Uniform sizing device for carbon fiber tows

Abstract

The utility model discloses a uniform sizing device for carbon fiber tows, which comprises a sizing tank and a plurality of guide rollers, slurry is stored in the sizing tank, the carbon fiber tows are transmitted among the guide rollers in a tiled manner, part of the guide rollers are immersed below the liquid level of the slurry for sizing, and a plurality of yarn guide grooves are axially distributed on the outer sides of the guide rollers; a pulp wiping roller is arranged on the lower side of the tow guided out from the guide roller at the sizing tail end, a plurality of pulp wiping sponges are fixed to the outer ring of the pulp wiping roller in the axial direction, the pulp wiping sponges on the top of the pulp wiping roller abut against the lower side of the tow, and the pulp wiping sponges on the side face of the pulp wiping roller abut against the guide roller at the tail end. The sizing agent content of the carbon fiber tows can be accurately regulated and controlled, the uniformity of the sizing agent content between the tows is effectively improved, the sizing agent deviation of the tows in the long range is reduced, and finally the quality of the carbon fiber tows is stable and controllable.

Description

Technical Field

[0001] The utility model relates to a carbon fiber tow uniform sizing device, belonging to the technical field of carbon fiber sizing. Background Art

[0002] Carbon fiber is a new non-metallic material with a carbon content of over 93%. It boasts exceptional properties such as lightweight, high strength, high modulus, high-temperature resistance, and corrosion resistance. With industrial development, it is widely used in the automotive, sports and leisure equipment, medical device, and even in aerospace, defense, and military fields. In industrial carbon fiber production, the production line is a linear, continuous model. Lines typically range from 300 to 500 meters in length and 0.5 to 4 meters in width. 50 to 600 tows can be run simultaneously within this width. Prior to forming, the tows require sizing to ensure bundledness and wear resistance, thereby improving downstream processability.

[0003] When carbon fiber is sizing, the tow passes through the sizing tank and is then discharged. After dipping, the tow often has excess sizing agent attached to it, resulting in uneven sizing. Existing sizing equipment generally installs a pressure roller at the outlet of the sizing tank to squeeze the sized tow and squeeze out the excess sizing agent. However, with this sizing method, the sizing agent squeezed out from the pressure roller cannot be drained away in time, and some of the squeezed sizing agent returns to the tow. Moreover, during the transmission process after sizing, it is easy to accumulate on the tow, resulting in uneven sizing.

[0004] In summary, the existing technology has obvious inconveniences and defects in actual use, so it is necessary to improve it. Utility Model Content

[0005] In response to the deficiencies in the background technology, the utility model provides a device for uniformly sizing carbon fiber tows, which can accurately control the sizing agent content of the carbon fiber tows, effectively improve the uniformity of the sizing content between the tows, reduce the sizing deviation of the tows over a long range, and ultimately make the quality of the carbon fiber tows stable and controllable.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] A device for uniformly sizing carbon fiber tows comprises a sizing tank and a plurality of guide rollers. The sizing tank contains sizing liquid, and the carbon fiber tows are flatly transmitted between the plurality of guide rollers, wherein some of the guide rollers are immersed below the sizing liquid surface for sizing. The outer sides of the guide rollers are provided with a plurality of guide grooves arranged axially.

[0008] A wiping roller is provided on the lower side of the filament bundle after being guided out from the guide roller at the end of sizing. A plurality of wiping sponges are fixed axially on the outer ring of the wiping roller. The wiping sponges on the top of the wiping roller are close to the lower side of the filament bundle, and the wiping sponges on the side of the wiping roller are close to the guide roller at the end.

[0009] Furthermore, the outer ring of the wiping roller is provided with four wiping sponges, the top wiping sponge is close to the filament bundle, and the side wiping sponges are facing the side of the guide roller at the end.

[0010] Furthermore, the outer ring of the wiping roller is provided with evenly distributed installation grooves, the wiping sponge is installed in the installation grooves, and both sides of the outer end of the installation groove are provided with blocking parts extending inward, and the two sides of the wiping sponge are correspondingly provided with grooves, and the grooves cooperate with the blocking parts.

[0011] Furthermore, both ends of the wiping roller are rotatably mounted on a support frame, a ratchet is fixed on a rotating shaft on one side of the wiping roller, a ratchet fork is mounted on the support frame, the ratchet fork cooperates with the ratchet for transmission, and a crank is fixed to the rotating shaft of the wiping roller.

[0012] Furthermore, a liquid squeezing device is provided directly below the wiping roller.

[0013] Furthermore, the liquid squeezing device includes a push plate, which is directly opposite to the wiping sponge directly below the wiping roller. A cylinder is provided at the lower end of the push plate, and a mounting plate is provided at the bottom of the cylinder.

[0014] Furthermore, two blowing devices are provided at the rear end of the sizing guide of the filament bundle, and the blowing device includes a mounting frame, on which an upper nozzle and a lower nozzle are arranged in an upper and lower manner. As shown in the figure, the filament bundle passes between the upper nozzle and the lower nozzle, and a plurality of nozzles are respectively installed on the opposite sides of the upper nozzle and the lower nozzle.

[0015] Furthermore, the upper nozzle and the lower nozzle are horizontally slidably mounted on both sides of the mounting frame, the lower sides of the upper nozzle and the lower nozzle are connected to horizontally arranged sliding rods, the two sliding rods are slidably mounted on opposite sides of the mounting frame, a rotating arm is rotatably mounted between the two sliding rods, and a connecting rod is respectively provided on both sides of the rotating arm, one end of the connecting rod is hinged to the end of the rotating arm, and the other end of the connecting rod is hinged to the inner end of the sliding rod;

[0016] When the rotating arm rotates, the sliding rods on both sides thereof are driven to slide through the connecting rod.

[0017] Furthermore, a cam is rotatably installed between the two blowing devices, and the cam is rotatably installed at the lower end of the filament bundle.

[0018] Compared with the prior art, the present invention has the following advantages after adopting the above technical solution:

[0019] 1. The guide roller at the end plays a role in squeezing and discharging the slurry on the tow during the conduction process. The slurry sponge wipes the slurry adhering to the guide roller, so that the guide roller at the end can better squeeze and discharge the slurry on the tow. At the same time, the slurry sponge on the top wipes the tow on top, thereby preventing the slurry from hanging on the tow after dipping, effectively regulating the slurry content of the carbon fiber tow, and effectively improving the uniformity of the slurry content between the tows.

[0020] 2. When the rotating arm rotates, the sliding rods on both sides are driven to slide through the connecting rod, thereby driving the nozzles of the upper and lower nozzles to spray the tow evenly. On the one hand, it avoids the slurry from gathering on the tow and makes the slurry evenly coated on the tow. On the other hand, it accelerates the drying of the slurry and achieves a good sizing effect.

[0021] 3. The cam is installed at the lower end of the tow. During the rotation of the cam, it continuously pushes the tow up and down, causing the tow to vibrate and achieve better blowing effect.

[0022] The present invention will be described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural diagram of the utility model;

[0024] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0025] Figure 3 This is a schematic structural diagram of the guide roller in the utility model;

[0026] Figure 4 This is a schematic structural diagram of the pulp wiping roller and the liquid squeezing device in the utility model;

[0027] Figure 5 It is a structural diagram of the blowing device in the utility model.

[0028] In the figure,

[0029] 1-sizing groove, 2-guide roller, 3-cam, 301-wire guide groove, 4-sizing roller, 401-mounting groove, 402-sizing sponge, 403-blocking part, 404-ratchet, 405-ratchet fork, 406-crank handle, 407-support frame, 5-liquid extrusion device, 501-cylinder, 502-mounting plate, 503-push plate, 6-blowing device, 601-upper nozzle, 602-lower nozzle, 603-nozzle, 604-sliding rod, 605-rotating arm. DETAILED DESCRIPTION

[0030] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation methods of the present invention are now described with reference to the accompanying drawings.

[0031] like Figure 1-3 As shown, the utility model provides a device for uniformly sizing carbon fiber tows, including a sizing tank 1 and a plurality of guide rollers 2. The sizing tank 1 stores slurry, and the carbon fiber tows are flatly transmitted between the plurality of guide rollers 2, wherein some guide rollers 2 are immersed below the slurry liquid surface for sizing, and the outer side of the guide roller 2 is arranged with a plurality of guide grooves 301 along the axial direction, as shown in FIG. Figure 3 The tow is continuously transmitted in the wire guide groove 301 of the guide roller 2, so that the tow is more evenly distributed in the axial direction of the guide roller 2, which is convenient for sizing and the uniformity of the sizing of the tow in the later stage.

[0032] A slurry roller 4 is provided on the lower side of the tow after being guided out from the guide roller 2 at the end of sizing. A plurality of slurry sponges 402 are fixed to the outer ring of the slurry roller 4 in the axial direction. The slurry sponges 402 on the top of the slurry roller 4 are close to the lower side of the tow, and the slurry sponges 402 on the side of the slurry roller 4 are close to the guide roller 2 at the end. The guide roller 2 at the end plays a role in squeezing and slurry removal on the tow during the conduction process. The slurry sponges 402 wipe off the slurry adhering to the guide roller 2, so that the guide roller 2 at the end has a better effect of squeezing and slurry removal on the tow. At the same time, the slurry sponges 402 on the top wipe the tow on its top, thereby preventing the slurry from hanging on the tow after dipping, effectively regulating the slurry content of the carbon fiber tow, and effectively improving the uniformity of the slurry content between the tows.

[0033] Preferably, four wiping sponges 402 are provided on the outer ring of the wiping roller 4, the top wiping sponge 402 is close to the tow, and the side wiping sponge 402 is facing the side of the guide roller 2 at the end.

[0034] The outer ring of the slurry-cleaning roller 4 is provided with evenly distributed mounting grooves 401, and the slurry-cleaning sponge 402 is installed in the mounting grooves 401. Both sides of the outer end of the mounting groove 401 are provided with blocking parts 403 extending inward, and both sides of the slurry-cleaning sponge 402 are correspondingly provided with grooves. The grooves cooperate with the blocking parts 403 to fix the slurry-cleaning sponge 402 in the mounting groove 401. When the slurry-cleaning sponge 402 is damaged, it is taken out from the mounting groove 401 for replacement.

[0035] The two ends of the wiping roller 4 are rotatably mounted on the support frame 407. A ratchet 404 is fixed on the rotating shaft on one side of the wiping roller 4. A ratchet fork 405 is installed on the support frame 407. The ratchet fork 405 cooperates with the ratchet 404 for transmission. A crank 406 is fixed on the rotating shaft of the wiping roller 4. When the wiping sponges 402 at the upper end and the side contain more slurry, the crank 406 is turned and other wiping sponges 402 are used for wiping. The ratchet fork 405 cooperates with the ratchet 404 for transmission to position the wiping roller 4 at an angle.

[0036] A liquid squeezing device 5 is provided just below the rubbing roller 4. Figure 4The liquid squeezing device 5 includes a push plate 503, which is opposite to the wiping sponge 402 directly below the wiping roller 4. A cylinder 501 is provided at the lower end of the push plate 503, and a mounting plate 502 is provided at the bottom of the cylinder 501. The cylinder 501 and the support frame 407 are fixed on the mounting plate 502, and the mounting plate 502 is fixed on the sizing tank 1.

[0037] The rear end of the tow sizing outlet is provided with two blowing devices 6, such as Figure 5 The blowing device 6 includes a mounting frame, on which an upper nozzle 601 and a lower nozzle 602 are arranged in an upper and lower manner. Figure 4 The tow passes between the upper nozzle 601 and the lower nozzle 602, and a plurality of nozzles 603 are respectively installed on the facing sides of the upper nozzle 601 and the lower nozzle 602.

[0038] The upper nozzle 601 and the lower nozzle 602 are horizontally slidably installed on both sides of the installation frame, and the lower sides of the upper nozzle 601 and the lower nozzle 602 are connected to the horizontally arranged sliding rod 604. The two sliding rods 604 are respectively slidably installed on the opposite sides of the installation frame. A rotating arm 605 is rotatably installed between the two sliding rods 604. A connecting rod is respectively provided on both sides of the rotating arm, one end of the connecting rod is hinged to the end of the rotating arm 605, and the other end of the connecting rod is hinged to the inner end of the sliding rod 604. When the rotating arm 605 rotates, the sliding rods 604 on both sides thereof are driven to slide through the connecting rod, thereby driving the nozzles 603 of the upper nozzle 601 and the lower nozzle 602 to evenly spray the filament bundle. On the one hand, it avoids the slurry from gathering on the filament bundle and makes the slurry evenly coated on the filament bundle. On the other hand, it accelerates the drying of the slurry, and the sizing effect is good.

[0039] Furthermore, a cam 3 is rotatably installed between the two blowing devices 6. The cam 3 is rotatably installed at the lower end of the filament bundle. During the rotation of the cam 3, the filament bundle is continuously pushed up and down to vibrate the filament bundle, thereby achieving a better blowing effect.

[0040] The above description is merely an example of the preferred embodiment of the present invention. Any details not described in detail are common knowledge within the art. The scope of protection of the present invention is determined by the claims. Any equivalent modifications based on the technical teachings of the present invention are also within the scope of protection of the present invention.

Claims

1. A device for uniformly sizing carbon fiber tows, comprising a sizing tank (1) and a plurality of guide rollers (2), wherein the sizing tank (1) stores sizing liquid, and the carbon fiber tows are flatly transmitted between the plurality of guide rollers (2), wherein some of the guide rollers (2) are immersed below the sizing liquid surface for sizing, and characterized in that: A plurality of wire guide grooves (301) are arranged axially on the outer side of the guide roller (2); A sizing roller (4) is provided on the lower side of the filament bundle after being guided out from the guide roller (2) at the end of sizing. A plurality of sizing sponges (402) are fixed axially on the outer ring of the sizing roller (4). The sizing sponges (402) on the top of the sizing roller (4) are close to the lower side of the filament bundle, and the sizing sponges (402) on the side of the sizing roller (4) are close to the guide roller (2) at the end.

2. The device for uniformly sizing carbon fiber tows according to claim 1, characterized in that: The outer ring of the wiping roller (4) is provided with four wiping sponges (402), the top wiping sponge (402) is close to the filament bundle, and the side wiping sponge (402) is facing the side of the guide roller (2) at the end.

3. The device for uniformly sizing carbon fiber tows according to claim 1, wherein: The outer ring of the pulping roller (4) is provided with evenly distributed mounting grooves (401), the pulping sponge (402) is installed in the mounting grooves (401), and blocking portions (403) extending inward are provided on both sides of the outer end of the mounting groove (401), and grooves are correspondingly provided on both sides of the pulping sponge (402), and the grooves are matched with the blocking portions (403).

4. The device for uniformly sizing carbon fiber tows according to claim 3, characterized in that: The two ends of the pulping roller (4) are rotatably mounted on a support frame (407); a ratchet (404) is fixed on a rotating shaft on one side of the pulping roller (4); a ratchet fork (405) is mounted on the support frame (407); the ratchet fork (405) cooperates with the ratchet (404) for transmission; and a crank (406) is fixed on the rotating shaft of the pulping roller (4).

5. The device for uniformly sizing carbon fiber tows according to claim 1, characterized in that: A liquid squeezing device (5) is provided directly below the wiping roller (4).

6. The device for uniformly sizing carbon fiber tows according to claim 5, characterized in that: The squeezing device (5) includes a push plate (503) facing the wiping sponge (402) directly below the wiping roller (4). A cylinder (501) is provided at the lower end of the push plate (503), and a mounting plate (502) is provided at the bottom of the cylinder (501).

7. The device for uniformly sizing carbon fiber tows according to claim 1, characterized in that: Two blowing devices (6) are provided at the rear end of the sizing lead-out portion of the tow, the blowing device (6) comprising a mounting frame, an upper nozzle (601) and a lower nozzle (602) being arranged in an upper and lower arrangement on the mounting frame, the tow passing between the upper nozzle (601) and the lower nozzle (602), and a plurality of nozzles (603) being respectively installed on opposite sides of the upper nozzle (601) and the lower nozzle (602).

8. The device for uniformly sizing carbon fiber tows according to claim 7, characterized in that: The upper nozzle (601) and the lower nozzle (602) are horizontally slidably mounted on both sides of the mounting frame. The lower sides of the upper nozzle (601) and the lower nozzle (602) are connected to a horizontally arranged slide bar (604). The two slide bars (604) are respectively slidably mounted on opposite sides of the mounting frame. A rotating arm (605) is rotatably mounted between the two slide bars (604). A connecting rod is respectively provided on both sides of the rotating arm. One end of the connecting rod is hinged to the end of the rotating arm (605), and the other end of the connecting rod is hinged to the inner end of the slide bar (604). When the rotating arm (605) rotates, the sliding rods (604) on both sides thereof are driven to slide via the connecting rod.

9. The device for uniformly sizing carbon fiber tows according to claim 7, characterized in that: A cam (3) is rotatably mounted between the two blowing devices (6), and the cam (3) is rotatably mounted on the lower end of the filament bundle.

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