Automatic preparation device for carbon fiber bundle tension sample strip
The carbon fiber tow sample preparation device addresses the inconsistency in fiber tension by using a limiting assembly with elastic pressure and clamping mechanisms to ensure consistent tension, improving the accuracy and stability of tensile test data.
Patent Information
- Application Number
- CN202422256362.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-14
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-09-14
AI Technical Summary
In the prior art, the carbon fiber bundle wire is loose and has no fixed form, resulting in inconsistent tightness of each single wire, affecting the accuracy and stability of the tensile test data.
An automatic preparation device for carbon fiber bundle wire tension splines is designed, including carbon fiber wire rolls, limiting components, reinforcement fixing devices and wire drawing components. The tension consistency of the carbon fiber bundle wire is ensured through elastic compression and clamping mechanisms, and the bonding of automatic adhesive reinforcement plates is realized.
The consistency of the tension of the carbon fiber tension spline is achieved, ensuring the accuracy and stability of the test data, and at the same time, it is simple to operate, improving sample preparation efficiency and saving labor.
Smart Images
Figure CN223107374U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of material property testing, and particularly relates to an automatic preparation device for a tensile spline of carbon fiber tow. Background Art
[0002] Carbon fiber is a new type of inorganic polymer material with a carbon content greater than 90%. It has comprehensive excellent properties such as light weight, high strength, high modulus, corrosion resistance, low expansion, fatigue resistance, erosion resistance, self-lubrication, and good compatibility with organisms. Therefore, it is widely used in the fields of aviation, aerospace, leisure sports, and civil use.
[0003] In actual production, the tensile properties of carbon fiber are often determined by detecting the force value when the carbon fiber tow breaks under tension. The existing sample preparation method usually involves first removing the tow from the fiber shaft and then bonding a reinforcing patch with glue. Since the carbon fiber tow is soft and loose and has no fixed shape, it is impossible to ensure that the tension of each single filament in the tow is consistent, which affects the accuracy and stability of subsequent test data.
[0004] Therefore, in view of the above technical problems, it is necessary to provide an automatic preparation device for a tensile spline of carbon fiber tow that is simple to operate, improves efficiency, and saves labor, fundamentally solving the problem of ensuring the consistency of the tow tension of the carbon fiber tensile spline and fundamentally ensuring the accuracy and stability of test data.
[0005] The information disclosed in this background art section is only intended to enhance the overall understanding of the present utility model and should not be regarded as an admission or any form of implication that this information constitutes prior art already known to those of ordinary skill in the art. Summary of the Utility Model
[0006] The purpose of the present utility model is to provide an automatic preparation device for a tensile spline of carbon fiber tow, which can solve the problem that it is impossible to ensure that the tension of each single filament in the tow is consistent, affecting the accuracy and stability of subsequent test data.
[0007] To achieve the above purpose, the technical solution provided by a specific embodiment of the present utility model is as follows:
[0008] An automatic preparation device for a tensile spline of carbon fiber tow includes a carbon fiber filament reel, a limiting component, a pair of strengthening and fixing devices, and a wire drawing component;
[0009] A pair of wire separating columns and wire guiding wheels are sequentially installed between the carbon fiber filament reel and the limiting component. A pair of cutting knives are installed on one side of the limiting component close to the strengthening and fixing device. The wire drawing component is located on the side of the strengthening and fixing device away from the limiting component;
[0010] The limiting component includes a U-shaped frame, and an elastic pressing component is installed inside the U-shaped frame. The elastic pressing component can incompletely fix one end of the carbon fiber tow;
[0011] The wire drawing component includes a C-shaped frame, and a clamping component is installed inside the C-shaped frame. The clamping component can completely fix the other end of the carbon fiber tow.
[0012] In one or more embodiments of the present invention, the elastic pressing component includes a pressing plate. The pressing plate is slidably connected inside the U-shaped frame, and a spring is fixedly connected between the top end of the pressing plate and the top end inside the U-shaped frame;
[0013] The top end of the pressing plate is also fixedly connected with a guiding column. The guiding column passes through the inside of the spring, and the top end of the guiding column slidably penetrates to the top end of the U-shaped frame.
[0014] In one or more embodiments of the present invention, a lifting handle is fixedly connected to the top end of the guiding column.
[0015] In one or more embodiments of the present invention, a groove is formed at the bottom end inside the U-shaped frame.
[0016] In one or more embodiments of the present invention, the groove is arc-shaped, and the maximum depth of the groove is less than the diameter of the carbon fiber tow.
[0017] In one or more embodiments of the present invention, the clamping component includes a clamping plate. The clamping plate is slidably connected inside the C-shaped frame. A screw rod is rotatably connected to the top end of the clamping plate, and a nut is fixedly connected to the top end of the C-shaped frame;
[0018] The top end of the screw rod penetrates through the nut, and the nut matches the screw rod.
[0019] In one or more embodiments of the present invention, a knob is fixedly connected to the top end of the screw rod.
[0020] In one or more embodiments of the present invention, a convex block is fixedly connected to the bottom end of the clamping plate. A fixing groove is formed at the bottom end inside the C-shaped frame, and the convex block matches the fixing groove;
[0021] A rubber pad is fixedly connected to the bottom end of the convex block.
[0022] In one or more embodiments of the present invention, the strengthening fixing device includes a fixing base. A set of air cylinders are respectively installed at the upper and lower ends of the fixing base, and a pair of positioning holes are formed in the fixing base.
[0023] In one or more embodiments of the present utility model, a pair of conveying chutes are provided at the rear end of the fixed seat, and the pair of conveying chutes respectively match a pair of positioning holes.
[0024] Compared with the prior art, the automatic carbon fiber tow tensile spline preparation device of the present utility model can realize the automatic preparation of carbon fiber tensile splines with strengthening and bonding integrated. It can not only ensure the consistency of the tow tension of the carbon fiber tensile splines, fundamentally ensure the accuracy and stability of test data, but also has simple operation, saves labor, and improves the sample preparation efficiency. Description of the Drawings
[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments recorded in the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.
[0026] Figure 1 It is a front view schematic diagram of an automatic carbon fiber tow tensile spline preparation device in an embodiment of the present utility model;
[0027] Figure 2 It is a top view schematic diagram of an automatic carbon fiber tow tensile spline preparation device in an embodiment of the present utility model;
[0028] Figure 3 It is a structural diagram of a limiting component of an automatic carbon fiber tow tensile spline preparation device in an embodiment of the present utility model;
[0029] Figure 4 It is a structural diagram of a wire drawing component of an automatic carbon fiber tow tensile spline preparation device in an embodiment of the present utility model.
[0030] Main reference numeral descriptions:
[0031] 10. Carbon fiber filament reel; 20. Wire separating post; 30. Wire guiding wheel; 40. Limiting component; 41. Return-shaped frame; 411. Groove; 42. Pressing plate; 43. Spring; 44. Guide post; 441. Lifting handle; 50. Cutting knife; 60. Cylinder; 70. Fixed seat; 71. Positioning hole; 80. Wire drawing component; 81. C-shaped frame; 82. Fixed groove; 83. Clamping plate; 831. Convex block; 84. Nut; 85. Screw rod; 851. Knob; 90. Conveying chute; 100. Reinforcing plate. Detailed implementation manners
[0032] To enable those skilled in the art to better understand the technical solutions in the present utility model, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0033] As Figures 1 - 4 shown, an automatic preparation device for a carbon fiber bundle tensile spline in an embodiment of the present utility model includes a carbon fiber filament reel 10, a wire separating column 20, a wire guiding wheel 30, a limiting component 40, a cutting knife 50, a pair of strengthening and fixing devices, and a wire drawing component 80 arranged in sequence.
[0034] Among them, carbon fiber filaments are wound outside the carbon fiber filament reel 10. A pair of wire separating columns 20 are used to gather multiple groups of carbon fiber filaments released from the carbon fiber filament reel 10 into a bundle, and the wire guiding wheel 30 is used to guide and convey the carbon fiber bundle. A pair of cutting knives 50 are installed on one side of the limiting component 40 close to the strengthening and fixing device, and the pair of cutting knives 50 are used to cut off the carbon fiber bundle.
[0035] As Figure 3 shown, the limiting component 40 includes a U-shaped frame 41. An elastic pressing component is installed inside the U-shaped frame 41. The elastic pressing component further includes a pressing plate 42. The pressing plate 42 is slidably connected inside the U-shaped frame 41. A spring 43 is fixedly connected between the top end of the pressing plate 42 and the top end inside the U-shaped frame 41. Under the reaction force of the spring 43, the bottom end of the pressing plate 42 can be tightly pressed against the bottom end inside the U-shaped frame 41, so as to elastically press the passing carbon fiber bundle.
[0036] A groove 411 is opened at the bottom end inside the U-shaped frame 41, and the carbon fiber bundle passes through the inside of the lifting handle 441. The groove 411 is arc-shaped, and the maximum depth of the groove 411 is less than the diameter of the carbon fiber bundle. That is to say, the carbon fiber bundle can be elastically pressed by the pressing plate 42 inside the groove 411 to achieve its incomplete fixation.
[0037] Specifically, after the carbon fiber bundle is incompletely fixed by the limiting component 40, the carbon fiber bundle can still be pulled out. However, the elastic pressing will generate a certain resistance to it, ensuring that the carbon fiber bundle can be straightened during the pulling process and ensuring consistent tension. In addition, when a group of splines is prepared, the cutting knife 50 cuts off the carbon fiber bundle. At this time, under the action of elastic pressing, the remaining carbon fiber bundle will not become loose, preventing scattering, and the end of the carbon fiber bundle is still located on one side of the limiting component 40, so as to continue pulling the carbon fiber bundle to prepare splines, which is very convenient to operate.
[0038] The top of the pressing plate 42 is also fixedly connected to a guide column 44, which passes through the inside of the spring 43, and the top of the guide column 44 slides through the top of the return frame 41. The guide column 44 can slide and rise and fall arbitrarily to drive the pressing plate 42 to rise and fall. The top of the guide column 44 is fixedly connected to a lifting handle 441 for convenient manual operation.
[0039] Specifically, by pulling the lifting handle 441, the pressing plate 42 can be driven to slide and rise inside the return frame 41 to achieve elastic compression control. In the process of passing the carbon fiber bundle through the return frame 41, the lifting handle 441 can be pulled upward to raise the pressing plate 42 to facilitate the passing of the carbon fiber bundle.
[0040] like Figure 4 As shown, the wire drawing assembly 80 is located on the side of the reinforcing fixing device away from the limiting assembly 40, and the wire drawing assembly 80 includes a C-shaped frame 81, and a clamping assembly is installed inside the C-shaped frame 81, and the clamping assembly includes a clamping plate 83, which is slidably connected inside the C-shaped frame 81, and the top of the clamping plate 83 is rotatably connected to a screw rod 85, and the top of the C-shaped frame 81 is fixedly connected to a nut 84. The top of the screw rod 85 passes through the nut 84, and the nut 84 is threadedly matched with the screw rod 85. By rotating the screw 85, the clamping plate 83 can be driven to slide and rise inside the C-shaped frame 81.
[0041] The top end of the screw rod 85 is fixedly connected with a knob 851 , and the screw rod 85 can be conveniently rotated manually by means of the knob 851 .
[0042] A protrusion 831 is fixedly connected to the bottom end of the clamping plate 83, and a fixing groove 82 is opened at the bottom end of the C-shaped frame 81. The protrusion 831 can be slidably inserted into the fixing groove 82 to clamp the end of the carbon fiber bundle in the fixing groove 82, thereby completely fixing the end of the carbon fiber bundle.
[0043] Specifically, after the end of the carbon fiber bundle is pulled through the reinforcing fixing device, the end is allowed to enter the fixing groove 82, and then the knob 851 is turned to drive the clamping plate 83 to descend until the protrusion 831 at the bottom of the clamping plate 83 enters the fixing groove 82, clamping the carbon fiber bundle and fixing it, and then the reinforcing plate 100 can be bonded.
[0044] Preferably, in this embodiment, a rubber pad is fixedly connected to the bottom end of the protrusion 831, and the rubber pad significantly increases the friction force, thereby preventing the carbon fiber bundle from loosening inside the fixing groove 82 and improving stability.
[0045] The reinforcing fixing device comprises a fixing seat 70, a group of cylinders 60 are respectively installed at the upper and lower ends of the fixing seat 70, and a pair of positioning holes 71 are opened on the fixing seat 70, and the pair of positioning holes 71 are respectively used to position and place the reinforcing plates 100 at the upper and lower positions.
[0046] A pair of conveying chutes 90 are provided at the rear end of the fixed seat 70, and a number of reinforcing plates 100 are placed on each of the pair of conveying chutes 90. Among them, the reinforcing plates 100 conveyed on the conveying chutes 90 are coated with adhesive liquid in advance at specified positions for bonding with the carbon fiber bundle filaments. The pair of conveying chutes 90 respectively match with a pair of positioning holes 71, and can feed the reinforcing plates 100 into the interior of the positioning holes 71 to realize the automatic feeding of the reinforcing plates 100.
[0047] Specifically, after the reinforcing plates 100 at the upper and lower positions respectively enter the interior of the pair of positioning holes 71, the air cylinders 60 at the upper and lower ends are simultaneously started, and the reinforcing plates 100 at the upper and lower ends are clamped on the carbon fiber bundle filaments and wait for firm bonding. In this way, through a pair of strengthening and fixing devices, the reinforcing plates 100 can be fixed at both ends of the carbon fiber bundle filaments to realize the automatic preparation of the spline.
[0048] During use, the carbon fiber bundle filaments on the carbon fiber spool 10 sequentially pass through the wire separating column 20, the wire guiding wheel 30, the limiting assembly 40, the cutting knife 50, are drawn through a pair of strengthening and fixing devices, and the ends are fixed by the wire drawing assembly 80. Under the action of the limiting assembly 40, it can automatically maintain a certain tension during the drawing process. Then the reinforcing plates 100 are conveyed on the conveying chutes 90 and enter the interior of the positioning holes 71. At the same time, a pair of air cylinders 60 are started, driving the upper and lower reinforcing plates 100 to move towards the carbon fiber bundle filaments until they are clamped, and maintaining the clamped state for about 60 s. The upper and lower reinforcing plates 100 are firmly bonded, and the carbon fiber bundle filaments are bonded between the upper and lower reinforcing plates 100. Then, before the pair of air cylinders 60 contract, the carbon fiber bundle filaments are cut by the cutting knife 50, and the preparation of the carbon fiber bundle filament tensile spline is completed.
[0049] The automatic preparation device for the carbon fiber bundle filament tensile spline of the present utility model can realize the automatic preparation of the carbon fiber tensile spline integrating strengthening and bonding. It can not only ensure the consistency of the tension of the carbon fiber bundle filaments of the carbon fiber tensile spline, fundamentally ensure the accuracy and stability of the test data, but also is simple to operate, saves labor, and improves the sample preparation efficiency.
[0050] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-mentioned exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, it is intended to embrace all changes falling within the meaning and scope of the equivalent elements of the claims in the present utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.
[0051] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. An automatic preparation device for a carbon fiber tow tensile spline, characterized in that, It includes a carbon fiber filament coil, a limit component, a pair of strengthening and fixing devices, and a wire drawing component; A pair of wire separating columns and a wire guiding wheel are sequentially installed between the carbon fiber filament coil and the limit component. A pair of cutting knives are installed on one side of the limit component close to the strengthening and fixing device. The wire drawing component is located on the side of the strengthening and fixing device away from the limit component; The limit component includes a U-shaped frame. An elastic pressing component is installed inside the U-shaped frame. The elastic pressing component can incompletely fix one end of the carbon fiber bundle; The wire drawing component includes a C-shaped frame. A clamping component is installed inside the C-shaped frame. The clamping component can completely fix the other end of the carbon fiber bundle.
2. The automatic preparation device for carbon fiber tow tensile splines according to claim 1, wherein The elastic pressing component includes a pressing plate. The pressing plate is slidably connected inside the U-shaped frame. A spring is fixedly connected between the top end of the pressing plate and the top end inside the U-shaped frame; A guiding column is also fixedly connected to the top end of the pressing plate. The guiding column passes through the inside of the spring, and the top end of the guiding column slidably penetrates to the top end of the U-shaped frame.
3. The automatic preparation device for carbon fiber tow tensile splines according to claim 2, characterized in that, A lifting handle is fixedly connected to the top end of the guiding column.
4. The automatic preparation device for a carbon fiber tow tensile spline according to claim 3, characterized in that, A groove is formed at the bottom end inside the U-shaped frame.
5. An automatic preparation device for a carbon fiber tow tensile spline according to claim 4, characterized in that, The groove is arc-shaped, and the maximum depth of the groove is less than the diameter of the carbon fiber bundle.
6. The automatic preparation device for a carbon fiber tow tensile spline according to claim 1, characterized in that, The clamping component includes a clamping plate. The clamping plate is slidably connected inside the C-shaped frame. A screw rod is rotatably connected to the top end of the clamping plate. A nut is fixedly connected to the top end of the C-shaped frame; The top end of the screw rod penetrates through the nut, and the nut matches the screw rod.
7. An automatic preparation device for a carbon fiber bundle tensile spline according to claim 6, characterized in that, A knob is fixedly connected to the top end of the screw rod.
8. The automatic preparation device for a carbon fiber tow tensile spline according to claim 6, characterized in that, A convex block is fixedly connected to the bottom end of the clamping plate. A fixing groove is formed at the bottom end inside the C-shaped frame. The convex block matches the fixing groove; A rubber pad is fixedly connected to the bottom end of the convex block.
9. An automatic preparation device for a carbon fiber tow tensile spline according to claim 1, characterized in that, The strengthening and fixing device includes a fixed seat. A set of cylinders are respectively installed at the upper and lower ends of the fixed seat. A pair of positioning holes are formed in the fixed seat.
10. The automatic preparation device for a carbon fiber tow tensile spline according to claim 9, characterized in that, A pair of conveying chutes are arranged at the rear end of the fixed seat. The pair of conveying chutes respectively match the pair of positioning holes.