Rotatable needling device for producing annular carbon fiber preform

Abstract

The utility model discloses a rotatable needling device for producing an annular carbon fiber preform, which relates to the technical field of production of annular carbon fiber preforms and comprises a support seat and a circular needle plate, wherein an encoder is fixedly mounted on the outer wall of the front side of the support seat; a carbon fiber annular prefabricated body is placed at the top of the circular needle plate, two elastic locking claw structures are symmetrically arranged at the top of the circular needle plate, and a rotatable needling mechanism is arranged above the supporting seat. The rotary needling mechanism is arranged, the needling body is driven by the servo electric cylinder to ascend and descend in a reciprocating mode so as to continuously pierce the surface of the carbon fiber annular prefabricated body, then the transmission gear is driven by the servo motor to rotate, and then the gear ring meshed with the transmission gear can drive the needling body ascending and descending in the reciprocating mode to continuously rotate. And the needles can be uniformly distributed on the whole carbon fiber annular preform, so that the fiber entanglement uniformity and the overall performance of the preform are improved.

Description

Technical Field

[0001] This utility model relates to the field of carbon fiber ring preform production technology, and in particular to a rotatable needle punching device for producing carbon fiber ring preforms. Background Technology

[0002] Carbon fiber preforms are pre-formed bodies with a certain shape, structure and properties, using carbon fiber as the reinforcing material and through specific processing techniques. The preforms are then further processed to manufacture end carbon fiber composite products.

[0003] During the production process, carbon fiber ring preforms require needle punching. Needle punching allows the carbon fibers to intertwine and entangle, forming a tighter structure, thereby improving the overall strength and stability of the preform.

[0004] However, traditional needle punching devices often perform needle punching in a fixed direction. Due to the unique structure of the annular preform, fixed needle punching cannot fully and uniformly entangle the fibers, affecting the overall performance of the preform. Therefore, we propose a rotatable needle punching device for the production of carbon fiber annular preforms to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a rotatable needle punching device for the production of carbon fiber ring preforms.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A rotatable needle punching device for producing carbon fiber annular preforms includes a support base with an encoder fixedly mounted on its front outer wall and a circular needle plate fixed to the top outer wall of the support base. The carbon fiber annular preform is placed on the top of the circular needle plate, and two elastic locking claw structures are symmetrically arranged on the top of the circular needle plate. A rotatable needle punching mechanism is provided above the support base.

[0008] The rotatable needle-piercing mechanism includes a gear ring connected to the outer wall of a circular needle plate via a bearing, a support plate welded to the side wall of a support base, a servo motor fixed to the bottom outer wall of the support plate via bolts, a transmission gear fixedly mounted on the output shaft of the servo motor, a column fixed to the top outer wall of the gear ring, a crossbar fixed to the top outer wall of the column, a servo electric cylinder connected to the crossbar via a horizontal position adjustment component, a threaded sleeve coaxially fixed to the telescopic end of the servo electric cylinder, and a needle body threadedly connected to the threaded sleeve.

[0009] As a preferred embodiment, the output shaft of the servo motor passes through the support plate, and the transmission gear meshes with the gear ring.

[0010] As a preferred embodiment, the horizontal position adjustment assembly includes a groove formed at the bottom of the crossbar, an adjusting screw rotatably installed in the groove, an adjusting block threaded to the middle of the adjusting screw, and a rotating cap fixedly connected to the outer wall of one end of the adjusting screw.

[0011] As a preferred embodiment, the outer wall of the adjusting block is slidably connected to the inner wall of the slide groove, and the servo electric cylinder is fixed to the bottom outer wall of the adjusting block by bolts.

[0012] As a preferred embodiment, the elastic locking claw structure includes a slide rail formed on the top of the circular needle plate, a guide rod fixed in the slide rail, a guide block sleeved on the guide rod, an arc-shaped claw fixed to the side wall of the guide block, and a locking spring sleeved on the guide rod.

[0013] As a preferred embodiment, the outer wall of the guide block is slidably connected to the inner wall of the slide, one end of the outer wall of the locking spring is fixed to one side of the outer wall of the guide block, and the other end of the outer wall of the locking spring is fixed to one side of the inner wall of the guide groove.

[0014] The beneficial effects of this utility model are as follows:

[0015] 1. It is equipped with a rotatable needle punching mechanism. The needle punching body is driven to reciprocate and move up and down through a servo electric cylinder to continuously punch the surface of the carbon fiber ring preform. Then, the transmission gear is driven to rotate through a servo motor. The toothed ring that meshes with the transmission gear will drive the reciprocating needle punching body to rotate continuously, so that the needle punches can be evenly distributed on the entire carbon fiber ring preform, thereby improving the fiber entanglement uniformity and overall performance of the preform.

[0016] 2. A horizontal position adjustment component is provided, which controls the movement of the adjustment block by adjusting the rotation of the screw. This facilitates flexible adjustment of the horizontal working position of the needle body installed on the servo electric cylinder, and better meets the processing requirements of different carbon fiber ring preforms.

[0017] 3. It is equipped with two elastic locking claw structures, which can center and clamp carbon fiber ring preforms of different specifications to prevent them from moving during subsequent needle punching and affecting the processing quality. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the entire utility model;

[0019] Figure 2 This is a three-dimensional enlarged structural schematic diagram of the horizontal position adjustment component in this utility model;

[0020] Figure 3 This is a front view structural diagram of a partial part of this utility model;

[0021] Figure 4This is a three-dimensional enlarged structural diagram of the two elastic locking claw structures in this utility model.

[0022] In the diagram: 1. Support base; 2. Circular needle plate; 3. Carbon fiber ring preform; 4. Gear ring; 5. Support plate; 6. Servo motor; 7. Transmission gear; 8. Column; 9. Crossbar; 10. Servo electric cylinder; 11. Threaded sleeve; 12. Needle body; 13. Adjusting screw; 14. Adjusting block; 15. Rotary cap; 16. Guide rod; 17. Guide block; 18. Arc claw; 19. Locking spring; 20. Encoder. 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 of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Example 1, referring to Figure 1-3 A rotatable needle punching device for producing carbon fiber ring preforms includes a support base 1 and a circular needle plate 2 fixed to the top outer wall of the support base 1. A carbon fiber ring preform 3 is placed on the top of the circular needle plate 2, and a rotatable needle punching mechanism is provided above the support base 1.

[0025] Specifically, the rotatable needle-punching mechanism includes a gear ring 4 connected to the outer wall of the circular needle plate 2 via a bearing, a support plate 5 welded to the side wall of the support base 1, a servo motor 6 fixed to the bottom outer wall of the support plate 5 via bolts, a transmission gear 7 fixedly mounted on the output shaft of the servo motor 6, a column 8 fixed to the top outer wall of the gear ring 4, a crossbar 9 fixed to the top outer wall of the column 8, a servo electric cylinder 10 connected to the crossbar 9 via a horizontal position adjustment component, a threaded sleeve 11 coaxially fixed to the telescopic end of the servo electric cylinder 10, and a needle-punching body 12 threadedly connected to the threaded sleeve 11.

[0026] Furthermore, the output shaft of the servo motor 6 passes through the support plate 5, the transmission gear 7 meshes with the gear ring 4, and the needle body 12 includes a needle rod and a needle body. Both the needle rod and the needle body are made of high-strength alloy steel to ensure rigidity during the needle piercing process and prevent bending and deformation. The needle rod is also provided with a threaded section that can be threadedly connected to the threaded sleeve 11, which facilitates the installation and disassembly of the entire needle body 12. The needle body has a conical structure, which facilitates better insertion into the carbon fiber annular preform 3.

[0027] Furthermore, the horizontal position adjustment assembly includes a groove at the bottom of the crossbar 9, an adjusting screw 13 rotatably installed in the groove, an adjusting block 14 threadedly connected to the middle of the adjusting screw 13, and a rotating cap 15 fixedly connected to the outer wall of one end of the adjusting screw 13. The outer wall of the adjusting block 14 is slidably connected to the inner wall of the groove. The servo electric cylinder 10 is fixed to the bottom outer wall of the adjusting block 14 by bolts. Then, the adjusting screw 13 is driven to rotate by the rotating cap 15. Subsequently, under the limit of the groove, the adjusting block 14 threadedly connected to the adjusting screw 13 will drive the servo electric cylinder 10 to move linearly. This facilitates flexible adjustment of the horizontal working position of the needle body 12, and better meets the processing requirements of different carbon fiber annular preforms 3.

[0028] In addition, an encoder 20 is fixedly installed on the front outer wall of the support base 1. The encoder 20 encodes and controls the servo motor 6 and the servo cylinder 10, and can set the rotation frequency of the gear ring 4 and the reciprocating lifting frequency and puncture depth of the needle body 12.

[0029] In this embodiment, the needle body 12 is driven to reciprocate up and down by the servo electric cylinder 10 to continuously pierce the surface of the carbon fiber ring preform 3. Then, the transmission gear 7 is driven to rotate by the servo motor 6. The toothed ring 4 that meshes with the transmission gear 7 will drive the reciprocating needle body 12 to rotate continuously, so that the needles can be evenly distributed on the entire carbon fiber ring preform 3, thereby improving the fiber entanglement uniformity and overall performance of the preform.

[0030] Example 2, refer to Figure 1 and Figure 4 This embodiment is an optimization based on embodiment 1. Specifically, the top of the circular needle plate 2 is symmetrically provided with two elastic locking claw structures, which can clamp and fix the carbon fiber annular preform 3.

[0031] More specifically, the elastic locking claw structure includes a slide rail on the top of the circular needle plate 2, a guide rod 16 fixed in the slide rail, a guide block 17 sleeved on the guide rod 16, an arc-shaped claw 18 fixed to the side wall of the guide block 17, and a locking spring 19 sleeved on the guide rod 16.

[0032] Furthermore, the outer wall of the guide block 17 is slidably connected to the inner wall of the slide, one end of the outer wall of the locking spring 19 is fixed to one side of the outer wall of the guide block 17, and the other end of the outer wall of the locking spring 19 is fixed to one side of the inner wall of the guide groove.

[0033] In this embodiment, by pulling the two arc-shaped claws 18, the two guide blocks 17 are moved away from each other. At this time, the two guide rods 16 are moved away from each other, which will stretch the two locking springs 19. Then, the carbon fiber annular preform 3 is placed on the top of the circular needle plate 2. Finally, the two arc-shaped claws 18 are released. Under the elastic force of the two locking springs 19, the two guide blocks 17 will drive the two arc-shaped claws 18 to move closer to the center, so as to center and clamp the carbon fiber annular preforms 3 of different specifications, and avoid them from moving during the subsequent needle punching process, which would affect the processing quality.

[0034] Working principle: First, the two elastic locking claw structures can center and clamp the carbon fiber ring preform 3 that needs to be needle-punched to ensure that it is not easy to move later;

[0035] Secondly, the adjusting screw 13 is driven to rotate by the rotating cap 15. Then, under the limit of the slide groove, the adjusting block 14, which is threadedly connected to the adjusting screw 13, will drive the servo electric cylinder 10 to move linearly. This makes it easier to flexibly adjust the horizontal working position of the needle body 12, so as to better meet the processing requirements of different carbon fiber ring preforms 3.

[0036] Finally, the needle body 12 is driven by the servo electric cylinder 10 to reciprocate and move up and down to continuously pierce the surface of the carbon fiber ring preform 3. Then, the transmission gear 7 is driven to rotate by the servo motor 6. The gear ring 4 that meshes with the transmission gear 7 will drive the reciprocating needle body 12 to rotate continuously, so that the needles can be evenly distributed on the entire carbon fiber ring preform 3, thereby improving the fiber entanglement uniformity and overall performance of the preform.

[0037] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A rotatable needle punching device for producing carbon fiber annular preforms, comprising a support base (1) with an encoder (20) fixedly mounted on its front outer wall and a circular needle plate (2) fixed to the top outer wall of the support base (1), wherein a carbon fiber annular preform (3) is placed on top of the circular needle plate (2), characterized in that, The top of the circular needle plate (2) is symmetrically provided with two elastic locking claw structures, and the support base (1) is provided with a rotatable needle piercing mechanism above it. The rotatable needle-punching mechanism includes a toothed ring (4) connected to the outer wall of a circular needle plate (2) via a bearing, a support plate (5) welded to the side wall of a support base (1), a servo motor (6) fixed to the bottom outer wall of the support plate (5) by bolts, a transmission gear (7) fixedly mounted on the output shaft of the servo motor (6), a column (8) fixed to the top outer wall of the toothed ring (4), a crossbar (9) fixed to the top outer wall of the column (8), a servo electric cylinder (10) connected to the crossbar (9) via a horizontal position adjustment component, a threaded sleeve (11) coaxially fixed to the telescopic end of the servo electric cylinder (10), and a needle-punching body (12) threadedly connected to the threaded sleeve (11).

2. A rotatable needling device for the production of carbon fiber toroidal preforms according to claim 1, characterized in that, The output shaft of the servo motor (6) passes through the support plate (5), and the transmission gear (7) meshes with the gear ring (4).

3. A rotatable needling device for the production of carbon fiber toroidal preforms according to claim 1, characterized in that, The horizontal position adjustment assembly includes a groove at the bottom of the crossbar (9), an adjusting screw (13) rotatably installed in the groove, an adjusting block (14) threaded to the middle of the adjusting screw (13), and a rotating cap (15) fixedly connected to the outer wall of one end of the adjusting screw (13).

4. A rotatable needling device for the production of carbon fiber toroidal preforms according to claim 3, characterized in that, The outer wall of the adjusting block (14) is slidably connected to the inner wall of the slide groove, and the servo electric cylinder (10) is fixed to the bottom outer wall of the adjusting block (14) by bolts.

5. A rotatable needling device for the production of carbon fiber toroidal preforms according to claim 1, characterized in that, The elastic locking claw structure includes a slide rail on the top of the circular needle plate (2), a guide rod (16) fixed in the slide rail, a guide block (17) sleeved on the guide rod (16), an arc-shaped claw (18) fixed to the side wall of the guide block (17), and a locking spring (19) sleeved on the guide rod (16).

6. The rotatable needle punching device for producing carbon fiber ring preforms according to claim 5, characterized in that, The outer wall of the guide block (17) is slidably connected to the inner wall of the slide. One end of the outer wall of the locking spring (19) is fixed to one side of the outer wall of the guide block (17), and the other end of the outer wall of the locking spring (19) is fixed to one side of the inner wall of the guide groove.

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