Crease reduction mechanism used in process of preparing carbon fiber cloth from carbon fiber tows

Abstract

The utility model discloses a wrinkle reduction mechanism used in the process of making carbon fiber tows into carbon fiber cloth, and relates to the technical field of carbon fiber cloth preparation, the wrinkle reduction mechanism comprises a support frame, a wrinkle reduction column is arranged on the support frame, and the wrinkle reduction column is provided with a first wrinkle reduction plane, a wrinkle reduction arc surface and a second wrinkle reduction plane; the wrinkle reduction cambered surface is used for jacking and tensioning the horizontally fed carbon fiber tows in the second direction and enabling the carbon fiber tows to be close to the first wrinkle reduction plane and the second wrinkle reduction plane for feeding movement, and on one hand, the first wrinkle reduction plane and the second wrinkle reduction plane can conduct plane guiding on the sheet-shaped carbon fiber tows; on the other hand, after the carbon fiber tows are jacked and tensioned by the wrinkle reduction cambered surfaces, plane guidance of the carbon fiber tows at the first wrinkle reduction plane and plane guidance of the carbon fiber tows at the second wrinkle reduction plane can be isolated from each other, so that torsion of the carbon fiber tows finally entering the yarn spreading mechanism can be effectively eliminated; and when the carbon fiber cloth is subsequently prepared, the carbon fiber cloth is not easy to wrinkle.

Description

Technical Field

[0001] The utility model relates to the technical field of carbon fiber cloth preparation, in particular to a wrinkle reduction mechanism used in a process of making carbon fiber cloth from carbon fiber bundles. Background Art

[0002] In the process of preparing carbon fiber cloth, a creel is first used to unwind the filaments from multiple carbon fiber reels. These tows are then passed through a yarn spreading mechanism to ensure that they are evenly spread out for subsequent pressing and impregnation processes. Because this process involves multiple bundles of carbon fiber tows, large creels with a multi-layer unwinding structure and multiple side-by-side reels on each layer, such as those shown in the Chinese utility model with announcement number CN213622694U, "A constant tension creel for large-diameter carbon fiber bobbins," are often used.

[0003] To prevent entanglement and adhesion between carbon fiber tows during transmission from the creel to the unwinding mechanism, a horizontal comb is usually placed between the two. This comb allows the carbon fiber tows to pass through the gaps between any two adjacent teeth. However, this approach also brings a problem: there is a large angular deviation between the original unwinding direction of the carbon fiber tows unwound from the creel and the actual feeding direction when they enter the unwinding mechanism. This deviation often causes the carbon fiber tows to twist before entering the unwinding mechanism, which in turn affects the quality of the final carbon fiber cloth and makes it prone to wrinkling. Utility Model Content

[0004] In order to overcome the above-mentioned shortcomings, the present invention aims to provide a technical solution that can solve the above-mentioned problems.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a wrinkle reduction mechanism for a process of making carbon fiber cloth from carbon fiber tows, comprising a support frame, on which a wrinkle reduction column is arranged along a first direction perpendicular to the horizontal feeding direction of the carbon fiber tows, the wrinkle reduction column having a first wrinkle reduction plane, a wrinkle reduction arc surface with an arc less than 180°, and a second wrinkle reduction plane that are successively arranged along the horizontal feeding direction of the carbon fiber tows; the wrinkle reduction arc surface is convexly arranged along a second direction perpendicular to the horizontal feeding direction of the carbon fiber tows, and the first plane where the first wrinkle reduction plane is located and the second plane where the second wrinkle reduction plane is located are respectively arranged tangent to the two sides of the wrinkle reduction arc surface; the first direction and the second direction are arranged perpendicular to each other; the wrinkle reduction arc surface is configured to perform top pressure tensioning on the horizontally fed carbon fiber tows in the second direction, and the carbon fiber tows are fed and moved close to the first wrinkle reduction plane and the second wrinkle reduction plane.

[0006] As a further solution of the present invention: both ends of the wrinkle-reducing column are connected with an adjusting shaft, and a shaft seat with an adjustable supporting diameter that cooperates with the adjusting shaft is installed on the support frame.

[0007] As a further solution of the present invention: the supporting aperture adjustable shaft seat includes a seat body connected to the support frame, and a pair of parallel adjusting clamping columns are connected to the seat body, one end of the adjusting clamping column is connected to the seat body, and the other end of the adjusting clamping column is extended along the axial direction perpendicular to the wrinkle reduction column; the middle sections of the two adjusting clamping columns of the pair of adjusting clamping columns are spaced apart from each other to form aperture adjustable shaft holes, and the adjusting shaft is correspondingly passed through the aperture adjustable shaft holes; the other end of one of the adjusting clamping columns of the pair of adjusting clamping columns is formed with a connecting hole, and the other end of the other adjusting clamping column of the pair of adjusting clamping columns is formed with a connecting screw hole corresponding to the connecting hole, and is provided with an aperture adjustment bolt that cooperates with the connecting hole and the connecting screw hole.

[0008] As a further solution of the present invention: the curvature of the wrinkle-reducing curved surface is 80°-100°.

[0009] Compared with the prior art, the beneficial effects of the present technical solution are as follows: after the wrinkle-reducing arc surface presses and tensions the carbon fiber tow, on the one hand, the first wrinkle-reducing plane and the second wrinkle-reducing plane can perform planar guidance on the sheet-like carbon fiber tow, so that the carbon fiber tow can be in a planar state before reaching the wrinkle-reducing arc surface and when leaving the wrinkle-reducing arc surface; on the other hand, after the wrinkle-reducing arc surface presses and tensions the carbon fiber tow, the planar guidance of the carbon fiber tow at the first wrinkle-reducing plane and the planar guidance at the second wrinkle-reducing plane can be isolated from each other, that is, the torsion generated when the carbon fiber tow is unwound will be planarly guided by the first wrinkle-reducing plane, and then tensioned by the wrinkle-reducing arc surface to eliminate its torsional force, and finally guided out to maintain the planar state by the second wrinkle-reducing plane; so that the torsion of the carbon fiber tow that finally enters the yarn-unwinding mechanism can be effectively eliminated, and when the carbon fiber cloth is subsequently prepared, the carbon fiber cloth is not easy to wrinkle.

[0010] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0012] Figure 1 It is a structural stereogram of the utility model;

[0013] Figure 2It is a schematic diagram of a first plane where the first wrinkle-reducing plane is located and a second plane where the second wrinkle-reducing plane is located in the present invention;

[0014] Figure 3 is another structural perspective view of the present invention, showing a front tensioning roller and a rear tensioning roller;

[0015] Figure 4 It is a schematic diagram of feeding carbon fiber tow in the utility model.

[0016] The corresponding reference numerals in the accompanying drawings are described as follows:

[0017] Carbon fiber tow-100,

[0018] Support frame-1,

[0019] Wrinkle reduction column-2, first wrinkle reduction plane-201, wrinkle reduction arc surface-202, second wrinkle reduction plane-203,

[0020] Adjustment shaft-3,

[0021] Supporting diameter adjustable shaft seat-4, seat body-401, adjusting clamping columns-402a, 402b, aperture adjustable shaft hole-403, aperture adjusting bolt-404,

[0022] Front tension roller-5,

[0023] Rear tension roller-6. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] Before the carbon fiber tows are processed into carbon fiber cloth, these tows are first processed into long sheet structures and then wound on a carbon fiber winding drum. When multiple bundles of such carbon fiber tows are needed to prepare carbon fiber cloth, a special unwinding device, such as a creel, is used to gradually unwind these sheet-like carbon fiber tows from the carbon fiber winding drum. It is worth noting that the width of the sheet-like carbon fiber tows varies according to their specifications. Common sizes include 6K, 8K, 12K, 24K, etc., where 1K represents that the tow contains 1000 carbon fiber filaments. In the subsequent yarn spreading process, multiple bundles of carbon fiber tows will be arranged side by side along their respective width directions to be sent to the yarn spreading mechanism or yarn spreading equipment for yarn spreading, so as to facilitate further processing, such as pressing after yarn spreading.

[0026] After the carbon fiber tow is unwound (such as the carbon fiber winding drum on the creel) to the yarn unwinding mechanism, the carbon fiber tow has a horizontal unwinding section.

[0027] See also Figure 1-4 A wrinkle reduction mechanism for a process of making carbon fiber cloth from carbon fiber tows includes a support frame 1, on which a wrinkle reduction column 2 is arranged along a first direction perpendicular to the horizontal feeding direction of the carbon fiber tows 100. The wrinkle reduction column 2 has a first wrinkle reduction plane 201, a wrinkle reduction arc surface 202, and a second wrinkle reduction plane 203 which are sequentially arranged along the horizontal feeding direction of the carbon fiber tows 100.

[0028] The wrinkle reducing arc surface 202 is convexly arranged along a second direction perpendicular to the horizontal feeding direction of the carbon fiber tow 100, and the first plane where the first wrinkle reducing plane 201 is located and the second plane where the second wrinkle reducing plane 103 is located are respectively arranged tangent to the two sides of the wrinkle reducing arc surface 202.

[0029] like Figure 1 、 4 As shown, the first direction and the second direction are arranged perpendicular to each other.

[0030] The wrinkle-reducing curved surface 202 is configured to apply pressure and tension to the horizontally fed carbon fiber tow 100 in a second direction, and causes the carbon fiber tow 100 to be fed and moved close to the first wrinkle-reducing plane 201 and the second wrinkle-reducing plane 103. The carbon fiber tow 100 is pressed and tensioned by the wrinkle-reducing curved surface 202, and after the carbon fiber tow 100 is pressed by the raised wrinkle-reducing curved surface 202, the tow segments of the carbon fiber tow 100 close to the wrinkle-reducing curved surface 202 can be forced to move close to the first wrinkle-reducing plane 201 and the second wrinkle-reducing plane 203.

[0031] The curvature of the wrinkle-reducing curved surface 202 is less than 180°, that is, the first plane and the second plane can form an angle that is greater than 0° and less than 180°.

[0032] After the wrinkle reducing curved surface 202 presses and tensions the carbon fiber tow 100, on the one hand, the first wrinkle reducing plane 201 and the second wrinkle reducing plane 203 can perform planar guidance on the sheet-like carbon fiber tow 100, so that the carbon fiber tow 100 can be in a planar state before reaching the wrinkle reducing curved surface 202 and when leaving the wrinkle reducing curved surface 202; on the other hand, after the wrinkle reducing curved surface 202 presses and tensions the carbon fiber tow 100, the planar guidance of the carbon fiber tow 100 at the first wrinkle reducing plane 201 and the planar guidance at the second wrinkle reducing plane 203 can be isolated from each other, that is, the torsion generated when the carbon fiber tow 100 is unwound will be planarly guided by the first wrinkle reducing plane 201, and then tensioned by the wrinkle reducing curved surface 202 to eliminate its torsional force, and finally guided out of the maintained planar state by the second wrinkle reducing plane 203; so that the torsion of the carbon fiber tow 100 that finally enters the yarn unwinding mechanism can be effectively eliminated, and when the carbon fiber cloth is subsequently prepared, the carbon fiber cloth is not easy to wrinkle.

[0033] Preferably, the curvature of the wrinkle-reducing curved surface 202 is 80°-100°.

[0034] In this embodiment, both ends of the wrinkle-reducing column 2 are connected to an adjustable shaft 3 , and a shaft seat 4 with an adjustable supporting diameter that cooperates with the adjustable shaft 3 is installed on the support frame 1 .

[0035] In this embodiment, the support caliber adjustable shaft seat 4 includes a seat body 401 connected to the support frame 1. A pair of mutually parallel adjustment clamping columns (402a, 402b) are connected to the seat body 401. One end of the adjustment clamping columns (402a, 402b) is connected to the seat body, and the other end of the adjustment clamping columns (402a, 402b) is extended along an axial direction perpendicular to the wrinkle reduction column 2 (i.e., perpendicular to the first direction). The middle sections of the two adjustment clamping columns of the pair of adjustment clamping columns are spaced apart to form adjustable diameter shaft holes 403, and the adjustment shaft 3 is correspondingly provided through the adjustable diameter shaft holes 403. The other end of one of the adjustment clamping columns 402a of the pair of adjustment clamping columns is formed with a connecting hole, and the other end of the other adjustment clamping column 402b of the pair of adjustment clamping columns is formed with a connecting screw hole corresponding to the connecting hole.

[0036] A diameter adjustment bolt 404 is provided, which mates with the connecting hole and the connecting screw hole. Tightening the diameter adjustment bolt 404 clamps the two adjustment clamping columns relative to each other, reducing the diameter of the formed diameter-adjustable rotating shaft hole 403, thereby clamping the adjustment rotating shaft 3. To adjust the angle of the first wrinkle-reducing plane 201 and the second wrinkle-reducing plane 203 of the wrinkle-reducing column 2, the diameter adjustment bolt 404 can be loosened and the wrinkle-reducing column 2 can be rotated to the corresponding angle to adjust the direction.

[0037] That is, the adjustment clamping column actually has a certain elastic bending performance.

[0038] like Figure 3 、 4 As shown, in this embodiment, a front tensioning roller 5 and a rear tensioning roller 6 are further provided. The front tensioning roller 5, the rear tensioning roller 6 and the wrinkle reduction column 2 cooperate to achieve better tensioning.

[0039] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A wrinkle reduction mechanism for a process of making carbon fiber cloth from carbon fiber tow, characterized in that: The invention comprises a support frame, wherein the support frame is provided with a wrinkle-reducing column arranged along a first direction perpendicular to the horizontal feeding direction of the carbon fiber tow, and the wrinkle-reducing column has a first wrinkle-reducing plane, a wrinkle-reducing arc surface with an arc less than 180 degrees, and a second wrinkle-reducing plane which are sequentially arranged along the horizontal feeding direction of the carbon fiber tow; The wrinkle-reducing curved surface is convexly arranged along a second direction perpendicular to the horizontal feeding direction of the carbon fiber tow, and a first plane where the first wrinkle-reducing plane is located and a second plane where the second wrinkle-reducing plane is located are respectively arranged tangent to two sides of the wrinkle-reducing curved surface; The first direction and the second direction are arranged perpendicular to each other; The wrinkle-reducing arc surface is used to press and tension the horizontally fed carbon fiber tow in the second direction, and enables the carbon fiber tow to move close to the first wrinkle-reducing plane and the second wrinkle-reducing plane for feeding.

2. The wrinkle reduction mechanism for the process of making carbon fiber cloth from carbon fiber tow according to claim 1, characterized in that: Both ends of the wrinkle reduction column are connected with an adjusting shaft, and a supporting shaft seat with an adjustable supporting diameter matched with the adjusting shaft is installed on the supporting frame.

3. The wrinkle reduction mechanism for the process of making carbon fiber cloth from carbon fiber tow according to claim 2, characterized in that: The support diameter adjustable rotating shaft seat includes a seat body connected to the support frame, a pair of mutually parallel adjustment clamping columns connected to the seat body, one end of the adjustment clamping column is connected to the seat body, and the other end of the adjustment clamping column is extended along the axis perpendicular to the wrinkle reduction column; The middle sections of the two adjusting clamping columns of the pair of adjusting clamping columns are spaced apart from each other to form rotating shaft holes with adjustable apertures, and the adjusting rotating shafts are correspondingly provided on the rotating shaft holes with adjustable apertures; The other end of one of the pair of adjusting clamps is formed with a connecting hole, and the other end of the other adjusting clamp is formed with a connecting screw hole corresponding to the connecting hole, and is equipped with an aperture adjustment bolt that cooperates with the connecting hole and the connecting screw hole.

4. The wrinkle reduction mechanism for a process of manufacturing carbon fiber cloth from carbon fiber tow according to any one of claims 1 to 3, characterized in that: The curvature of the wrinkle-reducing curved surface is 80°-100°.

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