Carbon fiber filament winding machine with new type of guide wire head

Abstract

The utility model provides a kind of carbon fiber winding machine with novel guide head, comprising: for installing the winding mechanism of mandrel and for installing the unwinding mechanism of prepreg tape, the unwinding mechanism is connected with guide head near one end of the winding mechanism, the guide head is configured to be able to rotate around vertical direction, to adjust the deflection angle of the prepreg tape, so that the prepreg tape is always stably fitted on the guide head. To greatly improve the stability and consistency of winding process.

Description

Technical Field

[0001] This utility model relates to the technical field of composite material production equipment, and in particular to a carbon fiber winding machine with a novel guide head. Background Technology

[0002] Carbon fiber winding technology is a molding process that uses continuous carbon fiber prepreg tape as reinforcement. It involves continuously and uniformly winding fibers along a predetermined path onto the surface of a rotating mandrel, optimizing the fiber arrangement along the main stress direction of the structure. After winding, a hollow rotating body or complex component of a predetermined shape can be obtained through demolding.

[0003] This technology, through precise control of fiber winding angle, winding trajectory and stacking method, can orient the high strength and high modulus characteristics of carbon fiber in the axial direction to the key load-bearing direction of the product, thereby achieving the optimal configuration of mechanical properties at the material level.

[0004] However, in existing technologies, carbon fiber winding machines mostly use cylindrical guide rollers to guide the fibers. Because the carbon fiber prepreg tape itself is flat, it is prone to significant lateral swaying and instability when passing through the cylindrical guide rollers. This not only easily leads to faults such as twisting and folding of the carbon fiber prepreg tape, but also often results in uneven fiber distribution, such as gaps or overlaps on the mandrel surface, when winding small-diameter cylinders, severely affecting the winding quality and performance consistency of carbon fiber products. Utility Model Content

[0005] To address the problems existing in the prior art, this utility model provides a carbon fiber winding machine with a novel guide head, comprising: a winding mechanism for mounting the mandrel and an unwinding mechanism for mounting the prepreg tape. The unwinding mechanism is connected to a wire guide head at one end near the winding mechanism. The guide wire head is configured to rotate in a vertical direction to adjust the deflection angle of the prepreg tape, so that the prepreg tape is always stably attached to the guide wire head.

[0006] Furthermore, the unwinding mechanism is also connected to a guide wheel located between the prepreg installation point and the guide head, and the axial direction of the guide wheel is parallel to the axial direction of the mandrel.

[0007] Furthermore, the guide head includes a guide head bracket connected to the unwinding mechanism, and a guide bearing is connected to the guide head bracket, the inner ring of the guide bearing having a guide surface.

[0008] Furthermore, the guide surface is an arc-shaped curved surface.

[0009] Furthermore, the unwinding mechanism includes a base and an unwinding support, the unwinding support being slidably connected to the base in a direction parallel to the axial direction of the mandrel, a winding roller shaft being rotatably connected to the unwinding support, and a tensioning device being connected to the winding roller shaft.

[0010] Furthermore, a drive device is connected between the unwinding support and the base. The drive device includes a rack disposed on the base and a gear disposed on the unwinding support. The gear meshes with the rack and is connected to a drive motor.

[0011] Furthermore, the winding mechanism includes two spaced-apart winding supports, each connected to a drive shaft and a driven shaft for clamping and rotating the core mold, and the drive shaft is connected to a rotary motor.

[0012] Compared with the prior art, the beneficial effects of this utility model are: This invention relates to a carbon fiber winding machine with a novel guide head. The guide head can rotate vertically, and as the prepreg reciprocates helically on the mandrel surface, the guide head rotates along with the prepreg, ensuring the prepreg remains stably attached to the guide head. Furthermore, the extension direction of the prepreg is always perpendicular to the tangent between the prepreg and the guide head. This maintains uniform tension and controllable direction of the prepreg during the guiding process, effectively avoiding fiber swaying, twisting, and folding caused by shape mismatches in traditional cylindrical guide rollers, thus significantly improving the stability and consistency of the winding process. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the carbon fiber winding machine with a novel guide head according to this utility model; Figure 2 This is a schematic diagram of the structure of the carbon fiber winding machine with a novel guide head according to this utility model; Figure 3 This is a front view of the carbon fiber winding machine with a novel guide head according to this utility model; Figure 4 This is a side view of the carbon fiber winding machine with a novel guide head according to this utility model; Figure 5 This is a schematic diagram of the structure of the guide wire head of this utility model; In the picture: 1. Winding mechanism; 11. Core mold; 12. Winding bracket; 13. Drive shaft; 14. Driven shaft; 15. Rotary motor; 2. Unwinding mechanism; 21. Base; 22. Slide rail; 23. Unwinding support; 24. Winding roller; 25. Tensioning device; 26. Drive device; 261. Drive motor; 262. Rack; 27. Guide wheel; 28. Guide head; 281. Guide head bracket; 282. Guide bearing; 3. Prepreg tape. Detailed Implementation

[0014] To facilitate understanding of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0015] In the description of this utility model, it should be understood that the terms "inner", "outer", "upper", "lower", "left" and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this utility model.

[0016] refer to Figures 1 to 4 As shown, this utility model discloses a carbon fiber winding machine with a novel guide head, comprising: a winding mechanism 1 for mounting the mandrel 11 and an unwinding mechanism 2 for mounting the prepreg tape 3. The unwinding mechanism 2 is connected to a guide head 28 at one end near the winding mechanism 1. The guide head 28 is configured to rotate vertically to adjust the deflection angle of the prepreg tape 3, ensuring that the prepreg tape 3 remains stably attached to the guide head 28. Furthermore, the extension direction of the prepreg tape 3 is always perpendicular to the tangential direction between the prepreg tape 3 and the guide head 28.

[0017] In existing technologies, carbon fiber winding machines mostly use cylindrical guide rollers to guide the fibers. During helical winding, the winding angle is less than 90° (common range 15°-85°), and the prepreg tape 3 moves back and forth in a spiral pattern on the surface of the mandrel 11. Because the prepreg tape 3 itself is flat, it is prone to large-scale lateral swaying and instability when passing through the cylindrical guide rollers. This not only easily leads to faults such as twisting and folding of the carbon fiber prepreg tape 3, but also often results in uneven laying of the prepreg tape 3 on the surface of the mandrel 11, such as gaps or overlaps, when winding small-diameter cylinders, seriously affecting the winding quality and performance consistency of carbon fiber products.

[0018] The carbon fiber winding machine of this invention, equipped with a novel guide head, features a guide head 28 that can rotate vertically. As the prepreg tape 3 reciprocates in a spiral motion on the surface of the mandrel 11, the guide head 28 rotates along with the reciprocating motion of the prepreg tape 3, ensuring that the prepreg tape 3 remains stably attached to the guide head 28. Furthermore, the extension direction of the prepreg tape 3 is always perpendicular to the tangential direction of the prepreg tape 3 and the guide head 28. This ensures that the prepreg tape 3 maintains uniform tension and controllable direction during the guiding process, effectively avoiding the fiber swaying, twisting, and folding phenomena caused by the mismatched shape of traditional cylindrical guide rollers, thereby significantly improving the stability and consistency of the winding process.

[0019] refer to Figure 5 As shown, in some embodiments, the guide head 28 includes a guide head bracket 281 connected to the unwinding mechanism 2. A guide bearing 282 is connected to the guide head bracket 281. Specifically, one end of the guide head bracket 281 is welded to the unwinding mechanism 2, and the other end is welded to the outer ring of the guide bearing 282. The inner ring of the guide bearing 282 has a guide surface, which is an arc-shaped curved surface. After the prepreg tape 3 comes from the unwinding mechanism 2, it passes through the inner ring of the guide bearing 282 and adheres to the guide surface, then winds onto the mandrel 11. When the prepreg tape 3 reciprocates in a spiral motion on the surface of the mandrel 11, it drives the inner ring of the guide bearing 282 to rotate around the outer ring, thereby adjusting the output angle of the prepreg tape 3 in real time. This ensures that the prepreg tape 3 always adheres to the guide surface. Furthermore, the extension direction of the prepreg tape 3 is always perpendicular to the tangent direction between the prepreg tape 3 and the guide surface. This ensures that the prepreg tape 3 maintains uniform tension and controllable direction during the guiding process.

[0020] refer to Figure 1 As shown, in some embodiments, the unwinding mechanism 2 is further connected to a guide wheel 27 located between the winding roller 24 and the guide head 28, the axial direction of the guide wheel 27 being parallel to the axial direction of the mandrel 11. The guide wheel 27 is used to guide the prepreg tape 3 into the guide head 28, preventing interference from other components with the prepreg tape 3 and avoiding damage, contamination, or unexpected tension changes in the prepreg tape 3 caused by external interference. It can also adjust the angle at which the prepreg tape 3 enters the guide head 28. This ensures that the prepreg tape 3 is effectively constrained and aligned in the horizontal direction before entering the dynamically adjusted guide head 28, establishing a stable and predictable initial condition for subsequent precise winding.

[0021] refer to Figures 1 to 2 As shown, in some embodiments, the unwinding mechanism 2 includes a base 21 and an unwinding support 23, wherein the unwinding support 23 is slidably connected to the base 21 in a direction parallel to the axial direction of the mandrel 11. Specifically, the base 21 is provided with two parallel slide rails 22, and the bottom of the unwinding support 23 is provided with a groove corresponding to the slide rails 22.

[0022] The unwinding support 23 includes a horizontal plate and a vertical plate. A winding roller 24 is rotatably connected to the vertical plate, and a tensioning device 25 is connected to one end of the winding roller 24 that passes through the vertical plate. Preferably, the tensioning device 25 is a magnetic powder brake. The magnetic powder brake maintains a constant and stable tension of the prepreg tape 3 by controlling the braking torque. This ensures that the prepreg tape 3 is tightly and uniformly arranged on the surface of the mandrel 11, preventing looseness, bridging, or overlap, thereby ensuring the uniformity of fiber volume fraction.

[0023] In some embodiments, a drive device 26 is further connected between the unwinding support 23 and the base 21. The drive device 26 includes a rack 262 disposed on the base 21 and a gear disposed on the unwinding support 23. The gear meshes with the rack 262 and is connected to a drive motor 261. When the drive motor 261 rotates, it drives the unwinding support 23 to slide along a slide rail against the base 21, thereby achieving a helical reciprocating motion of the prepreg tape 3 on the surface of the mandrel 11.

[0024] refer to Figures 1 to 3 As shown, in some embodiments, the winding mechanism 1 includes two spaced-apart winding supports 12, which are bolted to the base 21. The distance between the two winding supports 12 can be adjusted to accommodate mandrels 11 of different specifications. One winding support 12 is connected to a drive shaft 13, and the other winding support 12 is connected to a driven shaft 14. The driven shaft 14 is axially adjustable to clamp the mandrel 11 between the drive shaft 13 and the driven shaft 14. The drive shaft 13 is connected to a rotary motor 15. When the rotary motor 15 rotates, it drives the drive shaft 13 to rotate, which in turn drives the mandrel 11 to rotate, thereby winding the prepreg tape 3 around the surface of the mandrel 11.

[0025] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A carbon fiber winding machine with a novel guide head, comprising: The winding mechanism (1) for mounting the mandrel (11) and the unwinding mechanism (2) for mounting the prepreg tape (3) are characterized in that, The unwinding mechanism (2) is connected to a guide head (28) at one end near the winding mechanism (1). The guide head (28) is configured to rotate in a vertical direction to adjust the deflection angle of the prepreg tape (3) so that the prepreg tape (3) is always stably attached to the guide head (28).

2. The carbon fiber winding machine with a novel guide head according to claim 1, characterized in that, The unwinding mechanism (2) is also connected to a guide wheel (27) located between the mounting point of the prepreg tape (3) and the guide head (28), and the axial direction of the guide wheel (27) is parallel to the axial direction of the mandrel (11).

3. The carbon fiber winding machine with a novel guide head according to claim 1, characterized in that, The guide head (28) includes a guide head bracket (281) connected to the unwinding mechanism (2), and a guide bearing (282) is connected to the guide head bracket (281). The inner ring of the guide bearing (282) is provided with a guide surface.

4. The carbon fiber winding machine with a novel guide head according to claim 3, characterized in that, The guide surface is an arc-shaped curved surface.

5. The carbon fiber winding machine with a novel guide head according to claim 1, characterized in that, The unwinding mechanism (2) includes a base (21) and an unwinding support (23). The unwinding support (23) is slidably connected to the base (21) in a direction parallel to the axial direction of the core mold (11). A winding roller (24) is rotatably connected to the unwinding support (23), and a tensioning device (25) is connected to the winding roller (24).

6. The carbon fiber winding machine with a novel guide head according to claim 5, characterized in that, A drive device (26) is also connected between the unwinding support (23) and the base (21). The drive device (26) includes a rack (262) disposed on the base (21) and a gear disposed on the unwinding support (23). The gear meshes with the rack (262) and the gear is connected to a drive motor (261).

7. The carbon fiber winding machine with a novel guide head according to claim 1, characterized in that, The winding mechanism (1) includes two winding brackets (12) spaced apart. The two winding brackets (12) are respectively connected to a drive shaft (13) and a driven shaft (14) for clamping and driving the core mold (11) to rotate. The drive shaft (13) is connected to a rotary motor (15).

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