Carbon fiber low-temperature carbonization device

Abstract

The utility model provides a carbon fiber low-temperature carbonization device which comprises a low-temperature carbonization furnace, a fiber inlet and a fiber outlet are formed in the two ends of the low-temperature carbonization furnace respectively, a guide rail distributed in an inclined mode is arranged in the low-temperature carbonization furnace, the inclined upper portion of the guide rail penetrates out of the fiber outlet, and the inclined lower portion of the guide rail penetrates out of the fiber inlet. A traction block which is in sliding connection with the guide rail and used for pulling broken wires is arranged on the guide rail, the traction block is connected with a traction mechanism capable of driving the traction block to move towards the wire outlet at a constant speed, and the traction block can move towards the wire inlet according to the gravity of the traction block. When the broken filaments penetrate through the low-temperature carbonization furnace, operation is convenient and fast, after the traction block moves at the constant speed, the carbon fiber filaments are evenly stressed, and the problem that the carbon fiber filaments are prone to being snapped due to the fact that the carbon fiber filaments are excessively stressed can be solved.

Description

Technical Field

[0001] This application relates to carbon fiber carbonization technology, and more particularly to a carbon fiber low-temperature carbonization apparatus. Background Technology

[0002] In the carbon fiber production process, after pre-oxidation treatment, the carbon fiber precursor needs to undergo low-temperature carbonization in a low-temperature carbonization furnace. During the low-temperature carbonization process, fiber breakage can easily occur due to improper operation or equipment failure. When fiber breakage occurs, the carbon fiber filament needs to be re-passed through the low-temperature carbonization furnace.

[0003] Currently, one existing method of threading carbon fibers involves connecting a nickel-chromium wire to a broken wire, then manually threading the nickel-chromium wire through a low-temperature carbonization furnace. The nickel-chromium wire then pulls the carbon fiber through the furnace. However, this method is not only time-consuming and labor-intensive, but the uneven stress on the carbon fiber can easily occur when the nickel-chromium wire pulls it. When the stress on the carbon fiber is too great, it is prone to breakage. Utility Model Content

[0004] This application provides a carbon fiber low-temperature carbonization device to solve the problems of time-consuming and laborious threading after fiber breakage in existing carbon fiber low-temperature carbonization furnaces, and the easy breakage of carbon fiber filaments.

[0005] This application provides a carbon fiber low-temperature carbonization device, including a low-temperature carbonization furnace, wherein the two ends of the low-temperature carbonization furnace are respectively provided with a fiber inlet and a fiber outlet;

[0006] The interior of the low-temperature carbonization furnace is provided with inclined guide rails, with the upper part of the guide rails passing through the wire outlet and the lower part of the guide rails passing through the wire inlet.

[0007] The guide rail is provided with a traction block that is slidably connected to it and used to pull the broken wire.

[0008] The traction block is connected to a traction mechanism that can drive it to move at a constant speed toward the yarn outlet, and the traction block can move toward the yarn inlet according to its own gravity.

[0009] Optionally, the traction mechanism includes a housing fixedly connected to the yarn outlet, a rotatable take-up roller inside the housing, a self-locking motor connected to the take-up roller that can drive it to rotate, a traction rope wound on the take-up roller, and the two ends of the traction rope being fixedly connected to the take-up roller and the traction block, respectively.

[0010] Optionally, the guide rail is a cylindrical tube structure, and the lower end of the guide rail has a through groove that is distributed along its axial direction and penetrates through the low-temperature carbonization furnace. The upper inclined end of the through groove is provided with a guide wheel.

[0011] The traction block is sleeved on the guide rail and extends through the through groove into the interior of the guide rail;

[0012] The traction rope passes around the guide wheel, extends into the interior of the guide rail, and is fixedly connected to the traction block located inside the guide rail.

[0013] Optionally, the traction block includes a sleeve, a connecting ring for connecting with the broken wire is fixed on the outer wall of the sleeve, and a counterweight is fixed at the lower end of the inner wall of the sleeve.

[0014] The sleeve is fitted onto the guide rail and slidably connected to the guide rail. The counterweight passes through the through groove and extends into the interior of the guide rail. Both sides of the counterweight are in contact with the through groove and slidably connected.

[0015] Optionally, the lower inclined end of the guide rail is fixedly connected to the wire inlet via a bracket, and the upper inclined end of the guide rail is fixedly connected to the housing via a connecting lug.

[0016] Optionally, the traction rope, guide rail, and traction block are all made of nickel-chromium metal.

[0017] Optionally, the guide rail is parallel to the low-temperature carbonization furnace, and the low-temperature carbonization furnace is inclined, with the wire inlet lower than the wire outlet.

[0018] Compared with the prior art, the beneficial effects of this application are as follows:

[0019] The carbon fiber low-temperature carbonization device provided in this application has an inlet and an outlet at both ends of the low-temperature carbonization furnace. The furnace interior has inclined guide rails, with the upper part of the guide rails extending from the outlet and the lower part from the inlet. A traction block, slidably connected to the guide rail and used to pull broken fibers, is mounted on the guide rail. The traction block is connected to a traction mechanism that drives it to move uniformly towards the outlet. The traction block can move towards the inlet according to its own weight, so that after a fiber breakage occurs, the traction block is first moved to the lower part of the guide rail, i.e.,... Move the traction block to the side of the inlet, then tie the broken wire to the traction block. Next, the traction mechanism drives the traction block to move at a constant speed along the guide rail towards the wire outlet. The traction block drives the broken wire to move synchronously and at a constant speed. When the traction block moves to the side of the wire outlet, the broken wire is passed through the low-temperature carbonization furnace. Compared with the existing wire threading method, the wire threading work can be completed simply by moving the traction block along the guide rail. This is not only convenient to operate, but also ensures that the carbon fiber is evenly stressed after the traction block moves at a constant speed, which can avoid the problem of the carbon fiber being easily broken due to excessive stress. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the main structure of the carbon fiber low-temperature carbonization device provided in the embodiments of this application;

[0022] Figure 2 A partial front view cross-sectional view of the traction block of the carbon fiber low-temperature carbonization device provided in this application embodiment, located on the side of the fiber outlet.

[0023] Figure 3 A partial front view cross-sectional view of the traction block of the carbon fiber low-temperature carbonization device provided in this application embodiment, located on the side of the inlet.

[0024] Figure 4 A partial three-dimensional structural schematic diagram of the carbon fiber low-temperature carbonization device provided in the embodiments of this application;

[0025] Figure 5 This is a partial side view cross-sectional structural diagram of the traction mechanism of the carbon fiber cryogenic carbonization device provided in the embodiments of this application.

[0026] Explanation of reference numerals in the attached drawings: 1. Low-temperature carbonization furnace; 2. Wire inlet; 3. Wire outlet; 4. Guide rail; 401. Through groove; 5. Traction block; 5. Sleeve; 501. Connecting ring; 502. Counterweight; 503. Traction mechanism; 6. Housing; 601. Take-up roller; 602. Self-locking motor; 603. Traction rope; 604. Mounting frame; 7. Guide wheel; 8. Bracket; 9. Connecting lug; 10. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application are described clearly and completely below. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are also within the scope of protection of this application.

[0028] like Figures 1-5 As shown:

[0029] An embodiment of this application provides a carbon fiber low-temperature carbonization apparatus, including a low-temperature carbonization furnace 1. The low-temperature carbonization furnace 1 is used to perform low-temperature carbonization treatment on carbon fiber filaments. The low-temperature carbonization furnace 1 has an inlet 2 and an outlet 3 at both ends. Specifically, both the inlet 2 and the outlet 3 include a cavity that extends through the left and right sides, and a gas sealing device is provided in the cavity.

[0030] In this embodiment, both the low-temperature carbonization furnace 1 and the gas sealing device are existing technologies and will not be described in detail.

[0031] The interior of the low-temperature carbonization furnace 1 is fixed with inclined guide rails 4, with the upper part of the guide rails 4 passing through the wire outlet 3 and the lower part of the guide rails 4 passing through the wire inlet 2.

[0032] The guide rail 4 is provided with a traction block 5 that is slidably connected to it and used to pull the broken wire.

[0033] The traction block 5 is connected to a traction mechanism 6 that can drive it to move at a constant speed toward the wire outlet 3, and the traction block 5 can move toward the wire inlet 2 according to its own gravity.

[0034] When a wire breaks, the traction block 5 is first moved along the guide rail 4 at its lower end by its own weight, that is, the traction block 5 is moved to the left side of the wire inlet 2. Then the broken wire is tied to the traction block 5. Then the traction mechanism 6 drives the traction block 5 to move along the wire outlet 3 on the guide rail 4 at a uniform speed. The traction block 5 drives the broken wire to move synchronously and at a uniform speed. When the traction block 5 moves to the right side of the wire outlet 3, the broken wire is passed through the low temperature carbonization furnace 1.

[0035] The carbon fiber low-temperature carbonization device provided in this embodiment has an inclined guide rail 4 inside the low-temperature carbonization furnace 1. The guide rail 4 is equipped with a traction block 5 that is slidably connected to it and used to pull the broken wire. The traction block 5 is connected to a traction mechanism 6 that can drive it to move at a constant speed towards the wire outlet 3. The traction block 5 can move towards the wire inlet 2 according to its own gravity. So that after the wire breaks, the wire threading work can be completed simply by moving the traction block 5 along the guide rail 4. This is not only convenient to operate, but also ensures that the carbon fiber is evenly stressed after the traction block 5 moves at a constant speed. This can avoid the problem that the carbon fiber is easily broken due to excessive stress.

[0036] In some embodiments of this application, the traction mechanism 6 includes a housing 601 fixedly connected to the yarn outlet 3, and a rotatable take-up roller 602 is provided inside the housing 601.

[0037] Specifically, a mounting bracket 7 is fixed at the lower end of the filament outlet 3, the housing 601 is fixedly connected to the mounting bracket 7, and both ends of the take-up roller 602 are rotatably connected to the housing 601 through bearings.

[0038] The take-up roller 602 is connected to a self-locking motor 603 that can drive it to rotate. Specifically, the self-locking motor 603 is fixed on the outer wall of the housing 601, and the output shaft of the self-locking motor 603 is fixedly connected to the take-up roller 602.

[0039] A traction rope 604 is wound around the take-up roller 602, and the two ends of the traction rope 604 are fixedly connected to the take-up roller 602 and the traction block 5, respectively.

[0040] In this embodiment, after the self-locking motor 603 rotates forward, the winding roller 602 winds up the traction rope 604, and the self-locking motor 603 rotates in reverse to release the traction rope 604.

[0041] In operation, the self-locking motor 603 reverses, the take-up roller 602 rotates to release the traction rope 604, and the traction block 5 moves downward along the guide rail 4 under its own weight, that is, it moves towards the wire inlet 2. When the self-locking motor 603 rotates forward, the take-up roller 602 rotates to wind up the traction rope 604, and the traction rope 604 pulls the traction block 5 towards the wire outlet 3. Thus, by simply controlling the self-locking motor 603 to reverse and then rotate it forward, the broken wire can be passed through the low-temperature carbonization furnace 1. Moreover, when not performing wire passing, the traction block 5 and the traction rope 604 can be removed from the low-temperature carbonization furnace 1 to prevent them from being affected by temperature for a long time inside the furnace and reducing their service life.

[0042] In some embodiments of this application, the guide rail 4 is a cylindrical tube structure, and the lower end of the guide rail 4 has a through groove 401 that is distributed along its axial direction and penetrates through the low-temperature carbonization furnace 1. The upper inclined end of the through groove 401 is provided with a guide wheel 8. Specifically, the guide wheel 8 is rotatably connected to a mounting shaft through a bearing, and the mounting shaft is fixed inside the guide rail 4.

[0043] The traction block 5 is fitted onto the guide rail 4 and extends through the through groove 401 into the interior of the guide rail 4.

[0044] The traction rope 604 extends around the guide wheel 8 into the interior of the guide rail 4 and is fixedly connected to the traction block 5 located inside the guide rail 4, so that the traction rope 604 can move inside the guide rail 4, thereby protecting the traction rope 604.

[0045] In some embodiments of this application, the traction block 5 includes a sleeve 501, and a connecting ring 502 for connecting with the broken wire is fixed on the outer wall of the sleeve 501. The broken wire is tied to the connecting ring 502 by knotting.

[0046] A counterweight 503 is fixed to the lower end of the inner wall of the sleeve 501 to increase the weight of the traction block 5, so that the traction block 5 can move smoothly towards the wire inlet 2 according to its own gravity.

[0047] The sleeve 501 is fitted onto the guide rail 4 and slidably connected to the guide rail 4. The counterweight 503 passes through the through groove 401 and extends into the interior of the guide rail 4. Both sides of the counterweight 503 are in contact with and slidably connected to the through groove 401, thereby realizing the sliding connection between the traction block 5 and the guide rail 4. The traction rope 604 is fixedly connected to the counterweight 503.

[0048] In use, after the traction block 5 moves towards the wire inlet 2 under its own weight, the lower inclined end of the through groove 401 can limit the counterweight block 503. That is, after the traction block 5 moves to the lower inclined end of the through groove 401 under its own weight, it can automatically stop moving. After both sides of the counterweight block 503 are in contact with the through groove 401, it can prevent the counterweight block 503 from moving radially in the guide rail 4. In other words, it can ensure that the traction block 5 can only move along the axial direction of the guide rail 4, thereby improving the stability of the traction block 5 when pulling a broken wire.

[0049] In some embodiments of this application, the lower end of the guide rail 4 is fixedly connected to the wire inlet 2 via the bracket 9, and the upper end of the guide rail 4 is fixedly connected to the housing 601 via the connecting lug 10, thereby fixing the guide rail 4.

[0050] In some embodiments of this application, considering the high-temperature resistance of nickel-chromium metal, the traction rope 604, guide rail 4, and traction block 5 are all made of nickel-chromium metal. Specifically, the traction rope 604 is made of nickel-chromium metal wire.

[0051] In some embodiments of this application, the guide rail 4 is parallel to the low-temperature carbonization furnace 1, the low-temperature carbonization furnace 1 is inclined, and the wire inlet 2 is lower than the wire outlet 3. This not only achieves the inclined distribution of the guide rail 4, but also ensures that the low-temperature carbonization furnace 1 is inclined and the wire inlet 2 is lower than the wire outlet 3. This ensures the inert atmosphere of the low-temperature carbonization furnace 1 while maintaining a certain flow direction of the airflow inside the furnace, thereby reducing the generation of slag inside the low-temperature carbonization furnace 1.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A carbon fiber low-temperature carbonization device, comprising a low-temperature carbonization furnace (1), the low-temperature carbonization furnace (1) is provided with an inlet port (2) and an outlet port (3) at both ends respectively, characterized in that: the inside of the low-temperature carbonization furnace (1) is provided with an inclined distribution guide rail (4), and the upper inclined part of the guide rail (4) passes out of the outlet port (3), and the lower inclined part of the guide rail (4) passes out of the inlet port (2); the guide rail (4) is provided with a traction block (5) connected therewith and used for pulling the broken wire; the traction block (5) is connected with a traction mechanism (6) capable of moving it at a constant speed to the outlet port (3), and the traction block (5) can move to the inlet port (2) according to its own gravity.

2. The carbon fiber low temperature carbonization device of claim 1, wherein: the traction mechanism (6) comprises a housing (601) fixedly connected with the outlet port (3), the inside of the housing (601) is provided with a rotatable winding roller (602), the winding roller (602) is connected with a self-locking motor (603) capable of driving it to rotate, the winding roller (602) is wound with a traction rope (604), and both ends of the traction rope (604) are fixedly connected with the winding roller (602) and the traction block (5) respectively.

3. The carbon fiber low temperature carbonization apparatus of claim 2, wherein: the guide rail (4) is a cylindrical tube structure, the lower end of the guide rail (4) is provided with a through groove (401) distributed along the axial direction and penetrating through the low-temperature carbonization furnace (1), and the upper inclined end of the through groove (401) is provided with a guide wheel (8); the traction block (5) is sleeved on the guide rail (4) and extends to the inside of the guide rail (4) through the through groove (401); the traction rope (604) extends to the inside of the guide rail (4) through the guide wheel (8) and is fixedly connected with the traction block (5) located in the inside of the guide rail (4).

4. The carbon fiber low temperature carbonization apparatus of claim 3, wherein: the traction block (5) comprises a sleeve (501), the outer wall of the sleeve (501) is fixedly provided with a connecting ring (502) used for connecting with the broken wire, and the inner wall of the sleeve (501) is fixedly provided with a counterweight (503) at the lower end; the sleeve (501) is sleeved on the guide rail (4) and is in sliding connection with the guide rail (4), the counterweight (503) extends to the inside of the guide rail (4) through the through groove (401), and both sides of the counterweight (503) are in contact with and in sliding connection with the through groove (401).

5. The carbon fiber low temperature carbonization device of claim 2, wherein: the lower inclined end of the guide rail (4) is fixedly connected with the inlet port (2) through a support (9), and the upper inclined end of the guide rail (4) is fixedly connected with the housing (601) through a connecting lug (10).

6. The carbon fiber low temperature carbonization device of claim 4, wherein: the traction rope (604), the guide rail (4) and the traction block (5) are all made of nickel-chromium metal material.

7. The carbon fiber low temperature carbonization apparatus according to any one of claims 1 to 6, characterized by: the guide rail (4) is parallel to the low-temperature carbonization furnace (1), the low-temperature carbonization furnace (1) is in inclined distribution, and the inlet port (2) is lower than the outlet port (3).

Images