Silk withdrawing device capable of preventing carbon fibers from overturning

Abstract

The utility model discloses a yarn withdrawing device for preventing carbon fiber from turning over, which is provided with a yarn guide wheel for preventing fiber from turning over, a yarn withdrawing frame is arranged in front of the anti-turning yarn guide wheel, the anti-turning yarn guide wheel is provided with a bearing and a yarn guide roller which enable the fiber to change the operation angle, and the axis of the anti-turning yarn guide wheel and the axis of the bearing are coaxially arranged. The axis of the anti-overturning godet wheel is perpendicular to the axis of the godet roller, the axis of the bearing is perpendicular to the axis of the godet roller in space but not intersected with the axis of the godet roller, a godet supporting roller is arranged behind the godet wheel, and a cambered surface roller and a yarn spreading roller which have a yarn spreading function are arranged behind the godet supporting roller. The device can be widely applied to the production of carbon fiber composite materials, and can prevent the defects of cracks, wool balls, holes and the like on the surface of the finally obtained prepreg due to non-uniform yarn spreading width of the carbon fibers caused by steering of the carbon fibers in a yarn withdrawing process, twisting and turned edges generated by turning of the carbon fibers are rolled into a prepreg finished product, and the product quality is improved. Defects can seriously influence the strength of the prepreg, so that the quality of a composite material component is influenced.

Description

Technical Field

[0001] The utility model belongs to the technical field of high-performance composite material preparation, in particular to a fiber withdrawal device for preventing carbon fiber from turning over. Background Art

[0002] Driven by the demands of various industries, the application scope of carbon fiber prepreg is becoming more and more extensive. However, during the production of carbon fiber prepreg, it is easy to have defects on the surface due to the influence of various factors such as the production process. When producing carbon fiber prepreg, due to the influence of yarn separation, yarn drawing and yarn spreading devices, there is a phenomenon of uneven yarn spreading. The unevenly distributed carbon fiber undergoes subsequent processes such as upper and lower film unwinding devices, and the final prepreg surface will have defects such as cracks, hair balls, and holes. Defects will have a serious impact on the strength of the prepreg, especially in the fields of wind power, aerospace, etc. Defects will have a fatal impact on carbon fiber structural parts, leading to application accidents and causing serious economic losses. Utility Model Content

[0003] The utility model aims to provide a fiber reeling device which can prevent carbon fiber from turning over during the fiber reeling process, so as to solve the technical problem that the fibers are easily turned over during the existing carbon fiber reeling process.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a wire withdrawing device for preventing carbon fiber from flipping over, comprising a wire withdrawing frame and a wire guide wheel; the carbon fiber bundle guided out by the wire withdrawing frame passes through the inside of the wire guide wheel, and the wire guide wheel is used to prevent the carbon fiber from flipping over; a bearing is arranged inside the wire guide wheel, and a mounting hole is opened in the middle position of the bearing, and a wire guide roller is rotatably arranged in the mounting hole, and the carbon fiber bundle moves along the rotation direction of the wire guide roller.

[0005] Furthermore, the axes of the guide wheel and the bearing are coaxially arranged, the axis of the guide wheel is perpendicular to the axis of the guide roller, and the axis of the bearing and the axis of the guide roller are perpendicular in space but do not intersect.

[0006] Furthermore, a wire supporting roller is arranged at the outlet direction of the wire guide wheel.

[0007] Furthermore, a curved roller and a yarn spreading roller are arranged in the outlet direction of the wire supporting roller.

[0008] Furthermore, the axis of the wire withdrawal frame, the axis of the wire guide wheel, the axis of the wire support roller, the axis of the curved roller and the axis of the yarn spreading roller are arranged parallel to each other.

[0009] Furthermore, the guide wire wheel is located above the wire withdrawal frame at a distance of 20-30 cm; the wire support roller is located below the guide wire wheel at a distance of 10-20 cm; the arc roller is located below the wire support roller at a distance of 5 cm; and the yarn spreading roller and the arc roller are at the same level.

[0010] Furthermore, the materials used for the wire support roller, the curved roller, the yarn spreading roller and the wire guide roller are single metal, stainless steel, polytetrafluoroethylene or ceramic material; the roller body is polished, the contact surface is smooth, and the surface friction coefficient is 0.01-0.15.

[0011] Furthermore, the diameter of the curved roller is large in the middle and gradually decreases towards the sides. When the carbon fiber passes through its surface, the width of the carbon fiber tow increases slightly.

[0012] Furthermore, the roller body of the yarn spreading roller is a triangular prism, a quadrangular prism or a multi-prism, and the surface of the small roller on the edge is smooth. When the carbon fiber passes through the surface, the width of the carbon fiber bundle increases.

[0013] Compared with the prior art, the beneficial effects of the utility model are: simple in form, easy to operate, and easy to clean, and can ensure that the carbon fiber does not flip during the withdrawal process, and does not twist before entering the yarn spreading system, so that the damage to the carbon fiber caused by turning is minimized. During the withdrawal process, the fiber reciprocates left and right on the paper tube, and the guide roller with a bearing can change the fiber withdrawal angle during the withdrawal process, so that the fiber remains taut and close to the guide roller to prevent flipping; the arc roller can initially stretch the carbon fiber, and the yarn spreading roller can increase the width of the carbon fiber, so that the subsequent fiber feeding is less likely to flip. The use of the utility model can prevent the twisting caused by the flipping of the carbon fiber during the withdrawal process from being drawn into the finished product, and can reduce the significant damage caused by the turning of the fiber during winding.

[0014] In order to more clearly illustrate the functional characteristics and structural parameters of the utility model, further description is given below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0016] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is an enlarged schematic diagram of the wire guide wheel of the utility model;

[0018] The reference numerals in the figure are: 1-wire withdrawal frame; 2-wire guide wheel; 3-wire supporting roller; 4-arc roller; 5-yarn spreading roller; 6-bearing; 7-wire guide roller. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0020] like Figure 1 , Figure 2 As shown, the utility model is provided with a guide wheel 2 for preventing the fiber from turning over, a wire withdrawal frame 1 is provided in front of the guide wheel 2, and the guide wheel 2 is provided with a bearing 6 and a guide roller 7 for changing the running angle of the fiber, the axis of the guide wheel 2 is coaxially arranged with the axis of the bearing 6, the axis of the guide wheel 2 is perpendicularly arranged with the axis of the guide roller 7, the axis of the bearing 6 is perpendicularly arranged with the axis of the guide roller 7 in space but not intersecting, a wire support roller 3 is provided behind the guide wheel 2, and a curved roller 4 and a yarn spreading roller 5 with a wire spreading function are provided behind the wire support roller 3. The axis of the guide wheel 2, the axis of the wire withdrawal frame 1, the axis of the wire support roller 3, the axis of the curved roller 4 and the axis of the yarn spreading roller 5 are arranged parallel to each other.

[0021] Specifically, the axis of the wire withdrawal frame 1, the axis of the wire guide wheel 2, the axis of the wire support roller 3, the axis of the curved roller 4 and the axis of the yarn spreading roller 5 are arranged parallel to each other.

[0022] Specifically, the guide wheel 2 is located above the wire withdrawal frame 1, at a distance of 20-30 cm; the wire support roller 3 is located below the guide wheel 2, at a distance of 10-20 cm; the arc roller 4 is located below the wire support roller 3, at a distance of 5 cm; the yarn spreading roller 5 and the arc roller 4 are at the same level.

[0023] Specifically, the materials used for the wire support roller 3, the curved roller 4, the yarn spreading roller 5 and the wire guide roller 7 are single metal, stainless steel, polytetrafluoroethylene or ceramic materials; the roller body is polished, the contact surface is smooth, and the surface friction coefficient is 0.01-0.15.

[0024] Specifically, the diameter of the curved roller 4 is large in the middle and gradually decreases toward both sides.

[0025] Specifically, the roller body of the yarn spreading roller 5 is a triangular prism, a quadrangular prism or a polygonal prism, and the surface of the small rollers on the edges is smooth.

[0026] Example

[0027] In the de-filament process of the carbon fiber prepreg production process, the carbon fiber passes through the de-filament frame 1, the guide roller 7 in the anti-flip guide wheel 2, the support roller 3, the curved roller 4, and the yarn spreading roller 5 in sequence to complete the subsequent prepreg production process.

[0028] Comparative Example 1:

[0029] In the de-filament process of the carbon fiber prepreg production process, the carbon fiber passes through the de-filament frame 1 and the wire roller 3 in sequence to complete the subsequent prepreg production process.

[0030] Comparative Example 2:

[0031] In the de-filament process of the carbon fiber prepreg production process, the carbon fiber passes through the de-filament frame 1, the guide roller 7 in the anti-flip guide wheel 2, and the support roller 3 in sequence to complete the subsequent prepreg production process.

[0032] Comparative Example 3:

[0033] In the de-filament process of the carbon fiber prepreg production process, the carbon fiber passes through the de-filament frame 1, the wire support roller 3, the curved roller 4, and the yarn spreading roller 5 in sequence to complete the subsequent prepreg production process.

[0034] The quality of the prepregs prepared in the examples and comparative examples was evaluated. The twist number, the number of flash seams (between tows), and the number of flash seams (between tows) of each 25 m prepreg were tested for comparison. The specific data are shown in Table 1 below.

[0035] Table 1

[0036]

[0037] It can be seen from Table 1 that the quality of the prepreg in the embodiment is significantly better than that in the comparative example, and its twist number is zero, indicating that when the fiber passes through the anti-flipping guide wheel, the damage to the filament bundle during operation is relatively small, and the rotation of the bearing can keep the fiber in a taut state during the reciprocating left and right movement of the paper tube, close to the guide roller, and there is no flipping, curling, or twisting before entering the yarn spreading system. The arc roller and the yarn spreading roller have a certain unfolding effect on the fiber, so that the fiber can be initially and evenly unfolded in the initial filament withdrawal stage, the width of the initially unfolded fiber is increased, and the flash seams between the obtained prepreg filament bundles are significantly reduced. The difference in the number of flash seams in the filament bundles of the embodiment and the comparative example is not obvious, and it is inferred that it is mainly affected by the quality of the fiber itself.

[0038] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fiber-retracting device for preventing carbon fiber from flipping, characterized in that: The invention comprises a wire withdrawal frame (1) and a wire guide wheel (2); the carbon fiber bundle guided by the wire withdrawal frame (1) passes through the inside of the wire guide wheel (2), and the wire guide wheel (2) is used to prevent the carbon fiber from turning over; a bearing (6) is arranged inside the wire guide wheel (2), a mounting hole is opened in the middle position of the bearing (6), a wire guide roller (7) is rotatably arranged in the mounting hole, and the carbon fiber bundle moves along the rotation direction of the wire guide roller (7).

2. A fiber-retracting device for preventing carbon fiber from flipping according to claim 1, characterized in that: The axes of the guide wheel (2) and the bearing (6) are coaxially arranged, the axis of the guide wheel (2) is perpendicular to the axis of the guide roller (7), and the axis of the bearing (6) is perpendicular to the axis of the guide roller (7) in space but does not intersect.

3. A fiber-retracting device for preventing carbon fiber from flipping according to claim 1, characterized in that: A wire supporting roller (3) is arranged in the outlet direction of the wire guide wheel (2).

4. A fiber-retracting device for preventing carbon fiber from flipping according to claim 3, characterized in that: A curved surface roller (4) and a yarn spreading roller (5) are arranged at the outlet direction of the yarn supporting roller (3).

5. A fiber-retracting device for preventing carbon fiber from flipping according to claim 4, characterized in that: The axis of the wire withdrawal frame (1), the axis of the wire guide wheel (2), the axis of the wire support roller (3), the axis of the curved surface roller (4) and the axis of the yarn spreading roller (5) are arranged parallel to each other.

6. A fiber-retracting device for preventing carbon fiber from flipping according to claim 4 or 5, characterized in that: The guide wire wheel (2) is located above the wire withdrawal frame (1) at a distance of 20-30 cm; the wire support roller (3) is located below the guide wire wheel (2) at a distance of 10-20 cm; the curved roller (4) is located below the wire support roller (3) at a distance of 5 cm; and the yarn spreading roller (5) and the curved roller (4) are at the same level.

7. A fiber-retracting device for preventing carbon fiber from flipping according to claim 4, characterized in that: The materials used for the wire support roller (3), the curved roller (4), the yarn spreading roller (5) and the wire guide roller (7) are single metal, stainless steel, polytetrafluoroethylene or ceramic material; the roller body is polished, the contact surface is smooth, and the surface friction coefficient is 0.01-0.

15.

8. A fiber-retracting device for preventing carbon fiber from flipping according to claim 4, characterized in that: The diameter of the curved roller (4) is large in the middle and gradually decreases towards both sides.

9. A fiber-retracting device for preventing carbon fiber from flipping according to claim 4, characterized in that: The roller body of the yarn spreading roller (5) is a triangular prism, a quadrangular prism or a polygonal prism, and the surface of the small roller on the edge is smooth.

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