Carbon fiber impregnation apparatus

Abstract

The application discloses carbon fiber impregnation equipment and relates to the technical field of carbon fiber prepreg preparation. The carbon fiber impregnation equipment comprises a yarn rack, a carbon fiber anti-twist and wrinkle reduction mechanism, a yarn spreading mechanism and an impregnation and pressing mechanism arranged in sequence. The carbon fiber anti-twist and wrinkle reduction mechanism is provided with an inlet horizontal shaping part for horizontally feeding carbon fiber tows into the carbon fiber anti-twist and wrinkle reduction mechanism, an outlet horizontal shaping part for horizontally feeding the carbon fiber tows out of the carbon fiber anti-twist and wrinkle reduction mechanism and a vertical shaping part for vertically pressing and tensioning the carbon fiber tows between the inlet horizontal shaping part and the outlet horizontal shaping part. The carbon fiber tows are horizontally shaped by the carbon fiber anti-twist and wrinkle reduction mechanism, and the carbon fiber tows are vertically pressed and tensioned in the process of horizontal shaping, so that the twist generated by the carbon fiber tows unwound from different unwinding positions can be better weakened and eliminated when the carbon fiber tows reach the same horizontal position.

Description

Technical Field

[0001] This invention relates to the field of carbon fiber prepreg preparation technology, and in particular to a carbon fiber impregnation device. Background Technology

[0002] In the process of preparing carbon fiber prepreg from carbon fiber tow, it requires steps such as yarn feeding, yarn spreading, impregnation and pressing, and some also include processes such as film coating, edge trimming, and winding. During yarn spreading, it mainly uses a device such as the "carbon fiber vibration spreading device" proposed in Chinese Utility Model No. CN217628938U to vibrate and spread multiple bundles of strip-shaped or sheet-shaped carbon fiber tow in the up, down, left, and right directions, so that the multiple bundles of carbon fiber tow become thin and uniformly distributed yarn sheets.

[0003] After the yarn is unfurled, it is usually impregnated and pressed using a resin pressing mechanism for high impregnation quality of carbon fiber fabric, as proposed in Chinese Utility Model No. CN217944049U. That is, when the yarn passes through two heated pressing rollers set above and below, the release paper brushed with resin is simultaneously put into the two heated pressing rollers and heated and pressed. By heating and melting the resin during the pressing process, the impregnation and pressing operation of impregnating the carbon fiber with resin is formed, thereby obtaining carbon fiber prepreg fabric.

[0004] Before unwinding, multiple carbon fiber bundles are typically unwound using a constant tension yarn frame for large-diameter carbon fiber bobbins, as proposed in Chinese Utility Model No. CN213622694U. The yarn frame has a multi-layer unwinding structure arranged vertically, with each unwinding structure having at least two rows of bobbins arranged side by side, and each row of bobbins having multiple bobbins arranged front and back. The bobbins are used to install the carbon fiber bundles to be unwound.

[0005] Before the yarn unfolding process, the multiple unwound carbon fiber bundles need to be converged to the same horizontal plane. This results in varying degrees of twisting of the carbon fiber bundles unwound from different positions of the carbon fiber bundle rolls when they reach the aforementioned horizontal position. Although the carbon fiber bundles are unfolded by the yarn unfolding device before reaching the pressing position of the impregnation and pressing equipment from the yarn frame, most of the aforementioned twisting will still remain. This twisting will cause gaps between adjacent carbon fiber bundles, leaving obvious gaps in the carbon fiber prepreg after subsequent impregnation and pressing. Furthermore, when the degree of twisting is severe, it will also cause the carbon fiber prepreg formed by subsequent impregnation and pressing to wrinkle, resulting in low product quality and poor usability. Summary of the Invention

[0006] To overcome the shortcomings mentioned above, the present invention aims to provide a technical solution that can solve the above problems.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a carbon fiber impregnation device, comprising a yarn rack, a yarn spreading mechanism, and an impregnation and pressing mechanism arranged sequentially; the yarn rack is used to unwind sheet-like or strip-like carbon fiber bundles wound on a roll, and forms a feeding direction from the yarn rack to the yarn spreading mechanism, and then from the yarn spreading mechanism to the impregnation and pressing mechanism; the yarn spreading mechanism is used to spread the carbon fiber bundles unwound from the yarn rack; the impregnation and pressing mechanism is used to press and impregnate the yarn obtained by the yarn spreading mechanism to obtain carbon fiber prepreg; a carbon fiber anti-twist and wrinkle-reducing mechanism is provided between the yarn rack and the yarn spreading mechanism, and in the feeding direction, the carbon fiber anti-twist and wrinkle-reducing mechanism has an inlet horizontal shaping section for horizontally feeding the carbon fiber bundles into the carbon fiber anti-twist and wrinkle-reducing mechanism, an outlet horizontal shaping section for horizontally feeding the carbon fiber bundles out of the carbon fiber anti-twist and wrinkle-reducing mechanism, and a vertical shaping section for pressing and tensioning the carbon fiber bundles in the vertical direction between the inlet horizontal shaping section and the outlet horizontal shaping section.

[0008] As a further aspect of the present invention: the inlet horizontal shaping part includes a first mounting frame, on which a first upper horizontal pressure plate and a first lower horizontal pressure plate corresponding to the first upper horizontal pressure plate are provided, and a first horizontal passing gap suitable for the carbon fiber bundle to pass through is provided between the first upper horizontal pressure plate and the first lower horizontal pressure plate; when the carbon fiber bundle passes through the first horizontal passing gap, the first upper horizontal pressure plate and the first lower horizontal pressure plate together flatten the carbon fiber bundle along the thickness direction of the carbon fiber bundle.

[0009] As a further aspect of the present invention: the outlet horizontal shaping part includes a second mounting frame, on which a second upper horizontal pressure plate and a second lower horizontal pressure plate corresponding to the second upper horizontal pressure plate are provided, and a second horizontal passing gap suitable for the carbon fiber bundle to pass through is provided between the second upper horizontal pressure plate and the second lower horizontal pressure plate; when the carbon fiber bundle passes through the second horizontal passing gap, the second upper horizontal pressure plate and the second lower horizontal pressure plate together flatten the carbon fiber bundle along the thickness direction of the carbon fiber bundle.

[0010] As a further aspect of the present invention: the vertical shaping part includes a support frame, on which a tensioning column is provided along the width direction of the carbon fiber prepreg; in the feeding direction, the tensioning column is located between the first horizontal through gap and the second horizontal through gap; the tensioning column has a top pressing part that protrudes in the vertical direction; the top pressing part forms a height difference with both the first horizontal through gap and the second horizontal through gap, and the height difference values ​​are in the same direction.

[0011] As a further aspect of the present invention: the top pressing part has a set of carbon fiber shaping surfaces, the set of carbon fiber shaping surfaces including an inclined entry surface, an inclined delivery surface, and an arc-shaped continuous surface for connecting the inclined entry surface and the inclined delivery surface. The inclined entry surface is inclined toward the direction of the first horizontal passing gap, and the inclined delivery surface is inclined toward the direction of the second horizontal passing gap. After the carbon fiber bundle passes through the first horizontal passing gap, it sequentially reaches the inclined entry surface, the arc-shaped continuous surface, and the inclined delivery surface, and then passes through the second horizontal passing gap.

[0012] As a further aspect of the present invention: the top pressing part is convex upward, and both the first horizontal through gap and the second horizontal through gap are lower than the top pressing part; a first guide wing plate is formed on one side of the first upper horizontal pressing plate corresponding to the through outlet of the first horizontal through gap, and the first guide wing plate is inclined toward the top pressing part; a second guide wing plate is formed on one side of the second upper horizontal pressing plate corresponding to the through inlet of the second horizontal through gap, and the second guide wing plate is inclined toward the top pressing part.

[0013] As a further aspect of the present invention: when the carbon fiber bundle is pressed and tensioned upward on the arc-shaped continuous surface, the first guide wing plate has a first guide slope corresponding to the carbon fiber bundle, and the second guide wing plate has a second guide slope corresponding to the carbon fiber bundle; the first guide slope is located below the surface where the inclined entry surface is located; the second guide slope is located below the surface where the inclined delivery surface is located.

[0014] As a further aspect of the present invention: the first mounting bracket is provided with a first height adjustment component for independently adjusting the height of the first upper horizontal pressure plate and the first lower horizontal pressure plate.

[0015] As a further aspect of the present invention: the second mounting bracket is provided with a second height adjustment component for independently adjusting the height of the second upper horizontal pressure plate and the second lower horizontal pressure plate.

[0016] As a further aspect of the present invention: both ends of the tensioning column are connected to a rotating shaft, and the support frame is provided with an angle adjustment component for adjusting the rotation angle of the rotating shaft; the outer circumferential surface of the tensioning column body is composed of multiple sets of carbon fiber shaping surfaces connected in sequence; when the arc-shaped continuous surfaces of different sets of carbon fiber shaping surfaces are directly above, the top pressure inclination of different inclined inlet surfaces on the carbon fiber bundle is different, and the top pressure inclination of different inclined outlet surfaces on the carbon fiber bundle is different.

[0017] Compared with the prior art, the beneficial effects of this technical solution are as follows: the carbon fiber anti-twist and wrinkle-reducing mechanism performs horizontal shaping of the carbon fiber bundle, and during the horizontal shaping process, the carbon fiber bundle is vertically pressed and tensioned, so that the twist generated when the carbon fiber bundles unwound from different unwinding positions reach the same horizontal position can be effectively weakened and eliminated. As a result, the carbon fiber prepreg fabric prepared in the end is less likely to leave obvious gaps due to the twisting of the carbon fiber bundle, and the wrinkling of the carbon fiber prepreg fabric caused by the twisting of the carbon fiber bundle is reduced, effectively improving the quality and usability of the product.

[0018] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of the present invention;

[0021] Figure 2 This is a structural cross-sectional view of the carbon fiber anti-torsion and wrinkle-reducing mechanism in this invention;

[0022] Figure 3 This is another structural cross-sectional view of the carbon fiber anti-torsion and wrinkle reduction mechanism in this invention, which shows the surface E1 where the oblique entry surface is located and the surface F1 where the oblique delivery surface is located in the dashed line.

[0023] Figure 4 This is a cross-sectional view of the structure of the first group of carbon fiber shaping surfaces when the arc-shaped continuous surface is rotated to the top.

[0024] Figure 5 This is a cross-sectional view of the structure of the second group of carbon fiber shaping surfaces when the arc-shaped continuous surface is rotated to the top.

[0025] Figure 6 This is a cross-sectional view of the structure of the first upper horizontal pressure plate and the first lower horizontal pressure plate in this invention;

[0026] Figure 7 This is a cross-sectional view of the structure of the second upper horizontal pressure plate and the second lower horizontal pressure plate in this invention.

[0027] The corresponding labels in the attached diagram are explained as follows:

[0028] Yarn frame-1, carbon fiber anti-twist and wrinkle-reducing mechanism-2, yarn spreading mechanism-3, impregnation and pressing mechanism-4, comb-5.

[0029] Entrance horizontal shaping section-21,

[0030] First mounting bracket - 211, first upper horizontal pressure plate - 212, first lower horizontal pressure plate - 213, first horizontal through gap - 214, first guide wing plate - 215, first guide ramp - 2151, first vertical guide rod - 216, first adjusting sliders - 217a, 217b, adjusting bolts - 218a, 218b

[0031] Export horizontal shaping section-22,

[0032] Second mounting bracket-221, second upper horizontal pressure plate-222, second lower horizontal pressure plate-223, second horizontal through gap-224, second guide wing plate-225, second guide ramp-2251, second vertical guide rod-226, second adjusting sliders-227a, 227b, adjusting bolts-228a, 228b

[0033] Vertical Shaping Section -23

[0034] Support frame-231, tensioning column-232, carbon fiber shaping surface-233a, 233b, inclined entry surface-2331a, 2331b, arc continuous surface-2332a, 2332b, inclined delivery surface-2333a, 2333b, elastic clamping plate-234a, 234b, clamping adjustment bolt-235. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Please see Figure 1-7 In this embodiment, a carbon fiber impregnation device includes a yarn frame 1, a carbon fiber anti-twist and wrinkle-reducing mechanism 2, a yarn spreading mechanism 3, and an impregnation and pressing mechanism 4 arranged in sequence.

[0037] The yarn frame 1 is used to unwind sheet-like or strip-like carbon fiber bundles wound on a spool and forms the feeding direction from the yarn frame 1 to the carbon fiber anti-twist and wrinkle-reducing mechanism 2, then from the carbon fiber anti-twist and wrinkle-reducing mechanism 2 to the yarn spreading mechanism 3, and then from the yarn spreading mechanism 3 to the impregnation and pressing mechanism 4.

[0038] In the feeding direction, the carbon fiber anti-twist and wrinkle reduction mechanism 2 has an inlet horizontal shaping section 21 that feeds the carbon fiber bundle horizontally into the carbon fiber anti-twist and wrinkle reduction mechanism, an outlet horizontal shaping section 22 that feeds the carbon fiber bundle horizontally out of the carbon fiber anti-twist and wrinkle reduction mechanism, and a vertical shaping section 23 that presses and tensions the carbon fiber bundle vertically between the inlet horizontal shaping section 21 and the outlet horizontal shaping section 22.

[0039] When the carbon fiber tow is horizontally fed into the inlet horizontal shaping section 21 of the carbon fiber anti-twist and wrinkle-reducing mechanism, the thickness direction of the carbon fiber tow is vertical. When the carbon fiber tow is horizontally fed out of the outlet horizontal shaping section 22 of the carbon fiber anti-twist and wrinkle-reducing mechanism, the thickness direction of the carbon fiber tow is vertical, that is, the sheet surface or the strip surface of the carbon fiber tow is horizontal. The vertical shaping section 23 is used to press and tension the carbon fiber tow along its thickness direction.

[0040] The yarn spreading mechanism 3 is used to spread the carbon fiber bundles that are unwound from the yarn frame 1 and shaped by the carbon fiber anti-twist and wrinkle reduction mechanism 2 to obtain yarn.

[0041] The impregnation and pressing mechanism 4 is used to press and impregnate the yarn obtained by the yarn spreading mechanism 3 to obtain carbon fiber prepreg.

[0042] The carbon fiber anti-twist and wrinkle-reducing mechanism 2 performs horizontal shaping of the carbon fiber bundles, and vertical shaping during the horizontal shaping process. This effectively weakens and eliminates the twisting caused by multiple carbon fiber bundles unwound from different unwinding positions when they reach the same horizontal position. As a result, the carbon fiber prepreg fabric produced is less likely to leave obvious gaps due to carbon fiber bundle twisting, and the wrinkling of the carbon fiber prepreg fabric caused by carbon fiber bundle twisting is reduced, effectively improving product quality and usability.

[0043] In this embodiment, please refer to Figure 2 , 6 The inlet horizontal shaping section 21 includes a first mounting frame 211, on which a first upper horizontal pressure plate 212 and a first lower horizontal pressure plate 213 corresponding to the first upper horizontal pressure plate 212 are provided. There is a first horizontal passing gap 214 between the first upper horizontal pressure plate 212 and the first lower horizontal pressure plate 213, which is suitable for the carbon fiber bundle to pass through. When the carbon fiber bundle passes through the first horizontal passing gap 214, the first upper horizontal pressure plate 212 and the first lower horizontal pressure plate 213 together flatten the carbon fiber bundle along the thickness direction of the carbon fiber bundle.

[0044] Please see Figure 2 , 7The outlet horizontal shaping section 22 includes a second mounting frame 221. The second mounting frame 221 is provided with a second upper horizontal pressure plate 222 and a second lower horizontal pressure plate 223 corresponding to the second upper horizontal pressure plate 222. There is a second horizontal passing gap 224 between the second upper horizontal pressure plate 222 and the second lower horizontal pressure plate 223, which is suitable for the carbon fiber bundle to pass through. When the carbon fiber bundle passes through the second horizontal passing gap 224, the second upper horizontal pressure plate 222 and the second lower horizontal pressure plate 223 together flatten the carbon fiber bundle along the thickness direction of the carbon fiber bundle.

[0045] Please see Figure 2 The vertical shaping section 23 includes a support frame, on which a tensioning column 232 is provided along the width direction of the carbon fiber prepreg. In the feeding direction, the tensioning column 232 is located between the first horizontal through gap 241 and the second horizontal through gap 224. The tensioning column 232 has a pressing part that protrudes in the vertical direction. The pressing part forms a height difference with both the first horizontal through gap 214 and the second horizontal through gap 224, and the height difference values ​​are in the same direction.

[0046] The same direction of height difference means that the top pressure part is simultaneously higher than the first horizontal through gap 214 and the second horizontal through gap 224, or that the top pressure part is simultaneously lower than the first horizontal through gap 241 and the second horizontal through gap 224.

[0047] In some embodiments, a toothed comb 5 may be provided between the carbon fiber anti-twist and wrinkle-reducing mechanism 2 and the yarn frame 1. The length direction of the toothed comb 5 is the same as the width direction of the carbon fiber prepreg fabric. Figure 1 As shown, the width of the carbon fiber prepreg is in the front-to-back direction in the view. The comb 5 has multiple through-tooth gaps spaced apart along the length of the comb to prevent multiple carbon fiber bundles from tangling with each other.

[0048] In some embodiments, a toothed comb may also be provided between the carbon fiber anti-torsion and wrinkle-reducing mechanism and the yarn spreading mechanism.

[0049] In this embodiment, please refer to Figure 2 , 4 The top pressing part has a set of carbon fiber shaping surfaces 223a, which includes an inclined entry surface 2331a, an inclined delivery surface 2333a, and an arc-shaped continuous surface 2332a for connecting the inclined entry surface 2331a and the inclined delivery surface 2333a. The inclined entry surface 2331a is inclined toward the direction of the first horizontal passing gap 214, and the inclined delivery surface 2333a is inclined toward the direction of the second horizontal passing gap 224. After the carbon fiber bundle passes through the first horizontal passing gap 214, it sequentially reaches the inclined entry surface 2331a, the arc-shaped continuous surface 2332a, and the inclined delivery surface 2333a, and then passes through the second horizontal passing gap 224.

[0050] When the yarn frame 1 is used to unwind multiple rolls of carbon fiber filaments, especially when the multiple rolls of carbon fiber filaments have different unwinding positions in the horizontal, vertical and longitudinal directions, the multiple carbon fiber filaments obtained after unwinding are first flattened at the same horizontal position by the first upper horizontal pressure plate 212 and the first lower horizontal pressure plate 213; then the carbon fiber filaments are vertically pressed and tensioned by the arc-shaped continuous surface 2332a of the top pressure part, and the carbon fiber filaments are flattened again by the second upper horizontal pressure plate 222 and the second lower horizontal pressure plate 223, so that the carbon fiber filaments can be pressed and tensioned into an inverted V-shape (or V-shape).

[0051] The front and rear sections of the inverted V-shaped (or V-shaped) carbon fiber bundle are resisted by the pressure applied by the arc-shaped continuous surface of the top pressing part to resist the torsional force remaining after the carbon fiber bundle passes through the first horizontal passing gap.

[0052] Figure 2 The top pressure section shown is higher than the first horizontal through gap and the second horizontal through gap, and the carbon fiber bundle is correspondingly pressed and tensioned into an inverted V shape.

[0053] The first horizontal through gap 214 formed by the first upper horizontal pressure plate 212 and the first lower horizontal pressure plate 213, and the second horizontal through gap formed by the second upper horizontal pressure plate 222 and the second lower horizontal pressure plate 223, can provide sufficient flattening distance for the carbon fiber to be flattened; the flattening distance of the first horizontal through gap 214 is, for example, 10cm, and the flattening distance of the second horizontal through gap 224 is, for example, 10cm, thereby ensuring a good flattening process.

[0054] like Figure 6 , 7 As shown, the flattening distance is the distance from right to left horizontally passing through the first horizontal passing gap 214, and the distance from right to left horizontally passing through the second horizontal passing gap 224.

[0055] In this embodiment, the top pressing part is designed to protrude upwards, and both the first horizontal through gap 214 and the second horizontal through gap 224 are lower than the top pressing part.

[0056] A first guide wing plate 215 is formed on the side of the first upper horizontal pressure plate 212 corresponding to the outlet of the first horizontal through gap 214. The first guide wing plate 215 is inclined toward the top pressure part. A second guide wing plate 225 is formed on the side of the second upper horizontal pressure plate 222 corresponding to the inlet of the second horizontal through gap 224. The second guide wing plate 225 is inclined toward the top pressure part.

[0057] When the carbon fiber bundle is pressed and tensioned upward on the arc-shaped continuous surface 2332a, the first guide wing plate 215 has a first guide slope 2151 corresponding to the carbon fiber bundle, and the second guide wing plate 225 has a second guide slope 2251 corresponding to the carbon fiber bundle.

[0058] The first guide slope 2151 is located below the surface E1 where the inclined entry surface 2331a is located; the second guide slope 2251 is located below the surface F1 where the inclined delivery surface 2333a is located.

[0059] After the carbon fiber bundle is pressed and tensioned upward along the thickness direction of the arc-shaped continuous surface 2332a, the first guide slope 2151 can simultaneously apply a downward oblique abutment force to the carbon fiber bundle, the oblique entry surface 2331a applies an upward oblique abutment force to the carbon fiber bundle, the oblique delivery surface 2333a applies an upward oblique abutment force to the carbon fiber bundle, and the second guide slope 2251 applies a downward oblique abutment force to the carbon fiber bundle. This allows the carbon fiber bundle to form a pressure-bearing guide on the first guide slope 2151, the oblique entry surface 2331a, the oblique delivery surface 2333a, and the second guide slope 2251, effectively extending the overall pressure area and thus better eliminating torsion.

[0060] In this embodiment, the first mounting bracket 211 is provided with a first height adjustment component for independently adjusting the height of the first upper horizontal pressure plate 212 and the first lower horizontal pressure plate 213.

[0061] The second mounting bracket 221 is provided with a second height adjustment assembly for independently adjusting the height of the second upper horizontal pressure plate 222 and the second lower horizontal pressure plate 223.

[0062] like Figure 2 As shown, a first vertical guide rod 216 is provided on the first mounting bracket 211, and a pair of first adjusting sliders (217a, 217b) are provided on the first vertical guide rod 216. The first upper horizontal pressure plate 212 is connected to the upper first adjusting slider 217a, and the first lower horizontal pressure plate 213 is connected to the lower first adjusting slider 217b.

[0063] The first adjusting slider has a threaded hole corresponding to the first vertical guide rod 216, and the first adjusting slider (217a, 217b) is fastened to the first vertical guide rod 216 by an adjusting bolt (218a, 218b). By loosening the adjusting bolt (218a, 218b) on the threaded hole, the first adjusting slider (217a, 217b) can move up and down to adjust the height of the corresponding horizontal pressure plate.

[0064] The second mounting bracket 221 is provided with a second vertical guide rod 226, and the second vertical guide rod 226 is provided with a pair of second adjusting sliders (227a, 227b) arranged vertically. The second upper horizontal pressure plate 222 is connected to the upper second adjusting slider 227a, and the second lower horizontal pressure plate 223 is connected to the lower second adjusting slider 227b.

[0065] The second adjusting slider has a threaded hole corresponding to the second vertical guide rod 226, and the second adjusting slider (227a, 227b) is fastened to the second vertical guide rod 226 by an adjusting bolt (228a, 228b). By loosening the adjusting bolt (228a, 228b) on the threaded hole, the second adjusting slider (227a, 227b) can move up and down to adjust the height of the corresponding horizontal pressure plate.

[0066] By adjusting the height up and down, different flattening heights, different clamping forces, and different clearance heights can be set according to needs.

[0067] like Figure 2 , 4 As shown in Figure 5, both ends of the tensioning column 232 are connected to a rotating shaft, and the support frame 231 is equipped with an angle adjustment component for adjusting the rotation angle of the rotating shaft; the outer circumferential surface of the tensioning column 232 is composed of multiple sets of carbon fiber shaping surfaces connected in sequence; when the arc-shaped continuous surfaces of different sets of carbon fiber shaping surfaces are directly above, the top pressure inclination of different inclined inlet surfaces on the carbon fiber bundle is different, and the top pressure inclination of different inclined outlet surfaces on the carbon fiber bundle is different.

[0068] like Figure 4 , 5 As shown, when the arc-shaped continuous surface 2332a of the first group of carbon fiber shaping surfaces 233a is directly above, the slope of the inclined entry surface 2331a of the first group of carbon fiber shaping surfaces 233a is A, and the slope of the inclined delivery surface 2333a of the first group of carbon fiber shaping surfaces 233a is B; when the arc-shaped continuous surface 2332b of the second group of carbon fiber shaping surfaces 233b is directly above, the slope of the inclined entry surface 2331b of the second group of carbon fiber shaping surfaces 233b is C, and the slope of the inclined delivery surface 2333b of the first group of carbon fiber shaping surfaces 233b is D.

[0069] Incline A is different from Incline C, and Incline B is different from Incline D.

[0070] like Figure 2As shown, a pivot seat that mates with the pivot shaft is connected to the support frame 231. The pivot seat consists of two elastic clamping plates (234a, 234b), with an adjustable pivot hole between the two elastic clamping plates (234a, 234b) that mates with the pivot shaft. The two elastic clamping plates (234a, 234b) are connected by a clamping adjusting bolt 235. One elastic clamping plate 234b has a connecting hole that mates with the clamping adjusting bolt 235, and the other elastic clamping plate 234a has a screw hole that mates with the clamping adjusting bolt 235. By tightening / loosening the clamping adjusting bolt 235, the pivot seat can clamp and loosen the pivot shaft, thereby allowing the angle of the tensioning column on the pivot shaft to be adjusted.

[0071] By rotating and adjusting, it is possible to select inclined entry surfaces and inclined delivery surfaces with different inclinations as needed, thus improving applicability.

[0072] 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 invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A carbon fiber impregnation device, characterized in that, It includes a yarn rack, a yarn spreading mechanism, and an impregnation and pressing mechanism arranged in sequence; the yarn rack is used to unwind sheet-like or strip-like carbon fiber bundles wound on a drum and forms a feeding direction from the yarn rack to the yarn spreading mechanism and then from the yarn spreading mechanism to the impregnation and pressing mechanism. A carbon fiber anti-twist and wrinkle-reducing mechanism is provided between the yarn frame and the yarn spreading mechanism. In the feeding direction, the carbon fiber anti-twist and wrinkle-reducing mechanism has an inlet horizontal shaping part that feeds the carbon fiber bundle horizontally into the carbon fiber anti-twist and wrinkle-reducing mechanism, an outlet horizontal shaping part that feeds the carbon fiber bundle horizontally out of the carbon fiber anti-twist and wrinkle-reducing mechanism, and a vertical shaping part that presses and tensions the carbon fiber bundle vertically between the inlet horizontal shaping part and the outlet horizontal shaping part. The inlet horizontal shaping section includes a first mounting frame, on which a first upper horizontal pressure plate and a first lower horizontal pressure plate corresponding to the first upper horizontal pressure plate are provided, and a first horizontal passing gap suitable for the carbon fiber bundle to pass through is provided between the first upper horizontal pressure plate and the first lower horizontal pressure plate. When the carbon fiber bundle passes through the first horizontal passing gap, the first upper horizontal pressure plate and the first lower horizontal pressure plate together flatten the carbon fiber bundle along the thickness direction of the carbon fiber bundle. The outlet horizontal shaping section includes a second mounting frame, on which a second upper horizontal pressure plate and a second lower horizontal pressure plate corresponding to the second upper horizontal pressure plate are provided, and a second horizontal passage gap suitable for the passage of carbon fiber bundles is provided between the second upper horizontal pressure plate and the second lower horizontal pressure plate. When the carbon fiber bundle passes through the second horizontal through gap, the second upper horizontal pressure plate and the second lower horizontal pressure plate together flatten the carbon fiber bundle along the thickness direction of the carbon fiber bundle. The vertical shaping section includes a support frame, on which tensioning columns are arranged along the width direction of the carbon fiber prepreg; in the feeding direction, the tensioning columns are located between the first horizontal through gap and the second horizontal through gap; The tensioning column has a vertically protruding top pressing part; the top pressing part forms a height difference with both the first horizontal passing gap and the second horizontal passing gap, and the height difference values ​​are in the same direction; The top pressing part has a set of carbon fiber shaping surfaces, which include an inclined inlet surface, an inclined outlet surface, and an arc-shaped continuous surface for connecting the inclined inlet surface and the inclined outlet surface. The inclined inlet surface is inclined toward the first horizontal through-gap direction, and the inclined outlet surface is inclined toward the second horizontal through-gap direction. After passing through the first horizontal passing gap, the carbon fiber bundle successively reaches the inclined entry surface, the arc-shaped continuous surface, and the inclined delivery surface, and then passes through the second horizontal passing gap.

2. The carbon fiber impregnation equipment according to claim 1, characterized in that, The top pressure part is designed to protrude upwards, and both the first horizontal through gap and the second horizontal through gap are lower than the top pressure part; A first guide wing plate is formed on one side of the first upper horizontal pressure plate corresponding to the outlet of the first horizontal through gap. The first guide wing plate is inclined towards the top pressure part. A second guide wing plate is formed on one side of the second upper horizontal pressure plate corresponding to the inlet of the second horizontal through gap. The second guide wing plate is inclined toward the top pressure part.

3. The carbon fiber impregnation equipment according to claim 2, characterized in that, When the carbon fiber bundle is pressed and tensioned upward on the arc-shaped continuous surface, the first guide wing plate has a first guide slope corresponding to the carbon fiber bundle, and the second guide wing plate has a second guide slope corresponding to the carbon fiber bundle. The first guiding ramp is located below the surface where the inclined entry surface is located; The second guiding slope is located below the surface where the inclined delivery surface is located.

4. The carbon fiber impregnation apparatus according to any one of claims 1-3, characterized in that, The first mounting bracket is equipped with a first height adjustment assembly for independently adjusting the height of the first upper horizontal pressure plate and the first lower horizontal pressure plate.

5. The carbon fiber impregnation equipment according to claim 4, characterized in that, The second mounting bracket is equipped with a second height adjustment assembly for independently adjusting the height of the second upper horizontal pressure plate and the second lower horizontal pressure plate.

6. The carbon fiber impregnation apparatus according to claim 1, 2, 3, or 5, characterized in that, Both ends of the tensioning column are connected to a rotating shaft, and the support frame is equipped with an angle adjustment component for adjusting the rotation angle of the rotating shaft; The outer circumference of the tensioned column is composed of multiple sets of carbon fiber shaped surfaces connected in sequence; When the arc-shaped continuous surface of different groups of carbon fiber shaping surfaces is directly above, the top pressure inclination of different inclined inlet surfaces on the carbon fiber bundles is different, and the top pressure inclination of different inclined outlet surfaces on the carbon fiber bundles is different.

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