Online oiling device for carbon fiber precursors

Abstract

The utility model discloses a carbon fiber precursor on-line 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 improved, 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 utility model relates to the field of carbon fiber oiling devices, in particular to an online oiling device for carbon fiber precursors. Background Art

[0002] During the carbon fiber production process, individual fibers are prone to doubling and sticking, which can cause surface defects during operation and drawing. To reduce these defects, excellent oiling agents and appropriate oiling processes are key.

[0003] The oiling process forms a protective oil film on the fiber surface, which improves the mechanical properties of carbon fiber and contributes between 0.5 and 1.0 GPa to the increase in carbon fiber strength. To enhance the fiber's bundling, fiber opening, and antistatic properties, and reduce lint, oiling is performed twice after washing and drafting and before relaxation and heat setting. This allows the oil film to adhere evenly to the fiber surface, reducing damage between the tow and the transmission components. There are various ways to oil fibers, including dipping, spraying, showering, and roller contact. By varying 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, existing carbon fiber oiling methods have the problem of over-oiling or under-oiling during the oil-immersion wire-feeding process, which affects subsequent processes and seriously wastes the 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 places a burden on the environment. On the other hand, too little oiling will result in uneven application of the oil on the fiber surface, affecting the processing quality and performance of the fiber. Therefore, there is a need for an online oiling device for carbon fiber precursor to improve the above-mentioned problems. Utility Model Content

[0005] The utility model provides an online oiling device for carbon fiber precursor, which solves the problems of oil waste and uneven oiling in the existing carbon fiber oiling method.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the present utility model is:

[0007] A carbon fiber precursor online oiling device includes a device housing, a plurality of rollers rotatably mounted on the upper inner portion of the device housing for transmitting carbon fiber precursor, and a plurality of oiling pipes mounted on the upper inner portion of the device housing. The oiling pipes are respectively distributed outside the surface of the carbon fiber precursor bundles between adjacent rollers and outside the surface of the carbon fiber precursor bundle 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.

[0008] 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.

[0009] Furthermore, an oil pump is 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.

[0010] Furthermore, an oil drain valve is provided on the surface of the device housing, and the oil drain valve is connected to the oil storage tank through a pipeline.

[0011] Furthermore, a door opening is provided on the lower surface of the device housing, and a switch door is installed in the door opening.

[0012] Furthermore, a funnel is provided between the upper portion and the lower portion of the device housing, and the leakage opening of the funnel is open downward toward the top of the oil chamber.

[0013] In the utility model, 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. By adjusting the nozzles, the sprayed oil is made more uniform, and the phenomenon of excessive or insufficient oiling on the tow is reduced, thereby completing the oiling. The excess oil is collected into the oil receiving tank through the funnel, filtered through the filter screen at the bottom, and then enters the oil storage tank for reuse. The oil storage tank can be refueled by opening the switch door.

[0014] The fiber oiling device of the utility model can significantly improve the utilization rate of the oil agent and reduce the waste of the oil agent. In addition, the utility model can also ensure that the oil agent is evenly applied to the fiber surface, which is beneficial to improving the processing quality and performance of the fiber. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic structural diagram of an embodiment of the present utility model.

[0016] Figure 2 It is a front view of the internal structure of an embodiment of the present utility model.

[0017] Figure 3 It is a schematic diagram of the structure of the first upper oil pipe in an embodiment of the present utility model. DETAILED DESCRIPTION

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] 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.

[0020] The interior of the housing 16 is divided into upper and lower sections by a funnel 4, with the funnel 4's trumpet opening facing upward and its outlet facing downward. A second roller 3, axially horizontal and front-to-back, is rotatably mounted on the lower left side of the upper interior of the housing 16. A third roller 9, axially horizontal and front-to-back, is rotatably mounted on the upper right side of the upper interior of the housing 16. Both the second roller 3 and the third roller 9 are located above the trumpet opening of the funnel 4. Openings are provided on the left and right sides of the upper interior of the housing 16. After passing around the first roller 12, the oiled carbon fiber precursor tow enters the upper interior of the housing 16 through an opening in the left side wall. It then passes around the second roller 3 and the third roller 9 in sequence before exiting through an opening in the right side wall of the upper interior of the housing 16 to the fourth roller 15. After passing around the fourth roller 15, it is discharged outward. The first roller 12, the second roller 3, the third roller 9, and the fourth roller 16 work together to transport the carbon fiber precursor tow.

[0021] 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 both in the front-to-back horizontal direction, and the axial lengths of the first upper oil pipe 2 and the second upper oil pipe 10 are both greater than or equal to the width of the carbon fiber precursor tow in the front-to-back direction. The first upper oil pipe 2 is located above the upper tow surface of the carbon fiber precursor tow between the second roller 3 and the third roller 9, and the second upper oil pipe 10 is located below the lower tow surface of the carbon fiber precursor tow output by the third roller 9. Figure 3 As shown, the first upper oil pipe 2 is connected to a plurality of nozzles 11, each nozzle 11 of the first upper oil pipe 2 is downwardly directed toward the upper tow surface of the carbon fiber precursor tow between the second roller 3 and the third roller 9. The second upper oil pipe 10 is also connected to a plurality of nozzles, each nozzle of the second upper oil pipe 10 is upwardly directed toward the lower tow surface of the carbon fiber precursor tow outputted by the third roller 9.

[0022] An oil chamber is mounted in the lower portion of the device housing 16. The top of the chamber is open, and the drain port of the funnel 4 faces downwardly toward the top of the chamber. A filter screen 7 is installed within the oil chamber, dividing it into upper and lower sections. The upper section serves as an oil receiving tank 5, while the lower section serves as an oil storage tank 8. An oil pump 6 is also mounted in the lower portion of the device housing 16. The oil inlet of the oil pump 6 is connected to the oil storage tank 8 via a hose. A three-way valve 1 is mounted in the upper portion of the device housing 16. The oil outlet of the oil pump 6 is connected to one valve port of the three-way valve 1 via a hose. The other valve port of the three-way valve 1 is connected to the first upper oil pipe 2 via a hose. The third valve port of the three-way valve 1 is connected to the second upper oil pipe 10 via a hose.

[0023] The front of device shell 16 lower parts is provided with drain valve 13, and the import of drain valve 13 is connected in the oil storage tank 8 by a hose. The front of device shell 16 lower parts is also provided with door opening, and a switch door 14 is rotated and installed in the door opening.

[0024] Working Principle: During use, the carbon fiber precursor tow to be oiled first passes through the first roller 12, then the second roller 3 and the third roller 9, and then passes through the fourth roller 15 through the device. The oil pump 6 is activated to spray the oil in the oil storage tank 8 through the nozzles 11 on the surface of the first oil supply pipe 2 and the second oil supply pipe 10. The nozzles make the sprayed oil more uniform, reducing the phenomenon of excessive or insufficient oil on the tow, thus completing the oiling. Excess oil is collected by the funnel 4 and enters the oil receiving tank 5. After being filtered by the filter screen 7, it enters the oil storage tank 8 for reuse. The oil storage tank 8 can be refueled by opening the switch door 14.

[0025] The preferred embodiments of the present invention are described in detail above with reference to 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 unless there is any contradiction. Such combinations, as long as they do not violate the concept of the present invention, should also be regarded as the contents disclosed in the present disclosure. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0026] The present invention is not limited to the specific details in 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 those skilled in the art should fall within the protection scope of the present invention. The technical contents for which protection is sought in the present invention have all been 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 mounted on the upper portion of the housing for transmitting carbon fiber precursors, and a plurality of oiling pipes are also mounted on the upper portion of the housing. The oiling pipes are respectively distributed outside the carbon fiber precursor tow surface between adjacent rollers and outside the carbon fiber precursor tow 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 tow 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 provided in the device housing. 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 provided 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 further provided 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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