Double-layer yarn spreading device

Abstract

The utility model discloses a double -deck yarn spreading device, including frame, the frame is provided with two up and down symmetry, and the upstream of two frames is provided with a creel, and the downstream is provided with a yarn combining device, single frame is provided with the yarn separating comb and the even yarn device in proper order along the conveying direction, the comb tooth is arranged with the clearance on the yarn separating comb, and the comb tooth of two yarn separating combs is relatively staggered and is crossed and is established in vertical direction.

Description

Technical Field

[0001] This utility model relates to a double-layer yarn spreading device. Background Technology

[0002] Carbon fiber composites (such as prepregs) require the uniform dispersion of numerous carbon fibers to form a uniform web, and the tension of this web must meet process requirements. Each carbon fiber contains many fine filaments; therefore, the crucial technological aspect lies in how to uniformly disperse these fibers to form a uniform web. This type of device is called a yarn spreading device.

[0003] Current yarn spreading devices are generally single-layer devices. However, for high-area-density meshes, due to spatial constraints, the mesh is still arranged as "individual carbon fibers," rather than a uniform distribution of individual filaments. The drawbacks and shortcomings of high-area-density yarn spreading devices are: 1. Individual carbon fibers lack sufficient space for filaments to fully disperse; 2. Fiber tension is achieved through the wrap angle of the spreading roller, but the spreading roller's other, more important function is yarn spreading, so the fiber tension cannot fully meet the optimal process requirements. Utility Model Content

[0004] The purpose of this invention is to provide a double-layer yarn spreading device to solve the technical problems mentioned in the background section.

[0005] The technical solution to achieve the purpose of this utility model is: a double-layer yarn spreading device, including a frame, two frames are symmetrically arranged on the upper and lower sides, a yarn frame is arranged upstream of the two frames, and a yarn combining device is arranged downstream; each frame is arranged with a yarn separating comb and a yarn leveling device in sequence along the conveying direction, the yarn separating comb has comb teeth arranged with gaps, and the comb teeth of the two yarn separating combs are arranged in a staggered and cross arrangement in the vertical direction.

[0006] Furthermore, each of the frames is provided with two yarn-separating combs along the conveying direction.

[0007] Furthermore, the display frame is equipped with multiple yarn tubes and multiple drive motors, each drive motor corresponding to a yarn tube, and the drive motor drives the yarn tube to rotate and release yarn.

[0008] Furthermore, a guide roller is provided between the display frame and the yarn separating comb.

[0009] Furthermore, the yarn leveling device includes a vertical vibrating guide roller, a horizontal vibrating guide roller, and a lifting guide roller, and at least one of each of the vertical vibrating guide roller, the horizontal vibrating guide roller, and the lifting guide roller is provided.

[0010] Furthermore, two sets of power rollers are provided between the two yarn leveling devices and the yarn combining device. The fibers leveled by the yarn leveling devices are wound around the sets of power rollers and then enter the yarn combining device. The sets of power rollers include at least one power roller.

[0011] Furthermore, two tension rollers are provided between the two yarn leveling devices and the yarn combining device, and the tension rollers are located downstream of the power roller; each tension roller is equipped with a tension sensor.

[0012] Furthermore, the yarn combining device is provided with a pair of rollers, a first guide roller, a horizontal vibrating guide roller, a second guide roller and a pressing unit in sequence along the conveying direction. The pair of rollers combine the fibers processed by the yarn leveling device, and the fibers enter the pressing unit for pressing after passing through the first guide roller, the horizontal vibrating guide roller and the second guide roller in sequence.

[0013] By adopting the above technical solution, this utility model has the following beneficial effects:

[0014] (1) The frame of this utility model is divided into upper and lower layers to form a double-layer yarn spreading. The comb teeth of the two yarn separating combs in the upper and lower layers are staggered and cross-arranged, which can make the fibers of the fiber mesh after being processed by the yarn combining device fully dispersed and evenly distributed, resulting in better quality.

[0015] (2) The single frame of this utility model is equipped with two yarn separating combs. The first yarn separating comb, which is closer to the spreading frame, is used to initially position the fibers conveyed by the spreading frame. The second yarn separating comb can accurately position the fibers to ensure the uniformity of the fiber surface density of the prepreg.

[0016] (3) The present invention has an independent drive motor and a yarn tube that correspond one-to-one, which can control the unwinding of each fiber individually to meet different tension or speed requirements.

[0017] (4) This utility model is equipped with tension rollers in both the upper and lower layers. Tension rollers are equipped with tension sensors to ensure that the fiber tension in the upper and lower layers is consistent. The tension can be monitored and adjusted in real time to achieve precise closed-loop control of tension. Attached Figure Description

[0018] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein...

[0019] Figure 1 This is a schematic diagram of the structure of this utility model.

[0020] Figure 2 This is a schematic diagram of the yarn separating comb of this utility model.

[0021] The labels in the attached diagram are as follows: yarn frame 1, yarn tube 1-1, drive motor 1-2, yarn separating comb 2, comb teeth 2-1, yarn leveling device 3, vertical vibrating guide roller 3-1, horizontal vibrating guide roller 3-2, lifting guide roller 3-3, yarn combining device 4, roller pair 4-1, first guide roller 4-2, second guide roller 4-3, pressing unit 4-4, guide roller 5, power roller 6, tension roller 7, tension sensor 8. Detailed Implementation

[0022] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, 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. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0025] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0026] In the description of the embodiments of this utility model, it should be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the utility model product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The utility model will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of this utility model and should not be used to limit the scope of protection of this utility model.

[0028] (Example 1)

[0029] See Figure 1-2 The double-layer yarn spreading device of this embodiment includes a frame, two of which are symmetrically arranged on the upper and lower sides. A yarn frame 1 is arranged upstream of the two frames and a yarn combining device 4 is arranged downstream. Each frame is arranged with a yarn separating comb 2 and a yarn leveling device 3 in sequence along the conveying direction. The yarn separating comb 2 has comb teeth 2-1 arranged with gaps on it. The comb teeth 2-1 of the two yarn separating combs 2 are arranged in a staggered and cross arrangement in the vertical direction.

[0030] Specifically, the yarn frame 1 is equipped with multiple yarn tubes 1-1 and multiple drive motors 1-2. Each drive motor 1-2 corresponds to one yarn tube 1-1. The drive motor 1-2 drives the yarn tube 1-1 to rotate and release the yarn, which can individually control the unwinding of each fiber to adapt to different tension or speed requirements.

[0031] A guide roller 5 is provided between the yarn frame 1 and the yarn separating comb 2. The guide roller 5 is used to guide the fibers and introduce them straight into the yarn separating comb 2. In this embodiment, the comb teeth 2-1 of the yarn separating comb 2 on the upper and lower frames are staggered and intersecting in the vertical direction. After the fibers on the yarn tube 1-1 pass through the guide roller 5, they pass through the gap between two adjacent comb teeth 2-1. Therefore, the fibers of the upper and lower layers are also staggered in the vertical projection direction, making the fiber distribution more uniform.

[0032] As a preferred embodiment, another yarn separating comb 2 is provided between the yarn separating comb 2 and the yarn leveling device 3, that is, two yarn separating combs 2 are provided on a single frame. The first yarn separating comb 2, which is closer to the yarn frame 1, is used to initially position the fibers conveyed from the yarn frame 1, and the second yarn separating comb 2 can accurately position the fibers to ensure the uniformity of the fiber surface density of the prepreg. Guide rollers and lifting guide rollers 3-3 can be provided between the two yarn separating combs 2.

[0033] After passing through the yarn separating comb 2, the fibers enter the yarn leveling device 3. The yarn leveling device 3 includes a vertical vibrating guide roller 3-1, a horizontal vibrating guide roller 3-2, and a lifting guide roller 3-3, with at least one of each. The vertical vibrating guide roller 3-1 can vibrate up and down, the horizontal vibrating guide roller 3-2 can vibrate horizontally left and right, and the lifting guide roller 3-3 can be adjusted up and down to change the wrap angle and thus adjust the tension.

[0034] Two sets of power rollers are provided between the yarn leveling device 3 and the yarn combining device 4. After the yarn is leveled by the yarn leveling device 3, the fibers are wound around the sets of power rollers and then enter the yarn combining device 4. The sets of power rollers include at least one power roller 6.

[0035] Two tension rollers 7 are installed between the two yarn leveling devices 3 and the yarn combining device 4. The tension rollers 7 are located downstream of the power roller 6. Each tension roller 7 is equipped with a tension sensor 8. Tension rollers 7 are installed on both the upper and lower layers. The tension rollers 7 are equipped with tension sensors 8 to ensure that the fiber tension of the upper and lower layers is consistent. The tension can be monitored and adjusted in real time to achieve precise closed-loop control of tension.

[0036] The yarn combining device 4 is provided with a pair of rollers 4-1, a first guide roller 4-2, a horizontal vibrating guide roller 3-2, a second guide roller 4-3 and a pressing unit 4-4 in sequence along the conveying direction. The pair of rollers 4-1 combine the fibers processed by the yarn leveling device 3. The fibers pass through the first guide roller 4-2, the horizontal vibrating guide roller 3-2 and the second guide roller 4-3 in sequence and then enter the pressing unit 4-4 for pressing, so that the two layers of fibers are combined into a single uniform fiber.

[0037] The frame of this invention is divided into upper and lower layers to form a double-layer yarn spreading. The comb teeth 2-1 of the two yarn separating combs 2 in the upper and lower layers are arranged in a staggered and cross manner, which can make the fibers of the fiber mesh after being processed by the yarn combining device 4 fully dispersed and evenly distributed, resulting in better quality.

[0038] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. 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 double-layer yarn spreading device, characterized in that: The machine includes a frame, two of which are symmetrically arranged vertically. A yarn frame (1) is arranged upstream of the two frames, and a yarn combining device (4) is arranged downstream. Each frame is provided with a yarn separating comb (2) and a yarn leveling device (3) in sequence along the conveying direction. The yarn separating comb (2) has comb teeth (2-1) arranged with gaps on it. The comb teeth (2-1) of the two yarn separating combs (2) are arranged in a staggered and cross arrangement in the vertical direction.

2. The double-layer yarn spreading device according to claim 1, characterized in that: Two yarn-separating combs (2) are provided on a single frame along the conveying direction.

3. The double-layer yarn spreading device according to claim 1, characterized in that: The yarn frame (1) is provided with multiple yarn tubes (1-1) and multiple drive motors (1-2). Each drive motor (1-2) corresponds to a yarn tube (1-1), and the drive motor (1-2) drives the yarn tube (1-1) to rotate and release yarn.

4. The double-layer yarn spreading device according to claim 1, characterized in that: A guide roller (5) is provided between the yarn frame (1) and the yarn separating comb (2).

5. A double-layer yarn spreading device according to claim 1, characterized in that: The yarn spreading device (3) includes a vertical vibrating guide roller (3-1), a horizontal vibrating guide roller (3-2), and a lifting guide roller (3-3), and at least one of each of the vertical vibrating guide roller (3-1), the horizontal vibrating guide roller (3-2), and the lifting guide roller (3-3) is provided.

6. The double-layer yarn spreading device according to claim 1, characterized in that: Two sets of power rollers are provided between the two yarn leveling devices (3) and the yarn combining device (4). After the yarn is leveled by the yarn leveling device (3), the fibers are wound around the sets of power rollers and then enter the yarn combining device (4). The sets of power rollers include at least one power roller (6).

7. A double-layer yarn spreading device according to claim 1, characterized in that: Two tension rollers (7) are provided between the two yarn leveling devices (3) and the yarn combining device (4). The tension rollers (7) are located downstream of the power roller (6). Each tension roller (7) is equipped with a tension sensor (8).

8. A double-layer yarn spreading device according to claim 1, characterized in that: The yarn combining device (4) is provided with a pair of rollers (4-1), a first guide roller (4-2), a horizontal vibrating guide roller (3-2), a second guide roller (4-3), and a pressing unit (4-4) in sequence along the conveying direction. The pair of rollers (4-1) combines the fibers processed by the yarn leveling device (3). The fibers pass through the first guide roller (4-2), the horizontal vibrating guide roller (3-2), and the second guide roller (4-3) in sequence before entering the pressing unit (4-4) for pressing.

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