Anti-torsion mechanism for releasing carbon fiber tows

Abstract

The utility model discloses a carbon fiber tow releasing anti-torsion mechanism, which relates to the technical field of carbon fiber cloth preparation and comprises a mounting frame, two anti-torsion clamping plates are arranged on the mounting frame, a carbon fiber tow penetrating gap is formed between the two anti-torsion clamping plates, and each anti-torsion clamping plate is provided with a horizontal plate surface; the horizontal plate face has the width direction parallel to the current horizontal wire feeding direction of the carbon fiber tows, and the length direction of the horizontal plate face is parallel to the current side-by-side direction of the multiple carbon fiber tows. Before the sheet-shaped carbon fiber tows enter the subsequent yarn spreading mechanism, the carbon fiber tows are flattened through the carbon fiber tow unwinding anti-torsion mechanism, so that torsion generated before the carbon fiber tows enter the yarn spreading mechanism is flattened and eliminated, and therefore after the multiple carbon fiber tows are spread through the yarn spreading mechanism and carbon fiber cloth is manufactured later, the carbon fiber tows are subjected to yarn unwinding, and the carbon fiber cloth is manufactured. The gaps between the adjacent carbon fiber tows in the carbon fiber cloth are smaller, zebra stripes cannot be generated due to torsion of the carbon fiber tows, and the production quality can be better improved.

Description

Technical Field

[0001] The utility model relates to the technical field of carbon fiber cloth preparation, in particular to a carbon fiber tow unwinding anti-twisting mechanism. Background Art

[0002] In the process of preparing carbon fiber cloth from carbon fiber tows, it is necessary to use a creel to unwind the carbon fiber tows from multiple carbon fiber reels, and then continue to unwind the multiple carbon fiber tows through a yarn unrolling mechanism to evenly unfold the multiple carbon fiber tows, and then carry out subsequent pressing, impregnation and other processes.

[0003] Since the preparation of carbon fiber cloth will use multiple bundles of carbon fiber tows, the unwinding creels used are mostly such as the creel proposed by the Chinese utility model "A constant tension creel for large diameter carbon fiber bobbins" with announcement number CN213622694U, which has a multi-layer unwinding structure, and each layer of unwinding mechanism has multiple unwinding drums arranged side by side; and in order to avoid unnecessary entanglement and adhesion of multiple carbon fiber tows from the creel to the yarn spreading mechanism, a tooth comb is usually set between the two, and the tooth comb is arranged horizontally in the middle of the two, and the carbon fiber tow can pass through the gap between any two adjacent teeth of the tooth comb. However, this also causes a large deviation between the unwinding direction of the carbon fiber tow unwound on the creel and the actual feeding direction when entering the yarn spreading mechanism, causing the carbon fiber tow to easily twist before entering the yarn spreading mechanism, resulting in a large gap between adjacent carbon fiber tows in the finally prepared carbon fiber cloth, forming a "zebra crossing", which requires rework and mending. 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 carbon fiber tow unwinding anti-twist mechanism, comprising a mounting frame, a pair of anti-twist clamps provided on the mounting frame, the two anti-twist clamps of the pair of anti-twist clamps being arranged opposite to each other up and down so that a carbon fiber tow passing gap is formed between the two anti-twist clamps, and any anti-twist clamp of the pair of anti-twist clamps has a horizontal plate surface that is opposite to and parallel to the other anti-twist clamp; the horizontal plate surface has a width direction parallel to the current horizontal wire feeding direction of the carbon fiber tow, and a length direction perpendicular to the current horizontal wire feeding direction of the carbon fiber tow, wherein the length direction of the horizontal plate surface is also configured to be parallel to the current side-by-side direction of multiple carbon fiber tows; the two anti-twist clamps of the pair of anti-twist clamps are configured to form a corresponding flattening of the carbon fiber tow when the carbon fiber tow passes through the carbon fiber tow passing gap along the horizontal feeding direction.

[0006] As a further solution of the present invention: an up and down adjustment component is provided on the mounting frame, and the up and down adjustment component is used to at least drive and adjust the flattening height of one of the pair of anti-twist splints.

[0007] As a further solution of the present invention: the upper and lower adjusting components include at least one pair of vertical guide rods, the two vertical guide rods of the pair of vertical guide rods are respectively connected to the positions of the two ends of the length direction of the anti-torsion splint on the mounting frame; any vertical guide rod of the pair of vertical guide rods is provided with an upper mounting slider and a lower mounting slider cooperating with the vertical guide rod; the upper and lower adjusting components also include an upper retaining rod connected to the upper mounting slider, and a lower retaining rod connected to the lower mounting slider, the two anti-torsion splints of the pair of anti-torsion splints are respectively connected to the upper retaining rod and the lower retaining rod; the outer sides of the upper mounting slider and the outer sides of the lower mounting slider are both formed with adjusting screw holes corresponding to the vertical guide rods, and the adjusting screw holes are provided with locking bolts for locking the corresponding mounting slider to the vertical guide rod.

[0008] As a further solution of the present invention: both sides of the anti-twist splint in the width direction are formed with anti-twist line guide side wings extending outward, wherein the anti-twist line guide side wings are inclined in the direction away from the other anti-twist splint, and the anti-twist line guide side wings have a guiding slope that is continuous with the edge in the width direction of the horizontal plate surface.

[0009] As a further solution of the present invention: the carbon fiber tow passed through is 8K carbon fiber tow, and the width of the horizontal plate surface is 8cm-12cm.

[0010] As a further solution of the present invention: a plurality of carbon fiber tow unwinding anti-twisting mechanisms are arranged at intervals in the horizontal feeding direction of the carbon fiber tow, and the carbon fiber tow of each carbon fiber tow unwinding anti-twisting mechanism passes through the gap at a different height, and the different passing heights are formed to gradually decrease in the direction approaching the subsequent yarn spreading mechanism.

[0011] Compared with the existing technology, the beneficial effect of this technical solution is: before the sheet-like carbon fiber tows are subjected to the subsequent yarn spreading mechanism, the carbon fiber tows are flattened by the carbon fiber tow unwinding anti-twisting mechanism, so that the twisting generated before entering the yarn spreading mechanism is flattened and eliminated, so that after the yarn spreading mechanism spreads the multiple carbon fiber tows and then makes carbon fiber cloth, the gaps between adjacent carbon fiber tows in the carbon fiber cloth are smaller, and "zebra crossings" will not be generated due to the twisting of the carbon fiber tows, which is more conducive to improving production quality.

[0012] 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

[0013] 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.

[0014] Figure 1 It is a structural stereogram of the utility model;

[0015] Figure 2 This is the structural front view of the utility model;

[0016] Figure 3 yes Figure 2 Structural cross-sectional view along the AA direction;

[0017] Figure 4 yes Figure 3 Enlarged schematic diagram of the local structure at point B in the middle.

[0018] The corresponding reference numerals in the accompanying drawings are described as follows:

[0019] Mounting frame-1, anti-twist clamps-2a, 2b, carbon fiber tow passing through gap-3, horizontal plate surface-4, vertical guide rod-5, upper mounting slider-6, lower mounting slider-7, upper retaining rod-8, lower retaining rod-9, locking screw-10, anti-tear wire guide side wings-11, guide slope-12. DETAILED DESCRIPTION

[0020] 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.

[0021] Before being used to make carbon fiber cloth, carbon fiber tows are made into long sheet structures and wound on a carbon fiber reel. When multiple carbon fiber tows are used to make carbon fiber cloth, the carbon fiber reel unwinds the sheet-like carbon fiber tows through a corresponding unwinding mechanism, such as using a creel. The width of the sheet-like carbon fiber tows usually varies due to their different sizes. The sizes of carbon fiber tows are mainly 6K, 8K, 12K, 24K, etc. 1K means that the carbon fiber tow has 1000 carbon fiber filaments.

[0022] When the multiple carbon fiber tows are subjected to the subsequent yarn spreading mechanism, the multiple carbon fiber tows are arranged side by side along the width direction of the carbon fiber tows.

[0023] See also Figure 1-4 A carbon fiber tow unwinding anti-twist mechanism comprises a mounting frame 1, on which a pair of anti-twist clamps (2a, 2b) are provided. The two anti-twist clamps of the pair are arranged opposite to each other up and down, and a gap 3 for the carbon fiber tow to pass through is formed between the two anti-twist clamps. Each anti-twist clamp of the pair has a horizontal plate surface that is opposite to and parallel to the other anti-twist clamp. Figure 4 As shown, the bottom side of the upper anti-rotation clamp 2a has a horizontal plate surface opposite to the lower anti-rotation clamp 2b, and the top side of the lower anti-rotation clamp 2b also has a horizontal plate surface opposite to the horizontal plate surface of the anti-rotation clamp 2a.

[0024] The horizontal plate surface 4 has a current horizontal wire feeding direction (such as Figure 4 The width direction is parallel to the left and right direction shown in FIG, and the length direction is perpendicular to the current horizontal feeding direction of the carbon fiber tow (as shown in FIG, Figure 2 The left and right directions shown in FIG), wherein the length direction of the horizontal plate surface 4 is also configured to be parallel to the current direction of the plurality of carbon fiber tows (such as Figure 2 parallel to the left and right directions shown).

[0025] The two anti-twist splints of the pair of anti-twist splints are configured to correspondingly flatten the carbon fiber tow when the carbon fiber tow passes through the gap along the horizontal feeding direction.

[0026] Before the sheet-like carbon fiber tows are subsequently subjected to the yarn spreading mechanism, the carbon fiber tows are flattened by the carbon fiber tow unwinding anti-twisting mechanism, so that the twisting generated before entering the yarn spreading mechanism is flattened and eliminated. As a result, after the yarn spreading mechanism spreads the multiple carbon fiber tows and thereafter makes carbon fiber cloth, the gaps between adjacent carbon fiber tows in the carbon fiber cloth are smaller, and no "zebra crossing" will be generated due to the twisting of the carbon fiber tows, which is more conducive to improving production quality.

[0027] During flattening, the plane of the sheet-like carbon fiber tow is opposite to the horizontal plate surface.

[0028] In this embodiment, the mounting frame 1 is provided with an up-and-down adjustment assembly, which is used to adjust the flattening height of at least one of the anti-twist plates. For example, the flattening height of the upper anti-twist plate 2a is adjusted, and the flattening height of the lower anti-twist plate 2b is adjusted.

[0029] In some embodiments, the vertical adjustment assembly includes at least one pair of vertical guide rods, with both vertical guide rods of any pair being connected to the mounting frame near the longitudinal ends of the anti-torsion cleat. Each vertical guide rod 5 of each pair is provided with an upper mounting slider 6 and a lower mounting slider 7 that cooperate with the vertical guide rod.

[0030] like Figure 1 As shown, one of the vertical guide rods of any pair of vertical guide rods is connected to the mounting frame 1 at a position close to the left end of the anti-torsion clamp 2a, and the other vertical guide rod is connected to the mounting frame 1 at a position close to the right end of the anti-torsion clamp 2a.

[0031] The up and down adjustment assembly also includes an upper retaining rod 8 connected to the upper mounting slider 6, and a lower retaining rod 9 connected to the lower mounting slider 7. The two anti-twist splints of the pair of anti-twist splints are respectively connected to the upper retaining rod 8 and the lower retaining rod 9.

[0032] Adjustment screw holes corresponding to the vertical guide rods are formed through the outer sides of the upper mounting slider 6 and the lower mounting slider 7. The adjustment screw holes are provided with locking bolts 10 for locking the corresponding mounting sliders to the vertical guide rod 5.

[0033] By loosening the locking bolts 10, the anti-twist cleats 2a and 2b can be adjusted up and down, thereby correspondingly adjusting the height at which the carbon fiber tow passes through the gap 3. The height at which the carbon fiber tow passes through the gap 3 can be adjusted as needed, providing better applicability. After adjustment is completed, the locking bolts 10 are tightened accordingly, passing through the adjustment screw holes and pressing against the vertical guide rods to lock the corresponding mounting sliders.

[0034] In some embodiments, a plurality of carbon fiber tow unwinding anti-twisting mechanisms are arranged at intervals in the horizontal feeding direction of the carbon fiber tow, and the carbon fiber tow of each carbon fiber tow unwinding anti-twisting mechanism passes through the gap 3 at a different height, and the different passing heights are formed to gradually decrease in the direction approaching the subsequent yarn unwinding mechanism.

[0035] Through the progressive flattening setting, the carbon fiber tow is less likely to be pulled when being flattened.

[0036] In this embodiment, both sides of the anti-twist splints (2a, 2b) in the width direction are formed with anti-twist line guide side wings 11 extending outward, wherein the anti-twist line guide side wings 11 are tilted in the direction away from the other anti-twist splint, and the anti-twist line guide side wings 11 have a guide slope 12 that is continuous with the edge in the width direction of the horizontal plate surface 4.

[0037] like Figure 4As shown, the anti-tear line guide flanks on the anti-twist splint 2a are tilted upward and outward, and the anti-tear line guide flanks on the anti-twist splint 2b are tilted upward and outward.

[0038] In some embodiments, the carbon fiber tow used is an 8K carbon fiber tow, and the width of the horizontal panel is 8 cm-12 cm.

[0039] Preferably, the width of the horizontal board is 10 cm to avoid the horizontal board being too small to hold down the material or being too large to pull the wire.

[0040] In some embodiments, the carbon fiber tow anti-twisting mechanism is arranged after the carbon fiber tow passes through the tooth comb and before entering the yarn spreading mechanism, and the direction in which the carbon fiber tow passes through the gap is the same as the direction in which the carbon fiber tow enters the yarn spreading mechanism.

[0041] 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 carbon fiber tow unwinding anti-twisting mechanism, characterized in that: The invention comprises a mounting frame, wherein a pair of anti-twist splints are provided on the mounting frame, wherein the two anti-twist splints of the pair of anti-twist splints are arranged in an upper and lower direction opposite to each other, and a gap is formed between the two anti-twist splints so that the carbon fiber tow passes through the gap, and each anti-twist splint of the pair of anti-twist splints has a horizontal plate surface opposite to and parallel to the other anti-twist splint; The horizontal plate surface has a width direction parallel to the current horizontal wire feeding direction of the carbon fiber tows, and a length direction perpendicular to the current horizontal wire feeding direction of the carbon fiber tows, wherein the length direction of the horizontal plate surface is also configured to be parallel to the current side-by-side direction of the multiple carbon fiber tows; The two anti-twist plates of the pair of anti-twist plates are configured to correspondingly flatten the carbon fiber tow when the carbon fiber tow passes through the gap along the horizontal feeding direction.

2. The carbon fiber tow unwinding anti-twisting mechanism according to claim 1, characterized in that: The mounting frame is provided with an up-and-down adjustment component, which is at least used to drive and adjust the flattening height of one of the pair of anti-twist splints.

3. The carbon fiber tow unwinding anti-twisting mechanism according to claim 2, characterized in that: The up and down adjustment assembly includes at least one pair of vertical guide rods, the two vertical guide rods of the pair of vertical guide rods are respectively connected to the mounting frame at positions close to the two ends of the anti-torsion splint in the length direction; each vertical guide rod of the pair of vertical guide rods is provided with an upper mounting slider and a lower mounting slider that cooperate with the vertical guide rod; The up and down adjustment assembly further includes an upper retaining rod connected to the upper mounting slider, and a lower retaining rod connected to the lower mounting slider, and the two anti-twist splints of the pair of anti-twist splints are respectively connected to the upper retaining rod and the lower retaining rod; The outer sides of the upper mounting slider and the lower mounting slider are both formed with adjustment screw holes corresponding to the vertical guide rods, and the adjustment screw holes are provided with locking bolts for locking the corresponding mounting sliders to the vertical guide rods.

4. The carbon fiber tow unwinding anti-twisting mechanism according to any one of claims 1 to 3, characterized in that: Both sides of the anti-twist splint in the width direction are formed with anti-twist wire guide wings extending outwards. The anti-tear line guide wing is tilted in a direction away from the other anti-twist splint, and has a guiding slope that is continuous with the edge in the width direction of the horizontal plate surface.

5. The carbon fiber tow unwinding anti-twisting mechanism according to any one of claims 1 to 3, characterized in that: The carbon fiber tow passed through is 8K carbon fiber tow, and the width of the horizontal plate surface is 8cm-12cm.

6. The carbon fiber tow unwinding anti-twisting mechanism according to any one of claims 1 to 3, characterized in that: A plurality of carbon fiber tow unwinding anti-twisting mechanisms are arranged at intervals in the horizontal feeding direction of the carbon fiber tow, and the carbon fiber tow of each carbon fiber tow unwinding anti-twisting mechanism passes through the gap at a different height, and the different passing heights are formed to gradually decrease in the direction approaching the subsequent yarn spreading mechanism.

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