Fiber bundle tension adjusting assembly and preforming device

Abstract

The invention discloses a fiber bundle tension adjusting assembly and a preforming device.The fiber bundle tension adjusting assembly comprises a supporting frame and a plurality of tension pieces, the tension pieces are movably connected with the supporting frame, and the moving direction of the tension pieces relative to the supporting frame is perpendicular to the fiber bundle conveying direction; at least one part of the tension parts is used for making contact with a fiber bundle so as to adjust the tension of the fiber bundle, in a projection plane orthogonal to the conveying direction of the fiber bundle, the at least two tension parts are oppositely arranged in the first direction, the at least two tension parts are oppositely arranged in the second direction, and the first direction and the second direction intersect. The fiber bundle tension adjusting assembly provided by the embodiment of the invention is suitable for adjusting the tension of the fiber bundle, can reduce the risk of quality problems such as distortion and bending of a finished product composite profile, and reduces the defective rate.

Description

Technical Field

[0001] This invention relates to the technical field of tensioning devices, and specifically to a fiber bundle tension adjustment component and a preforming device. Background Technology

[0002] In the production process of composite profiles, fiber bundles start from the yarn rack, pass through the yarn guide plate, the impregnation tank, and the pre-forming process, and finally enter the mold to fuse with the resin. Before the fiber bundles enter the mold, the fiber bundles are transported over a long distance. The entanglement and interference between the fiber bundles, as well as the changes in the resin content and viscosity of the fiber bundles after impregnation, cause changes in fiber tension. This results in the actual tension value of the fiber bundles when they enter the mold deviating from the set value, which in turn leads to quality problems such as twisting, bending, and displacement in the finished composite profiles. Summary of the Invention

[0003] The present invention aims to at least partially solve one of the technical problems in the related art.

[0004] Therefore, embodiments of the present invention propose a fiber bundle tension adjustment component, which is suitable for adjusting the tension of fiber bundles, thereby reducing the risk of quality problems such as twisting and bending in finished composite profiles and reducing the defect rate.

[0005] The fiber bundle tension adjustment assembly of this invention includes a support frame and a plurality of tension members. The tension members are movably connected to the support frame. The movement direction of the tension members relative to the support frame is perpendicular to the fiber bundle conveying direction. At least a portion of the tension members is used to contact the fiber bundle to adjust the tension of the fiber bundle. In a projection plane orthogonal to the fiber bundle conveying direction, at least two tension members are arranged opposite each other in a first direction and at least two tension members are arranged opposite each other in a second direction. The first direction and the second direction intersect.

[0006] In some embodiments, at least two of the tension members are arranged opposite each other in the vertical direction, and at least two of the tension members are arranged opposite each other in the horizontal direction.

[0007] In some embodiments, the tensioning element is a tension frame, the tension frame including an interconnected connecting section and an adjusting section, the connecting section being movably connected to the support frame, and the adjusting section being used to contact the fiber bundle to adjust the tension of the fiber bundle; and / or,

[0008] The tension adjustment assembly further includes a drive assembly for driving the connecting section to move relative to the support frame.

[0009] In some embodiments, the number of connecting segments is multiple, at least one of the connecting segments is a first connecting segment, at least one of the connecting segments is a second connecting segment, and the first connecting segment and the second connecting segment are respectively connected to the two ends of the adjustment segment.

[0010] In some embodiments, the drive assembly includes a fixed part and a movable part, the fixed part being connected to the support frame and the movable part being connected to the connecting section; or, the drive assembly includes a motor, a lead screw and a lead nut, the lead screw being rotatably connected to the support frame, the lead nut being connected to the connecting section, the lead nut being threadedly engaged with the lead screw, and the motor being used to drive the lead screw to rotate.

[0011] In some embodiments, the drive assembly includes a stud and a nut, the support frame includes a mounting base, the stud passes through the mounting base, one end of the stud is connected to the connecting section, and the nut is located on the side of the mounting base away from the connecting section, the nut is fitted onto the stud and threadedly engaged with the stud.

[0012] In some embodiments, the two tension frames arranged opposite each other in the vertical direction are a first tension frame and a second tension frame, wherein the adjusting section of the first tension frame is closer to the second tension frame relative to the connecting section of the first tension frame, and the adjusting section of the second tension frame is closer to the first tension frame relative to the connecting section of the second tension frame; the two tension frames arranged opposite each other in the horizontal direction are a third tension frame and a fourth tension frame, wherein the adjusting section of the third tension frame is closer to the fourth tension frame relative to the connecting section of the third tension frame, and the adjusting section of the fourth tension frame is closer to the third tension frame relative to the connecting section of the fourth tension frame.

[0013] In some embodiments, the adjustment segment includes a first segment, a second segment, and a third segment connected in sequence, with the ends of the first segment and the third segment away from the first segment connected to the connecting segment, and the first segment and the third segment gradually approaching each other in a direction closer to the second segment.

[0014] The preforming apparatus of this invention includes the fiber bundle tension adjustment component described in any of the above embodiments.

[0015] In some embodiments, the preforming device further includes a first preforming plate disposed upstream of the fiber bundle tension adjustment assembly, the first preforming plate having a through groove for the fiber bundle to pass through; and / or, the preforming device further includes a second preforming plate disposed downstream of the fiber bundle tension adjustment assembly, the second preforming plate having a preforming groove for the fiber bundle to pass through, so as to limit the arrangement of the fiber bundle using the preforming groove.

[0016] The fiber bundle tension adjustment assembly of this invention allows the fiber bundle to contact a tensioning element. By controlling the tensioning element to move in a direction perpendicular to the fiber bundle conveying direction, the tension of the fiber bundle can be adjusted, so that the fiber bundle enters the mold with a set tension value, thereby reducing the risk of quality problems such as twisting and bending in the finished composite profile. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural schematic diagram of a preforming device according to an embodiment of the present invention.

[0018] Figure 2 This is a plan view of a fiber bundle tension adjustment component according to an embodiment of the present invention.

[0019] Figure 3 This is a three-dimensional structural schematic diagram of a fiber bundle tension adjustment component according to an embodiment of the present invention.

[0020] Figure 4 This is a three-dimensional structural schematic diagram of a fiber bundle tension adjustment component according to another embodiment of the present invention.

[0021] Figure 5 This is a plan view of a fiber bundle tension adjustment assembly according to another embodiment of the present invention.

[0022] Figure label: 100. Preforming device; 10. Fiber bundle tension adjustment assembly; 1. Support frame; 11. Support column; 12. Mounting bracket; 121. Mounting rod; 122. Mounting base; 2. Tension frame; 21. Adjustment section; 211. First section; 212. Second section; 213. Third section; 22. First connecting section; 23. Second connecting section; 24. Tension adjustment area; 3. Drive assembly; 31. Telescopic cylinder; 311. Cylinder body; 312. Telescopic rod; 313. Connecting rod; 32. Stud; 33. Nut; 4. Limiting strip; 20. First preformed plate; 201. Through groove; 30. Second preformed plate; 301. Preformed groove; 200. Mold. Detailed Implementation

[0023] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0024] like Figures 1 to 3As shown, the fiber bundle tension adjustment assembly 10 of this embodiment includes a support frame 1 and a plurality of tension members. The tension members are movably connected to the support frame 1. The movement direction of the tension members relative to the support frame 1 is perpendicular to the fiber bundle conveying direction. At least a portion of the tension members is used to contact the fiber bundle to adjust the tension of the fiber bundle. In a projection plane orthogonal to the fiber bundle conveying direction, at least two tension members are arranged opposite to each other in a first direction and at least two tension members are arranged opposite to each other in a second direction. The first direction and the second direction intersect.

[0025] The fiber bundle tension adjustment component 10 of this invention allows the fiber bundle to contact the tensioning member. By controlling the tensioning member to move in a direction perpendicular to the fiber bundle conveying direction, the tension of the fiber bundle can be adjusted, so that the fiber bundle enters the mold 200 with a set tension value, thereby reducing the risk of quality problems such as twisting and bending in the finished composite profile.

[0026] Furthermore, by dividing multiple fiber bundles into four parts, each of the four fiber bundles contacts two tension members arranged opposite each other in the first direction and two tension members arranged opposite each other in the second direction, the tension of the four fiber bundles can be adjusted. By adjusting the tension of the two fiber bundles arranged opposite each other in the first direction and the two fiber bundles arranged opposite each other in the second direction, and by balancing the relative tension of the fiber bundles in the first and second directions, the straightness of the finished composite profile can be effectively controlled, reducing the probability of bending and twisting of the finished composite profile in the first and second directions, and reducing the defect rate.

[0027] Specifically, such as Figure 1 and Figure 2 As shown, the support frame 1 includes a mounting frame 12 and four support columns 11. The four support columns 11 are arranged in a rectangular shape, and the extension direction of the support columns 11 is consistent with the fiber bundle conveying direction. The support columns 11 are fixedly connected to the outer shell of the mold 200 or supported on the ground by a bracket to ensure the stability of the support columns 11. The mounting frame 12 is fixedly connected to the support columns 11 by bolts, and the tensioning element is connected to the mounting frame 12, thereby realizing the stable installation of the tensioning element.

[0028] Optionally, the tensioning element is made of steel, such as A3 steel or stainless steel.

[0029] This can improve the strength of the tensioning element and ensure the stability of fiber bundle tension adjustment.

[0030] Optionally, the first direction and the second direction are perpendicular to each other.

[0031] In some embodiments, at least two tension members are arranged opposite each other in the vertical direction, and at least two tension members are arranged opposite each other in the horizontal direction.

[0032] If the tension distribution of the fiber bundle is uneven in the vertical direction, the finished profile is prone to bending upwards or downwards due to uneven shrinkage. Similarly, if the tension distribution of the fiber bundle is uneven in the horizontal direction, the finished profile is prone to bending to the left or right due to uneven shrinkage. By using two tension members arranged opposite each other in the vertical direction and two tension members arranged opposite each other in the horizontal direction, the vertical and horizontal tensions of the fiber bundle can be balanced, thereby ensuring the straightness and flatness of the finished profile and reducing the defect rate.

[0033] In some embodiments, such as Figure 1 and Figure 2 As shown, the tensioning element is a tension frame 2, which includes a connecting section and an adjusting section 21 that are connected to each other. The connecting section is movably connected to the support frame 1, and the adjusting section 21 is used to contact the fiber bundle to adjust the tension of the fiber bundle.

[0034] The adjusting section 21 contacts the fiber bundle, controls the movement of the connecting section relative to the support frame 1, and thus drives the adjusting section 21 to move, thereby adjusting the tension of the fiber bundle. The operation is relatively simple.

[0035] Optionally, the cross-section of the adjustment section 21 of the tension frame 2 is rectangular, and the four corners of the rectangle are rounded to improve the smoothness of the outer wall of the adjustment section 21, reduce the contact friction between the fiber bundle and the adjustment section 21, and thus reduce the probability of fiber bundle wear.

[0036] In other embodiments, the cross-section of the adjustment section 21 of the tension frame 2 can also be set to a circular, elliptical or other shape to further improve the smoothness of the outer wall of the adjustment section 21.

[0037] In some embodiments, there are multiple connecting segments, at least one connecting segment is a first connecting segment 22, at least one connecting segment is a second connecting segment 23, and the first connecting segment 22 and the second connecting segment 23 are respectively connected to the two ends of the adjusting segment 21.

[0038] The tension of the fiber bundle is adjusted by contacting the fiber bundle through the adjusting section 21. The first connecting section 22 and the second connecting section 23 are respectively located on both sides of the adjusting section 21, and both the first connecting section 22 and the second connecting section 23 can be movably connected to the support frame 1, which can improve the stability of the adjusting section 21 and thus improve the conveying stability of the fiber bundle.

[0039] Specifically, such as Figure 1 and Figure 2 As shown, the two tension frames 2 arranged opposite each other in the vertical direction can move up and down relative to the support frame 1, and the two tension frames 2 arranged opposite each other in the horizontal direction can move left and right relative to the support frame 1.

[0040] The tension frame 2 is generally U-shaped. The openings of the two tension frames 2 arranged opposite each other in the vertical direction are opposite to each other, and the openings of the two tension frames 2 arranged opposite each other in the horizontal direction are also opposite to each other. The lower part of the tension frame 2 located on the upper side forms its adjustment section 21, and the upper two ends of the tension frame 2 located on the upper side form the first connecting section 22 and the second connecting section 23, respectively. The first connecting section 22 and the second connecting section 23 of the tension frame 2 can be movably connected to the corresponding mounting bracket 12, thereby improving the stability of the tension frame 2.

[0041] The fiber bundle is divided into four parts: top, bottom, left, and right. The four tension frames 2 respectively form four tension adjustment zones 24 for the four fiber bundles to pass through. For example, the fiber bundle passing through the tension adjustment zone 24 on the upper side is attached to the adjustment section 21 of the tension frame 2 on the upper side. Controlling the tension frame 2 on the upper side to move upward can increase the tension of the fiber bundle. Controlling the tension frame 2 on the upper side to move downward can decrease the tension of the fiber bundle, thereby achieving tension adjustment of the fiber bundle.

[0042] In the production process of composite profiles, the fiber bundles can be artificially divided into four parts and the four fiber bundles pass through four tension adjustment zones 24 respectively.

[0043] In some embodiments, the tension adjustment assembly further includes a drive assembly 3 for driving the connecting section to move relative to the support frame 1.

[0044] Using the drive component 3 makes it easier to control the movement of the tension member relative to the support frame 1, thus improving the ease of operation for adjusting the fiber bundle tension.

[0045] In some embodiments, the drive component 3 includes a fixed part and a movable part, the fixed part being connected to the support frame 1 and the movable part being connected to the connecting section.

[0046] Optionally, the drive component 3 is a telescopic cylinder 31, such as an electric cylinder, pneumatic cylinder, hydraulic cylinder, etc.

[0047] The cylinder body 311 of the telescopic cylinder 31 forms the aforementioned fixed part, and the telescopic rod 312 of the telescopic cylinder 31 forms the aforementioned moving part. The telescopic cylinder 31 can control the reciprocating movement of the telescopic rod 312 to drive the tension frame 2 to reciprocate, thereby adjusting the tension of the fiber bundle in contact with the upper and lower tension frames 2.

[0048] As an example, such as Figure 1 and Figure 2As shown, the mounting frame 12 consists of mounting rods 121, whose extension direction is perpendicular to that of the support column 11. Both ends of the mounting rod 121 are fixedly connected to two adjacent support columns 11 by bolts. There are four mounting rods 121, forming a rectangular frame to create a stable support structure. Four tension frames 2 are installed within the rectangular frame formed by the four mounting rods 121, with the openings of the tension frames 2 facing the corresponding mounting rod 121. The first connecting section 22 and the second connecting section 23 of the tension frames 2 can be movably connected to the corresponding mounting rod 121, thereby improving the stability of the tension frames 2.

[0049] like Figure 2 and Figure 3 As shown, the telescopic cylinder 31 corresponds one-to-one with the tension frame 2. The cylinder body 311 of the telescopic cylinder 31 is located on the outside of the rectangular frame formed by the four mounting rods 121. The cylinder body 311 of the telescopic cylinder 31 is fixedly connected to the mounting rods 121 by bolts. The telescopic rod 312 of the telescopic cylinder 31 passes through the mounting rods 121 and is connected to the connecting rod 313. The two ends of the connecting rod 313 are respectively connected to the first connecting section 22 and the second connecting section 23. Thus, the telescopic cylinder 31 can be used to drive the tension frame 2 to move relative to the support frame 1.

[0050] The first connecting segment 22 and the second connecting segment 23 of the tension frame 2 located on the upper side can slide through the mounting rod 121 located on the upper side in the vertical direction, and the first connecting segment 22 and the second connecting segment 23 of the tension frame 2 located on the lower side can slide through the mounting rod 121 located on the lower side in the vertical direction; thereby improving the sliding stability of the two tension frames 2 arranged opposite to each other in the vertical direction.

[0051] The tension frame 2 on the left is provided with limiting strips 4. Two fiber strips form a group, and the two limiting strips 4 are arranged at intervals to form a limiting groove. The connecting rod 313 on the tension frame 2 on the left is located between the two limiting strips 4 and slides with the limiting groove. There are two sets of limiting strips 4, which are respectively located on the upper and lower sides of the telescopic rod 312. Similarly, the tension frame 2 on the right is also provided with two sets of the same limiting strips 4. In this way, the sliding stability of the two tension frames 2 arranged opposite each other in the left and right direction can be improved.

[0052] In some embodiments, the drive assembly 3 includes a motor, a lead screw, and a lead screw nut (not shown in the figure). The lead screw is rotatably connected to the support frame 1, the lead screw nut is connected to the connecting section, and the lead screw nut is threadedly engaged with the lead screw. The motor is used to drive the lead screw to rotate.

[0053] The motor drives the lead screw to rotate, and the screw and the lead screw thread can drive the lead screw nut to move, which in turn drives the tension frame 2 to move, thereby realizing the tension adjustment of the fiber bundle.

[0054] In other embodiments, the drive component 3 can also be configured with other structures, such as a motor-gear rack structure, as long as it can realize the movement control of the tension frame 2, which will not be elaborated here.

[0055] In some embodiments, the drive assembly 3 includes a stud 32 and a nut 33, the support frame 1 includes a mounting base 122, the stud 32 passes through the mounting base 122, one end of the stud 32 is connected to the connecting section, and the nut 33 is located on the side of the mounting base 122 away from the connecting section, the nut 33 is fitted onto the stud 32 and is threadedly engaged with the stud 32.

[0056] By turning the nut 33, the stud 32 can be moved relative to the support frame 1, which in turn drives the tension frame 2 to move relative to the support frame 1, so as to adjust the tension of the fiber bundle. The drive assembly 3 has a simple structure and is relatively easy to operate.

[0057] As an example, such as Figure 4 and Figure 5 As shown, each tension frame 2 is provided with two mounting seats 122 and two drive components 3. The two mounting seats 122 are located between two adjacent support columns 11. The mounting seats 122 are fixedly connected to the support columns 11 by bolts. The stud 32 extends vertically and is fixedly connected to the end of the connecting section. The stud 32 can slide through the mounting seat 122. The nut 33 is located on the side of the mounting seat 122 away from the tension frame 2. The nut 33 is fitted onto the stud 32 and is threadedly engaged with the stud 32. By simultaneously turning the nuts 33 of the two drive components 3, the movement of the tension frame 2 can be controlled, thereby adjusting the tension of the fiber bundle.

[0058] The mounting base 122 forms the aforementioned mounting bracket 12.

[0059] In some embodiments, the two tension frames 2 arranged opposite to each other in the vertical direction are a first tension frame and a second tension frame, respectively. The adjustment section 21 of the first tension frame is closer to the second tension frame relative to the connecting section of the first tension frame, and the adjustment section 21 of the second tension frame is closer to the first tension frame relative to the connecting section of the second tension frame. The two tension frames 2 arranged opposite to each other in the horizontal direction are a third tension frame and a fourth tension frame, respectively. The adjustment section 21 of the third tension frame is closer to the fourth tension frame relative to the connecting section of the third tension frame, and the adjustment section 21 of the fourth tension frame is closer to the third tension frame relative to the connecting section of the fourth tension frame.

[0060] The fiber bundles, which are divided into four parts, are respectively contacted by the adjustment sections 21 of the four tension frames 2 to adjust the tension of the fiber bundles. With the above settings, the adjustment sections 21 of the first tension frame, the second tension frame, the third tension frame and the fourth tension frame are all set relatively close to each other, so that the four fiber bundles are more concentrated when passing through the tension adjustment component, which is more conducive to the fiber bundles converging after tension adjustment and entering the mold 200 for forming in a preset arrangement.

[0061] In some embodiments, the adjustment segment 21 includes a first segment 211, a second segment 212 and a third segment 213 connected in sequence. The ends of the first segment 211 and the third segment 213 away from the first segment 211 are connected to the connecting segment, and the first segment 211 and the third segment 213 gradually move closer to each other in the direction of approaching the second segment 212.

[0062] Therefore, the first segment 211, the second segment 212 and the third segment 213 are all used to contact the fiber bundle, which can increase the contact length with the fiber bundle and make multiple fiber bundles evenly distributed on the adjustment segment 21, thereby improving the uniformity of the fiber bundle tension adjustment.

[0063] Specifically, such as Figure 2 As shown, there are gaps between the four tension frames 2, which can realize the independent adjustment of the tension of the four fiber bundles. The adjustment sections 21 of two adjacent tension frames 2 tend to be parallel to each other, which can increase the total length of the adjustment section 21 and make multiple fiber bundles evenly distributed on the adjustment section 21, thereby improving the uniformity of the fiber bundle tension adjustment.

[0064] like Figure 1 As shown, the preforming device 100 of this embodiment includes the fiber bundle tension adjustment component 10 of any of the above embodiments.

[0065] The preforming device 100 of this embodiment of the invention is suitable for being installed at the entrance of the mold 200. The fiber bundle tension adjustment component 10 can control the tension member to move in a direction perpendicular to the fiber bundle conveying direction, thereby adjusting the tension of the fiber bundle so that the fiber bundle enters the mold 200 with a set tension value, thereby reducing the risk of quality problems such as twisting and bending of the finished composite profile.

[0066] In some embodiments, the preforming device 100 further includes a first preforming plate 20, which is located upstream of the fiber bundle tension adjustment assembly 10 and has a through groove 201 through which the fiber bundle passes.

[0067] The first preforming plate 20 can be used to gather multiple fiber bundles from the previous process, preparing them for subsequent multiple fiber bundles to pass through the tension adjustment assembly.

[0068] Specifically, such as Figure 1 As shown, the first preform plate 20 is mounted on four support columns 11; the first preform plate 20 has a plurality of through holes forming the aforementioned through groove 201, and a plurality of fiber bundles pass through the plurality of holes respectively, thereby converging the plurality of fiber bundles from the previous process into the first preform plate 20, so as to adjust the tension of the plurality of fiber bundles.

[0069] In some embodiments, such as Figure 1 As shown, the preforming device 100 also includes a second preforming plate 30, which is located downstream of the fiber bundle tension adjustment assembly 10. The second preforming plate 30 has a preforming groove 301 through which the fiber bundle passes, so as to restrict the arrangement of the fiber bundle by means of the preforming groove 301.

[0070] The second preforming plate 30 is installed on the four support columns 11. The arrangement of multiple fiber bundles can be restricted by the second preforming plate 30, so that the arrangement of multiple fiber bundles matches the entrance shape of the mold 200, so as to facilitate the smooth progress of the profile forming process.

[0071] Optionally, there are multiple second preforming plates 30, which are arranged at intervals along the fiber bundle conveying direction. The shape of the second preforming plate 30 closer to the mold 200 is closer to the entrance shape of the mold 200 than that of the second preforming plate 30 farther away from the mold 200. Thus, by using multiple second preforming plates 30 to gradually restrict the arrangement sequence of the fiber bundles, the stability of the fiber bundle preforming process can be improved, thereby allowing multiple fiber bundles to enter the mold 200 smoothly and evenly, and reducing the defect rate.

[0072] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0073] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0074] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0075] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0076] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0077] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A fiber bundle tension adjustment component (10), characterized in that, include: Support frame (1); Multiple tension members are movably connected to the support frame (1). The direction of movement of the tension members relative to the support frame (1) is perpendicular to the fiber bundle conveying direction. At least a portion of the tension members is used to contact the fiber bundle to adjust the tension of the fiber bundle. In a projection plane orthogonal to the fiber bundle conveying direction, at least two of the tension members are arranged opposite each other in a first direction and at least two of the tension members are arranged opposite each other in a second direction. The first direction and the second direction intersect.

2. The fiber bundle tension adjustment assembly (10) according to claim 1, characterized in that, At least two of the tensioning members are arranged opposite each other in the vertical direction, and at least two of the tensioning members are arranged opposite each other in the horizontal direction.

3. The fiber bundle tension adjustment assembly (10) according to claim 2, characterized in that, The tensioning element is a tension frame (2), which includes a connecting section and an adjusting section (21) connected to each other. The connecting section is movably connected to the support frame (1), and the adjusting section (21) is used to contact the fiber bundle to adjust the tension of the fiber bundle; and / or, The tension adjustment assembly further includes a drive assembly (3) for driving the connecting segment to move relative to the support frame (1).

4. The fiber bundle tension adjustment assembly (10) according to claim 3, characterized in that, The number of the connecting segments is multiple, at least one of the connecting segments is a first connecting segment (22), at least one of the connecting segments is a second connecting segment (23), and the first connecting segment (22) and the second connecting segment (23) are respectively connected to the two ends of the adjustment segment (21).

5. The fiber bundle tension adjustment assembly (10) according to claim 3, characterized in that, The drive assembly (3) includes a fixed part and a movable part, the fixed part being connected to the support frame (1), and the movable part being connected to the connecting segment; or, The drive assembly (3) includes a motor, a lead screw and a lead screw nut. The lead screw is rotatably connected to the support frame (1). The lead screw nut is connected to the connecting section. The lead screw nut is threadedly engaged with the lead screw. The motor is used to drive the lead screw to rotate.

6. The fiber bundle tension adjustment assembly (10) according to claim 3, characterized in that, The drive assembly (3) includes a stud (32) and a nut (33). The support frame (1) includes a mounting base (122). The stud (32) passes through the mounting base (122). One end of the stud (32) is connected to the connecting section. The nut (33) is located on the side of the mounting base (122) away from the connecting section. The nut (33) is fitted onto the stud (32) and threadedly engages with the stud (32).

7. The fiber bundle tension adjustment assembly (10) according to claim 3, characterized in that, The two tension frames (2) arranged opposite each other in the vertical direction are the first tension frame and the second tension frame, respectively. The adjustment section (21) of the first tension frame is closer to the second tension frame than the connecting section of the first tension frame, and the adjustment section (21) of the second tension frame is closer to the first tension frame than the connecting section of the second tension frame. The two tension frames (2) arranged opposite each other in the left and right directions are the third tension frame and the fourth tension frame, respectively. The adjustment section (21) of the third tension frame is closer to the fourth tension frame than the connecting section of the third tension frame, and the adjustment section (21) of the fourth tension frame is closer to the third tension frame than the connecting section of the fourth tension frame.

8. The fiber bundle tension adjustment assembly (10) according to claim 7, characterized in that, The adjustment section (21) includes a first section (211), a second section (212) and a third section (213) connected in sequence. The ends of the first section (211) and the third section (213) away from the first section (211) are connected to the connecting section. The first section (211) and the third section (213) gradually move closer to each other in the direction closer to the second section (212).

9. A preforming device (100), characterized in that, Includes the fiber bundle tension adjustment assembly (10) according to any one of claims 1-8.

10. The preforming apparatus (100) according to claim 9, characterized in that, The preforming device (100) further includes a first preforming plate (20), which is located upstream of the fiber bundle tension adjustment assembly (10) and has a through groove (201) through which the fiber bundle passes; and / or, The preforming device (100) further includes a second preforming plate (30), which is located downstream of the fiber bundle tension adjustment assembly (10). The second preforming plate (30) has a preforming groove (301) through which the fiber bundle passes, so as to restrict the arrangement of the fiber bundle by means of the preforming groove (301).

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