A vertical carbon fiber spreading frame

Abstract

This utility model relates to the field of fiber spreading equipment technology, and in particular to a vertical carbon fiber spreading frame, including a frame, a drive mechanism, and a yarn feeding mechanism. The yarn feeding mechanism includes several yarn feeding components, which are spaced apart within the frame. Each yarn feeding component includes a guide roller, several swing arms, and several yarn bobbins. The output end of the drive mechanism is connected to the guide roller for transmission. The drive mechanism provides power for the rotation of the guide roller. The guide roller is rotatably connected to the frame. The first end of the swing arm is rotatably arranged on the guide roller, and the first end of the swing arm is connected to the guide roller through a torsion spring, so that the yarn on the yarn bobbin is close to the guide roller. The swing arms are spaced apart circumferentially along the guide roller, and the tail end of the swing arm is rotatably connected to its corresponding yarn bobbin. All guide rollers are driven synchronously by a motor to ensure that the unwinding speed of each yarn bobbin is consistent. Combined with the automatic adjustment effect of the torsion spring inside the swing arm, the outer wall of the yarn bobbin is always in close contact with the guide roller, effectively maintaining stable yarn tension.

Description

Technical Field

[0001] This utility model relates to the field of fiber spreading equipment technology, and in particular to a vertical carbon fiber spreading frame. Background Technology

[0002] The application of carbon fiber composites in aerospace, automotive, and sporting goods is becoming increasingly widespread, leading to increasingly stringent requirements for their manufacturing processes. In the carbon fiber weaving or prepreg production process, the yarn crease, as a key piece of equipment, is responsible for the stable transport of carbon fiber yarn. Currently, most carbon fiber yarn creases employ a passive yarn crease design, with the yarn bobbin unwinding laterally. This method has significant drawbacks: as the yarn bobbin diameter gradually decreases during use, changes in the unwinding radius make it difficult to maintain stable yarn tension and linear speed; simultaneously, the ribbon-shaped carbon fiber yarn is prone to bending and uneven width during bobbin forming and unwinding, resulting in inconsistent unwinding tension across different bobbins, failing to meet the constant tension control required by the process. This directly affects the quality uniformity and mechanical properties of the subsequent composite materials. Utility Model Content

[0003] The technical problem this invention aims to solve is to overcome the shortcomings of most existing carbon fiber spreading frames, which use a passive spreading frame design with a transverse unwinding method for the yarn bobbin. This method has obvious drawbacks: as the diameter of the yarn bobbin gradually decreases during use, the change in the unwinding radius makes it difficult to maintain stable yarn tension and linear speed. Therefore, this invention provides a vertical carbon fiber spreading frame.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a vertical carbon fiber spreading frame, including a frame, a drive mechanism, and a yarn feeding mechanism. The yarn feeding mechanism includes several yarn feeding components, which are spaced apart within the frame. Each yarn feeding component includes a guide roller, several swing arms, and several yarn bobbins. The output end of the drive mechanism is connected to the guide roller for transmission. The drive mechanism is used to provide power for the rotation of the guide roller. The guide roller is rotatably connected to the frame. The first end of the swing arm is rotatably arranged on the guide roller, and the first end of the swing arm is connected to the guide roller through a torsion spring, so that the yarn on the yarn bobbin is close to the guide roller. The swing arms are spaced apart circumferentially along the guide roller, and the yarn bobbin and the swing arm correspond one-to-one. The tail end of the swing arm is rotatably connected to its corresponding yarn bobbin. All guide rollers are driven to rotate synchronously by a motor to ensure that the unwinding speed of each yarn bobbin is consistent. Combined with the automatic adjustment effect of the torsion spring inside the swing arm, the outer wall of the yarn bobbin is always close to the guide roller, effectively maintaining the stability of the yarn tension and meeting the high standard process requirements.

[0005] To address the issue of ensuring flexible rotation and stable load-bearing capacity of the yarn bobbin and swing arm connection structure, the yarn bobbin further includes a fixed shaft, a bobbin frame, a bobbin body, and a fixed seat. The tail end of the swing arm is connected to the fixed seat, the fixed shaft and the fixed seat are fixedly connected, the bobbin frame and the fixed shaft are rotatably connected, and the bobbin body and the yarn frame are fixedly connected.

[0006] To address the issue of needing to synchronously drive multiple yarn feeding assemblies to maintain consistent linear speeds, the system further includes a drive connection between the output end of the drive mechanism and the guide roller of the first yarn feeding assembly in the yarn feeding mechanism, and a drive connection between the guide rollers of two adjacent yarn feeding assemblies.

[0007] To address the need for efficient and precise transmission between the machine and the guide rollers, a drive mechanism is further included, comprising a motor, a mounting base, and a bracket. One side of the mounting base is fixedly connected to the machine frame, and the other side is fixedly connected to the bracket. The motor is fixedly connected to the mounting base. The output shaft of the motor is connected to the guide roller of the first yarn feeding component in the yarn feeding mechanism, as well as to the guide rollers of two adjacent yarn feeding components, through a synchronous transmission component.

[0008] To address the issue of slippage or tooth breakage in synchronous transmission, a further synchronous transmission assembly is included, comprising a synchronous belt and two synchronous pulleys. One synchronous pulley is positioned on a guide roller / motor, while the other synchronous pulley is positioned on an adjacent guide roller. The synchronous belt wraps around the two synchronous pulleys and is connected end-to-end.

[0009] To address the issue of synchronous belts potentially loosening and affecting transmission accuracy over long-term use, the synchronous transmission assembly further includes a tension pulley, which is rotatably connected to the frame and rests against the synchronous belt.

[0010] The beneficial effects of this utility model are as follows: The vertical carbon fiber spreading frame provided by this utility model drives all guide rollers to rotate synchronously through a motor, ensuring that the unwinding speed of each yarn bobbin is consistent. Combined with the automatic adjustment effect of the torsion spring inside the swing arm, the outer wall of the yarn bobbin is always in close contact with the guide roller, effectively maintaining stable yarn tension and meeting high standard process requirements. Attached Figure Description

[0011] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure of the present invention, which includes a motor-free housing and a concealed frame portion. Figure 3 This is a utility model Figure 2 Enlarged structural diagram at point A; Figure 4 This is a top view of the yarn feeding assembly of this utility model; Figure 5 This is a utility model Figure 4 Schematic diagram of the cross-sectional structure at point BB; Figure 6 This is a utility model Figure 4 A schematic diagram of the cross-sectional structure at the CC section; Figure 7 This is a utility model Figure 5 A magnified structural diagram at point D.

[0013] In the diagram: 1. Frame, 2. Drive mechanism, 21. Motor, 22. Mounting base, 23. Bracket, 3. Yarn feeding assembly, 31. Guide roller, 32. Swing arm, 33. Yarn bobbin, 331. Fixed shaft, 332. Bobbin frame, 333. Bobbin body, 334. Fixed base, 34. Torsion spring, 4. Synchronous transmission assembly, 41. Synchronous belt, 42. Synchronous pulley, 43. Tensioner. Detailed Implementation

[0014] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0015] like Figure 1 This is a schematic diagram of the structure of this utility model. A vertical carbon fiber spreading frame includes a frame 1, a drive mechanism 2, and a yarn feeding mechanism. The yarn feeding mechanism includes several yarn feeding components 3, which are spaced apart within the frame 1. Each yarn feeding component 3 includes a guide roller 31, several swing arms 32, and several yarn bobbins 33. The output end of the drive mechanism 2 is connected to the guide roller 31 for transmission. The drive mechanism 2 provides power for the rotation of the guide roller 31. The guide roller 31 is rotatably connected to the frame 1. The first end of each swing arm 32 is rotatably arranged on the guide roller 31. The yarn on the yarn bobbin 33 is connected to the guide roller 31 by a torsion spring 34, so that the yarn on the yarn bobbin 33 is close to the guide roller 31. The swing arms 32 are distributed circumferentially along the guide roller 31. The yarn bobbin 33 and the swing arms 32 correspond one to one. The tail end of the swing arm 32 is rotatably connected to the corresponding yarn bobbin 33. The motor 21 actively drives all the guide rollers 31 to rotate synchronously, ensuring that the unwinding speed of each yarn bobbin 33 is consistent. Combined with the automatic adjustment of the torsion spring inside the swing arm 32, the outer wall of the yarn bobbin 33 is always close to the guide roller 31, effectively maintaining the stability of the yarn tension and meeting the high standard process requirements.

[0016] Furthermore, the yarn bobbins 33 are arranged vertically. The vertical arrangement of the yarn bobbins 33 reduces yarn bending and friction, avoids uneven yarn width and bending, and improves the yarn fiber spreading effect and overall quality.

[0017] like Figure 4 , 5As shown in Figures 6 and 7, the yarn bobbin 33 includes a fixed shaft 331, a bobbin frame 332, a bobbin body 333, and a fixed seat 334. The tail end of the swing arm 32 is connected to the fixed seat 334. The fixed shaft 331 and the fixed seat 334 are fixedly connected. The bobbin frame 332 and the fixed shaft 331 are rotatably connected. The bobbin body 333 and the yarn frame are fixedly connected. The torsion spring 34 provided between the swing arm 32 and the guide roller 31 can automatically adjust the angle of the swing arm 32 as the diameter of the yarn bobbin 33 decreases, so as to maintain a stable contact pressure between the yarn bobbin 33 and the guide roller 31 and ensure consistent tension. The rotatable connection design between the fixed shaft 331 and the bobbin frame 332 reduces friction, avoids yarn wear, and ensures smooth unwinding.

[0018] like Figure 2 , 3 As shown, the output end of the drive mechanism 2 is connected to the guide roller 31 of the first yarn feeding component 3 in the yarn feeding mechanism. The guide rollers 31 of two adjacent yarn feeding components 3 are connected to each other. A single motor 21 drives multiple yarn feeding components 3. The synchronous belt 41 drives the power to achieve efficient power distribution, reduce system complexity and manufacturing cost, and facilitate maintenance and control.

[0019] like Figure 2 , 3 As shown, the drive mechanism 2 includes a motor 21, a mounting base 22, and a bracket 23. One side of the mounting base 22 is fixedly connected to the frame 1, and the other side is fixedly connected to the bracket 23. The motor 21 is fixedly connected to the mounting base 22. The output shaft of the motor 21 is connected to the guide roller 31 of the first yarn feeding component 3 in the yarn feeding mechanism, as well as to the guide rollers 31 of two adjacent yarn feeding components 3, through a synchronous transmission component 4.

[0020] like Figure 2 , 3 As shown, the synchronous transmission assembly 4 includes a synchronous belt 41 and two synchronous pulleys 42. One synchronous pulley 42 is arranged on the guide roller 31 / motor 21, and the other synchronous pulley 42 is arranged on the adjacent guide roller 31. The synchronous belt 41 passes around the two synchronous pulleys 42 and is connected end to end.

[0021] The synchronous transmission assembly 4 also includes a tensioning pulley 43, which is rotatably connected to the frame 1. The tensioning pulley 43 abuts against the synchronous belt 41. The tensioning pulley 43 is designed to keep the synchronous belt in a taut state at all times to avoid slippage and ensure transmission stability.

[0022] Working process: Motor 21 drives the guide roller 31 of the first yarn feeding assembly 3 to rotate through synchronous belt 41, and then drives the guide rollers 31 of each subsequent yarn feeding assembly 3 to rotate synchronously through synchronous transmission assembly 4; the carbon fiber yarn on each yarn bobbin 33 is unwound, and the swing arm 32 keeps the outer wall of the yarn bobbin 33 pressed against the guide roller 31 under the action of torsion spring 34 to ensure constant unwinding speed; as the diameter of the yarn bobbin 33 gradually decreases, the swing arm 32 automatically adjusts the angle under the restoring force of torsion spring 34 to maintain the contact pressure between the yarn bobbin 33 and the guide roller 31, thereby ensuring stable yarn tension; the unwound yarn of each yarn bobbin 33 is collected by the guide roller 31 and output to enter the subsequent fiber spreading or weaving process, realizing continuous production with constant tension and constant linear speed.

[0023] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A vertical carbon fiber spreading frame, characterized in that, The machine includes a frame (1), a drive mechanism (2), and a yarn feeding mechanism. The yarn feeding mechanism includes several yarn feeding assemblies (3) spaced apart within the frame (1). Each yarn feeding assembly (3) includes a guide roller (31), several swing arms (32), and several yarn bobbins (33). The output end of the drive mechanism (2) is connected to the guide roller (31) via a transmission. The drive mechanism (2) provides power for the rotation of the guide roller (31). The swing arm (32) is rotatably connected to the frame (1). The first end of the swing arm (32) is rotatably arranged on the guide roller (31), and the first end of the swing arm (32) and the guide roller (31) are connected by a torsion spring (34), so that the yarn on the yarn tube (33) is close to the guide roller (31). The swing arms (32) are distributed circumferentially along the guide roller (31). The yarn tube (33) and the swing arm (32) correspond one to one. The tail end of the swing arm (32) is rotatably connected to the corresponding yarn tube (33).

2. The vertical carbon fiber spreading frame as described in claim 1, characterized in that: The yarn bobbin (33) includes a fixed shaft (331), a bobbin frame (332), a bobbin body (333), and a fixed seat (334). The tail end of the swing arm (32) is connected to the fixed seat (334). The fixed shaft (331) and the fixed seat (334) are fixedly connected. The bobbin frame (332) and the fixed shaft (331) are rotatably connected. The bobbin body (333) and the yarn frame are fixedly connected.

3. The vertical carbon fiber spreading frame as described in claim 1, characterized in that: The output end of the drive mechanism (2) is connected to the guide roller (31) of the first yarn feeding component (3) in the yarn feeding mechanism, and the guide rollers (31) of two adjacent yarn feeding components (3) are connected to each other.

4. A vertical carbon fiber spreading frame as described in claim 3, characterized in that: The drive mechanism (2) includes a motor (21), a mounting base (22) and a bracket (23). The mounting base (22) is fixedly connected to the frame (1) on one side and to the bracket (23) on the other side. The motor (21) is fixedly connected to the mounting base (22). The output shaft of the motor (21) is connected to the guide roller (31) of the first yarn feeding component (3) in the yarn feeding mechanism and to the guide rollers (31) of two adjacent yarn feeding components (3) through a synchronous transmission component (4).

5. A vertical carbon fiber spreading frame as described in claim 4, characterized in that: The synchronous transmission assembly (4) includes a synchronous belt (41) and two synchronous pulleys (42), one of which is arranged on the guide roller (31) / motor (21) and the other is arranged on the adjacent guide roller (31). The synchronous belt (41) passes around the two synchronous pulleys (42) and is connected end to end.

6. A vertical carbon fiber spreading frame as described in claim 5, characterized in that: The synchronous transmission assembly (4) also includes a tension wheel (43), which is rotatably connected to the frame (1) and abuts against the synchronous belt (41).

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