Carbon fiber sizing device

Abstract

The utility model provides a carbon fiber sizing device which comprises a box body, one end of the top of the box body is rotationally connected with a yarn releasing roller, the other end of the top of the box body is rotationally connected with a yarn collecting roller, a yarn inlet hole is vertically formed in the top wall of the box body below the yarn releasing roller and the yarn collecting roller, and carbon fiber yarns can penetrate through the yarn inlet hole and enter and exit from the box body; an air inlet valve is mounted at the top of the box body and is communicated with an air compressor. According to the carbon fiber sizing device, distributed carbon fiber yarns entering the box body through the yarn inlet holes are immersed in epoxy resin emulsion for sizing treatment, air pressure in the box body can be increased by injecting air into the box body through the air compressor and the air inlet valve, so that the epoxy resin emulsion can permeate into fibers of the carbon fiber yarns more quickly, and the sizing effect is improved. The sizing efficiency is improved, meanwhile, the epoxy resin emulsion can permeate into the deeper layer of the carbon fibers through pressurization, and the sizing effect on the interiors of the carbon fibers is improved.

Description

Technical Field

[0001] This application relates to carbon fiber sizing technology, and more particularly to a carbon fiber sizing device. Background Technology

[0002] During the production process, carbon fiber filaments undergo oxidation, carbonization, and cleaning before entering the sizing process. Sizing is mainly used to improve the performance and quality of carbon fiber, enhance the bonding force between carbon fiber filaments, and thus improve the wear resistance and corrosion resistance of carbon fiber products.

[0003] Existing carbon fiber sizing equipment involves feeding carbon fiber filaments into a tank containing epoxy resin emulsion via feed rollers and reversing rollers, sizing the filaments through natural immersion. After sizing, the filaments are exited from the tank via take-up rollers to remove excess emulsion. However, existing carbon fiber sizing equipment suffers from poor epoxy resin emulsion flowability, making it difficult to sizing the interior of the carbon fiber filaments. Furthermore, the slow sizing speed results in low production efficiency. Utility Model Content

[0004] This application provides a carbon fiber sizing device to solve the problem that existing carbon fiber sizing devices are unable to sizing the inside of carbon fiber filaments.

[0005] This application provides a carbon fiber sizing device, including a housing. A feeding roller is rotatably connected to one end of the top of the housing, and a take-up roller is rotatably connected to the other end. A wire inlet hole is vertically provided on the top wall of the housing below the feeding roller and the take-up roller. The wire inlet hole can accommodate carbon fiber filaments to pass through and enter and exit the housing, and the wire inlet hole can be closed when the air pressure inside the housing increases. A reversing roller is rotatably connected inside the housing, and an air inlet valve is installed on the top of the housing. The air inlet valve is connected to an air compressor.

[0006] Optionally, the housing is provided with a collar fitted onto the carbon fiber filament below the take-up roller, and a scraper that fits against the carbon fiber filament is fixed at the lower end of the collar.

[0007] Optionally, an oven is fixed to the top of the box, and a hot air blower is installed inside the oven. The carbon fiber filaments output from the box pass through the oven and are connected to the take-up roller.

[0008] Optionally, the upper part of the box is provided as a detachable cover, and the cover and the lower part of the box can be sealed and fixed together by a connector.

[0009] The carbon fiber sizing device provided in this application immerses distributed carbon fiber filaments, which enter the chamber through the inlet hole, into an epoxy resin emulsion for sizing. Injecting air into the chamber via an air compressor through the inlet valve increases the air pressure inside the chamber, allowing the epoxy resin emulsion to penetrate the carbon fiber filaments more quickly, thus improving sizing efficiency. Simultaneously, the pressurization also allows the epoxy resin emulsion to penetrate deeper into the carbon fiber filaments, enhancing the sizing effect within the carbon fiber. Attached Figure Description

[0010] 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.

[0011] Figure 1 This is a front view of a carbon fiber sizing apparatus provided in an embodiment of this application;

[0012] Figure 2 A carbon fiber sizing apparatus provided in an embodiment of this application Figure 1 Top view;

[0013] Figure 3 A carbon fiber sizing apparatus provided in an embodiment of this application Figure 1 A sectional view;

[0014] Figure 4 A carbon fiber sizing apparatus provided in an embodiment of this application Figure 2 A sectional view;

[0015] Figure 5 This is an enlarged schematic diagram of point A of the carbon fiber sizing device provided in an embodiment of this application.

[0016] Explanation of reference numerals in the attached figures:

[0017] Box body 1; feeding roller 2; feeding hole 3; reversing roller 4; taking roller 5; air inlet valve 6; collar 7; scraper 8; drying oven 9; hot air blower 10; connector 11; carbon fiber filament 12. Detailed Implementation

[0018] 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.

[0019] like Figures 1-4 As shown, one embodiment of this application provides a carbon fiber sizing device, including a housing 1. A feeding roller 2 is rotatably connected to one end of the top of the housing 1, and a take-up roller 5 is rotatably connected to the other end. The device is characterized in that: a wire inlet hole 3 is vertically provided on the top wall of the housing 1 below the feeding roller 2 and the take-up roller 5. The wire inlet hole 3 can accommodate carbon fiber filaments 12 to pass through and enter and exit the housing 1. A reversing roller 4 is rotatably connected inside the housing 1. An air inlet valve 6 is installed on the top of the housing 1, and the air inlet valve 6 is connected to an air compressor.

[0020] During use, the housing 1 contains epoxy resin emulsion, with a gap between the emulsion surface and the air inlet valve 6. Carbon fiber filaments 12 are guided downwards by the feed roller 2, passing through the feed hole 3 at their lower end into the housing 1. After being folded back along the reversing roller 4, they pass upwards through the feed hole 3 at the lower end of the take-up roller 5 and are then exited through the take-up roller 5. Air is then injected into the housing 1 through the air inlet valve 6 via an air compressor, increasing the air pressure inside the housing 1 and allowing the epoxy resin emulsion to quickly penetrate into the fibers of the carbon fiber filaments 12. The air intake of the air inlet valve 6 is greater than the leakage of the feed hole 3, which is negligible. After partially sizing the carbon fiber filaments 12, the air compressor is paused, and the housing 1 is depressurized. The sized section is then removed from the housing 1 via a conveyor, and the sizing process is repeated for the subsequent sections of the carbon fiber filaments 12.

[0021] In this embodiment, a portion of the carbon fiber filaments 12 entering the housing 1 through the inlet hole 3 are immersed in the epoxy resin emulsion for sizing. Injecting air into the housing 1 via the air inlet valve 6 using an air compressor increases the air pressure inside the housing 1, allowing the epoxy resin emulsion to penetrate the carbon fiber filaments 12 more quickly, thus improving sizing efficiency. Simultaneously, the increased pressure also allows the epoxy resin emulsion to penetrate deeper into the carbon fiber filaments 12, enhancing the sizing effect within the fibers.

[0022] like Figure 4 and Figure 5 As shown, in one possible implementation, a collar 7 is provided inside the housing 1 below the take-up roller 5, and is fitted onto the carbon fiber filament 12. A scraper 8, which is in contact with the carbon fiber filament 12, is fixed to the lower end of the collar 7. The scraper 8 is located above the surface of the epoxy resin emulsion.

[0023] The collar 7 is fitted onto the carbon fiber filament 12. As the sized carbon fiber filament 12 moves out of the housing 1 from the inlet hole 3, the excess epoxy resin emulsion is scraped off by the scraper 8 that is attached to it.

[0024] In one possible implementation, an oven 9 is fixed to the top of the housing 1, and a hot air blower 10 is installed inside the oven 9. The carbon fiber filaments 12 output from the housing 1 pass through the oven 9 and are connected to the take-up roller 5.

[0025] The carbon fiber filaments 12, after the excess epoxy resin emulsion is scraped off by the scraper 8, pass upward through the inlet hole 3 and enter the drying oven 9. The carbon fiber filaments 12 in the drying oven 9 are dried by the hot air blower 10.

[0026] In one possible implementation, the upper part of the box 1 is provided as a detachable cover, and the cover and the lower part of the box 1 can be sealed and fixed by a connector 11.

[0027] The upper part of the housing 1 is a cover that can be detachably connected to the lower part and is sealed and fixed by the connector 11. When the cover is closed and fixed, the seal does not affect the air intake and pressurization. When opened, it is convenient to clean and maintain the inside of the housing.

[0028] 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 it. 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 sizing device, comprising a housing (1), wherein a feeding roller (2) is rotatably connected to one end of the top of the housing (1), and a take-up roller (5) is rotatably connected to the other end, characterized in that: The top wall of the box (1) below the feeding roller (2) and the taking roller (5) is vertically provided with a wire inlet hole (3). The wire inlet hole (3) can accommodate the carbon fiber filament (12) to pass through and enter and exit the box (1). A reversing roller (4) is rotatably connected inside the box (1). An air inlet valve (6) is installed on the top of the box (1). The air inlet valve (6) is connected to an air compressor.

2. The carbon fiber sizing device according to claim 1, characterized in that: Inside the housing (1), below the take-up roller (5), there is a collar (7) sleeved on the carbon fiber filament (12), and the lower end of the collar (7) is fixed with a scraper (8) that fits against the carbon fiber filament (12).

3. The carbon fiber sizing device according to claim 2, characterized in that: An oven (9) is fixed to the top of the box (1). A hot air blower (10) is installed inside the oven (9). The carbon fiber filament (12) output from the box (1) passes through the oven (9) and is connected to the take-up roller (5).

4. The carbon fiber sizing apparatus according to any one of claims 1-3, characterized in that: The upper part of the box (1) is provided with a detachable cover, and the cover and the lower part of the box (1) can be sealed and fixed by a connector (11).

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