. Mounting grooves are formed on the inner sides of both sets of mounting strips. Sliding grooves are formed on the outside of the mounting grooves. A slider is slidably connected to the inner side of the mounting grooves. A translation mechanism is installed inside the operating table. A mounting frame is fixedly connected between the two sets of sliders. A multi-point cutting component is installed on the outside of the mounting frame.
[0007] Preferably, the positioning mechanism includes a screw, a positioning plate, and a fastening nut. The screw is threaded to the upper side of the mounting plate, the positioning plate is fixedly connected to the lower side of the screw, the fastening nut is threaded to the outside of the screw, and the positioning plate abuts against the upper surface of the mounting plate.
[0008] Preferably, a fixing rod is fixedly connected inside the mounting strip, and the slider is slidably connected to the outside of the fixing rod. The translation mechanism includes a square groove, a square block, a lead screw, a connecting groove, and a connecting rod. The square groove is opened inside the operating table, the square block is slidably connected to the inside of the square groove, the lead screw is rotatably connected to the inside of the square groove, and the square block and the lead screw are threaded together. The connecting groove is opened between the square groove and the mounting groove, and the connecting rod is fixedly connected between the slider and the square block, and the connecting rod is slidably connected to the inside of the connecting groove.
[0009] Preferably, a second motor is fixedly connected to the outside of the operating table, and the lead screw is fixedly connected to the second motor.
[0010] Preferably, the mounting bracket and the slide are slidably connected.
[0011] Preferably, the multi-point cutting assembly includes a first motor, a rotating shaft, a roller, and a cutting blade. The first motor is fixedly connected to the outside of the mounting frame, and the rotating shaft is rotatably connected to the inside of the mounting frame. The rotating shaft and the first motor are fixedly connected.
[0012] Preferably, the roller is fixedly connected to the outside of the rotating shaft, and the roller is matched with the two sets of mounting plates. The cutting blade is fixedly connected to the outside of the roller, and the number of cutting blades is several sets, which are staggered on the outer surface of the roller.
[0013] The technical solution of this utility model has at least the following beneficial effects:
[0014] This invention proposes a high-ductility prepreg preparation device that uses staggered rotating blades to perform high-speed, multi-point cutting on the surface of the prepreg during translation. This precisely severs the surface fiber bundles, forming dense micro-cuts, which effectively releases the deformation constraints of the fiber network on the resin matrix, significantly improving the ductility and impact resistance of the cured composite material. At the same time, it avoids large-area damage to the matrix structure. The synergistic effect of rotational cutting and translational motion ensures uniform and controllable fiber cutting depth and density. The process is highly efficient and stable, breaking through the traditional prepreg ductility bottleneck while maintaining the basic strength of the material, and providing a high-performance material solution for complex working conditions. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0016] Figure 2 for Figure 1 Enlarged view of A in the middle;
[0017] Figure 3 This is a schematic diagram of the second overall structure of the present invention;
[0018] Figure 4 for Figure 3 Enlarged view of B in the middle;
[0019] Figure 5 This is a partial side sectional view of the present invention;
[0020] Figure 6 for Figure 5 Enlarged view of C in the middle;
[0021] Figure 7 for Figure 5 Enlarged view of D;
[0022] Reference numerals: 1. Operating table; 2. Mounting plate; 3. Screw; 4. Positioning plate; 5. Fastening nut; 6. Mounting strip; 7. Mounting groove; 8. Slide groove; 9. Slider; 10. Fixing rod; 11. Square groove; 12. Mounting bracket; 13. Connecting rod; 14. First motor; 15. Rotating shaft; 16. Roller; 17. Cutting blade; 18. Square block; 19. Second motor; 20. Lead screw; 21. Connecting groove. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0024] Please see Figures 1-7 This utility model proposes a high-ductility prepreg preparation device, including an operating table 1 as the basic support platform of the entire device. Two sets of symmetrically arranged mounting plates 2 are fixedly connected to the upper side of the operating table 1 for fixing the prepreg substrate. A positioning mechanism is installed on the outside of the mounting plates 2 for clamping and positioning the prepreg. Mounting strips 6 are fixedly connected to both sides of the operating table 1 as guide support structures. Mounting grooves 7 are opened on the inner side of both sets of mounting strips 6 as motion tracks. Sliding grooves 8 are opened on the outside of the mounting grooves 7 to provide sliding space. A slider 9 is slidably connected to the inside of the mounting grooves 7 as a motion execution component. A translation mechanism is installed inside the operating table 1 to drive the cutting component to move. A mounting frame 12 is fixedly connected between the two sets of sliders 9 as the mounting base of the cutting component. A multi-point cutting component is installed on the outside of the mounting frame 12 for cutting the prepreg.
[0025] The positioning mechanism includes a screw 3 as an adjustment component, a positioning plate 4 as a clamping component, and a fastening nut 5 as a locking component. The screw 3 is threaded to the upper side of the mounting plate 2 to achieve the height adjustment function. The positioning plate 4 is fixedly connected to the lower side of the screw 3 and directly contacts the surface of the prepreg. The fastening nut 5 is threaded to the outside of the screw 3 to fix the adjustment position, and the positioning plate 4 abuts against the upper surface of the mounting plate 2 to ensure that the clamping force is evenly distributed.
[0026] The mounting strip 6 has a fixed rod 10 inside as an auxiliary guide component, and the slider 9 is slidably connected to the outside of the fixed rod 10 to ensure motion stability. The translation mechanism includes a square groove 11 as a drive cavity, a square block 18 as a transmission component, a lead screw 20 as a power conversion component, a connecting groove 21 as a transmission channel, and a connecting rod 13 as a connecting component. The square groove 11 is opened inside the operating table 1 to provide installation space. The square block 18 is slidably connected to the inside of the square groove 11 to achieve linear motion. The lead screw 20 is rotatably connected to the inside of the square groove 11 to convert rotational motion into linear motion. The square block 18 and the lead screw 20 are connected by a thread to achieve motion transmission. The connecting groove 21 is opened between the square groove 11 and the mounting groove 7 to form a motion channel. The connecting rod 13 is fixedly connected between the slider 9 and the square block 18 to transmit driving force, and the connecting rod 13 is slidably connected to the inside of the connecting groove 21 to ensure smooth movement.
[0027] The control panel 1 is externally fixedly connected to a second motor 19 as a translational power source, and the lead screw 20 is fixedly connected to the second motor 19 to achieve power transmission.
[0028] The mounting bracket 12 and the slide 8 are connected by a sliding connection to ensure smooth movement of the cutting component.
[0029] The multi-point cutting assembly includes a first motor 14 as the cutting power source, a rotating shaft 15 as the transmission component, a roller 16 as the blade mounting base, and a cutting blade 17 as the execution component. The first motor 14 is fixedly connected to the outside of the mounting frame 12 to provide rotational power, and the rotating shaft 15 is rotatably connected to the inside of the mounting frame 12 to transmit rotational motion. The rotating shaft 15 and the first motor 14 are fixedly connected to ensure power transmission efficiency.
[0030] Roller 16 is fixedly connected to the outside of rotating shaft 15 as a blade mounting platform, and roller 16 is matched with two sets of mounting plates 2 to ensure that the working range covers the entire prepreg width. Cutting blade 17 is fixedly connected to the outside of roller 16 and acts directly on the surface of prepreg. The number of cutting blades 17 is several sets and they are staggered on the outer surface of roller 16 to achieve a multi-point uniform cutting effect.
[0031] The working principle of a high-ductility prepreg preparation device based on an embodiment is as follows: The prepreg substrate is first placed between two sets of symmetrical mounting plates 2 on the operating table 1. The operator can clamp and initially position the substrate using screws 3, positioning plates 4, and fastening nuts 5 to ensure its stability during processing. Then, the translation mechanism is activated, and the second motor 19 drives the lead screw 20 to rotate, which enables the square block 18 to slide the two sets of connecting rods 13 in the connecting groove 21, thereby driving the two sets of sliders 9 to move synchronously. The multi-point cutting assembly installed on the mounting frame 12 moves accordingly. When the cutting assembly moves above the prepreg, the first... Motor 14 drives rotating shaft 15 and roller 16 fixed on it to rotate at high speed. Several cutting blades 17 installed on the outer surface of roller 16 in a staggered manner rotate accordingly. With the rotation of roller 16 and the translational movement of mounting frame 12, these high-speed rotating cutting blades 17 precisely cut across the surface of prepreg in a multi-point, staggered contact manner. Its core function is to selectively cut the fiber bundles on the surface of prepreg or at a specific depth, forming a large number of tiny cuts or breaks. This multi-point fiber cutting significantly reduces the constraint force of the fiber network on the deformation of the resin matrix, thereby effectively improving the ductility and deformability of the composite material after final curing.
[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A high-ductility prepreg preparation apparatus, characterized in that: The system includes an operating table (1), on the upper side of which two sets of symmetrically arranged mounting plates (2) are fixedly connected. A positioning mechanism is installed on the outside of the mounting plates (2). Mounting strips (6) are fixedly connected to both sides of the operating table (1). Mounting grooves (7) are opened on the inner side of both sets of mounting strips (6). Sliding grooves (8) are opened on the outside of the mounting grooves (7). A slider (9) is slidably connected to the inner side of the mounting grooves (7). A translation mechanism is installed inside the operating table (1). A mounting frame (12) is fixedly connected between the two sets of sliders (9). A multi-point cutting component is installed on the outside of the mounting frame (12).
2. The apparatus for preparing a high-ductility prepreg according to claim 1, characterized in that: The positioning mechanism includes a screw (3), a positioning plate (4), and a fastening nut (5). The screw (3) is threaded to the upper side of the mounting plate (2), the positioning plate (4) is fixedly connected to the lower side of the screw (3), the fastening nut (5) is threaded to the outside of the screw (3), and the positioning plate (4) abuts against the upper surface of the mounting plate (2).
3. The apparatus for preparing a high-ductility prepreg according to claim 1, characterized in that: The mounting strip (6) is fixedly connected to a fixing rod (10) inside, and the slider (9) is slidably connected to the outside of the fixing rod (10). The translation mechanism includes a square groove (11), a square block (18), a lead screw (20), a connecting groove (21), and a connecting rod (13). The square groove (11) is opened inside the operating table (1). The square block (18) is slidably connected to the inside of the square groove (11). The lead screw (20) is rotatably connected to the inside of the square groove (11), and the square block (18) and the lead screw (20) are threadedly connected. The connecting groove (21) is opened between the square groove (11) and the mounting groove (7). The connecting rod (13) is fixedly connected between the slider (9) and the square block (18), and the connecting rod (13) is slidably connected to the inside of the connecting groove (21).
4. The apparatus for preparing a high-ductility prepreg according to claim 3, characterized in that: The operating table (1) is externally fixedly connected to a second motor (19), and the lead screw (20) is fixedly connected to the second motor (19).
5. The apparatus for preparing a high-ductility prepreg according to claim 1, characterized in that: The mounting bracket (12) and the slide (8) are slidably connected.
6. The apparatus for preparing a high-ductility prepreg according to claim 1, characterized in that: The multi-point cutting assembly includes a first motor (14), a rotating shaft (15), a roller (16), and a cutting blade (17). The first motor (14) is fixedly connected to the outside of the mounting frame (12), and the rotating shaft (15) is rotatably connected to the inside of the mounting frame (12). The rotating shaft (15) and the first motor (14) are fixedly connected.
7. The apparatus for preparing a high-ductility prepreg according to claim 6, characterized in that: The roller (16) is fixedly connected to the outside of the rotating shaft (15), and the roller (16) is matched with the two sets of mounting plates (2). The cutting blade (17) is fixedly connected to the outside of the roller (16), and the number of cutting blades (17) is several sets and they are staggered on the outer surface of the roller (16).