Carbon fiber needle punching forming device with needle guiding structure

Abstract

The utility model relates to carbon fiber product production technical field, and disclose a kind of carbon fiber needle punching forming device with needle punching guide structure.The utility model is designed when needle head will contact carbon fiber preform surface, under the vertical force exerted by needle head, bottom plate and limit plate move, always keep close adhesion with preform surface, bottom plate realizes follow-up buffering by second spring, and limit plate is then buffered by first spring and adjusted, effectively avoid rigid impact between needle punching device and preform by double buffering mechanism, simultaneously, limit plate significantly shortens the length of needle cantilever section, so that the lateral force and swing amplitude generated in needle punching process are effectively inhibited, so not only the stability of needle punching process is greatly improved, but also excellent anti-breaking needle effect is realized, which provides reliable guarantee for high-quality preparation of carbon fiber preform.

Description

Technical Field

[0001] This utility model relates to the field of carbon fiber product manufacturing technology, specifically to a carbon fiber needle punching forming device with a needle punching guide structure. Background Technology

[0002] Carbon fiber preforms, as key reinforcements for high-performance composite materials, are widely used in aerospace, defense, rail transportation and other fields. Needle punching is an important carbon fiber preform forming technology. Through repeated puncture by needles, the fiber layers are entangled with each other, thereby forming a preform with certain strength and structure.

[0003] However, in traditional needle punching devices, the needle impacts the surface of the carbon fiber preform at a high frequency and speed during the needle punching process, which easily generates significant rigid collisions, causing vibration and positional displacement of the needle head. This not only affects the puncture accuracy and the quality of the preform, but also easily leads to needle breakage. Especially at the moment the needle contacts the preform, due to the lack of an effective buffer and guiding mechanism, the excessively long cantilever section of the needle is prone to lateral force and swaying, further exacerbating the risk of needle breakage and equipment instability. Although some equipment has tried to adopt a simple buffer structure, it is still difficult to achieve dynamic follow-up and force control during the contact stage between the needle and the preform, which limits the further application of needle punching technology in the preparation of high-quality carbon fiber preforms.

[0004] To address this, a carbon fiber needle punching forming device with a needle punching guide structure is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a carbon fiber needle punching molding device with a needle punching guide structure, which solves the technical problem that traditional devices are prone to significant rigid collisions, causing vibration and positional displacement of the needle punching head, and effectively avoids rigid impact between the needle punching device and the preform.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a carbon fiber needle punching forming device with a needle punching guide structure, comprising a platform, a mounting frame, and a guide assembly. The mounting frame is disposed in the middle of the platform, and the guide assembly is disposed on the mounting frame. The guide assembly includes an electrically operated extension mechanism.

[0007] The telescopic rod is fixedly connected to the middle of the upper surface of the mounting frame. The output end of the telescopic rod is fixedly connected to a first mounting plate. Multiple needle heads are fixedly connected to the lower surface of the first mounting plate. A first spring is fixedly connected to each of the four corners of the lower surface of the first mounting plate. A limit plate is fixedly connected to the lower surface of the first spring. The upper ends of the needle heads are all inside the limit plate.

[0008] Preferably, a second mounting plate is fixedly connected to the middle of the lower end of the inner wall of the mounting bracket, and telescopic sleeves are fixedly connected to the four corners of the upper surface of the second mounting plate. A base plate is fixedly connected to the upper surface of the telescopic sleeves, and the stability of the base plate can be improved by the telescopic sleeves.

[0009] Preferably, a plurality of second springs are fixedly connected to the upper surface of the second mounting plate, and the upper surfaces of the second springs are all fixedly connected to the base plate. The second springs can buffer the pressure on the base plate.

[0010] Preferably, limit rods are fixedly connected to the four corners of the upper surface of the first mounting plate, and the limit rods slide at the four corners of the mounting frame. Guide blocks are provided at the front and rear ends of the mounting frame, and the guide blocks are fixedly connected to the platform. The limit rods can improve the stability of the first mounting plate, and the guide blocks can facilitate the introduction of the carbon fiber preform into the bottom plate.

[0011] Preferably, the front and rear ends of the inner wall of the platform are rotatably connected to rotating rollers, and a conveyor belt is sleeved on the outside of the rotating rollers. A first servo motor is fixedly connected to the front end of the outer wall of one side of the platform. The output end of the first servo motor is fixedly connected to the front rotating roller. The carbon fiber preform can be moved by the conveyor belt, and the front rotating roller can be rotated by the first servo motor, which in turn starts the conveyor belt in conjunction with the rear rotating roller.

[0012] Preferably, connecting plates are fixedly connected to both sides of the front end and both sides of the rear end of the upper surface of the platform. A discharge roller is rotatably connected between the front connecting plates, and a collecting roller is rotatably connected between the rear connecting plates. A second servo motor is fixedly connected to both the front end and the rear end of one side of the outer wall of one connecting plate. The second servo motor is fixedly connected to the discharge roller and the collecting roller respectively. The carbon fiber preform can be placed through the discharge roller, and the needled carbon fiber preform can be collected through the collecting roller. The second servo motor can drive the discharge roller and the collecting roller to rotate.

[0013] Preferably, each of the four corners of the lower surface of the platform is fixedly connected to a support leg, and each support leg is fixedly connected to a support base. The support legs can support the platform, and the support bases can improve the stability of the support legs.

[0014] Preferably, a control panel is fixedly connected to the middle of one side of the outer wall of the mounting bracket. The electric telescopic rod, the first servo motor and the second servo motor are all electrically connected to the control panel. The control panel facilitates operation by the staff, and the electrical connection facilitates signal transmission and reception.

[0015] This invention provides a carbon fiber needle punching forming device with a needle punching guide structure. It has the following beneficial effects:

[0016] (1) By designing a limiting plate, when the needle head is about to contact the surface of the carbon fiber preform, the bottom plate and the limiting plate move under the vertical force applied by the needle head, and always keep in close contact with the surface of the preform. The bottom plate achieves follow-up buffering through the second spring, while the limiting plate is buffered and adjusted through the first spring. The double buffering mechanism effectively avoids rigid impact between the needle device and the preform. At the same time, the limiting plate significantly shortens the length of the needle cantilever section, so that the lateral force and swing amplitude generated during the needle punching process are effectively suppressed. This not only greatly improves the stability of the needle punching process, but also achieves excellent needle breakage prevention effect, providing a reliable guarantee for the high-quality preparation of carbon fiber preforms.

[0017] (2) The present invention can effectively constrain the movement trajectory of the first mounting plate in the vertical direction by means of the limiting rod, which significantly improves the mechanical stability during its lifting process. This not only ensures that the mounting plate will not deviate or shake when it moves up and down, but more importantly, it provides a solid support foundation for the needle punching operation, thereby greatly improving the positional accuracy and operational stability during the needle punching operation, making the entire needle punching process more accurate and reliable, reducing the needle punching deviation caused by mechanical vibration or external force interference, and finally achieving a higher quality needle punching processing effect. Attached Figure Description

[0018] Figure 1 is a perspective view of the overall structure of this utility model;

[0019] Figure 2 is a schematic diagram of the structure of this utility model from another perspective;

[0020] Figure 3 is a schematic diagram of the front section structure of this utility model;

[0021] Figure 4 is an enlarged view of point A in Figure 3.

[0022] In the diagram: 1. Platform; 2. Mounting frame; 3. Guide assembly; 31. Electric telescopic rod; 32. First mounting plate; 33. Needle head; 34. First spring; 35. Limiting plate; 36. Second mounting plate; 37. Telescopic sleeve; 38. Base plate; 39. Second spring; 4. Limiting rod; 5. Guide block; 6. Rotating roller;

[0023] 7. Conveyor belt; 8. First servo motor; 9. Connecting plate; 10. Discharge roller; 11. Collecting roller; 12. Second servo motor; 13. Support leg; 14. Support base; 15. Control panel. Detailed Implementation

[0024] 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.

[0025] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0026] Example 1:

[0027] A preferred embodiment of the carbon fiber needle punching forming device with a needle punching guide structure provided by this utility model is shown in Figures 1-4: The carbon fiber needle punching forming device with a needle punching guide structure includes a platform 1, a mounting frame 2, and a guide assembly 3. The mounting frame 2 is disposed in the middle of the platform 1, and the guide assembly 3 is disposed on the mounting frame 2. The guide assembly 3 includes an electric telescopic rod 31, which is fixedly connected to the middle of the upper surface of the mounting frame 2. The output end of the electric telescopic rod 31 is fixedly connected to a first mounting plate 32. A plurality of needle punches 33 are fixedly connected to the lower surface of the first mounting plate 32. A first spring 34 is fixedly connected to each of the four corners of the lower surface of the first mounting plate 32, and a needle punch 33 is fixedly connected to the lower surface of the first spring 34.

[0028] The upper ends of the limiting plate 35 and the needle head 33 are both inside the limiting plate 35;

[0029] The lower part of the inner wall of the mounting bracket 2 is fixedly connected to a second mounting plate 36. The four corners of the upper surface of the second mounting plate 36 are fixedly connected to telescopic sleeves 37. The upper surface of the telescopic sleeves 37 is fixedly connected to a base plate 38.

[0030] Multiple second springs 39 are fixedly connected to the upper surface of the second mounting plate 36, and the upper surfaces of the second springs 39 are all fixedly connected to the base plate 38.

[0031] Furthermore, in this embodiment, the designed limiting plate 35 allows the base plate 38 and the limiting plate 35 to move under the vertical force applied by the needle head 33 when the needle head 33 is about to contact the surface of the carbon fiber preform. They remain in close contact with the preform surface. The base plate 38 is buffered by the second spring 39, while the limiting plate 35 is adjusted by the first spring 34. This dual buffering mechanism effectively avoids rigid impact between the needle-punching device and the preform. Simultaneously, the limiting plate 35 significantly shortens the length of the needle cantilever section, effectively suppressing the lateral force and sway amplitude generated during needle-punching. This not only greatly improves the stability of the needle-punching process but also achieves excellent needle breakage prevention, providing a reliable guarantee for the high-quality preparation of the carbon fiber preform.

[0032] Example 2:

[0033] Based on Embodiment 1, a preferred embodiment of the carbon fiber needle punching forming device with a needle punching guide structure provided by this utility model is shown in Figures 1-4: the four corners of the upper surface of the first mounting plate 32 are all fixedly connected with limit rods 4, the limit rods 4 slide at the four corners of the mounting frame 2, and the front end and rear end of the mounting frame 2 are provided with guide blocks 5, which are fixedly connected to the platform 1.

[0034] Rotating rollers 6 are rotatably connected to the front and rear ends of the inner wall of the platform 1. A conveyor belt 7 is sleeved on the outside of the rotating rollers 6. A first servo motor 8 is fixedly connected to the front end of one side of the outer wall of the platform 1. The output end of the first servo motor 8 is fixedly connected to the front rotating roller 6.

[0035] Connecting plates 9 are fixedly connected to both sides of the front end and both sides of the rear end of the upper surface of the platform 1. A discharge roller 10 is rotatably connected between the front connecting plates 9, and a collecting roller 11 is rotatably connected between the rear connecting plates 9. A second servo motor 12 is fixedly connected to both the front end and the rear end of one side of the outer wall of one connecting plate 9.

[0036] Machine 12 is fixedly connected to discharge roller 10 and collection roller 11 respectively;

[0037] Support legs 13 are fixedly connected to the four corners of the lower surface of the platform 1, and support seats 14 are fixedly connected to the lower surface of the support legs 13.

[0038] A control panel 15 is fixedly connected to the middle of one side of the outer wall of the mounting bracket 2. The electric telescopic rod 31, the first servo motor 8 and the second servo motor 12 are all electrically connected to the control panel 15.

[0039] Furthermore, in this embodiment, the limiting rod 4 can effectively constrain the vertical movement trajectory of the first mounting plate 32, significantly improving its mechanical stability during the lifting process. This not only ensures that the mounting plate will not deviate or shake when moving up and down, but more importantly, it provides a solid support foundation for the needle-punching operation. This greatly improves the positional accuracy and operational stability during needle-punching, making the entire needle-punching process more precise and reliable, reducing needle-punching deviations caused by mechanical vibration or external interference, and ultimately achieving a higher quality needle-punching processing effect.

[0040] In use, the carbon fiber preform is placed outside the discharge roller 10, with one end of the preform placed on the conveyor belt 7. The first servo motor 8 drives the front rotating roller 6 to rotate, coordinating with the rear rotating roller 6 to start the conveyor belt 7. The conveyor belt 7 moves the carbon fiber preform sequentially. When the carbon fiber preform reaches the mounting frame 2, the electric telescopic rod 31 drives the first mounting plate 32 to descend, causing the needle head 33 to descend. When the needle head 33 is about to contact the surface of the carbon fiber preform, under the vertical force applied by the needle head 33, the base plate 38 and the limiting plate 35... The device moves while maintaining close contact with the surface of the preform. The base plate 38 is cushioned by the second spring 39, while the limiting plate 35 is adjusted by the first spring 34. This dual cushioning mechanism effectively avoids rigid impact between the needle-punching device and the preform. At the same time, the limiting plate 35 significantly shortens the length of the needle cantilever section, effectively suppressing the lateral force and swing amplitude generated during the needle-punching process. This not only greatly improves the stability of the needle-punching process but also achieves excellent needle breakage prevention, providing a reliable guarantee for the high-quality preparation of carbon fiber preforms.

[0041] During the needle-punching process, the limiting rod 4 effectively constrains the vertical movement trajectory of the first mounting plate 32, significantly improving its mechanical stability during lifting and lowering, and ensuring the mounting plate remains in place.

[0042] It does not shift or shake when moving downwards, and more importantly, it provides a solid support foundation for the needle punching operation, thereby greatly improving the positional accuracy and operational stability during needle punching, making the entire needle punching process more precise and reliable, reducing needle punching deviations caused by mechanical vibration or external force interference, and ultimately achieving a higher quality needle punching processing effect.

[0043] The needle-punched carbon fiber preform is wound around the collecting roller 11, and the collecting roller 11 is rotated and wound by a servo motor.

[0044] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A carbon fiber needle punching forming device with needle guide structure, comprising a table body (1), a mounting frame (2) and a guide assembly (3), characterized in that: The mounting frame (2) is located in the middle of the platform (1), and the guide assembly (3) is located on the mounting frame (2). The guide assembly (3) includes an electric telescopic rod (31). The electric telescopic rod (31) is fixedly connected to the middle of the upper surface of the mounting frame (2). The output end of the electric telescopic rod (31) is fixedly connected to a first mounting plate (32). A plurality of needle heads (33) are fixedly connected to the lower surface of the first mounting plate (32). A first spring (34) is fixedly connected to each of the four corners of the lower surface of the first mounting plate (32). A limit plate (35) is fixedly connected to the lower surface of the first spring (34). The upper ends of the needle heads (33) are all inside the limit plate (35).

2. The carbon fiber needle punching forming device with needle guiding structure according to claim 1, characterized in that: The second mounting plate (36) is fixedly connected to the middle of the lower end of the inner wall of the mounting bracket (2). The four corners of the upper surface of the second mounting plate (36) are fixedly connected to telescopic sleeves (37). The upper surface of the telescopic sleeves (37) is fixedly connected to a base plate (38).

3. The carbon fiber needle punching forming device with a needle punching guide structure according to claim 2, characterized in that: The upper surface of the second mounting plate (36) is fixedly connected with a plurality of second springs (39), and the upper surface of each of the second springs (39) is fixedly connected to the base plate (38).

4. The carbon fiber needle punching forming device with a needle punching guide structure according to claim 1, characterized in that: Limiting rods (4) are fixedly connected to the four corners of the upper surface of the first mounting plate (32). The limiting rods (4) slide at the four corners of the mounting frame (2). Guide blocks (5) are provided at the front and rear ends of the mounting frame (2). The guide blocks (5) are fixedly connected to the platform (1).

5. The carbon fiber needle punching forming device with a needle punching guide structure according to claim 1, characterized in that: Rotating rollers (6) are rotatably connected to the front and rear ends of the inner wall of the platform (1). A conveyor belt (7) is sleeved on the outside of the rotating rollers (6). A first servo motor (8) is fixedly connected to the front end of one side of the outer wall of the platform (1). The output end of the first servo motor (8) is connected to the front end of the rotating roller. The moving roller (6) is fixedly connected.

6. The carbon fiber needle punching forming apparatus with a needle punching guide structure according to claim 1, characterized in that: The platform (1) has connecting plates (9) fixedly connected to both sides of the front end and both sides of the rear end on the upper surface. A discharge roller (10) is rotatably connected between the front connecting plates (9) and a collection roller (11) is rotatably connected between the rear connecting plates (9). A second servo motor (12) is fixedly connected to both the front end and the rear end of the outer wall of one side of the connecting plate (9). The second servo motor (12) is fixedly connected to the discharge roller (10) and the collection roller (11) respectively.

7. The carbon fiber needle punching forming apparatus with a needle punching guide structure according to claim 1, characterized in that: The four corners of the lower surface of the platform (1) are all fixedly connected to support legs (13), and the lower surfaces of the support legs (13) are all fixedly connected to support seats (14).

8. The carbon fiber needle punching forming device with a needle punching guide structure according to claim 1, characterized in that: A control panel (15) is fixedly connected to the middle of one side of the outer wall of the mounting bracket (2). The electric telescopic rod (31), the first servo motor (8), and the second servo motor (12) are all electrically connected to the control panel (15).

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