Ultrathin carbon fiber bundle spreading equipment combining ultrasonic mechanical vibration and air blowing

Abstract

The invention relates to the technical field of prepreg tape production, in particular to ultra-thin carbon fiber bundle filament spreading equipment combining ultrasonic mechanical vibration and air blowing, which comprises an ultrasonic filament spreading device and a mechanical vibration air blowing filament spreading device, the ultrasonic filament spreading device comprises an inverted open frustum-shaped box body, one or more ultrasonic generators mounted on the side wall of the box body, and four independently-driven guide rollers of the same structure, the ends of the guide rollers are mounted on the front side wall and the rear side wall of the box body, and roller bodies of the guide rollers are located in the box body; a sealing device is installed at the joint of each guide roller and the front side wall and the rear side wall of the box body, under the action of ultrasonic waves and ultrasonic media, carbon fiber bundles are expanded through different rotating speeds of the four independently-driven guide rollers, and the rotating speeds of the four independently-driven guide rollers are sequentially increased in the conveying direction of the carbon fiber bundles.

Description

Technical Field

[0001] The present invention relates to the technical field of prepreg tape production, and in particular to an ultra-thin carbon fiber bundle unwinding device combining ultrasonic mechanical vibration and air blowing. Background Art

[0002] A prepreg tape is a composite material in which a reinforcing material (such as carbon fiber and glass fiber) is pre-impregnated with a resin. This material can achieve a uniform resin distribution during the manufacturing process, thereby improving the performance of the final product. An ultra-thin prepreg tape refers to a composite intermediate with a thickness less than 0.1 mm (some can reach below 0.06 mm), which is made by combining continuous fibers (such as carbon fiber and glass fiber) with a resin through a high-precision process. Compared with traditional prepreg tapes, it has the characteristics of being lighter and more flexible, and still exhibits excellent strength and stiffness with less material usage. Traditional prepreg tape unwinding devices perform poorly in the unwinding effect of carbon fibers, which will directly affect the subsequent material impregnation process and the strength of the final product, thereby reducing the service performance of the prepreg tape.

[0003] Some enterprises have achieved the production of ultra-thin prepreg tapes through self-developed equipment. For example, Shandong Blue Science and Technology developed a prepreg with a fiber surface weight of 6 g / m² and ensured batch stability. However, it still cannot meet the requirements for thinner prepreg tapes and better performance. Summary of the Invention

[0004] The technical problem to be solved by the present invention is: how to provide an ultra-thin carbon fiber bundle unwinding device combining ultrasonic mechanical vibration and air blowing to solve the problems of poor unwinding effect of carbon fibers and poor strength of prepreg tapes in the prior art.

[0005] The technical solution adopted by the present invention is: an ultra-thin carbon fiber bundle unwinding device combining ultrasonic mechanical vibration and air blowing, which includes an ultrasonic unwinding device and a mechanical vibration air blowing unwinding device. The ultrasonic unwinding device includes an inverted open frustum-shaped box body (43), one or more ultrasonic generators (44) installed on the side wall of the box body (43), and four independently driven guide rollers (45) with the same structure, whose ends are installed on the front and rear side walls of the box body (43) and the roller bodies are inside the box body (43). The box body (43) is filled with ultrasonic medium. A sealing device (46) is installed at the connection of each guide roller (45) and the front and rear side walls of the box body (43). Under the action of ultrasonic waves and ultrasonic medium, the carbon fiber bundle is expanded by the different rotation speeds of the four independently driven guide rollers (45). Along the transmission direction of the carbon fiber bundle, the rotation speeds of the four independently driven guide rollers (45) increase in sequence. The mechanical vibration air blowing unwinding device includes a support component, a vibration unwinding component and an air blowing unwinding component. The support component is used to support the vibration unwinding component and the air blowing unwinding component. The vibration unwinding component includes a wire comb component, a wire roller component, a longitudinal vibration unwinding component, a transverse vibration unwinding component and a sponge machine roller component arranged in sequence. The air blowing unwinding device includes a triangular fixing block (19), a blowing frame support column (17), a blowing frame cross beam (18), a blowing frame slide bar fixing block (20), a blowing frame slide bar (21), a nozzle frame slider (22), a nozzle frame (30), a nozzle slide bar (31), a nozzle slider (32), and an air flow distributor (33). Among them, there are four blowing frame support columns with the same height. The projections of the four blowing frame support columns on the same horizontal plane form a rectangle. The four blowing frame support columns are respectively fixed on the support component through a triangular fixing block. There are two parallel blowing frame cross beams. The two ends of each blowing frame cross beam are respectively fixedly connected to the top of a blowing frame support column. Each blowing frame cross beam is perpendicular to the transmission direction of the carbon fiber bundle. There are two parallel blowing frame slide bars (21). Each blowing frame slide bar is fixed on the two blowing frame cross beams through a blowing frame slide bar fixing block. Each blowing frame slide bar is perpendicular to the blowing frame cross beam. There are two nozzle frames (30) and two nozzle frame sliders (22). One nozzle frame is fixed on each blowing frame slide bar through a nozzle frame slider. The two nozzle frames are connected by a nozzle slide bar (31). The nozzle slide bar (31) is perpendicular to each blowing frame slide bar. The nozzle slider (32) is slidably connected and installed on the nozzle slide bar (31). The air flow distributor (33) is installed on the nozzle slider (32). The nozzle is installed on the nozzle slider (32) or the air flow distributor (33).

[0006] The support component includes table legs (1), long rib plates (2), short rib plates (3), fixed lugs (4), and a table board (5). Among them, the four table legs (1) are distributed on the lower sides of the four corners of the table board (5). The long rib plates (2) and the short rib plates (3) are distributed among the table legs to form a stable structure. The four fixed lugs (4) are used to fix the table legs (1) on the ground.

[0007] The spreading comb assembly includes a spreading comb support frame (6), spreading comb side plates (7), a spreading comb (8), spreading pins (9), and a spreading comb guide roller (10). There are two spreading comb side plates (7) and two spreading comb support frames (6). Each spreading comb support frame (6) is an L-shaped support frame. The two spreading comb support frames are symmetrically fixed on the support assembly and are located on both sides of the support assembly. Each spreading comb support frame fixes one spreading comb side plate. The two spreading comb side plates are symmetrically structured. The spreading comb (8) and the spreading comb guide roller (10) are fixed on the two spreading comb side plates in a parallel structure. A plurality of upward spreading pins are installed in a parallel structure at the central position of the spreading comb (8). The spreading comb guide roller (10) is independently driven.

[0008] The spreading roller assembly includes a spreading roller driving roller (14), a spreading roller driven roller (15), a spreading roller support (12), a driving roller slider (38), a driven roller slider (39), a top slider (41), a handwheel (35), a tension sensor (16), a tension sensor base (23), an auxiliary roller base (24), and an auxiliary roller (42). There are two spreading roller supports (12) which are symmetrically installed on both sides of the support assembly. Each spreading roller support has a rectangular through hole, and the rectangular through holes on the two spreading roller supports face each other. Guide rails are installed on both sides of each rectangular through hole, and there is a threaded through hole at the center of the top of each rectangular through hole. There are two driving roller sliders (38). Each driving roller slider has guide grooves on both sides that cooperate with the guide rails. Each driving roller slider is installed at the lower end of a rectangular through hole through the cooperation of the guide rails and guide grooves. The two ends of the spreading roller driving roller (14) are respectively fixed on a driving roller slider. There are two of each of the handwheel (35), the driven roller slider (39), and the top slider (41). Each handwheel and a top slider are connected by a stud. Each stud passes through a threaded through hole. Each top slider is connected to a driven roller slider. Each driven roller slider and top slider have guide grooves on both sides that cooperate with the guide rails. Each driven roller slider and top slider are installed in a rectangular through hole through the cooperation of the guide rails and guide grooves, and the driven roller slider is located below the top slider. The two ends of the spreading roller driven roller (15) are respectively fixed on a driven roller slider. There are two tension sensor bases (23) which are symmetrically fixed on both sides of the support assembly. The tension sensor (16) is a tension roller with a torque sensor. The two ends of the tension roller are respectively installed on a tension sensor base. The tension roller is lower than the spreading roller driving roller (14) and the auxiliary roller (42) horizontally. There are two auxiliary roller bases (24) which are symmetrically installed on both sides of the support assembly. The two ends of the auxiliary roller (42) are respectively fixed on an auxiliary roller base. The spreading roller support (12), the tension sensor base (23), and the auxiliary roller base (24) are arranged in sequence along the carbon fiber bundle transmission direction.

[0009] The longitudinal vibration wire spreading assembly includes a longitudinal vibration motor (11), a longitudinal vibration motor base (25), and a concentric vibration roller (13). Among them, there are two longitudinal vibration motor bases (25) which are symmetrically installed on both sides of the support assembly. The concentric vibration roller (13) includes 3 vibration rollers. The two ends of the 3 vibration rollers are respectively installed on a longitudinal vibration motor base. The longitudinal vibration motor (11) is installed on a longitudinal vibration motor base and is connected to the 3 vibration rollers to provide longitudinal vibration for the 3 vibration rollers. The cross-section of the 3 vibration rollers is such that the center connection line forms an equilateral triangle.

[0010] The transverse vibration wire spreading assembly includes a crank and slotted lever mechanism (34), a cushion block (29), a guide sleeve device (40), a Mayer rod driving roller (26), a Mayer rod driven roller (28), and a Mayer rod base (27); the crank and slotted lever mechanism (34) is fixed to one side of the support assembly through the cushion block (29). The crank and slotted lever mechanism includes a rotating pair, a connecting rod connecting the rotating pairs, a limiting device, and a linear reciprocating guide rod. There is a limiting hole on the limiting device. The guide sleeve device (40) includes a guide sleeve support plate and a guide sleeve hole on the guide sleeve support plate. The two ends of the linear reciprocating guide rod are respectively located in the limiting hole and the guide sleeve hole. The connecting rod connected to the linear reciprocating guide rod drives the linear reciprocating guide rod to perform linear reciprocating motion under the drive of the rotating pair. The linear reciprocating guide rod is perpendicular to the moving direction of the fiber bundle. There are two Mayer rod bases (27) which are symmetrically installed on both sides of the support assembly. The two ends of the Mayer rod driving roller (26) and the Mayer rod driven roller (28) are respectively fixed to a Mayer rod base. The Mayer rod driving roller (26) and the Mayer rod driven roller (28) are in an up-and-down structure, and during the working process, the Mayer rod driving roller (26) rotates clockwise and the Mayer rod driven roller (28) rotates counterclockwise.

[0011] The sponge roller assembly includes a sponge roller (36) and a sponge roller base (37). There are two sponge roller bases (37) which are symmetrically and fixedly installed on both sides of the support assembly. The sponge roller (36) is composed of two parallel rollers arranged symmetrically up and down. The two ends of each sponge roller are fixedly connected to a sponge roller base. During the working process, the upper sponge roller rotates counterclockwise and the lower sponge roller rotates clockwise.

[0012] The beneficial effects of the present invention are as follows: The present invention combines the common advantages of ultrasonic wire spreading, mechanical vibration wire spreading, and air blowing wire spreading. By adopting the combination of the three, it can not only achieve an ideal wire spreading effect but also reduce the phenomenon of fiber breakage caused by mechanical vibration wire spreading. In the subsequent processing, broken fibers are further removed through the cotton roller, thereby providing an excellent fiber arrangement for subsequent impregnation.

[0013] The present invention adopts the design concept of multi-stage fiber spreading. Compared with traditional single fiber spreading equipment, it can effectively disperse fiber bundles, improve the fiber spreading speed, reduce the entanglement and aggregation between fibers, thereby ensuring that the fibers are more uniform during the processing and ensuring the excellent performance of the prepreg tape.

[0014] The present invention not only has good fiber spreading effect and simple structure, but also is convenient to install. This design significantly reduces material waste through an efficient fiber spreading process, and at the same time saves energy consumption, thus achieving good economic benefits.

[0015] The present invention can adjust the vibration frequency and air flow intensity according to different types of fibers and production requirements to meet the fiber spreading requirements of various materials, and has good adaptability.

[0016] The fiber spreading process provided by the present invention has obvious improvements in terms of fiber spreading width and fiber breakage rate compared with the existing process, so it is more reasonable than the existing traditional process. Brief Description of the Drawings

[0017] Figure 1 is a schematic structural diagram of the assembled mechanical vibration and air blowing parts of the present invention; Figure 2 is a front view schematic diagram of the structure of the mechanical vibration and air blowing parts of the present invention; Figure 3 is Figure 2 a magnified schematic diagram of the front half part in Figure 4 is a rear view schematic diagram of the combined structure of the mechanical vibration and air blowing of the present invention; Figure 5 is a schematic structural diagram of the assembled ultrasonic fiber spreading part of the present invention; Figure 6 is a schematic diagram of the fiber spreading process of the present invention; Figure 7 is a specific implementation plan view of the fiber spreading process of the present invention.

[0018] Among them, 1. Table leg; 2. Long rib plate; 3. Short rib plate; 4. Fixed lug; 5. Table board; 6. Filament spreading comb support frame; 7. Filament spreading comb side plate; 8. Filament spreading comb; 9. Filament spreading nail; 10. Filament spreading comb guide roller; 11. Longitudinal vibration motor; 12. Master-slave roller support; 13. Concentric vibration machine roller; 14. Filament spreading roller driving roller; 15. Filament spreading roller driven roller; 16. Tension sensor; 17. Blowing rack support pillar; 18. Blowing rack cross beam; 19. Triangular fixing block; 20. Blowing rack slide bar fixing block; 21. Blowing rack slide bar; 22. Nozzle holder slider; 23. Tension sensor base; 24. Auxiliary roller base; 25. Longitudinal vibration motor base; 26. Meyer rod driving roller; 27. Meyer rod base; 28. Meyer rod driven roller; 29. Spacer block; 30. Nozzle holder; 31. Nozzle slide bar; 32. Nozzle slider; 33. Air flow distributor; 34. Crank guide bar mechanism; 35. Hand wheel; 36. Sponge roller; 37. Sponge roller base; 38. Driving roller slider; 39. Driven roller slider; 40. Guide sleeve device; 41. Top slider; 42. Auxiliary roller; 43. Box body; 44. Ultrasonic emitter; 45. Guide roller; 46. Sealing ring; 47. Carbon fiber bundle to be spread; 48. Initial guide roller; 49. Nozzle. Detailed implementation mode

[0019] An ultra-thin carbon fiber bundle filament spreading device combining ultrasonic mechanical vibration and air blowing, as Figures 1 to 7 shown, includes an ultrasonic filament spreading device, a drying device and a mechanical vibration air blowing filament spreading device. Among them, the drying device adopts the existing technology and uses multiple jet devices to spray high-temperature inert gas for drying. In the present invention, the drying device is not the invention point of the present invention and adopts the existing technology, so no more description is made.

[0020] In this embodiment, the ultrasonic filament spreading device includes an inverted open frustum-shaped box body 43, one or more ultrasonic generators 44 installed on the side wall of the box body 43, and four independently driven identical-structured guide rollers 45 with their ends installed on the front and rear side walls of the box body 43 and their roller bodies inside the box body 43.

[0021] The box body 43 is an inverted open frustum shape with a small bottom and a large mouth, which is convenient for the carbon fiber bundle (carbon fiber bundle 47 to be spread) to enter under the action of the initial guide roller 48 and then leave after ultrasonic filament spreading. The specific size selection of the box body 43 is related to the length of the initial guide roller 48, and it is necessary to ensure that the width of the carbon fiber bundle after filament spreading is less than the length of the guide roller 45.

[0022] The box body 43 is filled with an ultrasonic medium, which is water in one embodiment. A sealing device 46 is installed at the connection of each guide roller and the front and rear side walls of the box body 43. The sealing device 46 adopts an existing sealing device, which needs to meet the requirements of no liquid leakage and no influence on the rotation of each guide roller. Each guide roller is parallel to the horizontal plane. The independent driving device of each guide roller is not shown in the figure because the technology of driving the guide roller to rotate alone already exists in the prior art, such as using a motor drive. There are also some technologies that are not invention points but already exist in the prior art and are not shown in the figure, such as the two ends of the guide roller need to be installed on the side wall of the box body 43 through bearings. This will not be described in detail in the present invention, but those skilled in the art know how to implement it.

[0023] Under the action of ultrasonic waves and the ultrasonic medium, the carbon fiber bundle is expanded by the different rotation speeds of four independently driven guide rollers 45. Along the transmission direction of the carbon fiber bundle, the rotation speeds of the four independently driven guide rollers 45 increase in sequence, and their speed control depends on different types of carbon fiber bundles. Under the condition of keeping the carbon fiber bundle unbroken, the maximum speed difference is adopted. In one embodiment, three ultrasonic transmitters are located in the middle of three sides of the box body, and the ultrasonic medium can be flexibly arranged according to needs, such as using water. When expanding the carbon fiber bundle by the different rotation speeds of four independently driven guide rollers, a thinner carbon fiber bundle can be obtained compared with guide rollers with the same speed, and the strength of the carbon fiber can be kept almost the same as that of the carbon fiber bundle obtained by guide rollers with the same speed.

[0024] The mechanical vibration air-blowing wire spreading device includes a support assembly, a vibration wire spreading assembly, and an air-blowing wire spreading assembly. The support assembly is used to provide support for the vibration wire spreading assembly and the air-blowing wire spreading assembly. The vibration wire spreading assembly includes a wire spreading comb assembly, a wire spreading roller assembly, a longitudinal vibration wire spreading assembly, a transverse vibration wire spreading assembly, and a sponge machine roller assembly arranged in sequence.

[0025] As Figure 2 shown, the support assembly is welded by table legs 1, long rib plates 2, short rib plates 3, fixed lugs 4, and a table board 5. Among them, the four table legs 1 are distributed at the four corners of the table board 5, and the long rib plates 2 and short rib plates 3 are distributed between the table legs to form a stable structure. The four fixed lugs 4 are respectively welded to the bottoms of the table legs. The purpose of the support assembly in the present invention is to provide a support platform. The table board 5 as described above is a horizontal platform, and other components are for maintaining the stability of the table board 5. The mechanical vibration air-blowing wire spreading device in the present invention is installed on the table board 5. Fixing on the support assembly as described in the present invention means fixing on the table board 5.

[0026] The air-blowing filament spreading device includes a triangular fixing block 19, a blowing frame support column 17, a blowing frame cross beam 18, a blowing frame slide bar fixing block 20, a blowing frame slide bar 21, a nozzle frame slider 22, a nozzle frame 30, a nozzle slide bar 31, a nozzle slider 32, and an air flow distributor 33. The triangular fixing block 19 is for fixation, and other fixing methods can also be used.

[0027] Among them, the blowing frame support columns are four columns with the same height. The projections of the four blowing frame support columns on the same horizontal plane form a rectangle. The four blowing frame support columns are respectively fixed on the table board 5 through a triangular fixing block. The blowing frame cross beams are two parallel ones, and each cross beam is a horizontal column (the cross section can be circular, rhombic, etc.). The two ends of each blowing frame cross beam are respectively fixedly connected to the top of a blowing frame support column. Each blowing frame cross beam is perpendicular to the carbon fiber bundle conveying direction. There are two parallel blowing frame slide bars 21. Each blowing frame slide bar is fixed on the two blowing frame slide bars through a blowing frame slide bar fixing block. The blowing frame slide bar fixing block is just a fixing device, and other existing methods can also be used for fixation. Each blowing frame slide bar is perpendicular to the blowing frame slide bar. There are two nozzle frames 30 and two nozzle frame sliders 22. One nozzle frame is fixed on each blowing frame slide bar through a nozzle frame slider. The two nozzle frames are connected by a nozzle slide bar 31. The nozzle slide bar 31 is perpendicular to each blowing frame slide bar. The nozzle slider 32 is slidably connected and installed on the nozzle slide bar 31. The air flow distributor 33 is installed on the nozzle slider 32. The nozzle is installed on the nozzle slider 32 or the air flow distributor 33.

[0028] The purpose of the air-blowing filament spreading device is to blow the carbon fiber bundle. The gas ejected from the nozzle is a mixture of inert gas and water vapor. It is required to keep the humidity of the air within a suitable range (the humidity of carbon fiber bundles with different components is different) to make the flexibility of the carbon fiber bundle reach the best.

[0029] As Figure 3 shown, the filament spreading comb assembly includes a filament spreading comb support frame 6, a filament spreading comb side plate 7, a filament spreading comb 8, filament spreading nails 9, and a filament spreading comb guide roller 10.

[0030] There are two spreading comb side plates 7 and two spreading comb support frames 6 respectively. Each spreading comb support frame 6 is an L-shaped support frame. The two spreading comb support frames are symmetrically fixed on the table board 5 and are on both sides of the table board 5 (both sides of the carbon fiber ribbon). Each spreading comb support frame fixes a spreading comb side plate. The two spreading comb side plates are symmetrically structured (with respect to the midline of the carbon fiber ribbon). The spreading comb 8 and the spreading comb guide roller 10 are fixed on the two spreading comb side plates in a parallel structure (along the carbon fiber bundle transmission direction, the spreading comb 8 and the spreading comb guide roller 10 are arranged in sequence). A plurality of upward spreading pins are installed in a parallel structure at the central position of the spreading comb 8. The spreading comb guide roller 10 is independently driven. The spreading comb 8 divides the carbon fiber bundle into several small bundles to position the carbon fiber bundle and prevent the carbon fiber bundle from being entangled due to subsequent vibration and the like.

[0031] The spreading roller assembly includes a spreading roller driving roller 14, a spreading roller driven roller 15, a spreading roller support 12, a driving roller slider 38, a driven roller slider 39, a top slider 41, a handwheel 35, a tension sensor 16, a tension sensor base 23, an auxiliary roller base 24, and an auxiliary roller 42. There are two spreading roller supports 12 and they are symmetrically installed on both sides of the table board 5. Each spreading roller support has a rectangular through hole and the rectangular through holes on the two spreading roller supports face each other. Guide rails are installed on both sides of each rectangular through hole. There is a threaded through hole at the center of the top of each rectangular through hole. There are two driving roller sliders 38. Each driving roller slider has guide grooves on both sides that cooperate with the guide rails. Each driving roller slider is installed at the lower end of a rectangular through hole through the cooperation of the guide rail and the guide groove. The two ends of the spreading roller driving roller 14 are respectively fixed on a driving roller slider. There are two of each of the handwheel 35, the driven roller slider 39, and the top slider 41. Each handwheel and a top slider are connected by a stud. Each stud passes through a threaded through hole. Each top slider is connected to a driven roller slider. Each driven roller slider and the top slider have guide grooves on both sides that cooperate with the guide rails. Each driven roller slider and the top slider are installed in a rectangular through hole through the cooperation of the guide rail and the guide groove and the driven roller slider is below the top slider. The two ends of the spreading roller driven roller 15 are respectively fixed on a driven roller slider. There are two tension sensor bases 23 and they are symmetrically fixed on both sides of the support assembly. The tension sensor 16 is a tension roller with a torque sensor. The two ends of the tension roller are respectively installed on a tension sensor base. The tension roller is lower than the spreading roller driving roller 14 and the auxiliary roller 42 in the horizontal direction. There are two auxiliary roller bases 24 and they are symmetrically installed on both sides of the support assembly. The two ends of the auxiliary roller 42 are respectively fixed on an auxiliary roller base. The spreading roller support 12, the tension sensor base 23, and the auxiliary roller base 24 are arranged in sequence along the carbon fiber bundle transmission direction.

[0032] The longitudinal vibration wire spreading assembly includes a longitudinal vibration motor 11, a longitudinal vibration motor base 25, and a concentric vibration machine roller 13. Among them, there are two longitudinal vibration motor bases 25, which are symmetrically installed on both sides of the support assembly. The concentric vibration machine roller 13 includes 3 vibration machine rollers. The two ends of the 3 vibration machine rollers are respectively installed on a longitudinal vibration motor base. The longitudinal vibration motor 11 is installed on a longitudinal vibration motor base and is connected to the 3 vibration machine rollers to provide longitudinal vibration to the 3 vibration machine rollers. The cross-section of the 3 vibration machine rollers is such that the center connection line forms an equilateral triangle.

[0033] The transverse vibration wire spreading assembly includes a crank-slider mechanism 34, a cushion block 29, a guide sleeve device 40, a Mayer rod driving roller 26, a Mayer rod driven roller 28, and a Mayer rod base 27. The crank-slider mechanism 34 is fixed to one side of the support assembly through the cushion block 29. The crank-slider mechanism includes a rotating pair, a connecting rod connecting the rotating pairs, a limiting device, and a linear reciprocating guide rod. There is a limiting hole on the limiting device. The guide sleeve device 40 includes a guide sleeve support plate and a guide sleeve hole on the guide sleeve support plate. The two ends of the linear reciprocating guide rod are respectively located in the limiting hole and the guide sleeve hole. The connecting rod connected to the linear reciprocating guide rod drives the linear reciprocating guide rod to perform linear reciprocating motion under the drive of the rotating pair. The linear reciprocating guide rod is perpendicular to the moving direction of the fiber bundle. There are two Mayer rod bases 27, which are symmetrically installed on both sides of the support assembly. The two ends of the Mayer rod driving roller 26 and the Mayer rod driven roller 28 are respectively fixed to a Mayer rod base. The Mayer rod driving roller 26 and the Mayer rod driven roller 28 are in an up-and-down structure, and during the working process, the Mayer rod driving roller 26 rotates clockwise and the Mayer rod driven roller 28 rotates counterclockwise.

[0034] The sponge machine roller assembly includes a sponge roller 36 and a sponge roller base 37. There are two sponge roller bases 37, which are symmetrically and fixedly installed on both sides of the support assembly. The sponge roller 36 is composed of two parallel rollers arranged symmetrically up and down. The two ends of each sponge roller are fixedly connected to a sponge roller base. During the working process, the upper sponge roller rotates counterclockwise and the lower sponge roller rotates clockwise.

[0035] As Figure 6 、 Figure 7 shown, the wire spreading process is as follows: First, ultrasonic wire spreading completely realizes the debundling of fibers to facilitate subsequent mechanical vibration combined with air blowing for wire spreading. Subsequently, it enters the air flow drying and then enters the wire spreading comb to fix the position of the fiber bundle and prevent the fiber bundle from crossing during subsequent vibration. Then it enters the longitudinal vibration to continuously pat the fiber bundle. While performing longitudinal vibration, air blowing is applied on the same side during patting to further disperse the fiber bundle for subsequent spreading. Then it enters the transverse vibration to widen and evenly distribute the fiber bundle. Subsequently, the Mayer rod and the machine roller fix the spread fiber bundle to prevent it from reverting. Then a secondary mechanical vibration combined with air blowing wire spreading process is carried out. Finally, the broken wires are removed by the cotton roller and then wound up to obtain the fiber wire that meets the widening requirements.

[0036] Before use, manually pass the 12K carbon fiber bundle through the guide roller 45 first. In this embodiment, the ultrasonic medium is water and the ultrasonic frequency is 20 kHz. Then pass it through the drying air flow of 5 m / s. Subsequently, divide the fiber bundle into several small bundles and pass them through the spreading pins 9 to position the fiber bundle and prevent tangling of the fiber bundle caused by subsequent vibration. Then pass the fiber bundle through the middle of the driving roller 14 and the driven roller 15 of the spreading roller, adjust the gap between the driving and driven rollers to 0.5 mm, and at the same time set the rotational speed parameter of the driving roller 14 of the spreading roller to 2 m / min. Then pass the fiber bundle through the lower part of the tension sensor 16 and the upper part of the auxiliary roller 42. Then pass the fiber bundle through the lower part of the longitudinal vibration concentric machine roller 13, set the rotational speed of the machine roller to 10 r / s. The concentric machine roller can increase the frequency and can pat the fiber bundle multiple times when the motor rotates one circle. The number of axes of concentricity can be selected according to the actual situation. The purpose of longitudinal vibration spreading first is to disperse the fiber bundle first for better transverse vibration spreading. Then pass the fiber bundle through the upper part of the transverse vibration crank-slider mechanism to achieve transverse vibration spreading of the fiber bundle. The transverse vibration frequency is set to 5 Hz. Then pass the fiber bundle through the middle of the driving roller 26 and the driven roller 28 of the Meyer rod to achieve the effect of fixing the spreading and prevent the fiber bundle from recovering and tangling. Then pass the fiber bundle through the middle of the driving roller and the driven roller to control the tension. Then pass the fiber bundle through the upper part of the driven roller to adjust the direction of the fiber bundle entering the next-stage vibration spreading. After secondary longitudinal and transverse vibration spreading, pass the fiber bundle through the middle of the two cotton rollers to remove broken fibers. Then adjust the nozzle angle and set the air flow parameter to 8 m / s. Finally, pass the fiber bundle through the cotton roller to remove broken wires and connect it to the winding roller. Finally, after measurement, the fiber bundle is widened to 4.5 times the original width.

[0037] The above are only embodiments of the present invention. Specific technical solutions and / or common knowledge such as characteristics well known in the art are not described in detail herein. It should be noted that for those skilled in the art, without departing from the technical solution of the present invention, several deformations and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the implementation effect of the present invention and the practicability of the patent. The protection scope required by this application should be based on the content of its claims, and the specific implementation manners described in the specification can be used to interpret the content of the claims.

Claims

1. An ultra-thin carbon fiber bundle unwinding device combining ultrasonic mechanical vibration and air blowing, characterized in that: It includes an ultrasonic filament spreading device and a mechanical vibration air-blowing filament spreading device. The ultrasonic filament spreading device includes an inverted open frustum-shaped box body (43), one or more ultrasonic generators (44) installed on the side wall of the box body (43), and four independently driven guide rollers (45) with the same structure, whose ends are installed on the front and rear side walls of the box body (43) and the roller bodies are inside the box body (43). The box body (43) is filled with an ultrasonic medium. A sealing device (46) is installed at the connection of each guide roller (45) and the front and rear side walls of the box body (43). Under the action of ultrasonic waves and the ultrasonic medium, the carbon fiber bundle is expanded by the different rotation speeds of the four independently driven guide rollers (45). Along the conveying direction of the carbon fiber bundle, the rotation speeds of the four independently driven guide rollers (45) increase in sequence. The mechanical vibration air-blowing filament spreading device includes a support assembly, a vibration filament spreading assembly, and an air-blowing filament spreading assembly. The support assembly is used to support the vibration filament spreading assembly and the air-blowing filament spreading assembly. The vibration filament spreading assembly includes a filament spreading comb assembly, a filament spreading roller assembly, a longitudinal vibration filament spreading assembly, a transverse vibration filament spreading assembly, and a sponge machine roller assembly arranged in sequence. The air-blowing filament spreading device includes a triangular fixing block (19), a blowing frame support column (17), a blowing frame cross beam (18), a blowing frame slide bar fixing block (20), a blowing frame slide bar (21), a blowing nozzle frame slider (22), a blowing nozzle frame (30), a blowing nozzle slide bar (31), a blowing nozzle slider (32), and an air flow distributor (33). Among them, there are four blowing frame support columns with the same height. The projections of the four blowing frame support columns on the same horizontal plane form a rectangle. The four blowing frame support columns are respectively fixed on the support assembly through a triangular fixing block. There are two parallel blowing frame cross beams. The two ends of each blowing frame cross beam are respectively fixedly connected to the top of a blowing frame support column. Each blowing frame cross beam is perpendicular to the conveying direction of the carbon fiber bundle. There are two parallel blowing frame slide bars (21). Each blowing frame slide bar is fixed on the two blowing frame slide bars through a blowing frame slide bar fixing block. Each blowing frame slide bar is perpendicular to the blowing frame slide bar. There are two blowing nozzle frames (30) and two blowing nozzle frame sliders (22). One blowing nozzle frame is fixed on each blowing frame slide bar through a blowing nozzle frame slider. The two blowing nozzle frames are connected by a blowing nozzle slide bar (31). The blowing nozzle slide bar (31) is perpendicular to each blowing frame slide bar. The blowing nozzle slider (32) is slidably connected and installed on the blowing nozzle slide bar (31). The air flow distributor (33) is installed on the blowing nozzle slider (32). The blowing nozzle is installed on the blowing nozzle slider (32) or the air flow distributor (33).

2. The ultra-thin carbon fiber bundle unwinding device combining vibration and air blowing according to claim 1, characterized in that: The support assembly includes table legs (1), long rib plates (2), short rib plates (3), fixed lugs (4), and a table board (5). Among them, the four table legs (1) are distributed on the lower sides of the four corners of the table board (5). The long rib plates (2) and the short rib plates (3) are distributed among the table legs to form a stable structure. The four fixed lugs (4) are used to fix the table legs (1) to the ground.

3. The ultra-thin carbon fiber bundle unwinding device combining vibration and air blowing according to claim 1, characterized in that: The spreading comb assembly includes a spreading comb support frame (6), spreading comb side plates (7), a spreading comb (8), spreading pins (9), and a spreading comb guide roller (10). There are two spreading comb side plates (7) and two spreading comb support frames (6). Each spreading comb support frame (6) is an L-shaped support frame. The two spreading comb support frames are symmetrically fixed on the support assembly and are located on both sides of the support assembly. Each spreading comb support frame fixes one spreading comb side plate, and the two spreading comb side plates are symmetrically structured. The spreading comb (8) and the spreading comb guide roller (10) are fixed on the two spreading comb side plates in a parallel structure. A plurality of upward spreading pins are installed in a parallel structure at the central position of the spreading comb (8). The spreading comb guide roller (10) is independently driven.

4. The ultra-thin carbon fiber bundle unwinding device combining vibration and air blowing according to claim 1, characterized in that: The spreading roller assembly includes a spreading roller driving roller (14), a spreading roller driven roller (15), a spreading roller support (12), a driving roller slider (38), a driven roller slider (39), a top slider (41), a handwheel (35), a tension sensor (16), a tension sensor base (23), an auxiliary roller base (24), and an auxiliary roller (42). There are two spreading roller supports (12) which are symmetrically installed on both sides of the support assembly. Each spreading roller support has a rectangular through-hole, and the rectangular through-holes on the two spreading roller supports face each other. Guide rails are installed on both sides of each rectangular through-hole, and there is a threaded through-hole at the central position of the top of each rectangular through-hole. There are two driving roller sliders (38). Each driving roller slider has guide grooves on both sides that cooperate with the guide rails. Each driving roller slider is installed at the lower end of a rectangular through-hole through the cooperation of the guide rails and guide grooves. The two ends of the spreading roller driving roller (14) are respectively fixed on a driving roller slider. There are two of each of the handwheel (35), the driven roller slider (39), and the top slider (41). Each handwheel and a top slider are connected by a stud. Each stud passes through a threaded through-hole. Each top slider is connected to a driven roller slider. Each driven roller slider and top slider have guide grooves on both sides that cooperate with the guide rails. Each driven roller slider and top slider are installed in a rectangular through-hole through the cooperation of the guide rails and guide grooves, and the driven roller slider is located below the top slider. The two ends of the spreading roller driven roller (15) are respectively fixed on a driven roller slider. There are two tension sensor bases (23) which are symmetrically fixed on both sides of the support assembly. The tension sensor (16) is a tension roller with a torque sensor. The two ends of the tension roller are respectively installed on a tension sensor base. The tension roller is lower than the spreading roller driving roller (14) and the auxiliary roller (42) in the horizontal direction. There are two auxiliary roller bases (24) which are symmetrically installed on both sides of the support assembly. The two ends of the auxiliary roller (42) are respectively fixed on an auxiliary roller base. The spreading roller support (12), the tension sensor base (23), and the auxiliary roller base (24) are arranged in sequence along the carbon fiber bundle transmission direction.

5. The ultra-thin carbon fiber bundle unwinding device combining vibration and air blowing according to claim 1, characterized in that: The longitudinal vibration wire spreading assembly includes a longitudinal vibration motor (11), a longitudinal vibration motor base (25), and a concentric vibration machine roller (13). Among them, there are two longitudinal vibration motor bases (25) which are symmetrically installed on both sides of the support assembly. The concentric vibration machine roller (13) includes 3 vibration machine rollers. The two ends of the 3 vibration machine rollers are respectively installed on a longitudinal vibration motor base. The longitudinal vibration motor (11) is installed on a longitudinal vibration motor base and is connected to the 3 vibration machine rollers to provide longitudinal vibration for the 3 vibration machine rollers. The cross-sections of the 3 vibration machine rollers are such that the center connection lines form an equilateral triangle.

6. The ultra-thin carbon fiber bundle unwinding device combining vibration and air blowing according to claim 1, characterized in that: The transverse vibration wire spreading assembly includes a crank-slider mechanism (34), a spacer block (29), a guide sleeve device (40), a Mayer rod driving roller (26), a Mayer rod driven roller (28), and a Mayer rod base (27); the crank-slider mechanism (34) is fixed to one side of the support assembly through the spacer block (29). The crank-slider mechanism includes a rotating pair, a connecting rod connecting the rotating pairs, a limiting device, and a linear reciprocating guide rod. There are limiting holes on the limiting device. The guide sleeve device (40) includes a guide sleeve support plate and guide sleeve holes on the guide sleeve support plate. The two ends of the linear reciprocating guide rod are respectively located in the limiting holes and the guide sleeve holes. The connecting rod connected to the linear reciprocating guide rod drives the linear reciprocating guide rod to perform linear reciprocating motion under the drive of the rotating pair. The linear reciprocating guide rod is perpendicular to the moving direction of the fiber bundle. There are two Mayer rod bases (27) which are symmetrically installed on both sides of the support assembly. The two ends of the Mayer rod driving roller (26) and the Mayer rod driven roller (28) are respectively fixed on a Mayer rod base. The Mayer rod driving roller (26) and the Mayer rod driven roller (28) are arranged in an up-and-down structure, and during the working process, the Mayer rod driving roller (26) rotates clockwise and the Mayer rod driven roller (28) rotates counterclockwise.

7. The ultra-thin carbon fiber bundle unwinding device combining vibration and air blowing according to claim 1, characterized in that: The sponge machine roller assembly includes a sponge roller (36) and a sponge roller base (37). There are two sponge roller bases (37) which are symmetrically and fixedly installed on both sides of the support assembly. The sponge roller (36) is composed of two parallel rollers arranged symmetrically up and down. The two ends of each sponge roller are fixedly connected to a sponge roller base. During the working process, the upper sponge roller rotates counterclockwise and the lower sponge roller rotates clockwise.

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