Carbon fiber tow positioning device

Abstract

The utility model relates to textile equipment technical field, more particularly, a kind of carbon fiber tow positioning device.The carbon fiber tow positioning device includes rotating roller, at least one set of positioning assembly and at least one visual detector, and the outer peripheral wall of rotating roller is provided with multiple annular grooves, each annular groove is used to accommodate a bundle of carbon fiber tow, and cooperate with corresponding carbon fiber tow, so that carbon fiber tow is stretched out;Positioning assembly includes two positioning marks, and annular groove is located between two positioning marks;Visual detector is used to identify positioning assembly, thereby positioning and detecting carbon fiber tow in annular groove.The carbon fiber tow positioning device can quickly position carbon fiber tow, improve detection efficiency.

Description

Technical Field

[0001] This utility model relates to the field of textile equipment technology, and more specifically, to a carbon fiber tow positioning device. Background Technology

[0002] As a high-performance material, carbon fiber's mechanical properties, lightweight characteristics, and chemical stability make it an irreplaceable key material in modern industry. In the aerospace field, carbon fiber composites are widely used in main load-bearing structures such as aircraft fuselages and wings; in the automotive industry, carbon fiber components can effectively reduce the overall vehicle weight and improve energy efficiency; and in sports equipment and wind power generation, carbon fiber has also demonstrated significant technological advantages. The carbon fiber coating process, as a core step in the production process, directly affects the interfacial bonding strength and mechanical properties of the final product.

[0003] However, existing technologies face difficulties in locating defects when using machine vision inspection to detect carbon fiber bundles. Utility Model Content

[0004] The purpose of this invention is to provide a carbon fiber bundle positioning device that can quickly position carbon fiber bundles and improve detection efficiency.

[0005] The embodiments of this utility model can be implemented as follows: In a first aspect, this utility model provides a carbon fiber tow positioning device, comprising: The rotating roller has multiple annular grooves on its outer peripheral wall. These annular grooves are arranged parallel to and spaced apart along the axial direction of the rotating roller. Each annular groove is used to accommodate a bundle of carbon fiber filaments and cooperates with the corresponding carbon fiber filaments to allow the carbon fiber filaments to unfold. At least one set of positioning components, each positioning component including two positioning marks spaced apart on the outer peripheral wall of the rotating roller, with an annular groove located between the two positioning marks; At least one visual detector is used to identify the positioning component, thereby locating and detecting the carbon fiber bundle within the annular groove.

[0006] In an optional embodiment, the number of positioning components is three sets, and all three sets of positioning components are disposed on the outer peripheral wall of the rotating roller; the three sets of positioning components are arranged at intervals along the axial direction of the rotating roller to divide the three positioning areas. Each positioning area has an annular groove.

[0007] In an optional embodiment, the three positioning components each include two first positioning marks, two second positioning marks, and two third positioning marks; the two first positioning marks, two second positioning marks, and two third positioning marks are all disposed on the outer peripheral wall of the rotating roller; Two first positioning marks are spaced apart along the axis of the rotating roller to form a first positioning area, two second positioning marks are spaced apart along the axis of the rotating roller to form a second positioning area, and two third positioning marks are spaced apart along the axis of the rotating roller to form a third positioning area.

[0008] In an optional implementation, the first positioning mark, the second positioning mark, and the third positioning mark are all circular, with the width of the first positioning mark being L1, the width of the second positioning mark being L2, and the width of the third positioning mark being L3; wherein, L1 < L2 < L3.

[0009] In an optional implementation, there are three visual detectors, each corresponding to a set of positioning components, used to identify the corresponding positioning components to locate the corresponding positioning area and identify the carbon fiber bundles in the corresponding annular groove.

[0010] In an optional embodiment, the carbon fiber tow positioning device further includes a connecting seat and a moving mechanism. The connecting seat is rotatably connected to the rotating roller and movably connected to the moving mechanism. The moving mechanism is used to drive the connecting seat to move along the axial direction of the rotating roller.

[0011] In an optional embodiment, the carbon fiber tow positioning device further includes a motor connected to the moving mechanism.

[0012] In an optional implementation, the moving mechanism includes a reciprocating lead screw.

[0013] In an optional embodiment, the carbon fiber tow positioning device further includes a traction driver for traction of the carbon fiber tow, so that the carbon fiber tow moves synchronously with the rotating roller.

[0014] In an optional implementation, the traction drive applies a traction force to the carbon fiber tow ranging from 50 N to 70 N.

[0015] The beneficial effects of the carbon fiber tow positioning device provided in this embodiment of the invention include: This carbon fiber tow positioning device restricts the axial movement of the carbon fiber tow by setting an annular groove. During the synchronous movement of the rotating roller and the carbon fiber tow, the friction between the roller and the tow, combined with traction, unfolds the carbon fiber tow, increasing its width and facilitating its identification by the vision detector. The device also utilizes a positioning component to enable the vision detector to quickly locate the annular groove and the position of the carbon fiber tow, subsequently performing inspection of the tow and thus improving inspection efficiency. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the carbon fiber tow positioning device provided in this embodiment; Figure 2 This is a schematic diagram of the rotating roller and positioning mark provided in this embodiment.

[0018] Icons: 100-Carbon fiber tow positioning device; 110-Rotating roller; 111-Annular groove; 120-Positioning component; 121-Positioning mark; 121a-First positioning mark; 121b-Second positioning mark; 121c-Third positioning mark; 130-Vision detector; 140-Connecting seat; 150-Moving mechanism; 160-Motor; 101-Positioning area; 101a-First positioning area; 101b-Second positioning area; 101c-Third positioning area. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0021] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0022] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0023] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0024] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.

[0025] Please refer to Figure 1 and Figure 2 This utility model provides a carbon fiber tow positioning device 100, which includes a rotating roller 110, at least one set of positioning components 120, and at least one vision detector 130. The outer peripheral wall of the rotating roller 110 is provided with a plurality of annular grooves 111, which are arranged parallel to and spaced apart along the axial direction of the rotating roller 110. Each annular groove 111 is used to accommodate a bundle of carbon fiber filaments and cooperates with the corresponding carbon fiber filaments to allow the carbon fiber filaments to unfold. The positioning component 120 includes two positioning marks 121 spaced apart on the outer peripheral wall of the rotating roller 110, and the annular groove 111 is located between the two positioning marks 121. The vision detector 130 is used to identify the positioning component 120, thereby positioning and detecting the carbon fiber filaments in the annular groove 111.

[0026] Understandably, the rotating roller 110 is a cylindrical rotating body, with both ends mounted on a fixed structure via bearings. The rotating roller 110 can rotate around its own axis. Multiple parallel annular grooves 111 are machined along the axial direction on the outer peripheral wall of the rotating roller 110. Adjacent annular grooves 111 are separated by raised ribs to form a comb-like arrangement. A vision detector 130 is mounted on one side of the rotating roller 110, with its lens facing the outer peripheral wall of the rotating roller 110, for real-time acquisition of images of the roller surface.

[0027] It should be noted that a carbon fiber bundle consists of thousands or even tens of thousands of fibers. When the traction force drives the carbon fiber bundle around the rotating roller 110, the carbon fiber bundle will be naturally stretched open under the interaction of the traction force and the frictional force between it and the inner wall of the annular groove 111, thereby unfolding the bundle. Since the carbon fiber bundle is located inside the annular groove 111, the annular groove 111 can restrict the axial movement of the carbon fiber bundle.

[0028] Preferably, the spacing between two adjacent annular grooves 111 is consistent to ensure the isolation and regularity of the arrangement of multiple filament bundles, so that the vision detector 130 can detect the carbon fiber filament bundles.

[0029] Specifically, in this embodiment, there are three sets of positioning components 120, all of which are disposed on the outer peripheral wall of the rotating roller 110. The three sets of positioning components 120 are arranged sequentially at intervals along the axial direction of the rotating roller 110 to divide the roller into three positioning areas 101. Each positioning area 101 has an annular groove 111. In other embodiments, the number of positioning components 120 can be adjusted according to the actual situation.

[0030] It should be noted that the multiple annular grooves 111 are all located within the positioning area 101. If there are multiple sets of positioning components 120, the multiple annular grooves 111 on the rotating roller 110 are evenly distributed within the multiple positioning areas 101. The positioning area 101 is the area between two positioning marks 121 in a set of positioning components 120. Therefore, if three sets of positioning components 120 are provided, there are three positioning areas 101. Thus, in this embodiment, the multiple annular grooves 111 are evenly distributed within the three positioning areas 101. Since the number of annular grooves 111 is relatively large in this embodiment, each positioning area 101 has multiple annular grooves 111.

[0031] Since the rotating roller 110 is equipped with a positioning component 120, during operation, the vision detector 130 first identifies two positioning marks 121 in a set of positioning components 120. Then, the vision detector 130 detects the carbon fiber bundles in the area between the two positioning marks 121, that is, the carbon fiber bundles in the positioning area 101. By analyzing whether there are carbon fiber bundles in the annular groove 111, the state of the carbon fiber bundles is determined, and the corresponding identification signal is output to the main control system.

[0032] For example: if a carbon fiber bundle is detected in the annular groove 111, the carbon fiber bundle in the annular groove 111 is qualified; if a carbon fiber bundle is not detected in the annular groove 111, the carbon fiber bundle is broken, that is, a broken filament; if a carbon fiber bundle is detected between two adjacent annular grooves 111, the carbon fiber bundle may have shifted.

[0033] The working principle of this embodiment is as follows: Each carbon fiber bundle, under the action of traction, passes around an annular groove 111. The carbon fiber bundle is housed in and in contact with the annular groove 111, thereby causing the rotating roller 110 to move synchronously with the carbon fiber bundle. The vision detector 130 continuously captures images of the surface of the rotating roller 110. When two positioning marks 121 of a set of positioning components 120 enter the field of view, a positioning recognition cycle is triggered, thereby detecting the carbon fiber bundle within the positioning area 101.

[0034] Therefore, in this embodiment, the axial movement of the carbon fiber bundle is restricted by the annular groove 111. During the synchronous movement of the rotating roller 110 and the carbon fiber bundle, the friction between the roller 110 and the carbon fiber bundle, combined with the traction force, is used to unfold the carbon fiber bundle, increasing its width so that the vision detector 130 can identify it. This embodiment also utilizes the positioning component 120 to enable the vision detector 130 to quickly locate the annular groove 111 and the position of the carbon fiber bundle, and then detect the carbon fiber bundle, thereby improving detection efficiency.

[0035] As can be seen from the foregoing, in this embodiment, the number of positioning components 120 is three groups, which can be divided into a first positioning component 120, a second positioning component 120, and a third positioning component 120. The first positioning component 120 includes two first positioning identifiers 121a, the second positioning component 120 includes two second positioning identifiers 121b, and the third positioning component 120 includes two third positioning identifiers 121c; that is, the three groups of positioning components 120 respectively include two first positioning identifiers 121a, two second positioning identifiers 121b, and two third positioning identifiers 121c.

[0036] Two first positioning marks 121a, two second positioning marks 121b, and two third positioning marks 121c are all disposed on the outer peripheral wall of the rotating roller 110; the two first positioning marks 121a are spaced apart along the axis of the rotating roller 110 to form a first positioning area 101a, the two second positioning marks 121b are spaced apart along the axis of the rotating roller 110 to form a second positioning area 101b, and the two third positioning marks 121c are spaced apart along the axis of the rotating roller 110 to form a third positioning area 101c.

[0037] Understandably, when two first positioning markers 121a appear simultaneously in the field of view of the vision detector 130, a positioning recognition cycle is triggered, and the vision detector 130 detects the carbon fiber bundles in the first positioning area 101a. Similarly, when two second positioning markers 121b appear simultaneously in the field of view of the vision detector 130, the vision detector 130 will detect the carbon fiber bundles in the second positioning area 101b. When two third positioning markers 121c appear simultaneously in the field of view of the vision detector 130, the vision detector 130 will detect the carbon fiber bundles in the third positioning area 101c.

[0038] If only one first positioning identifier 121a appears in the field of view of the vision detector 130, it will not be triggered; if both a first positioning identifier 121a and a second positioning identifier 121b appear in the field of view of the vision detector 130, it will also not be triggered.

[0039] Specifically, the first positioning mark 121a, the second positioning mark 121b, and the third positioning mark 121c are all in the shape of a ring. The width of the first positioning mark 121a is L1, the width of the second positioning mark 121b is L2, and the width of the third positioning mark 121c is L3; wherein, L1 < L2 < L3.

[0040] Understandably, the positioning marks 121 of different positioning components 120 have different widths in order to distinguish between different positioning marks 121 and avoid the first positioning mark 121a and a second positioning mark 121b appearing in the field of view of the vision detector 130, triggering a positioning recognition cycle, causing the vision detection device to detect the area without the annular groove 111, thus avoiding the impact on detection accuracy due to misjudgment.

[0041] The positioning mark 121 is circular, which can prevent the positioning mark 121 from being unrecognized by the vision detector 130 when it rotates to the back side during the rotation of the rotating roller 110.

[0042] In conjunction with the foregoing, since there are three sets of positioning components 120, there are three visual detectors 130 in this embodiment. Each visual detector 130 corresponds to a set of positioning components 120, which is used to identify the corresponding positioning components 120, locate the corresponding positioning area 101, and identify the carbon fiber bundles in the corresponding annular groove 111.

[0043] The three visual detectors 130 can be divided into a first visual detector, a second visual detector and a third visual detector. The first visual detector is aligned with the first positioning mark 121a and the first positioning area 101a; the second visual detector is aligned with the second positioning mark 121b and the second positioning area 101b; and the third visual detector is aligned with the third positioning mark 121c and the third positioning area 101c.

[0044] Therefore, this embodiment can monitor different areas separately using three independent visual inspection devices, achieving a highly efficient inspection mode with independent zone inspection, parallel processing, and no interference between them, thus improving inspection accuracy and response speed. Furthermore, the three areas can also be applied to carbon fiber bundles at different stages.

[0045] Furthermore, the carbon fiber tow positioning device 100 also includes a connecting seat 140 and a moving mechanism 150. The connecting seat 140 is rotatably connected to the rotating roller 110 and movably connected to the moving mechanism 150. The moving mechanism 150 is used to drive the connecting seat 140 to move along the axial direction of the rotating roller 110.

[0046] Specifically, the connecting seat 140 is the main support base, that is, the connecting seat 140 is the aforementioned fixed structure, and the two sides of the rotating roller 110 are rotatably mounted on the connecting seat 140. The connecting seat 140 is movably connected to the moving mechanism 150, so that the moving mechanism 150 can drive the connecting seat 140 and the rotating roller 110 to move synchronously, thereby realizing the adjustment of the position of the rotating roller 110 in its axial direction.

[0047] Understandably, when two positioning marks 121 belonging to different positioning components 120 appear in the field of view of the vision detector 130, the position of the rotating roller 110 can be adjusted by the moving mechanism 150, so that two positioning marks 121 belonging to the same positioning component 120 appear in the field of view of the vision detector 130, thereby detecting the carbon fiber bundle in the positioning area 101. In this embodiment, the moving mechanism 150 can be a reciprocating lead screw. In other embodiments, the moving mechanism 150 can also be a cylinder or a ball screw, and this application does not limit it in this way.

[0048] According to the above, the carbon fiber tow positioning device 100 also includes a motor 160, which is connected to the moving mechanism 150; thus, the motor 160 drives the moving mechanism 150 to move. Specifically, in this embodiment, a servo motor 160 or a stepper motor 160 is selected and connected to the ball screw in the moving mechanism 150 via a coupling. The rotational motion of the output shaft of the motor 160 is converted into linear motion via the ball screw, thereby driving the connecting seat 140 and the rotating roller 110 it supports to reciprocate along the axial direction of the rotating roller 110.

[0049] Furthermore, the carbon fiber tow positioning device 100 also includes a traction driver (not shown), which is used to traction the carbon fiber tow so that the carbon fiber tow moves synchronously with the rotating roller 110. The traction driver is located in the filament output direction of the rotating roller 110 to apply a traction force to the carbon fiber tow, thereby driving the carbon fiber tow to move. The carbon fiber tow is housed in and in contact with the annular groove 111, causing the rotating roller 110 to rotate synchronously with the carbon fiber tow as the traction driver pulls the carbon fiber tow. Under the combined action of the traction force and the frictional force generated by the contact between the carbon fiber tow and the rotating roller 110, the carbon fiber tow will gradually unfold.

[0050] As shown in Table 1, the coefficient of variation (Cv) of the carbon fiber bundle is the smallest when the traction force is in the range of 50N-70N. Therefore, in this embodiment, the traction force applied to the carbon fiber bundle by the traction driver should be in the range of 50N-70N to improve the stability of the carbon fiber bundle during operation and avoid loosening and displacement due to insufficient traction force, or fiber damage or breakage due to excessive traction force.

[0051]

[0052] Table 1 In summary, the carbon fiber tow positioning device 100 provided in this embodiment restricts the axial movement of the carbon fiber tow by setting an annular groove 111. During the synchronous movement of the rotating roller 110 and the carbon fiber tow, the friction between itself and the carbon fiber tow, combined with the traction force, is used to unfold the carbon fiber tow, increasing its width so that the vision detector 130 can identify it. The carbon fiber tow positioning device 100 also uses a positioning component 120 to enable the vision detector 130 to quickly locate the annular groove 111 and the position of the carbon fiber tow, and then detect the carbon fiber tow, thereby improving detection efficiency.

[0053] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.

Claims

1. A carbon fiber tow positioning device, characterized in that, include: A rotating roller has multiple annular grooves on its outer peripheral wall. These annular grooves are arranged parallel to and spaced apart along the axial direction of the rotating roller. Each annular groove is used to accommodate a bundle of carbon fiber filaments and cooperates with the corresponding carbon fiber filaments to allow the carbon fiber filaments to unfold. At least one set of positioning components, the positioning components including two positioning marks spaced apart on the outer peripheral wall of the rotating roller, the annular groove being located between the two positioning marks; At least one visual detector is provided for identifying the positioning component, thereby locating and detecting the carbon fiber bundle within the annular groove.

2. The carbon fiber tow positioning device according to claim 1, characterized in that, The number of positioning components is three sets, and all three sets of positioning components are disposed on the outer peripheral wall of the rotating roller; the three sets of positioning components are arranged at intervals along the axial direction of the rotating roller to divide the three positioning areas. Each of the positioning areas has the annular groove.

3. The carbon fiber tow positioning device according to claim 2, characterized in that, The three positioning components each include two first positioning marks, two second positioning marks, and two third positioning marks; the two first positioning marks, the two second positioning marks, and the two third positioning marks are all disposed on the outer peripheral wall of the rotating roller; Two first positioning marks are spaced apart along the axis of the rotating roller to form a first positioning area, two second positioning marks are spaced apart along the axis of the rotating roller to form a second positioning area, and two third positioning marks are spaced apart along the axis of the rotating roller to form a third positioning area.

4. The carbon fiber tow positioning device according to claim 3, characterized in that, The first positioning mark, the second positioning mark, and the third positioning mark are all circular. The width of the first positioning mark is L1, the width of the second positioning mark is L2, and the width of the third positioning mark is L3; wherein, L1 < L2 < L3.

5. The carbon fiber tow positioning device according to claim 2, characterized in that, The number of visual detectors is three, and each visual detector corresponds to a set of positioning components, which are used to identify the corresponding positioning components to locate the corresponding positioning area and identify the carbon fiber bundles in the corresponding annular groove.

6. The carbon fiber tow positioning device according to claim 1, characterized in that, The carbon fiber tow positioning device further includes a connecting seat and a moving mechanism. The connecting seat is rotatably connected to the rotating roller and movably connected to the moving mechanism. The moving mechanism is used to drive the connecting seat to move along the axial direction of the rotating roller.

7. The carbon fiber tow positioning device according to claim 6, characterized in that, The carbon fiber tow positioning device also includes a motor, which is connected to the moving mechanism.

8. The carbon fiber tow positioning device according to claim 6, characterized in that, The moving mechanism includes a reciprocating lead screw.

9. The carbon fiber tow positioning device according to claim 1, characterized in that, The carbon fiber bundle positioning device also includes a traction driver, which is used to pull the carbon fiber bundle so that the carbon fiber bundle moves synchronously with the rotating roller.

10. The carbon fiber tow positioning device according to claim 9, characterized in that, The traction force applied to the carbon fiber bundle by the traction drive ranges from 50 N to 70 N.

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