Tow oiling system

Abstract

The application relates to a tows oiling system which comprises a filtering device with a filtering cavity; an inlet of a metering pump is communicated with an oil storage cavity, an outlet of the metering pump is communicated with the filtering cavity, the oil storage cavity is used for storing oil with a higher oil concentration than that in the filtering cavity, the metering pump is used for conveying the oil in the oil storage cavity into the filtering cavity; an oil spraying device which comprises a spraying head; an inlet of a circulating pump is communicated with the filtering cavity, an outlet of the circulating pump is communicated with an oil inlet of the spraying head; an oil receiving groove is arranged below the spraying head and the tows; the oil receiving groove is communicated with the filtering cavity; a concentration detection device is arranged in the filtering cavity to detect the oil concentration of the oil in the filtering cavity, a signal output end of the concentration detection device is electrically connected with a first signal input end of a control module; the metering pump is a metering pump with adjustable rotating speed, and the metering pump is electrically connected with a first signal output end of the control module. The oil concentration of the oil in the filtering cavity is ensured to be within a proper range, and the uniformity of the tows oiling and the stability of the tows oiling amount are improved.

Description

Technical Field

[0001] This application relates to the field of fiber tow oiling equipment technology, and more particularly to a fiber tow oiling system. Background Technology

[0002] Oiling the fiber bundle is a crucial step in the manufacturing process of carbon fiber. It significantly improves the processing performance of the fiber bundle and enhances the quality of the final product by lubricating the fiber bundle surface, eliminating static electricity, improving the bundle's cohesion, and enhancing surface wettability.

[0003] In related technologies, oil bath immersion is used to apply oil to the fiber bundle. However, the oil agent is unevenly distributed in the oil bath, which prevents the fiber bundle from contacting the oil agent evenly during the oiling process. Furthermore, other substances are introduced during the immersion of the fiber bundle into the oil bath, making it impossible to accurately maintain the concentration of the oil agent within a certain range. This ultimately leads to unstable oiling and affects the performance of the carbon fiber. Moreover, impurities in the oil bath cannot be effectively filtered, and these impurities can easily contaminate the surface of the fiber bundle, affecting the quality of the oil agent and the oiling effect of the fiber bundle. Utility Model Content

[0004] To overcome the problems existing in related technologies, this application provides a tow oiling system.

[0005] According to a first aspect of this application, a tow oiling system is provided, comprising: A filtration device, wherein the filtration device is provided with a filtration chamber for containing oil; A metering pump, the inlet of which is connected to an oil storage chamber, and the outlet of which is connected to a filter chamber, wherein the oil storage chamber is used to store an oil with a higher concentration than the oil in the filter chamber, and the metering pump is used to transport the oil in the oil storage chamber to the filter chamber. An oil spraying device includes a nozzle for spraying oil onto the filament bundle; A circulating pump, the inlet of which is connected to the filter chamber and the outlet of which is connected to the oil inlet of the nozzle, to deliver oil to the nozzle; An oil receiving trough is located below the nozzle and the filament bundle to receive the oil; the oil receiving trough is connected to the filter chamber so that the oil in the oil receiving trough flows back into the filter chamber; A concentration detection device is installed inside the filter chamber to detect the oil concentration of the oil agent inside the filter chamber. The signal output terminal of the concentration detection device is electrically connected to the first signal input terminal of the control module. The metering pump is an adjustable speed metering pump, and the metering pump is electrically connected to the first signal output terminal of the control module.

[0006] In some embodiments of this application, the filtering device includes: A filter tank, wherein the filter chamber is provided within the filter tank; A filter screen is inserted into the filter groove and divides the filter chamber into an upper oil chamber and an oil return chamber arranged sequentially along the extension direction of the filter groove; The outlet of the metering pump and the inlet of the circulation pump are both connected to the upper oil chamber, and the return oil chamber is connected to the oil receiving tank; the concentration detection device is located in the upper oil chamber.

[0007] In some embodiments of this application, the nozzle includes: The nozzle housing has a first channel formed inside it; the nozzle housing is provided with an oil injection hole and an oil inlet, and both the oil inlet and the oil injection hole are connected to the first channel. An adjustment knob is provided, one end of which is inserted into the nozzle housing and threadedly connected to it. Rotating the adjustment knob drives it to move radially along the first channel to change the flow cross-sectional area of ​​the first channel, thereby adjusting the injection pressure of the nozzle.

[0008] In some embodiments of this application, a first cavity, a second channel, and a third channel are formed inside the nozzle housing, and the second channel and the third channel both connect the first channel and the first cavity; When the adjustment knob completely blocks the first channel, the adjustment knob divides the first channel into an oil inlet channel and an oil outlet channel. The oil inlet channel is connected to the oil inlet port and is connected to the first cavity through the second channel. The oil outlet channel is connected to the oil injection hole and is connected to the first cavity through the third channel.

[0009] In some embodiments of this application, the circulating pump is a variable frequency circulating pump, and the circulating pump includes: A pressure detector is installed at the outlet of the circulating pump to detect the oil outlet pressure of the circulating pump; A circulating pump controller, wherein the first signal input terminal of the circulating pump controller is electrically connected to the signal output terminal of the pressure detector; Pump body; An electric motor is connected to the pump body to drive the rotor inside the pump body to rotate; The inverter has its first signal input terminal electrically connected to the first signal output terminal of the circulating pump controller, and its first signal output terminal electrically connected to the motor to change the speed of the motor.

[0010] In some embodiments of this application, the nozzle has multiple pairs spaced apart along a first direction, each pair of nozzles corresponding to multiple bundles of filaments, the two nozzles in a pair being located above and below the filaments corresponding to the pair of nozzles, and the two nozzles in a pair being arranged opposite to each other.

[0011] In some embodiments of this application, the tow oiling system further includes at least two sets of nozzle fixing devices, which are fixed on the oil receiving groove; and two pairs of nozzles are fixed on different nozzle fixing devices.

[0012] In some embodiments of this application, the nozzle fixing device includes: A fixed bracket is fixedly connected to the oil receiving groove; The connecting rod is connected to the fixed bracket; The nozzle bracket is connected to the connecting rod via a rotating connection mechanism; The nozzle is fixed to the nozzle bracket; The nozzle bracket rotates relative to the connecting rod via the rotary connecting mechanism to adjust the orientation of the nozzle, and the rotary connecting mechanism is configured to fix the nozzle and the connecting rod relative to each other after the orientation of the nozzle is adjusted.

[0013] In some embodiments of this application, the nozzle fixing device further includes: A first telescopic cylinder, the cylinder body of which is fixedly connected to the fixed bracket, extends and retracts along a first direction; The second telescopic cylinder has its cylinder body fixedly connected to the telescopic rod of the first telescopic cylinder. The second telescopic cylinder extends and retracts along a second direction, and the telescopic rod of the second telescopic cylinder is fixedly connected to the connecting rod. The second direction is perpendicular to the first direction.

[0014] In some embodiments of this application, the tow oiling system further includes: A cleaning device is used to clean the filament bundle using a cleaning solution; the cleaning device is located upstream of the nozzle along the conveying direction of the filament bundle. The technical solutions provided by the embodiments of this application may include the following beneficial effects: Equipped with a metering pump, filter chamber, concentration detection device, and oil receiving tank, this system enables the recovery and reuse of oil. It can detect the oil concentration within the filter chamber. When the recovered oil introduces other substances that lower the oil concentration, the metering pump can replenish the filter chamber with a relatively high concentration of oil. The pump's speed is adjustable, allowing for control over the replenishment rate and amount, ensuring the oil concentration remains within a suitable range. This improves the uniformity of oil concentration in the filter chamber, thereby enhancing the uniformity and stability of oil application to the fiber tow, improving the processing performance of the fiber tow, and ultimately increasing the quality and performance of the carbon fiber. Furthermore, the fiber tow oiling system is easy to process and operate, adaptable to various fiber tow oiling processes, and has low maintenance costs.

[0015] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0016] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0017] Figure 1 This is a schematic diagram of a tow oiling system according to an exemplary embodiment; Figure 2 This is a structural diagram of a filtering device according to an exemplary embodiment; Figure 3 This is a cross-sectional view of a nozzle according to an exemplary embodiment; Figure 4 This is a cross-sectional view of the nozzle from another perspective, according to an exemplary embodiment. Figure 5 This is a cross-sectional view of a partial structure of a nozzle according to an exemplary embodiment; Figure 6 This is a structural diagram of a nozzle fixing device according to an exemplary embodiment.

[0018] In the picture: 1-Filter device; 11-Filter tank; 111-Filter chamber; 1111-Oil inlet chamber; 1112-Oil return chamber; 12-Filter screen; 2- Metering pump; 3-Sprayer head; 31- Nozzle housing; 312- First channel; 3121- Oil inlet channel; 3122- Oil outlet channel; 313- First chamber; 3141- Second channel; 3142- Third channel; 315- Lower shell; 3151- Sixth channel; 3152- First through hole; 316- Core; 3161- Fifth channel; 31611- First sub-channel; 31612- Second sub-channel; 3162- Partition; 317- Nozzle; 3171- Injection hole; 318- Top cover; 3181- Fourth channel; 32-Adjustment knob; 321-Knob part; 322-Rotation lever; 33 - Sealing ring; 34 - Sealing gasket; 4- Circulation pump; 5-Oil receiving tank; 61 - Concentration detection device; 62-Oil storage device; 63-Control Module; 7- Nozzle fixing device; 71- Fixing bracket; 72- Connecting rod; 73- Nozzle bracket; 74- First telescopic cylinder; 75- Second telescopic cylinder; 76- First guide rod; 77- Second guide rod; 8-Cleaning device; 81-Cleaning tank. Detailed Implementation

[0019] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0020] Oiling the fiber bundle is a crucial step in the manufacturing process of carbon fiber. It significantly improves the processing performance of the fiber bundle and enhances the quality of the final product by lubricating the fiber bundle surface, eliminating static electricity, improving the bundle's cohesion, and enhancing surface wettability.

[0021] In related technologies, oil bath immersion is used to apply oil to the fiber bundle. However, the oil agent is unevenly distributed in the oil bath, which prevents the fiber bundle from contacting the oil agent evenly during the oiling process. Furthermore, other substances are introduced during the immersion of the fiber bundle into the oil bath, making it impossible to accurately maintain the concentration of the oil agent within a certain range. This ultimately leads to unstable oiling and affects the performance of the carbon fiber. Moreover, impurities in the oil bath cannot be effectively filtered, and these impurities can easily contaminate the surface of the fiber bundle, affecting the quality of the oil agent and the oiling effect of the fiber bundle.

[0022] Based on this, this application provides a fiber tow oiling system, which includes a filter device 1, a metering pump 2, an oil spraying device, a circulation pump 4, an oil receiving tank 5, and a concentration detection device 61. The filter device 1 has a filter chamber 111 for containing the oil. The inlet of the metering pump 2 is connected to an oil storage chamber, and the outlet of the metering pump 2 is connected to the filter chamber 111. The oil storage chamber stores oil with a higher concentration than the oil in the filter chamber 111, and the metering pump 2 delivers the oil from the oil storage chamber to the filter chamber 111. The oil spraying device includes a nozzle 3 for spraying oil onto the fiber tow 90. The inlet of the circulation pump 4 is connected to the filter chamber 111, and the outlet of the circulation pump 4 is connected to the oil inlet of the nozzle 3 to deliver oil to the nozzle 3. The oil receiving tank 5 is located below the nozzle 3 and the fiber tow 90 to receive the oil. The oil receiving tank 5 is connected to the filter chamber 111 so that the oil in the oil receiving tank 5 flows back into the filter chamber 111. A concentration detection device 61 is installed inside the filter chamber 111 to detect the oil concentration of the oil agent inside the filter chamber 111. The signal output terminal of the concentration detection device 61 is electrically connected to the first signal input terminal of the control module. The metering pump 2 is a speed-adjustable metering pump 2, and the metering pump 2 is electrically connected to the first signal output terminal of the control module. The system can recycle and reuse oil, and can detect the oil concentration in the filter chamber 111. When the recycled oil introduces other substances that reduce the oil concentration in the filter chamber 111, a metering pump 2 can be used to replenish the filter chamber 111 with a relatively high oil concentration. The speed of the metering pump 2 is adjustable, which can regulate the replenishment speed and amount of oil to ensure that the oil concentration in the filter chamber 111 is within a suitable range, thereby improving the uniformity of the oil concentration in the filter chamber 111. This, in turn, improves the uniformity of oiling the fiber tow 90 and the stability of the oiling amount on the fiber tow 90, improves the processing performance of the fiber tow 90, and improves the quality and performance of the carbon fiber. Moreover, the fiber tow oiling system is easy to process and operate, adaptable to various fiber tow 90 oiling processes, and has low maintenance costs.

[0023] An exemplary embodiment of this application provides a tow oiling system. (See reference...) Figure 1 The fiber tow oiling system includes a filter device 1. The filter device 1 has a filter chamber 111 for containing the oil.

[0024] refer to Figure 1 The fiber tow oiling system includes a metering pump 2. The inlet of the metering pump 2 is connected to the oil storage chamber. The outlet of the metering pump 2 is connected to the filter chamber 111. The oil storage chamber is used to store oil with a higher concentration than the oil in the filter chamber 111. The metering pump 2 is used to deliver the oil from the oil storage chamber to the filter chamber 111.

[0025] refer to Figure 1The fiber tow oiling system includes an oil spraying device. The oil spraying device includes a nozzle 3 for spraying oil onto the fiber tow 90. Spraying oil onto the fiber tow 90 has the following functions: the oil covers the surface of the fiber tow 90, lubricating the surface and reducing friction between the fiber tow 90 and the equipment, as well as between the fiber tow 90 and adjacent fiber tows 90 during processing, thus reducing the risk of surface wear; the polar components in the oil neutralize static charge, preventing the fiber tow 90 from attracting dust or tangling with equipment due to static electricity, ensuring production stability; the oil binds the monofilaments into bundles, facilitating subsequent winding, stretching, and other processes, reducing loosening issues; the oil forms a uniform film on the surface of the fiber tow 90, improving surface wettability, reducing the coefficient of friction, avoiding fiber defects, and improving production efficiency.

[0026] refer to Figure 1 The fiber tow oiling system includes a circulation pump 4. The inlet of the circulation pump 4 is connected to the filter chamber 111. The outlet of the circulation pump 4 is connected to the oil inlet of the nozzle 3 to deliver oil to the nozzle 3.

[0027] refer to Figure 1 The fiber tow oiling system includes an oil receiving tank 5. The oil receiving tank 5 is located below the nozzle 3 and the fiber tow 90 to collect the oil. The oil receiving tank 5 is connected to the filter chamber 111 so that the oil in the oil receiving tank 5 flows back into the filter chamber 111.

[0028] refer to Figure 1 The fiber tow oiling system includes a concentration detection device 61. The concentration detection device 61 is located inside the filter chamber 111 to detect the oil concentration of the oiling agent within the filter chamber 111. Specifically, the concentration detection device 61 is used to detect the oil concentration of the oiling agent within the filter chamber 111 in real time. The signal output terminal of the concentration detection device 61 is electrically connected to the first signal input terminal of the control module 63.

[0029] The metering pump 2 is an adjustable-speed metering pump. The metering pump 2 is electrically connected to the first signal output terminal of the control module 63, so that the control module 63 controls the speed of the metering pump 2 according to the oil concentration detected by the concentration detection device 61.

[0030] The system is equipped with a metering pump 2, a filter chamber 111, a concentration detection device 61, and an oil receiving tank 5. It can recycle and reuse the oil agent, detect the oil concentration in the filter chamber 111, and replenish the filter chamber 111 with a relatively high oil concentration when the recycled oil agent introduces other substances that lower the oil concentration. The metering pump 2 can be adjusted to regulate the replenishment speed and amount of oil agent, ensuring the oil concentration in the filter chamber 111 remains within a suitable range. This improves the uniformity of the oil concentration in the filter chamber 111, thereby improving the uniformity of oil application to the fiber tow 90 and the stability of the oil application amount. This enhances the processing performance of the fiber tow 90 and improves the quality and performance of the carbon fiber. Furthermore, the fiber tow oiling system is easy to process and operate, adaptable to various fiber tow 90 oiling processes, and has low maintenance costs.

[0031] The oil in the oiling agent can be a specially modified silicone oil, such as polyether silicone oil or amino silicone oil. The oil concentration of the oiling agent in the filter chamber 111 can be any value between 0.2% and 18.0% to ensure the uniformity of oiling on the fiber bundle 90 and the stability of the amount of oil on the fiber bundle 90. Specifically, the oil concentration of the oiling agent can be the ratio of the mass of the oil to the mass of the oil and water mixture. The water can be demineralized water.

[0032] In one embodiment, reference Figure 1 The fiber tow oiling system includes an oil storage device 62. The oil storage device 62 has an oil storage chamber for storing the oil agent. The oil concentration in the oil storage chamber is higher than the concentration of the oil agent in the filter chamber 111. When the recovered oil agent introduces other substances that lower the oil concentration in the filter chamber 111, the metering pump 2 can replenish the filter chamber 111 with a relatively higher concentration of oil agent to ensure that the oil concentration in the filter chamber 111 remains within a suitable range. The oil storage device 62 in the fiber tow oiling system provides support for the oil agent, facilitating the supply of oil agent to the filter chamber 111. The concentration of the oil agent in the oil storage chamber can be any value between 25% and 30%.

[0033] In one embodiment, reference Figure 1 The yarn tow oiling system includes a control module 63. The control module 63 is electrically connected to the metering pump 2 and the circulating pump 4. The control module 63 facilitates the control of the metering pump 2 by the yarn tow oiling system itself.

[0034] In one embodiment, reference Figure 2 The filter device 1 may include a filter tank 11. The filter tank 11 is provided with a filter chamber 111. The top of the filter chamber 111 may be open.

[0035] refer to Figure 2The filter device 1 may include a filter screen 12. The filter screen 12 may be inserted into the filter chamber 111. The filter screen 12 divides the filter chamber 111 into an upper oil chamber 1111 and an oil return chamber 1112 arranged sequentially along the extension direction of the filter groove 11.

[0036] The outlet of metering pump 2 and the inlet of circulating pump 4 are both connected to the upper oil chamber 1111, and the return oil chamber 1112 is connected to the oil receiving tank 5. The concentration detection device 61 is located in the upper oil chamber 1111.

[0037] The filter screen 12 divides the filter chamber 111 into an upper oil chamber 1111 and a return oil chamber 1112 arranged sequentially along the extension direction of the filter groove 11. The outlet of the metering pump 2 and the inlet of the circulation pump 4 are both connected to the upper oil chamber 1111, and the return oil chamber 1112 is connected to the oil receiving tank 5. The filter screen 12 can filter the oil entering the upper oil chamber 1111, ensuring that the oil sprayed by the nozzle 3 is free of impurities, improving the quality of the oil, and thus ensuring that the filament bundle 90 is free of impurities, as well as the stability of the next process after the filament bundle 90 is oiled.

[0038] A concentration detection device 61 is installed inside the upper oil chamber 1111, so that the concentration value detected by the concentration detection device 61 is closer to the concentration value of the oil delivered by the circulating pump 4, ensuring that the oil concentration of the oil sprayed on the fiber bundle 90 is within a suitable range, improving the uniformity of oil on the fiber bundle 90 and the stability of the amount of oil on the fiber bundle 90, improving the processing performance of the fiber bundle 90, and improving the quality and performance of the carbon fiber.

[0039] In one embodiment, the filter screen 12 is inserted from the top end of the filter groove 11 to the bottom end of the filter groove 11 and engages with the filter groove 11. One of the filter screen 12 and the filter groove 11 has a locking hole, and the other has a protrusion. The protrusion engages with the locking hole, thus achieving the engagement of the filter screen 12 and the filter groove 11. Along the extending direction of the filter groove 11, the filter groove 11 has two filter screen mounting slots to facilitate the replacement of the filter screen 12.

[0040] During operation of the filter tank 11, a filter screen 12 is installed in one of the filter screen mounting slots. When replacing the filter screen 12, it is inserted into one of the mounting slots, and the filter screen 12 in the other slot is pulled out. The replacement of the filter screen 12 is convenient and quick, reducing downtime for the yarn oiling system. Specifically, the replacement time for the filter screen 12 can be reduced to less than 45 seconds.

[0041] In one embodiment, the oil receiving tank 5 is provided with an oil drain port. The oil drain port is located at the bottom of the oil receiving tank 5 to facilitate the discharge of oil from the oil receiving tank 5. The filter tank 11 is provided with an oil return port. The oil return port is lower than the oil drain port to facilitate the return of oil discharged from the oil drain port to the filter chamber 111.

[0042] In one embodiment, reference Figure 3 , Figure 4 and Figure 5 The nozzle 3 includes a nozzle housing 31. A first channel 312 is formed inside the nozzle housing 31. The nozzle housing 31 is provided with an oil injection hole 3171 and an oil inlet. Both the oil inlet and the oil injection hole 3171 are connected to the first channel 312.

[0043] refer to Figure 3 , Figure 4 and Figure 5 The nozzle 3 includes an adjustment knob 32. One end of the adjustment knob 32 is inserted into and threadedly connected to the nozzle housing 31. Rotating the adjustment knob 32 drives it to move radially along the first channel 312, thereby changing the flow cross-sectional area of ​​the first channel 312 and thus adjusting the injection pressure of the nozzle 3. The axial direction of the first channel 312 is parallel to or coaxial with the axial direction of the nozzle housing 31.

[0044] By setting the adjustment knob 32, the flow cross-sectional area of ​​the first channel 312 can be changed, thereby adjusting the oil injection pressure of the nozzle 3. The oil injection pressure can be flexibly adjusted according to the needs of the oiling process, and it can be adapted to different filament bundles 90 and filament bundles 90 with different conveying speeds, so that the filament bundles 90 are oiled evenly.

[0045] refer to Figure 3 , Figure 4 and Figure 5 The nozzle housing 31 has a first cavity 313, a second channel 3141, and a third channel 3142. The second channel 3141 and the third channel 3142 both connect the first channel 312 and the first cavity 313.

[0046] When the adjusting knob 32 completely blocks the first channel 312, it divides the first channel 312 into an oil inlet channel 3121 and an oil outlet channel 3122. The oil inlet channel 3121 is connected to the oil inlet. The oil inlet channel 3121 is also connected to the first chamber 313 via a second channel. The oil outlet channel 3122 is connected to the oil injection port 3171. The oil outlet channel 3122 is also connected to the first chamber 313 via a third channel 3142.

[0047] When the adjusting knob 32 completely blocks the first channel 312, the oil inlet channel 3121 is connected to the first chamber 313 through the second channel 3141, and the oil outlet channel 3122 is connected to the first chamber 313 through the third channel 3142. This ensures that even when the first channel 312 is blocked, the oil can still flow through the first chamber 313 to the injection hole 3171, guaranteeing the oil's ejection.

[0048] In one embodiment, reference Figure 3 , Figure 4 and Figure 5The nozzle housing 31 includes a lower housing 315, a core 316, an upper cover 318, and a nozzle 317. The core 316 is disposed within the lower housing 315. The upper cover 318 is fixedly connected to the lower housing 315, and the upper cover 318 confines the core 316 within the lower housing 315. The nozzle 317 is connected to the lower housing 315. Specifically, the nozzle 317 and the upper cover 318 are respectively connected to both ends of the lower housing 315 along the axial direction of the nozzle housing 31.

[0049] The nozzle 317 is provided with multiple oil injection holes 3171. The outlet surface of the nozzle 317 is configured as a fan-shaped arc surface or a zigzag surface. The oil injection holes 3171 are located on the outlet surface. Providing multiple oil injection holes 3171 on the outlet surface can improve the atomization effect of the nozzle 3 and improve the uniformity of oil dispersion, so that the uniformity of oil dispersion reaches more than 95%.

[0050] refer to Figure 3 , Figure 4 and Figure 5 The core 316 has a first channel 312. The first channel 312 extends axially along the nozzle housing 31. The core 316 and the lower housing 315 define a first cavity 313 surrounding the outside of the first channel 312. The first cavity 313 extends axially along the nozzle housing 31. The first cavity 313 is annular. The core 316 has a second channel 3141 and a third channel 3142, both of which extend radially along the nozzle housing 31. The upper cover 318 has an oil inlet. The upper cover 318 has a fourth channel 3181, which communicates with the first channel 312. The fourth channel 3181 communicates with the oil inlet. The oil inlet is located at the top of the fourth channel 3181.

[0051] refer to Figure 3 , Figure 4 and Figure 5 The nozzle 3 includes a sealing ring 33. The sealing ring 33 is sleeved on the outside of the core 316. Along the axial direction of the nozzle housing 31, the sealing ring 33 is located on the side of the first cavity 313 near the upper cover 318. The sealing ring 33 can seal the gap between the lower shell 315 and the core 316.

[0052] refer to Figure 3 , Figure 4 and Figure 5 The nozzle 3 also includes a sealing gasket 34. The sealing gasket 34 is disposed between the upper cover 318 and the core 316 to seal the gap between the upper cover 318 and the core 316.

[0053] The core 316 has a fifth channel 3161. The fifth channel 3161 connects the fourth channel 3181 and the first channel 312. The core 316 includes a partition 3162. The partition 3162 divides the fifth channel 3161 into a first sub-channel 31611 and a second sub-channel 31612 arranged radially in the nozzle housing 31. Along the axial direction of the nozzle housing 31, both ends of the first sub-channel 31611 and both ends of the second sub-channel 31612 are respectively connected to the first channel 312 and the fourth channel 3181. The partition 3162 divides the fifth channel 3161 into the first sub-channel 31611 and the second sub-channel 31612, thereby increasing the flow rate of the oil.

[0054] The lower housing 315 has a sixth channel 3151. The sixth channel 3151 connects the oil injection hole 3171 and the first channel 312. Specifically, the sixth channel 3151 is connected to the oil outlet channel 3122.

[0055] The lower housing 315 has a first through hole 3152. At least a portion of the first through hole 3152 has internal threads. The adjusting knob 32 includes a knob portion 321 and a rotating rod 322. A portion of the rotating rod 322 has external threads. The rotating rod 322 is threadedly connected to the housing. Rotating the adjusting knob 32 drives it to move radially along the first channel 312. Along the axial direction of the rotating rod 322, the end of the rotating rod 322 away from the knob portion 321 changes the flow cross-sectional area of ​​the first channel 312, thereby adjusting the injection pressure of the nozzle 3. Along the axial direction of the outer casing, the end of the rotating rod 322 away from the knob part 321 is located between the second channel 3141 and the third channel 3142. When the adjusting knob 32 completely blocks the first channel 312, the oil inlet channel 3121 is connected to the first chamber 313 through the second channel 3141, and the oil outlet channel 3122 is connected to the first channel 312 through the third channel 3142, ensuring that the nozzle 3 can still spray oil when the adjusting knob 32 completely blocks the first channel 312.

[0056] In one embodiment, reference Figure 1 The circulating pump 4 is a variable frequency circulating pump 4. The circulating pump 4 includes a pressure detector. The pressure detector is located at the outlet of the circulating pump 4 to detect the oil outlet pressure of the circulating pump 4. The circulating pump 4 includes a circulating pump controller. The first signal input terminal of the circulating pump controller is electrically connected to the signal output terminal of the pressure detector.

[0057] The circulating pump 4 includes a pump body and a motor. The motor is connected to the pump body to drive the rotor inside the pump body to rotate. The circulating pump 4 includes a frequency converter. The first signal input terminal of the frequency converter is electrically connected to the first signal output terminal of the circulating pump controller. The first signal output terminal of the frequency converter is electrically connected to the motor to change the motor speed.

[0058] The circulating pump 4 is configured as a variable frequency circulating pump 4, and the circulating pump 4 includes a pressure detector, pump body, motor, frequency converter and circulating pump controller, so that the circulating pump 4 itself can change the output frequency of the circulating frequency converter according to the pressure at the outlet of the circulating pump 4, thereby changing the speed of the motor, and can adjust the amount of oil delivered by the circulating pump 4 to ensure the amount of oil on the wire bundle 90.

[0059] In one embodiment, the nozzle 3 has multiple pairs spaced apart along a first direction. Each pair of nozzles 3 corresponds to multiple bundles of filaments 90. The two nozzles 3 in a pair are located above and below the corresponding bundles of filaments 90, respectively, and the two nozzles in a pair are arranged opposite each other, enabling oil to be sprayed onto the bundles of filaments 90 from above and below, ensuring uniform oiling on both sides of the bundles of filaments 90. Specifically, an oil spraying device has 10 pairs of nozzles 3, and each pair of nozzles 3 can correspond to 3 to 5 bundles of filaments 90.

[0060] In one embodiment, reference Figure 1 The tow oiling system also includes at least two sets of nozzle fixing devices 7, which are fixed to the oil receiving tank 5; a pair of nozzles 3 are fixed to different nozzle fixing devices 7. Specifically, there are two nozzle fixing devices 7, and each nozzle fixing device 7 is provided with a row of nozzles 3. The pair of nozzles 3 are arranged opposite to each other on the two nozzle fixing devices 7.

[0061] In one embodiment, reference Figure 6 The nozzle fixing device 7 includes a fixing bracket 71. The fixing bracket 71 is fixedly connected to the oil receiving tank 5. The fixing bracket 71 can be arranged along the extension direction of the oil receiving tank 5.

[0062] refer to Figure 6 The nozzle fixing device 7 may include a connecting rod 72. The connecting rod 72 is connected to the fixing bracket 71. The nozzle fixing device 7 includes a nozzle bracket 73. The nozzle bracket 73 is connected to the connecting rod 72 via a rotating connection mechanism. The nozzle 3 is fixed to the nozzle bracket 73. The nozzle bracket 73 rotates relative to the connecting rod 72 via the rotating connection mechanism to adjust the orientation of the nozzle 3, and the rotating connection mechanism is configured to fix the nozzle 3 and the connecting rod 72 relative to each other after the orientation of the nozzle 3 is adjusted.

[0063] The nozzle bracket 73 is connected to the connecting rod 72 via a rotating connection mechanism, which can adjust the direction of oil spraying so that the nozzle 3 can be adapted to the filament bundle 90 at different positions and tilt angles.

[0064] The axis of the nozzle 3 is adjusted within the range of the first cone angle α, where the first cone angle α ≥ 120°, and the axis of the first cone angle is parallel to the second direction. The second direction is perpendicular to the extension direction of the fixed bracket 71.

[0065] In one embodiment, reference Figure 6The nozzle fixing device 7 includes a first telescopic cylinder 74. The cylinder body of the first telescopic cylinder 74 is fixedly connected to the fixing bracket 71. The first telescopic cylinder 74 extends and retracts along a first direction.

[0066] refer to Figure 6 The nozzle fixing device 7 includes a second telescopic cylinder 75. The cylinder body of the second telescopic cylinder 75 is fixedly connected to the telescopic rod of the first telescopic cylinder 74. The second telescopic cylinder 75 extends and retracts along a second direction. The telescopic rod of the second telescopic cylinder 75 is fixedly connected to the connecting rod 72. The second direction is perpendicular to the first direction.

[0067] A first telescopic cylinder 74 is provided, which can drive the nozzle 3 to move along the extension direction of the water receiving tank, so that the nozzle 3 can be aligned with the filament bundle 90. A second telescopic cylinder 75 is provided, which can drive the nozzle 3 to move in a direction perpendicular to the extension direction of the water receiving tank, and can control the relative distance between the nozzle 3 and the filament bundle 90. A nozzle bracket 73 is provided and connected to the connecting rod 72 through a rotating connecting mechanism, which can adjust the direction of oil spraying so that the nozzle 3 sprays oil directly onto the filament bundle 90. The first telescopic cylinder 74, the second telescopic cylinder 75 and the rotating connecting mechanism can ensure that the oil spraying range is accurately aligned with the filament bundle 90, improve the oiling effect of the filament bundle 90 and improve the oil spraying efficiency.

[0068] The first telescopic cylinder 74 and the second telescopic cylinder 75 are provided to adjust the position of the nozzle 3, and can achieve a displacement adjustment of at least 10 mm in the first direction and the second direction, with a displacement adjustment accuracy of 0.1 mm.

[0069] refer to Figure 6 The nozzle fixing device 7 may include a first guide rod 76. The first guide rod 76 may extend in a second direction. The first guide rod 76 is fixedly connected to the fixing bracket 71. The nozzle bracket 73 is sleeved on the first guide rod 76. The first guide rod 76 is provided to guide the nozzle bracket 73.

[0070] refer to Figure 6 The nozzle fixing device 7 may include a second guide rod 77. The second guide rod 77 may extend along a first direction. The second guide rod 77 is fixedly connected to the fixing bracket 71. The second guide rod 77 guides the second telescopic cylinder 75.

[0071] In some embodiments, the tow oiling system includes a tow detector to detect whether there is a tow 90 between a pair of nozzles 3. When there is a tow 90 between the pair of nozzles 3, the control module 63 controls the nozzles 3 to spray oil onto the tow 90. When there is no tow 90 between the pair of nozzles 3, the control module 63 controls the nozzles 3 not to spray oil, which can reduce oil waste in the absence of tow 90, improve the automation level of the tow oiling system, and reduce manual operation.

[0072] In some embodiments, reference Figure 1 The fiber tow oiling system includes a cleaning device 8. The cleaning device 8 is used to clean the fiber tow 90 using a cleaning solution. The cleaning device 8 is located upstream of the nozzle 3 along the conveying direction of the fiber tow 90. The cleaning device 8 includes a cleaning tank 81. The cleaning tank 81 contains a cleaning solution. The fiber tow 90 is immersed in the cleaning solution during conveying, completing the cleaning process. The cleaning solution can be demineralized water.

[0073] When the cleaning device 8 is located upstream of the nozzle 3, the filament bundle 90 will carry the cleaning liquid into the returning oil, which will reduce the concentration of the oil. Therefore, a concentration detection device 61 and a metering pump 2 are set up so that the speed of the metering pump 2 can be controlled according to the detected oil concentration to ensure that the oil concentration of the oil in the filter chamber 111 is within a suitable range.

[0074] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the disclosure herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and embodiments are to be considered exemplary only, and the true scope and spirit of this application are indicated by the following claims.

[0075] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A tow oiling system, characterized in that, The tow oiling system includes: A filtration device, wherein the filtration device is provided with a filtration chamber for containing oil; A metering pump, the inlet of which is connected to an oil storage chamber, and the outlet of which is connected to a filter chamber, wherein the oil storage chamber is used to store an oil with a higher concentration than the oil in the filter chamber, and the metering pump is used to transport the oil in the oil storage chamber to the filter chamber. An oil spraying device includes a nozzle for spraying oil onto the filament bundle; A circulating pump, the inlet of which is connected to the filter chamber and the outlet of which is connected to the oil inlet of the nozzle, to deliver oil to the nozzle; An oil receiving trough is located below the nozzle and the filament bundle to receive the oil; the oil receiving trough is connected to the filter chamber so that the oil in the oil receiving trough flows back into the filter chamber; A concentration detection device is installed inside the filter chamber to detect the oil concentration of the oil agent inside the filter chamber. The signal output terminal of the concentration detection device is electrically connected to the first signal input terminal of the control module. The metering pump is an adjustable speed metering pump, and the metering pump is electrically connected to the first signal output terminal of the control module.

2. The tow oiling system according to claim 1, characterized in that, The filtration device includes: A filter tank, wherein the filter chamber is provided within the filter tank; A filter screen is inserted into the filter groove and divides the filter chamber into an upper oil chamber and an oil return chamber arranged sequentially along the extension direction of the filter groove; The outlet of the metering pump and the inlet of the circulation pump are both connected to the upper oil chamber, and the return oil chamber is connected to the oil receiving tank; the concentration detection device is located in the upper oil chamber.

3. The tow oiling system according to claim 1, characterized in that, The nozzle includes: The nozzle housing has a first channel formed inside it; the nozzle housing is provided with an oil injection hole and an oil inlet, and both the oil inlet and the oil injection hole are connected to the first channel. An adjustment knob is provided, one end of which is inserted into the nozzle housing and threadedly connected to it. Rotating the adjustment knob drives it to move radially along the first channel to change the flow cross-sectional area of ​​the first channel, thereby adjusting the injection pressure of the nozzle.

4. The tow oiling system according to claim 3, characterized in that, The nozzle housing has a first cavity, a second channel, and a third channel, and the second channel and the third channel both connect the first channel and the first cavity. When the adjustment knob completely blocks the first channel, the adjustment knob divides the first channel into an oil inlet channel and an oil outlet channel. The oil inlet channel is connected to the oil inlet port and is connected to the first cavity through the second channel. The oil outlet channel is connected to the oil injection hole and is connected to the first cavity through the third channel.

5. The tow oiling system according to claim 3, characterized in that, The circulating pump is a variable frequency circulating pump, and the circulating pump includes: A pressure detector is installed at the outlet of the circulating pump to detect the oil outlet pressure of the circulating pump; A circulating pump controller, wherein the first signal input terminal of the circulating pump controller is electrically connected to the signal output terminal of the pressure detector; Pump body; An electric motor is connected to the pump body to drive the rotor inside the pump body to rotate; The inverter has its first signal input terminal electrically connected to the first signal output terminal of the circulating pump controller, and its first signal output terminal electrically connected to the motor to change the speed of the motor.

6. The tow oiling system according to claim 1, characterized in that, The nozzle has multiple pairs spaced apart along a first direction, each pair of nozzles corresponding to multiple bundles of filaments, with the two nozzles in a pair located above and below the filaments corresponding to that pair of nozzles, and the two nozzles in a pair arranged opposite to each other.

7. The tow oiling system according to claim 6, characterized in that, The filament oiling system also includes at least two sets of nozzle fixing devices, which are fixed on the oil receiving groove; the two nozzles in a pair are fixed on different nozzle fixing devices.

8. The tow oiling system according to claim 7, characterized in that, The nozzle fixing device includes: A fixed bracket is fixedly connected to the oil receiving groove; The connecting rod is connected to the fixed bracket; The nozzle bracket is connected to the connecting rod via a rotating connection mechanism; The nozzle is fixed to the nozzle bracket; The nozzle bracket rotates relative to the connecting rod via the rotary connecting mechanism to adjust the orientation of the nozzle, and the rotary connecting mechanism is configured to fix the nozzle and the connecting rod relative to each other after the orientation of the nozzle is adjusted.

9. The tow oiling system according to claim 8, characterized in that, The nozzle fixing device also includes: A first telescopic cylinder, the cylinder body of which is fixedly connected to the fixed bracket, extends and retracts along a first direction; The second telescopic cylinder has its cylinder body fixedly connected to the telescopic rod of the first telescopic cylinder. The second telescopic cylinder extends and retracts along a second direction, and the telescopic rod of the second telescopic cylinder is fixedly connected to the connecting rod. The second direction is perpendicular to the first direction.

10. The tow oiling system according to claim 1, characterized in that, The tow oiling system also includes: A cleaning device is used to clean the filament bundle using a cleaning solution; the cleaning device is located upstream of the nozzle along the conveying direction of the filament bundle.

Images