Online oiling device for carbon fiber precursors

Abstract

The invention discloses a carbon fiber precursor online oiling device which comprises a device shell, a plurality of rollers are rotationally installed on the upper portion in the device shell, and a plurality of oiling pipes are further installed on the upper portion in the device shell. The oiling pipes are respectively distributed outside a carbon fiber precursor bundle surface between adjacent rollers and outside a carbon fiber precursor bundle surface output by the last roller, and each oiling pipe is provided with a plurality of nozzles; an oil chamber is installed on the lower portion in the device shell and divided into an upper portion and a lower portion by a filter screen, the upper portion in the oil chamber serves as an oil receiving groove, the lower portion in the oil chamber serves as an oil storage groove, and the oil storage groove is connected with the upper oil pipes through hoses. According to the fiber oiling device, the utilization rate of an oiling agent is remarkably increased, meanwhile, the phenomenon of wasting of the oiling agent is reduced, and the processing quality and performance of fibers can be improved.

Description

Technical Field

[0001] The invention relates to the field of carbon fiber oiling devices, in particular to an online oiling device for carbon fiber precursor. Background Art

[0002] In the process of carbon fiber production, single fibers are prone to doubling and adhesion, which may cause surface defects during operation and drawing. To reduce these defects, excellent oiling agents and appropriate oiling processes are key.

[0003] The oiling process is to form a protective oil film on the fiber surface, which can improve the mechanical properties of carbon fiber and contribute to the improvement of carbon fiber strength by 0.5~1.0GPa. In order to enhance the bundling, fiber opening and antistatic properties of the fiber and reduce lint, oiling is performed twice after washing and stretching and before relaxation and heat setting. This allows the oil film to adhere evenly to the fiber surface and reduces damage between the tow and the transmission components. There are many ways to oil the fiber, including dipping, spraying, showering and roller contact. By changing the oiling method, the thickness and smoothness of the oil film can be better controlled, thereby improving the quality of the carbon fiber.

[0004] However, the existing carbon fiber oiling method has the problem of too much or too little oiling during the oil-immersed wire-feeding process, which will affect the subsequent process and cause serious waste of oil. In the case of excessive oiling, the oil is seriously wasted and cannot be fully utilized. This not only increases production costs, but also imposes a burden on the environment. On the other hand, too little oiling will cause uneven application of the oil on the fiber surface, affecting the processing quality and performance of the fiber. Therefore, a carbon fiber precursor online oiling device is needed to improve the above problems. Summary of the invention

[0005] The invention provides an online oiling device for carbon fiber precursor, so as to solve the problems of oil waste and uneven oiling in the prior art carbon fiber oiling method.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is: A carbon fiber precursor online oiling device comprises a device shell, a plurality of rollers are rotatably installed in the upper part of the device shell for transmitting the carbon fiber precursor, and a plurality of oiling pipes are also installed in the upper part of the device shell, the oiling pipes are respectively distributed outside the carbon fiber precursor bundle surface between adjacent rollers and outside the carbon fiber precursor bundle surface output by the last roller, each oiling pipe has a plurality of nozzles, and the nozzles of each oiling pipe are respectively directed toward the corresponding carbon fiber precursor bundle surface; An oil chamber is installed in the lower part of the device shell, and the top of the oil chamber is open to form an opening. The oil chamber is divided into upper and lower parts by a filter screen. The upper part of the oil chamber serves as an oil receiving tank, and the lower part of the oil chamber serves as an oil storage tank. The oil storage tanks are connected to each upper oil pipe through a hose.

[0007] Furthermore, an oil pump is also provided in the housing of the device, the oil inlet of the oil pump is connected to the oil storage tank through a hose, and the oil outlet of the oil pump is connected to each upper oil pipe through a hose.

[0008] Furthermore, an oil drain valve is provided on the surface of the device shell, and the oil drain valve is connected to the oil storage tank through a pipeline.

[0009] Furthermore, a door opening is provided on the lower surface of the device housing, and a switch door is installed in the door opening.

[0010] Furthermore, a funnel is provided between the upper part and the lower part of the device housing, and the leakage opening of the funnel is open downward toward the top of the oil chamber.

[0011] In the present invention, carbon fiber is transmitted through multiple rollers, and the oil pump is started to spray the oil in the oil storage tank through the nozzles of each oil supply pipe. The nozzles are adjusted to make the sprayed oil more uniform, thereby reducing the phenomenon of excessive or insufficient oiling of the filament bundle, thereby completing the oiling. The excess oil is collected into the oil receiving tank through the funnel, filtered through the filter net at the bottom, and then enters the oil storage tank for reuse. The oil storage tank can be refueled by opening the switch door.

[0012] The oiling device for applying oil to the fiber of the present invention can significantly improve the oiling agent utilization rate and reduce the waste of oiling agent. In addition, the present invention can also ensure that the oiling agent on the fiber surface is evenly applied, which is beneficial to improving the processing quality and performance of the fiber. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of an embodiment of the present invention.

[0014] Figure 2 It is a front view of the internal structure of an embodiment of the present invention.

[0015] Figure 3 It is a schematic diagram of the structure of the first upper oil pipe in an embodiment of the present invention. DETAILED DESCRIPTION

[0016] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0017] like Figure 1 , Figure 2As shown, this embodiment discloses an online oiling device for carbon fiber precursor, including a device housing 16, and side seats are respectively connected to the left and right sides of the lower part of the device housing 16. A first roller 12 with an axial front-to-back horizontal axis is rotatably installed on the top of the left side seat, and a fourth roller 15 with an axial front-to-back horizontal axis is rotatably installed on the top of the right side seat.

[0018] The interior of the device housing 16 is divided into an upper part and a lower part by a funnel 4, and the trumpet opening of the funnel 4 faces upward and the leaking port faces downward. A second roller 3 with an axially horizontal front-to-back direction is rotatably installed at the lower left side of the upper part of the device housing 16, and a third roller 9 with an axially horizontal front-to-back direction is rotatably installed at the upper right side of the upper part of the device housing 16. The second roller 3 and the third roller 9 are both located above the trumpet opening of the funnel 4, and openings are respectively provided on the left and right side walls of the upper part of the device housing 16. After the carbon fiber precursor to be oiled bypasses the first roller 12, it enters the upper part of the device housing from the opening of the upper left side wall of the device housing 16, and then bypasses the second roller 3 and the third roller 9 in turn, and then is output to the fourth roller 15 from the opening of the upper right side wall of the device housing 16, and then bypasses the fourth roller 15 and outputs outward. The transmission of the carbon fiber precursor tow is achieved through the cooperation of the first roller 12, the second roller 3, the third roller 9, and the fourth roller 16.

[0019] The first upper oil pipe 2 and the second upper oil pipe 10 are also installed in the upper part of the device housing 16. The axial directions of the first upper oil pipe 2 and the second upper oil pipe 10 are in the horizontal direction of the front and rear, and the axial lengths of the first upper oil pipe 2 and the second upper oil pipe 10 are greater than or equal to the width of the carbon fiber precursor bundle in the front and rear direction. The first upper oil pipe 2 is arranged above the upper bundle surface of the carbon fiber precursor bundle between the second roller 3 and the third roller 9, and the second upper oil pipe 10 is arranged below the lower bundle surface of the carbon fiber precursor bundle output by the third roller 9. Figure 3 As shown, the body of the first upper oil pipe 2 is connected to a plurality of nozzles 11, and each nozzle 11 of the first upper oil pipe 2 is respectively directed downward toward the upper tow surface of the carbon fiber precursor tow between the second roller 3 and the third roller 9. The body of the second upper oil pipe 10 is also connected to a plurality of nozzles, and each nozzle of the second upper oil pipe 10 is respectively directed upward toward the lower tow surface of the carbon fiber precursor tow output by the third roller 9.

[0020] An oil chamber is installed in the lower part of the device housing 16, and the top of the oil chamber is open to form an opening, and the leakage of the funnel 4 is open downwardly facing the top of the oil chamber. A filter screen 7 is provided in the oil chamber to divide the oil chamber into an upper part and a lower part, wherein the upper part of the oil chamber is used as an oil receiving tank 5, and the lower part of the oil chamber is used as an oil storage tank 8. An oil pump 6 is also installed in the lower part of the device housing 16, and the oil inlet of the oil pump 6 is connected to the oil storage tank 8 through a hose. A three-way valve 1 is installed in the upper part of the device housing 16, and the oil outlet of the oil pump 6 is connected to one valve port of the three-way valve 1 through a hose, and the other valve port of the three-way valve 1 is connected to the first upper oil pipe 2 through a hose, and the third valve port of the three-way valve 1 is connected to the second upper oil pipe 10 through a hose.

[0021] The front of the lower part of the device shell 16 is provided with an oil drain valve 13, and the inlet of the oil drain valve 13 is connected with the oil storage tank 8 through a hose. The front of the lower part of the device shell 16 is also provided with a door opening, and a switch door 14 is rotatably installed in the door opening.

[0022] Working principle: When in use, the carbon fiber raw yarn to be oiled first passes through the first roller 12, then passes through the second roller 3 and the third roller 9, and then passes through the fourth roller 15 through the device, and the oil pump 6 is started to spray the oil in the oil storage tank 8 through the nozzle 11 on the surface of the first oiling pipe 2 and the second oiling pipe 10. The sprayed oil agent is made more uniform through the nozzle, reducing the phenomenon of excessive or insufficient oiling of the yarn, thereby completing the oiling. The excess oil is collected by the funnel 4 and enters the oil receiving tank 5, and then enters the oil storage tank 8 for reuse after being filtered by the filter screen 7. The oil storage tank 8 can be refueled by opening the switch door 14.

[0023] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. The embodiments described in the present invention are merely descriptions of the preferred embodiments of the present invention, and do not limit the concept and scope of the present invention. The various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction, and such combinations should also be regarded as the contents disclosed in the present disclosure as long as they do not violate the concept of the present invention. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0024] The present invention is not limited to the specific details of the above-mentioned embodiments. Within the technical concept of the present invention and without departing from the design concept of the present invention, various modifications and improvements made to the technical solution of the present invention by technical personnel in this field should fall within the protection scope of the present invention. The technical contents for which protection is sought in the present invention have been fully recorded in the claims.

Claims

1. A carbon fiber precursor online oiling device, characterized in that: The device comprises a housing, a plurality of rollers are rotatably installed in the upper part of the housing for transmitting carbon fiber precursor, a plurality of upper oil pipes are also installed in the upper part of the housing, the upper oil pipes are respectively distributed outside the carbon fiber precursor bundle surface between adjacent rollers and outside the carbon fiber precursor bundle surface output by the last roller, each upper oil pipe has a plurality of nozzles, and the nozzles of each upper oil pipe are respectively directed toward the corresponding carbon fiber precursor bundle surface; An oil chamber is installed in the lower part of the device shell, and the top of the oil chamber is open to form an opening. The oil chamber is divided into upper and lower parts by a filter screen. The upper part of the oil chamber serves as an oil receiving tank, and the lower part of the oil chamber serves as an oil storage tank. The oil storage tanks are connected to each upper oil pipe through a hose.

2. The online oiling device for carbon fiber precursor according to claim 1, characterized in that: An oil pump is also arranged in the housing of the device. The oil inlet of the oil pump is connected to the oil storage tank through a hose, and the oil outlet of the oil pump is connected to each upper oil pipe through a hose.

3. The online oiling device for carbon fiber precursor according to claim 1, characterized in that: An oil drain valve is provided on the surface of the device shell, and the oil drain valve is connected to the oil storage tank through a pipeline.

4. The online oiling device for carbon fiber precursor according to claim 1, characterized in that: A door opening is arranged on the lower surface of the device shell, and a switch door is installed in the door opening.

5. The online oiling device for carbon fiber precursor according to any one of claims 1 to 4, characterized in that: A funnel is also arranged between the upper part and the lower part in the device shell, and the leakage opening of the funnel is open downward toward the top of the oil chamber.

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