Stretching mechanism for carbon fiber tows

Abstract

The utility model discloses a stretching mechanism for a carbon fiber tow, and relates to the technical field of carbon fiber processing. Comprising a fixing frame, a conveying roller assembly is installed on the fixing frame, the conveying roller assembly comprises a support, a carrier roller, a fixing plate, an upper lug seat, a pin shaft, a torsion spring, a lower lug seat, a nylon roller, a diagonal draw bar and a connecting bolt, and the carrier roller is installed on the lower portion of the support through a bearing. According to the stretching mechanism for the carbon fiber tow, the tow penetrates through the conveying roller assembly on one side and flows out of the conveying roller assembly on the other side after being soaked and carbonized, a lower lug seat is hinged to an upper lug seat through a pin shaft, meanwhile, the lower lug seat is connected with a support through a diagonal draw bar, and the diagonal draw bar is movably connected with the support through a connecting bolt; and the arranged torsion spring can provide elastic pre-tightening force, so that in the soaking carbonization process of the tows, under the cooperation of the torsion spring and the diagonal draw bar, proper tensioning force can be kept, and the production efficiency of carbon fibers is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of carbon fiber processing technology, specifically a stretching mechanism for carbon fiber tow. Background Technology

[0002] Carbon fiber refers to high-strength, high-modulus fibers with a carbon content of over 90%. It has the highest temperature resistance among all chemical fibers and is made from acrylic and viscose fibers through high-temperature oxidation and carbonization. It is an excellent material for manufacturing high-tech equipment such as aerospace equipment. Carbon fiber is a brittle material, and its tensile strength is affected by various factors, such as surface voids, internal voids, cracks, and contaminants. Carbon fiber production requires soaking and carbonization treatment.

[0003] In the current technology, a material conveying device is required during the immersion carbonization process of carbon fiber raw materials. The material conveying device mainly includes a fixed frame and a conveying roller. The fixed frame is installed on both sides of the immersion carbonization device, and the raw material is conveyed through the conveying roller on both sides.

[0004] However, in the existing technology, the carbon fiber itself may shrink or expand during the soaking and carbonization process. Since the conveying efficiency of the two conveying rollers is equal, the shrinkage or expansion of the carbon fiber during the soaking or carbonization process may cause the carbon fiber to not be kept taut at all times, which in turn affects the production quality of the carbon fiber to a certain extent. Utility Model Content

[0005] This invention provides a stretching mechanism for carbon fiber tow to solve the problems in the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a carbon fiber tow tensioning mechanism, comprising a fixed frame, on which a conveying roller assembly is mounted; the conveying roller assembly includes a support, a support roller, a fixed plate, an upper ear seat, a pin, a torsion spring, a lower ear seat, a nylon roller, a tie rod, and connecting bolts; the support roller is mounted on the lower part of the support via bearings; the fixed plate is mounted on the top of the support via screws; the upper ear seat is mounted on the fixed plate via screws; the lower ear seat is hinged to the upper ear seat via a pin; the torsion spring is fitted onto the pin, and both ends of the torsion spring are respectively engaged with the lower ear seat and the upper ear seat; the nylon roller is mounted in the lower ear seat via bearings; one end of the tie rod is hinged to the side wall of the lower ear seat via a pin, and the other end of the tie rod is connected to the side wall of the support via connecting bolts.

[0007] Furthermore, the supports are symmetrically arranged at both ends of the fixing frame, and the supports are U-shaped.

[0008] Furthermore, the side wall of the support is provided with a waist-shaped hole, and one end of the diagonal tie rod is connected to the waist-shaped hole by a connecting bolt.

[0009] Furthermore, the upper ear seat is provided with a first slot, and one end of the torsion spring is engaged in the first slot.

[0010] Furthermore, the lower ear seat is provided with a second slot, and the other end of the torsion spring is engaged in the second slot.

[0011] Furthermore, the nylon rollers are triangularly distributed and have grooves on them.

[0012] Compared with the prior art, the present invention provides a stretching mechanism for carbon fiber tow, which has the following advantages:

[0013] The carbon fiber tow uses a tensioning mechanism. The tow passes through a conveyor roller assembly on one side and flows out from the conveyor roller assembly on the other side after soaking and carbonization. The lower ear is hinged to the upper ear by a pin, and the lower ear is connected to the support by a tie rod. The tie rod is movably connected to the support by a connecting bolt. The torsion spring can provide elastic preload, so that the tow can maintain appropriate tension in the process of soaking and carbonization with the cooperation of the torsion spring and the tie rod, thus ensuring the production efficiency of carbon fiber. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a structural diagram of the conveyor roller assembly of this utility model;

[0016] Figure 3 This is a partial side view of the conveyor roller assembly of this utility model.

[0017] In the diagram: 1. Fixed frame; 2. Conveyor roller assembly; 21. Support; 22. Idler roller; 23. Fixed plate; 24. Upper ear seat; 25. Pin shaft; 26. Torsion spring; 27. Lower ear seat; 28. Nylon roller; 29. ​​Diagonal tie rod; 210. Connecting bolt; 211. Waist-shaped hole; 212. First slot; 213. Second slot; 214. Trough. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figures 1-3 This utility model discloses a tensioning mechanism for carbon fiber tow, including a fixed frame 1, on which a conveying roller assembly 2 is installed. The tow passes through the conveying roller assembly 2 on one side and flows out from the conveying roller assembly 2 on the other side after soaking and carbonization. The lower ear seat 27 is hinged to the upper ear seat 24 by a pin 25. At the same time, the lower ear seat 27 is connected to the support 21 by a diagonal tie rod 29. The diagonal tie rod 29 is movably connected to the support 21 by a connecting bolt 210. The provided torsion spring 26 can provide elastic preload, so that the tow can maintain appropriate tension under the cooperation of the torsion spring 26 and the diagonal tie rod 29 during the soaking and carbonization process, thus ensuring the production efficiency of carbon fiber.

[0020] The conveyor roller assembly 2 includes a support 21, an idler roller 22, a fixing plate 23, an upper lug 24, a pin 25, a torsion spring 26, a lower lug 27, a nylon roller 28, a tie rod 29, and connecting bolts 210. The idler roller 22 is mounted on the lower part of the support 21 via bearings. The fixing plate 23 is mounted on the top of the support 21 via screws. The upper lug 24 is mounted on the fixing plate 23 via screws. The lower lug 27 is hinged to the upper lug 24 via the pin 25. The torsion spring 26 is fitted onto the pin 25, and both ends of the torsion spring 26 are respectively engaged with the lower lug 27 and the upper lug 24. The nylon roller 28 is mounted in the lower lug 27 via bearings. One end of the tie rod 29 is hinged to the side wall of the lower lug 27 via a pin, and the other end of the tie rod 29 is connected to the side wall of the support 21 via connecting bolts 210.

[0021] Specifically, the supports 21 are symmetrically arranged at both ends of the fixed frame 1, and the supports 21 are U-shaped.

[0022] In this embodiment, the support 21 serves as a support, the filaments pass through the conveyor roller assembly 2 on one side, and flow out from the conveyor roller assembly 2 on the other side after soaking and carbonization.

[0023] Specifically, the side wall of the support 21 is provided with a waist-shaped hole 211, and one end of the diagonal tie rod 29 is connected to the waist-shaped hole 211 by a connecting bolt 210.

[0024] In this embodiment, the waist-shaped hole 211 makes the diagonal tie rod 29 and the support 21 movably connected, leaving a certain rebound space. During the process of the torsion spring 26 storing and releasing energy by elastic deformation, the nylon roller 28 on the lower ear seat 27 can maintain elastic tension, thereby providing elastic preload.

[0025] Specifically, the upper ear seat 24 is provided with a first slot 212, and one end of the torsion spring 26 is engaged in the first slot 212.

[0026] In this embodiment, the first slot 212 is a connecting structure used to lock one end of the torsion spring 26 onto the upper ear seat 24.

[0027] Specifically, the lower ear seat 27 is provided with a second slot 213, and the other end of the torsion spring 26 is engaged in the second slot 213.

[0028] In this embodiment, the second slot 213 is a connecting structure used to lock the other end of the torsion spring 26 onto the lower ear seat 27.

[0029] Specifically, the nylon rollers 28 are triangularly distributed, and the nylon rollers 28 are provided with grooves 214.

[0030] In this implementation plan, such as Figure 2 As shown, the filament bundle passes through the idler roller 22 and the nylon roller 28 in sequence, and then undergoes soaking and carbonization treatment. The groove 214 mainly plays a guiding role to ensure that the filament bundle does not slip during transmission.

[0031] In use, the filament bundle passes through the conveyor roller assembly 2 on one side and flows out from the conveyor roller assembly 2 on the other side after soaking and carbonization. The lower ear seat 27 is hinged to the upper ear seat 24 by the pin 25. At the same time, the lower ear seat 27 is connected to the support 21 by the diagonal tie rod 29. The diagonal tie rod 29 is movably connected to the support 21 by the connecting bolt 210. The torsion spring 26 can provide elastic preload, so that the filament bundle can maintain appropriate tension in the process of soaking and carbonization with the cooperation of the torsion spring 26 and the diagonal tie rod 29, thus ensuring the production efficiency of carbon fiber.

[0032] In summary, this carbon fiber tow uses a tensioning mechanism. The tow passes through the conveyor roller assembly 2 on one side and flows out from the conveyor roller assembly 2 on the other side after soaking and carbonization. The lower ear seat 27 is hinged to the upper ear seat 24 via a pin 25. At the same time, the lower ear seat 27 is connected to the support 21 via a diagonal tie rod 29. The diagonal tie rod 29 is movably connected to the support 21 via a connecting bolt 210. The torsion spring 26 can provide elastic preload, so that the tow can maintain appropriate tension in the process of soaking and carbonization with the cooperation of the torsion spring 26 and the diagonal tie rod 29, thus ensuring the production efficiency of carbon fiber.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tensioning mechanism for carbon fiber tow, comprising a fixing frame (1), characterized in that: The fixed frame (1) is equipped with a conveyor roller assembly (2); The conveyor roller assembly (2) includes a support (21), an idler roller (22), a fixing plate (23), an upper lug (24), a pin (25), a torsion spring (26), a lower lug (27), a nylon roller (28), a tie rod (29), and connecting bolts (210). The idler roller (22) is mounted on the lower part of the support (21) by bearings. The fixing plate (23) is mounted on the top of the support (21) by screws. The upper lug (24) is mounted on the fixing plate (23) by screws. The lower lug... The seat (27) is hinged to the upper ear seat (24) via a pin (25). The torsion spring (26) is fitted onto the pin (25), and both ends of the torsion spring (26) are respectively engaged with the lower ear seat (27) and the upper ear seat (24). The nylon roller (28) is installed in the lower ear seat (27) via a bearing. One end of the diagonal tie rod (29) is hinged to the side wall of the lower ear seat (27) via a pin, and the other end of the diagonal tie rod (29) is connected to the side wall of the support (21) via a connecting bolt (210).

2. The carbon fiber tow tensioning mechanism according to claim 1, characterized in that: The supports (21) are symmetrically arranged at both ends of the fixing frame (1), and the supports (21) are U-shaped.

3. The carbon fiber tow tensioning mechanism according to claim 1, characterized in that: The support (21) has a waist-shaped hole (211) on its side wall, and one end of the diagonal tie rod (29) is connected to the waist-shaped hole (211) by a connecting bolt (210).

4. The carbon fiber tow tensioning mechanism according to claim 1, characterized in that: The upper ear seat (24) is provided with a first slot (212), and one end of the torsion spring (26) is engaged in the first slot (212).

5. The carbon fiber tow tensioning mechanism according to claim 1, characterized in that: The lower ear seat (27) is provided with a second slot (213), and the other end of the torsion spring (26) is engaged in the second slot (213).

6. The carbon fiber tow tensioning mechanism according to claim 1, characterized in that: The nylon rollers (28) are triangularly distributed and have grooves (214) on them.

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