Online adjusting device for fiber yarn spreading

Abstract

The utility model relates to the technical field of composite material production, in particular to an on-line adjusting device for fiber yarn spreading, which comprises a first tension fixed roller, a second tension fixed roller, a third tension fixed roller and a fourth tension fixed roller which are connected to a support frame, a first floating roller is arranged between the second tension fixed roller and the third tension fixed roller, and a second floating roller is arranged between the second tension fixed roller and the fourth tension fixed roller. A second floating roller is arranged between the third tensioning fixed roller and the fourth tensioning fixed roller; a fiber bundle to be spread sequentially bypasses the first tensioning fixed roller, the second tensioning fixed roller, the first floating roller, the third tensioning fixed roller, the second floating roller and the fourth tensioning fixed roller. According to the utility model, the two floating rollers are designed, the floating of each floating roller can change the tension of fibers, and the tension is adjusted by actually observing the hairiness generation condition in the yarn spreading process in the production, so that the fibers can be uniformly spread on the surface of the roller group, and the hairiness generation is controlled; and the appearance and the mechanical property of a product formed after subsequent infiltration can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of composite material production, in particular to an online regulating device for fiber yarn spreading. Background Art

[0002] With the emergence of green, environmental protection and lightweight requirements in countries around the world, they have gradually become the mainstream of products on the market today. As a result, major changes have taken place in various fields of transportation and transport, and lightweight has become an important part of this change. Thermoplastic continuous fiber reinforced materials have been widely used in this field due to their high comprehensive performance. They have alleviated the pressure on the environment caused by the inability to recycle thermosetting composite materials, and truly realized the replacement of steel with plastic.

[0003] During the production process of thermoplastic continuous fiber reinforced materials, due to the fiber yarn roll's own factors and the influence of environmental humidity, each roll of yarn cannot be effectively unfolded during production, resulting in surface cracks on the prepreg tape and hair balls caused by fiber breakage, which seriously affects the product's appearance quality and mechanical properties. Utility Model Content

[0004] In view of the technical problems existing in the fiber yarn spreading process in the prior art, the first aspect of the utility model proposes an online adjustment device for fiber yarn spreading, comprising a first tensioning fixed roller, a second tensioning fixed roller, a third tensioning fixed roller and a fourth tensioning fixed roller connected to a support frame, a first floating roller is provided between the second tensioning fixed roller and the third tensioning fixed roller, and a second floating roller is provided between the third tensioning fixed roller and the fourth tensioning fixed roller;

[0005] The fiber bundle to be spread passes around the first tensioning roller, the second tensioning roller, the first floating roller, the third tensioning roller, the second floating roller and the fourth tensioning roller in sequence;

[0006] Wherein, the first tensioning roller and the fourth tensioning roller have the same height, and the second tensioning roller and the third tensioning roller have the same height;

[0007] The first floating roller and the second floating roller are arranged to be able to move away from or approach the support frame in a specified direction to change the wrap angle between the fiber bundle and the first floating roller and / or the second floating roller to adjust the tension of the fiber bundle.

[0008] Preferably, both the tensioning fixed roller and the floating roller are provided with an axially arranged insertion hole, and a heating component is provided in the insertion hole, and the heating component is used to heat the second tensioning fixed roller to a predetermined temperature.

[0009] Preferably, the jack is a blind hole.

[0010] Preferably, the heating component is a rod-shaped structure, the rod-shaped structure is inserted into the insertion hole, and the gap between the rod-shaped structure and the insertion hole is less than 2 mm.

[0011] Preferably, the surfaces of all the tensioning fixed rollers and floating rollers are provided with an aluminum oxide structural layer, and the surface roughness of the aluminum oxide structural layer is 0.01-0.05.

[0012] Preferably, the Rockwell hardness of the aluminum oxide structural layer is 68.

[0013] Preferably, the outer diameter of the alumina structural layer is 120 mm.

[0014] Preferably, the first floating roller is connected to a first driving component, the second floating roller is connected to a second driving component, and the first driving component and the second driving component include an electric telescopic rod.

[0015] Preferably, the telescopic direction of the electric telescopic rod is a vertical direction.

[0016] Preferably, the second tensioning roller is higher than the first tensioning roller, and the first floating roller is higher than the second tensioning roller.

[0017] Compared with the prior art, the advantages of the utility model are:

[0018] The utility model designs two floating rollers, and the floating of each floating roller can change the tension of the fiber. The tension is adjusted by actually observing the generation of hairiness during the yarn spreading process in production, so that the fiber can be evenly spread on the surface of the roller group and the generation of hairiness is controlled, which can improve the appearance and mechanical properties of the product formed after subsequent infiltration. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are not intended to be drawn to scale. In the accompanying drawings, each identical or nearly identical component shown in various figures may be represented by the same reference numeral. For the sake of clarity, not every component is labeled in each figure. Now, embodiments of various aspects of the utility model will be described by way of example and with reference to the accompanying drawings, in which:

[0020] Figure 1 It is a structural schematic diagram of an online regulating device for fiber yarn spreading shown in the utility model. DETAILED DESCRIPTION

[0021] In order to better understand the technical content of the present invention, specific embodiments are described below in conjunction with the accompanying drawings.

[0022] Before entering the impregnation tank, the glass fibers are in bundles, with each fiber stacked on top of another. Due to uneven humidity, local fibers may break due to high tension during yarn spreading, resulting in hairiness, or local fibers may not be able to unfold, resulting in gaps on the entire prepreg surface. This will cause defects in the product formed after subsequent dipping and affect the appearance and mechanical properties. Therefore, how to evenly unfold the fibers is the problem to be solved in this application.

[0023] like Figure 1 As shown, the first aspect of the utility model proposes an online adjustment device for fiber yarn spreading, including a first tensioning roller 1, a second tensioning roller 2, a third tensioning roller 4 and a fourth tensioning roller 6 connected to a support frame, a first floating roller 3 is provided between the second tensioning roller 2 and the third tensioning roller 4, and a second floating roller 5 is provided between the third tensioning roller 4 and the fourth tensioning roller 6.

[0024] Among them, the second tensioning fixed roller 2 is higher than the height of the first tensioning fixed roller 1, and the first floating roller 3 is higher than the height of the second tensioning fixed roller 2. In this way, the first tensioning fixed roller 1, the second tensioning fixed roller 2, the first floating roller 3, the third tensioning fixed roller 4, the second floating roller 5 and the fourth tensioning fixed roller 6 are distributed in a curve that first rises, then falls, then rises again, and then falls again, wherein the highest point of the curve is the position of the two floating rollers.

[0025] Specifically, the fiber bundle to be spread passes around the first tensioning roller 1, the second tensioning roller 2, the first floating roller 3, the third tensioning roller 4, the second floating roller 5 and the fourth tensioning roller 6 in sequence.

[0026] In this way, when the floating roller floats up and down, a first tension area is formed between the second tensioning fixed roller 2 and the third tensioning fixed roller 4, and a second tension area is formed between the third tensioning fixed roller 4 and the fourth tensioning fixed roller 6.

[0027] In an optional embodiment, the first floating roller 3 is connected to a first driving component 31 , the second floating roller 5 is connected to a second driving component 51 , and the first driving component 31 and the second driving component 51 include electric telescopic rods.

[0028] Preferably, the telescopic direction of the electric telescopic rod is a vertical direction.

[0029] Since the humidity of the fiber bundle in the first tension zone is greater than that in the second tension zone, the tension control in the first tension zone needs to be more uniform. In an optional embodiment, the first tensioning roller 1 and the fourth tensioning roller 6 have the same height, the second tensioning roller 2 and the third tensioning roller 4 have the same height, and the first floating roller 3 and the second floating roller 5 are configured to be able to move away from or approach the support frame in a specified direction to change the wrap angle between the fiber bundle and the first floating roller 3 and / or the second floating roller 5, thereby adjusting the tension of the fiber bundle.

[0030] When the first floating roller 3 floats up and down, the tension of the fiber bundle in the first tension area can be changed to form a yarn spreading effect, and the wrap angle of the fiber bundle on the surface of the first floating roller 3 is symmetrical on the left and right sides of the first floating roller 3. Therefore, the tension of the fiber bundle on the left side of the first floating roller 3 is the same as the tension of the fiber bundle on the right side, avoiding yarn breakage caused by high tension on one side. When the second floating roller 5 floats up and down, the fiber bundle can be further spread to make the fiber distribution along the axial direction of the second floating roller 5 more uniform.

[0031] In this way, the wrap angle between the fiber and the tensioning roller is changed by the movement of the floating roller, so that the fiber tension can be adjusted online at any time, ensuring that the fiber expansion width and expansion effect on the roller surface are consistent, and can be adjusted at any time according to the actual hairiness generation conditions, so that the fiber can be effectively expanded and the hairiness generation can be well controlled, thereby improving the product appearance quality and mechanical properties.

[0032] In a preferred embodiment, both the tensioning fixed roller and the floating roller are provided with an axially arranged insertion hole, in which a heating component 7 is provided. The heating component 7 is used to heat the second tensioning fixed roller 2 to a predetermined temperature.

[0033] Thus, a heating component 7 is provided in each tensioning fixed roller and floating roller, which can heat the fibers passing around the surfaces of the tensioning fixed roller and floating roller, keep the fibers dry, and make each fiber easy to separate from each other.

[0034] In an optional embodiment, the jack is a blind hole, the heating component 7 is a rod-shaped structure, the rod-shaped structure is inserted into the jack, and the gap between the rod-shaped structure and the jack is less than 2 mm. In this way, the tensioning fixed roller and the floating roller can be heated evenly, and the temperature measuring device is installed in the heating rod to avoid abnormal temperature display due to environmental interference when detecting the temperature outside, and can accurately feedback data and control the temperature.

[0035] Optionally, the heating temperature range of the heating component 7 is 40-200° C., with an accuracy of ±5° C.

[0036] Preferably, all the tensioning fixed rollers and floating rollers are provided with an aluminum oxide structural layer on their surfaces, the surface roughness of the aluminum oxide structural layer is 0.01-0.05, and the Rockwell hardness of the aluminum oxide structural layer is 68.

[0037] In an optional embodiment, the outer diameter of the alumina structural layer is 120 mm.

[0038] In this way, the surfaces of all the tensioning fixed rollers and floating rollers are smooth and not easily scratched, which is conducive to separating the dry limit rollers from each other under the action of tension and evenly spreading them on the surfaces of the tensioning fixed rollers and floating rollers.

[0039] In combination with the above embodiments, the utility model designs two floating rollers, and the floating of each floating roller can change the tension of the fiber. The tension is adjusted by actually observing the generation of hairiness during the yarn spreading process in production, so that the fiber can be evenly spread on the surface of the roller group and the generation of hairiness can be controlled, which can improve the appearance and mechanical properties of the product formed after subsequent infiltration.

[0040] Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. A person with ordinary knowledge in the technical field to which the present invention belongs may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be determined by the definition of the claims.

Claims

1. An online adjustment device for fiber spreading, characterized in that: The invention comprises a first tensioning roller (1), a second tensioning roller (2), a third tensioning roller (4) and a fourth tensioning roller (6) connected to a support frame, a first floating roller (3) being arranged between the second tensioning roller (2) and the third tensioning roller (4), and a second floating roller (5) being arranged between the third tensioning roller (4) and the fourth tensioning roller (6); The fiber bundle to be spread out passes around the first tensioning roller (1), the second tensioning roller (2), the first floating roller (3), the third tensioning roller (4), the second floating roller (5) and the fourth tensioning roller (6) in sequence; Wherein, the first tensioning roller (1) and the fourth tensioning roller (6) have the same height, and the second tensioning roller (2) and the third tensioning roller (4) have the same height; The first floating roller (3) and the second floating roller (5) are arranged to be able to move away from or approach the support frame in a specified direction to change the wrap angle between the fiber bundle and the first floating roller (3) and / or the second floating roller (5) to adjust the tension of the fiber bundle.

2. The online adjustment device for fiber spreading according to claim 1, characterized in that: The tensioning fixed roller and the floating roller are both provided with an axially arranged insertion hole, in which a heating component (7) is provided, and the heating component (7) is used to heat the second tensioning fixed roller (2) to a predetermined temperature.

3. The online adjustment device for fiber spreading according to claim 2, characterized in that: The jack is a blind hole.

4. The online adjustment device for fiber spreading according to claim 2, characterized in that: The heating component (7) is a rod-shaped structure, the rod-shaped structure is inserted into the insertion hole, and the gap between the rod-shaped structure and the insertion hole is less than 2 mm.

5. The online adjustment device for fiber spreading according to claim 1, characterized in that: The surfaces of all the tensioning fixed rollers and floating rollers are provided with an aluminum oxide structural layer, and the surface roughness of the aluminum oxide structural layer is 0.01-0.

05.

6. The online adjustment device for fiber spreading according to claim 5, characterized in that: The Rockwell hardness of the aluminum oxide structural layer is 68.

7. The online adjustment device for fiber spreading according to claim 5, characterized in that: The outer diameter of the alumina structural layer is 120 mm.

8. The online adjustment device for fiber spreading according to claim 1, characterized in that: The first floating roller (3) is connected to a first driving component (31), and the second floating roller (5) is connected to a second driving component (51). The first driving component (31) and the second driving component (51) comprise electric telescopic rods.

9. The online adjustment device for fiber spreading according to claim 8, characterized in that: The telescopic direction of the electric telescopic rod is the vertical direction.

10. The online adjustment device for fiber spreading according to any one of claims 1 to 9, characterized in that: The second tensioning roller (2) is higher than the first tensioning roller (1), and the first floating roller (3) is higher than the second tensioning roller (2).

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