Aramid zero-degree belted layer production device and use method thereof

Abstract

The invention relates to the technical field of tire production, in particular to an aramid zero-degree belted layer production device and a using method thereof. The aramid zero-degree belted layer production device comprises a gum dipping tank, a gum dipping mechanism is arranged at the bottom of the gum dipping tank and comprises a front end cover, a rear end cover, an inner cylinder and an outer cylinder, the inner cylinder and the outer cylinder are coaxially and horizontally installed between the front end cover and the rear end cover, and a piston connected with a displacement driving mechanism divides the interior of the inner cylinder into a front cavity and a rear cavity. The outer cylinder is provided with a plurality of first radial through holes, the front end cover, the rear end cover, the inner cylinder and the outer cylinder jointly define an annular flow channel, the front cavity is communicated with the annular flow channel, and the rear cavity is communicated with the gum dipping groove. The rubber dipping effect on the aramid cord thread is good, the bonding effect of the zero-degree belted layer and the tire tread can be improved, crown falling is prevented, and the overall performance of the tire is enhanced.

Description

Technical Field

[0001] The present invention relates to the technical field of tire production, and particularly to an aramid zero-degree belt layer production device and a method for using the same. Background Art

[0002] The zero-degree belt layer refers to a structure in which the belt direction forms a zero-degree angle with the tire tangential direction. This structure can form a continuous tensile state, thereby making the overall performance of the tire more stable.

[0003] Currently, the zero-degree belt layer is generally prepared with steel cord as the main body. For example, the patent with the application number 201911250297.6 discloses a winding production process for an impregnated zero-degree belt. First, the steel cord is unwound, the steel is coated with rubber, then the excess rubber slurry is brushed off, the rubber slurry is dried and the wire is stored. During the process of supplying the cord, the coated steel cord is wound online to form a zero-degree belt layer. In this patent, the zero-degree belt layer is formed by winding a single rubber-coated steel cord tightly against the carcass without joints, which improves the anti-deformation ability of the belt layer. However, the strength of the steel is limited. In order to further improve the anti-deformation ability and strength of the zero-degree belt layer, para-aramid fibers can be used to prepare the zero-degree belt layer. Para-aramid fibers, namely aramid 1414, have a strength 6 times that of steel, a modulus 2-3 times that of steel, a density only 1 / 5 that of steel, strong thermal stability and good adhesion to rubber. Twisting multiple aramid fibers can form aramid cord.

[0004] Replacing the steel cord with aramid cord and following the existing production process can prepare high-performance tires. However, during the impregnation process, since the aramid cord is formed by twisting multiple aramid fibers, the rubber solution is not easily penetrated into the interior of the aramid cord, which will greatly affect the impregnation effect. The patent with the application number 202210576370.4 discloses an aramid tire cord manufacturing device, including an impregnation tank. An impregnation roller for pressing the cord into the rubber solution is rotatably connected in the impregnation tank. A threading hole for the cord to pass through is opened on the side wall of the impregnation tank. The height of the threading hole is lower than the axis height of the impregnation roller, and the diameter of the threading hole is larger than the diameter of the cord. When the cord moves in the impregnation tank, it will drive the nearby rubber solution to move in the same direction. When the cord passes through the threading hole, the aperture of the threading hole is small, and the rubber solution will be under a certain pressure when passing through the threading hole, so as to press towards the interior of the cord, enabling the interior of the cord to be impregnated as well. The above technical solution has the following problems: First, the length of the threading hole is limited, the residence time of the aramid cord in the threading hole is short, and the effect of the rubber solution in the threading hole penetrating into the interior of the aramid cord is not obvious; Second, the rubber solution in the impregnation tank continuously flows out of the threading hole into the open recovery tank, and the rubber solution is easily contaminated, affecting the adhesion performance.

[0005] In summary, there is an urgent need to provide an aramid zero-degree belt layer production device that has a good dipping effect on aramid cord and improves the adhesion effect between the zero-degree belt layer and the tire. Summary of the Invention

[0006] To solve at least one of the above technical problems, the present invention provides an aramid zero-degree belt layer production device, including a dipping tank. An impregnating mechanism is provided at the bottom of the dipping tank. The impregnating mechanism includes a front end cover, a rear end cover, an inner cylinder and an outer cylinder coaxially and horizontally installed between the front end cover and the rear end cover. A piston connected to a displacement driving mechanism divides the interior of the inner cylinder into a front chamber and a rear chamber. The displacement driving mechanism drives the piston to reciprocate within the inner cylinder. The outer cylinder is provided with a plurality of first radial through holes. The front end cover, the rear end cover, the inner cylinder and the outer cylinder jointly enclose an annular flow channel. The front chamber communicates with the annular flow channel, and the rear chamber communicates with the dipping tank.

[0007] Preferably, the dipping tank includes a rectangular tank body and an upper cover. A glue inlet is provided at the top of the dipping tank, and a wire inlet and a wire outlet are provided above the side wall. A guiding roller is provided at the wire inlet, and a filter rubber pair of rollers is provided at the wire outlet. The wire inlet and the wire outlet are provided on two side walls perpendicular to the conveying direction, and the guiding roller and the filter rubber pair of rollers are provided on the inner side wall of the dipping tank.

[0008] Preferably, a spiral ridge extending along its length direction is provided on the outer side wall of the outer cylinder. A plurality of winding shafts arranged equidistantly around the circumference of the outer cylinder are provided between the front end cover and the rear end cover. The winding shafts can rotatably penetrate through the spiral ridge, and one end is sealed and rotatably extends out of the dipping tank and then connected to a rotation driving mechanism.

[0009] Preferably, two spiral ridges are provided in parallel and equidistantly; the first radial through holes are located in the gaps between the spiral ridges and are spirally distributed along the length direction of the outer cylinder.

[0010] Preferably, the displacement driving mechanism includes a threaded rod rotatably installed between the front end cover and the rear end cover. The threaded rod is coaxially arranged inside the inner cylinder and is in threaded cooperation with the piston. A guiding slider is provided on the outer side wall of the piston, and a guiding chute cooperating with the guiding slider is axially provided on the inner side wall of the inner cylinder. One end of the threaded rod is sealed and rotatably passes through the dipping tank and then connected to a servo motor.

[0011] Preferably, the rotation driving mechanism includes a chassis and two internal meshing ratchet mechanisms provided on the threaded rod with opposite rotation directions. The outer peripheral wall of one internal meshing ratchet mechanism is provided with a first external tooth ring, and the outer peripheral wall of the other internal meshing ratchet mechanism is provided with a second external tooth ring. An internal and external tooth ring and a first gear are rotatably provided on the chassis. The first gear meshes with the second external tooth ring and the internal and external tooth ring respectively. A third gear meshing with the first external tooth ring and a fourth gear meshing with the internal and external tooth ring are provided on the winding shaft.

[0012] Preferably, the internal meshing ratchet mechanism includes a ratchet and a pawl. The ratchet is rotatably connected to the chassis through a turntable bearing. A fixing ring is provided on the threaded rod. A groove is provided on the outer side wall of the fixing ring. A spring and a pawl connected to the spring are provided in the groove. The first gear is installed in the chassis through a rotating shaft.

[0013] Preferably, both the front end cover and the rear end cover are disc-shaped and coaxial with the inner cylinder, and are respectively installed on two side walls of the dipping tank parallel to the conveying direction. A plurality of radial flow channels are equidistantly provided on the inner circumference of the rear end cover, and a communication groove for communicating the radial flow channels with the rear chamber is provided at the center.

[0014] Preferably, a plurality of spray pipes are equidistantly provided in the circumferential direction between the front end cover and the rear end cover. The spray pipes are hermetically communicated with the radial flow channels, and a plurality of second radial through holes are equidistantly provided along the length direction on the side facing the outer cylinder.

[0015] The present invention provides a usage method of an aramid zero-degree belt layer production device, including the following steps: Step S100: Introduce the aramid cord from the winding disc into the dipping tank, then wind the aramid cord around the outer cylinder of the dipping mechanism in a spiral shape, and finally lead the aramid cord out of the dipping tank and connect it to the traction device; Step S200: Introduce glue into the dipping tank to completely immerse the dipping mechanism in the glue. The displacement driving mechanism drives the piston to reciprocate in the inner cylinder, so that the volumes of the front chamber and the rear chamber change alternately. When the volume of the front chamber changes from small to large, a suction force is generated, and the glue in the dipping tank impacts the aramid cord wound around the outer cylinder radially inward, pressing the glue into the interior of the aramid cord. When the volume of the front chamber changes from large to small, a jet impact force is generated, and the glue impacts the aramid cord wound around the outer cylinder radially outward, pressing the glue into the interior of the aramid cord. Through the alternating cycle of suction and jet impact, the aramid cord can be fully dipped; Step S300: Introduce the dipped aramid cord into the drying device through the traction device for drying and storage.

[0016] Compared with the prior art, the present invention has the following beneficial technical effects: 1. The aramid cord is wound around the outer cylinder of the dipping mechanism in a spiral shape, increasing the travel of the aramid cord in the dipping tank and improving the dipping effect; 2. The displacement driving mechanism of the dipping mechanism drives the piston to reciprocate in the inner cylinder, so that the volumes of the front chamber and the rear chamber change alternately, sucking and jetting the glue in the dipping tank radially. The forces generated by the radial suction and jet impact the aramid cord wound around the outer cylinder alternately from the inside and outside in the radial direction, enabling the glue to fully penetrate into the interior of the aramid cord and improving the dipping effect of the aramid cord; 3. The dipping tank is enclosed, which can prevent dust and impurities from falling into the tank and improve the cleanliness of the glue solution; the filter rubber counter-roll is arranged on the inner side wall of the dipping tank, which can make the scraped glue solution drip into the dipping tank and improve the environmental cleanliness; 4. The outer side wall of the outer cylinder is provided with spiral ridges extending along its length direction. The spiral ridges can restrain the aramid cord, enabling the aramid cord to travel in the gaps between the spiral ridges and improving the winding regularity of the aramid cord; the winding shafts arranged equidistantly around the circumference of the outer cylinder are used for winding the aramid cord, so that there is a certain gap between the aramid cord and the outer side wall of the outer cylinder. The aramid cord will not block the first radial through holes on the outer cylinder, which can reduce the resistance during suction and jet impingement of the first radial through holes and improve the suction and jet impingement effect. The rotary drive mechanism drives the winding shaft to rotate, which can reduce the traveling resistance of the aramid cord; 5. The displacement drive mechanism adopts a structure combining a servo motor and a threaded rod, which can reduce the overall volume of the equipment; 6. The rotary drive mechanism can drive the winding shaft to rotate in the advancing direction of the aramid cord by the servo motor of the displacement drive mechanism through two internal meshing ratchet mechanisms with opposite steering directions arranged on the threaded rod and cooperating with the meshing transmission structure; 7. A number of jet pipes are arranged equidistantly in the circumferential direction between the front end cover and the rear end cover. The jet pipes can cooperate with the outer cylinder to enhance the suction and jet impingement intensity and improve the dipping efficiency; In summary, the present invention has a good dipping effect on the aramid cord, can improve the bonding effect between the zero-degree belt layer and the tire tread, prevent crown detachment, and enhance the overall performance of the tire. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is the front view of the present invention; Figure 2 is Figure 1 the A-A sectional view of Figure 3 is Figure 1 the B-B sectional view of Figure 4 is the exploded view of the dipping tank; Figure 5 is the structural schematic diagram of the dipping structure; Figure 6 is the structural schematic diagram of the front end cover and the rear end cover; Figure 7 is the structural schematic diagram of the outer cylinder; Figure 8 is the structural schematic diagram of the inner cylinder and the piston; Figure 9 is the structural schematic diagram of the displacement drive mechanism; Figure 10 is the exploded view of the rotary drive mechanism; Figure 11 is a three-dimensional sectional view of two internal meshing ratchet mechanisms; Figure 12 is a schematic diagram of the rotation state of the rotation drive mechanism when the threaded rod rotates clockwise; Figure 13 is a schematic diagram of the rotation state of the rotation drive mechanism when the threaded rod rotates counterclockwise; Figure 14 is a schematic diagram of the structure of the injection pipe; Description of the reference numerals in the drawings

[0018] 1. Impregnation tank, 11. Tank body, 12. Upper cover, 13. Glue inlet, 14. Wire inlet, 15. Wire outlet, 16. Guide roller, 17. Filter rubber pair roller, 2. Impregnation mechanism, 21. Front end cover, 22. Rear end cover, 221. Radial flow channel, 222. Communication groove, 23. Inner cylinder, 231. Communication hole, 232. Guide chute, 24. Outer cylinder, 241. First radial through hole, 242. Spiral rib, 25. Piston, 26. Displacement drive mechanism, 261. Threaded rod, 262. Servo motor, 27. Winding shaft, 28. Rotation drive mechanism, 281. Chassis, 282. Internal meshing ratchet mechanism, 2821. Ratchet, 2822. Pawl, 2823. Turntable bearing, 2824. Fixed ring, 2825. Groove, 2826. Spring, 283. First external tooth ring, 284. Second external tooth ring, 285. Internal and external tooth ring, 286. First gear, 287. Third gear, 288. Fourth gear, 29. Injection pipe, 291. Second radial through hole, 10. Front chamber, 20. Rear chamber, 30. Annular flow channel. Specific embodiments

[0019] The following describes the specific embodiments of the present invention in conjunction with the drawings and embodiments: It should be noted that the structures, ratios, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those skilled in this technology to understand and read, and are not used to limit the implementation conditions of the present invention. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should fall within the scope covered by the technical content disclosed in the present invention.

[0020] At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" cited in this specification are only for the convenience of narration and are not used to limit the scope of implementation of the present invention. The change or adjustment of their relative relationship, without substantial change of the technical content, should also be regarded as the scope within which the present invention can be implemented. Embodiment 1

[0021] Combined with the appendixFigure 1-14 , this embodiment provides an aramid zero-degree belt layer production device, including an impregnating tank 1. An impregnating mechanism 2 is provided at the bottom of the impregnating tank 1. The impregnating mechanism 2 includes a front end cover 21, a rear end cover 22, and an inner cylinder 23 and an outer cylinder 24 coaxially and horizontally installed between the front end cover 21 and the rear end cover 22. A piston 25 connected to a displacement driving mechanism 26 divides the interior of the inner cylinder 23 into a front chamber 10 and a rear chamber 20. The displacement driving mechanism 26 drives the piston 25 to reciprocate within the inner cylinder 23. The outer cylinder 24 is provided with a plurality of first radial through holes 241. The front end cover 21, the rear end cover 22, the inner cylinder 23, and the outer cylinder 24 together enclose an annular flow channel 30. The front chamber 10 communicates with the annular flow channel 30, and the rear chamber 20 communicates with the impregnating tank 1.

[0022] In the above technical solution, the impregnating tank 1 is used to hold the sizing solution. The impregnating mechanism 2 is used to wind and convey the aramid cord, and at the same time, spray and suck the sizing solution in the impregnating tank 1 towards the direction of the aramid cord, so that the sizing solution fully penetrates into the interior of the aramid cord. The form of communication between the front chamber 10 and the annular flow channel 30 is not limited. Slots or holes communicating with the front chamber 10 and the annular flow channel 30 can be opened on the front end cover 21, or slots or holes communicating with the front chamber 10 and the annular flow channel 30 can be opened on the inner cylinder 23. In this embodiment, a plurality of communication holes 231 are circumferentially and equidistantly arranged on the side wall of the inner cylinder 23 close to the front end cover 21; the structure of the displacement driving mechanism 26 is not limited. Conventional displacement driving components such as air cylinders or hydraulic cylinders can be directly used. It should be noted that ① during the production process of the zero-degree belt layer, it includes multiple process units, such as impregnating, drying, wire storage, and winding and forming with the tire, etc. Each process unit needs to be equipped with a corresponding device. This invention belongs to the impregnating process unit during the production process of the zero-degree belt layer. The devices of the remaining process units can refer to the prior art and are not within the protection scope of this invention; ② the aramid cord in this invention is formed by twisting a plurality of para-aramid fibers and is stored on a winding disk.

[0023] In use, a sizing solution is introduced into the sizing tank 1, causing the sizing mechanism 2 to be completely immersed in the sizing solution. The aramid cord is introduced into the sizing tank 1 from the winding disc, then wound around the outer cylinder 24 in a spiral shape, and finally led out of the sizing tank 1 and introduced into a drying device through a traction device for drying and storage. The aramid cord is sized in the sizing tank 1. Since the aramid cord is wound around the outer cylinder 24, the travel of the aramid cord in the sizing tank 1 is increased, which can improve the sizing effect. During sizing, the displacement drive mechanism 26 drives the piston 25 to reciprocate in the inner cylinder 23, causing the volumes of the front chamber 10 and the rear chamber 20 to alternately change. When the volume of the front chamber 10 changes from small to large, a suction force is generated, and the sizing solution in the sizing tank 1 is sucked from the first radial through-hole 241 of the outer cylinder 24 into the annular flow channel 30, and then enters the front chamber 10 communicating with it from the annular flow channel 30. During the suction process, the sizing solution in the sizing tank 1 impacts the aramid cord wound around the outer cylinder 24 radially inward, pressing the sizing solution into the interior of the aramid cord. When the volume of the front chamber 10 changes from large to small, a jetting force is generated, and the sizing solution in the front chamber 10 enters the annular flow channel 30, and then jets from the first radial through-hole 241 of the outer cylinder 24 into the sizing tank 1 to form a jet. During the jetting process, the sizing solution impacts the aramid cord wound around the outer cylinder 24 radially outward, pressing the sizing solution into the interior of the aramid cord. Through the alternating cycle of suction and jetting, the aramid cord can be fully sized.

[0024] In a specific technical solution, the sizing tank 1 includes a rectangular tank body 11 and an upper cover 12. The sizing tank 1 is provided with a sizing solution inlet 13 at the top, a wire inlet 14 and a wire outlet 15 above the side wall. A guiding roller 16 is provided at the wire inlet 14, and a sizing solution filtering pair of rollers 17 is provided at the wire outlet 15. The wire inlet 14 and the wire outlet 15 are provided on two side walls perpendicular to the conveying direction, and the guiding roller 16 and the sizing solution filtering pair of rollers 17 are provided on the inner side wall of the sizing tank 1.

[0025] In the above technical solution, the sizing tank 1 is closed. Compared with the traditional tank that only includes the tank body 11, the closed sizing tank 1 can prevent dust and impurities from falling into the tank, improving the cleanliness of the sizing solution. For the convenience of subsequent winding of the aramid cord, the wire inlet 14 is preferably arranged near the winding starting end of the outer cylinder 24, and the wire outlet 15 is preferably arranged near the winding ending end of the outer cylinder 24. The guiding roller 16 at the wire inlet 14 guides the aramid cord to the winding starting end of the outer cylinder 24, and the sizing solution filtering pair of rollers 17 at the wire outlet 15 is used to scrape off the excess sizing solution on the aramid cord. The sizing solution filtering pair of rollers 17 refers to two rotatable rollers arranged oppositely. When the aramid cord passes between the two rollers, the excess sizing solution can be scraped off. The rollers are preferably sponge rollers. The sizing solution filtering pair of rollers 17 is provided on the inner side wall of the sizing tank 1, which can make the scraped sizing solution drip into the interior of the sizing tank 1, improving the environmental cleanliness.

[0026] In a specific technical solution, a spiral ridge 242 extending along the length direction is provided on the outer side wall of the outer cylinder 24. A plurality of winding shafts 27 arranged at equal circumferential intervals around the outer cylinder 24 are provided between the front end cover 21 and the rear end cover 22. The winding shafts 27 can rotatably penetrate through the spiral ridge 242, and one end is hermetically and rotatably extended out of the dipping tank 1 and then connected to a rotary drive mechanism 28.

[0027] In the above technical solution, the spiral ridge 242 can restrain the aramid cord, enabling the aramid cord to travel within the gap of the spiral ridge 242, and improving the winding regularity of the aramid cord; the winding shafts 27 arranged at equal circumferential intervals around the outer cylinder 24 are used for winding the aramid cord, so that there is a certain gap between the aramid cord and the outer side wall of the outer cylinder 24, and the aramid cord will not block the first radial through hole 241 on the outer cylinder 24, which can reduce the resistance during suction and spray jet, improve the suction and spray effect. The rotary drive mechanism 28 drives the winding shaft 27 to rotate, which can reduce the traveling resistance of the aramid cord. The structure of the rotary drive mechanism 28 is not limited, and conventional rotary drive devices such as motors can be directly adopted.

[0028] In a specific technical solution, two spiral ridges 242 are provided in parallel and at equal intervals; the first radial through hole 241 is located within the gap of the spiral ridge 242 and is spirally distributed along the length direction of the outer cylinder 24.

[0029] In the above technical solution, by providing two parallel spiral ridges 242, two aramid cords can be dipped simultaneously. In the prior art, the zero-degree belt layer is usually provided with two, respectively located at the shoulder positions near both sides of the tire. During tire production, the zero-degree belt layer can be wound at the shoulder on one side first, and then at the shoulder on the other side after completion, or two zero-degree belt layers can be wound simultaneously at the shoulders on both sides. Providing two parallel spiral ridges 242 can meet the latter production requirement; the first radial through hole 241 is arranged within the gap of the spiral ridge 242, which can improve the suction and spray effect on the aramid cord.

[0030] In a specific technical solution, the displacement drive mechanism 26 includes a threaded rod 261 rotatably installed between the front end cover 21 and the rear end cover 22. The threaded rod 261 is coaxially arranged inside the inner cylinder 23 and is in threaded cooperation with the piston 25. A guiding slider 251 is provided on the outer side wall of the piston 25, and an axially arranged guiding chute 232 for cooperating with the guiding slider 251 is provided on the inner side wall of the inner cylinder 23. One end of the threaded rod 261 is hermetically and rotatably passed through the dipping tank 1 and then connected to a servo motor 262.

[0031] In the above technical solution, the displacement driving mechanism 26 adopts a structure in which a servo motor 262 and a threaded rod 261 are matched, which can reduce the overall volume of the device. If a traditional cylinder or hydraulic cylinder is used for driving, the length of the piston rod needs to be adapted to the stroke of the piston 25, resulting in a very long overall length of the cylinder or hydraulic cylinder, increasing the overall volume and space occupancy of the device. When in use, the servo motor 262 drives the threaded rod 261 to rotate, and the piston 25 that is threadedly engaged with the threaded rod 261 can move towards one axial end of the inner cylinder 23 as the threaded rod 261 rotates. After moving to the limit position, the servo motor 262 drives the threaded rod 261 to rotate in the reverse direction, and the piston 25 then moves towards the other axial end of the inner cylinder 23. The guiding slider 251 of the piston 25 cooperates with the guiding slider 251 of the inner cylinder 23, which can circumferentially lock the piston 25 to prevent the piston 25 from rotating together with the threaded rod 261.

[0032] In a specific technical solution, the rotary driving mechanism 28 includes a chassis 281 and two internal meshing ratchet mechanisms 282 provided on the threaded rod 261 and having opposite rotation directions. The outer peripheral wall of one internal meshing ratchet mechanism 282 is provided with a first external tooth ring 283, and the outer peripheral wall of the other internal meshing ratchet mechanism 282 is provided with a second external tooth ring 284. An internal and external tooth ring 285 and a first gear 286 are rotatably provided on the chassis 281. The first gear 286 meshes with the second external tooth ring 284 and the internal and external tooth ring 285 respectively. A third gear 287 that meshes with the first external tooth ring 283 and a fourth gear 288 that meshes with the internal and external tooth ring 285 are provided on the winding shaft 27.

[0033] In the above technical solution, the internal meshing ratchet mechanism 282 means that the ratchet pawl 2822 is arranged inside the ratchet wheel 2821. The ratchet wheel 2821 is in a circular ring shape, and the inner ring wall is provided with ratchet teeth that cooperate with the ratchet pawl 2822 located at the center for internal meshing transmission. This is common knowledge and will not be elaborated here. The chassis 281 is used to protect each meshing transmission unit of the rotary driving mechanism 28. The threaded rod 261 and the winding shaft 27 both rotate and extend into the chassis 281. The two internal meshing ratchet mechanisms 282 provided on the threaded rod 261 have opposite rotation directions. When the threaded rod 261 rotates in one direction, only one ratchet wheel 2821 rotates in the same direction as the threaded rod 261. In this embodiment, the ratchet wheel 2821 connected to the first external tooth ring 283 is selected to rotate clockwise with the threaded rod 261 (the rotation direction is only an example and is not limited). When in use, such as Figure 12As shown in the figure, when the servo motor 262 drives the threaded rod 261 to rotate clockwise, the ratchet 2821 connected to the first external tooth ring 283 drives the first external tooth ring 283 to rotate clockwise along with the threaded rod 261. The third gear 287 meshing with the first external tooth ring 283 drives the winding shaft 27 to rotate counterclockwise. The winding shaft 27 drives the fourth gear 288 to rotate counterclockwise. The fourth gear 288 drives the internal and external tooth ring 285 meshing with it to rotate clockwise. The internal and external tooth ring 285 drives the first gear 286 meshing with it to rotate clockwise. The first gear 286 drives the second external tooth ring 284 meshing with it and the ratchet 2821 connected to the second external tooth ring 284 to rotate counterclockwise; As Figure 13 shown in the figure, when the servo motor 262 rotates counterclockwise, the ratchet 2821 connected to the second external tooth ring 284 drives the second external tooth ring 284 to rotate counterclockwise along with the threaded rod 261. The second external tooth ring 284 drives the first gear 286 meshing with it to rotate clockwise. The first gear 286 drives the internal and external tooth ring 285 meshing with it to rotate clockwise. The fourth gear 288 meshing with the internal and external tooth ring 285 drives the winding shaft 27 to rotate counterclockwise. The winding shaft 27 drives the third gear 287 to rotate counterclockwise. The first external tooth ring 283 meshing with the third gear 287 drives the ratchet 2821 connected to it to rotate clockwise. In summary, by arranging two internal meshing ratchet mechanisms 282 with opposite rotation directions on the threaded rod 261 and cooperating with the meshing transmission structure, the winding shaft 27 can be driven to rotate in the advancing direction of the aramid cord (counterclockwise direction in this embodiment) by the servo motor 262. The forward and reverse rotations of the servo motor 262 do not affect the rotation direction of the winding shaft 27.

[0034] In a specific technical solution, the internal meshing ratchet mechanism 282 includes a ratchet 2821 and a pawl 2822. The ratchet 2821 is rotatably connected to the chassis 281 through a turntable bearing 2823. A fixing ring 2824 is provided on the threaded rod 261. A groove 2825 is provided on the outer side wall of the fixing ring 2824. A spring 2826 and a pawl 2822 connected to the spring 2826 are provided in the groove 2825. The first gear 286 is installed in the chassis 281 through a rotating shaft. In a specific technical solution, both the front end cover 21 and the rear end cover 22 are disc-shaped coaxial with the inner cylinder 23, and are respectively installed on two side walls of the dipping tank 1 parallel to the conveying direction. A plurality of radial flow channels 221 are equidistantly provided on the inner circumference of the rear end cover 22, and a communication groove 222 connecting the radial flow channels 221 and the rear chamber 20 is provided at the center.

[0035] In the above technical solution, the rear chamber 20 sucks or sprays the glue liquid in the dipping tank 1 through the radial flow channels 221 provided on the rear end cover 22. In this embodiment, the communication groove 222 is an annular groove, and a threaded rod 261 is provided at its center.

[0036] In a specific technical solution, a plurality of injection tubes 29 are equidistantly arranged in the circumferential direction between the front end cover 21 and the rear end cover 22. The injection tubes 29 are hermetically communicated with the radial flow channels 221, and a plurality of second radial through holes 291 are equidistantly arranged along the length direction on the side facing the outer cylinder 24.

[0037] In the above technical solution, the injection tubes 29 can cooperate with the outer cylinder 24 to enhance the suction and jetting intensity and improve the dipping efficiency. When the volume of the front chamber 10 changes from large to small, the first radial through holes 241 of the outer cylinder 24 jet the glue liquid radially. At this time, the volume of the rear chamber 20 changes from small to large, and the second radial through holes 291 of the injection tubes 29 suck the glue liquid radially, and the jetting intensity of the glue liquid from the outer cylinder 24 to the injection tubes 29 increases. When the volume of the front chamber 10 changes from small to large, the first radial through holes 241 of the outer cylinder 24 suck the glue liquid radially. At this time, the volume of the rear chamber 20 changes from large to small, and the second radial through holes 291 of the injection tubes 29 jet the glue liquid radially, and the jetting intensity of the glue liquid from the injection tubes 29 to the outer cylinder 24 increases. Under the condition of reciprocating high-intensity jetting, the glue liquid can fully enter the inside of the aramid cord, greatly improving the dipping effect.

[0038] In the present invention, the injection tubes 29 and the outer cylinder 24 can be further optimized. Sector nozzles (not shown in the figure) are provided on the first radial through holes 241 and the second radial through holes 291 to increase the jetting coverage area. The diameters of the plurality of first radial through holes 241 on the outer cylinder 24 increase along the direction close to the rear end cover 22, and the diameters of the plurality of second radial through holes 291 on the injection tubes 29 increase along the direction close to the front end cover 21. By changing the diameters, the jetting intensities of the outer cylinder 24 and the injection tubes 29 can be balanced.

[0039] The working principle and working process of this embodiment are as follows: ① The aramid cord is led out from the winding drum, introduced into the dipping tank 1 from the wire inlet 14 of the dipping tank 1, and the aramid cord is spirally wound around the outer cylinder 24 on the winding shaft 27 arranged equidistantly along the circumference of the outer cylinder 24 through the guide roller 16. The aramid cord travels in the gap between the spiral convex ridges 242 on the outer cylinder 24, and the aramid cord is successively led out of the dipping tank 1 through the rubber filter roller 17 and the wire outlet 15 and connected to the traction device; ② The glue liquid is introduced into the dipping tank 1, so that the dipping mechanism 2 is completely immersed in the glue liquid, and the displacement drive mechanism 26 drives the piston 25 to reciprocate in the inner cylinder 23, so that the volume of the front chamber 10 and the rear chamber 20 changes alternately. When the volume of the front chamber 10 changes from large to small, the first radial through hole 241 of the outer cylinder 24 radially sprays the glue liquid, and at this time the volume of the rear chamber 20 changes from small to large, and the spraying The second radial through hole 291 of the tube 29 radially sucks the glue, and the jet intensity of the glue from the outer cylinder 24 to the injection tube 29 is increased. When the volume of the front chamber 10 changes from small to large, the first radial through hole 241 of the outer cylinder 24 radially sucks the glue. At this time, the volume of the rear chamber 20 changes from large to small, and the second radial through hole 291 of the injection tube 29 radially sprays the glue, and the jet intensity of the glue from the injection tube 29 to the outer cylinder 24 is increased. Under the condition of reciprocating high-intensity jet, the glue can fully enter the interior of the aramid cord, greatly improving the dipping effect; the servo motor 262 of the displacement drive mechanism 26 is connected to the winding shaft 27 through the rotation drive mechanism 28. When the servo motor 262 rotates forward and reversely, the winding shaft 27 is driven to rotate along the traveling direction of the aramid cord; ③ The aramid cord that has been dipped in glue is introduced into the drying device through the traction device for drying and storage. Example 2

[0040] Combined with Figure 1-14 This embodiment provides a method for using an aramid zero-degree belt production device, comprising the following steps: Step S100, introducing the aramid cord from the winding drum into the dipping tank 1, then spirally winding the aramid cord around the outer cylinder 24 of the dipping mechanism 2, and finally leading the aramid cord out of the dipping tank 1 and connecting it to the traction device; Step S200, glue liquid is introduced into the glue dipping tank 1, so that the glue dipping mechanism 2 is completely immersed in the glue liquid, and the displacement driving mechanism 26 drives the piston 25 to reciprocate in the inner cylinder 23, so that the volumes of the front chamber 10 and the rear chamber 20 are alternately changed. When the volume of the front chamber 10 changes from small to large, a suction force is generated, and the glue liquid in the glue dipping tank 1 impacts the aramid cord wound around the outer cylinder 24 inwardly along the radial direction of the outer cylinder 24, and the glue is pressed into the inside of the aramid cord. When the volume of the front chamber 10 changes from large to small, a spraying force is generated, and the glue liquid impacts the aramid cord wound around the outer cylinder 24 outwardly along the radial direction of the outer cylinder 24, and the glue is pressed into the inside of the aramid cord. Through the alternating cycle of suction and spraying, the aramid cord can be fully dipped in glue; Step S300: Introduce the aramid cord that has been impregnated with glue into the drying device through a traction device for drying and storage.

[0041] The above embodiments are preferred embodiments of the present invention. However, the embodiments of the present invention are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the present invention shall be equivalent replacement methods and are all included in the protection scope of the present invention.

Claims

1. An aramid zero-degree belt production device, including an impregnating bath (1), characterized in that, The bottom of the dipping tank (1) is provided with a dipping mechanism (2). The dipping mechanism (2) includes a front end cover (21), a rear end cover (22), an inner cylinder (23) and an outer cylinder (24) which are horizontally installed coaxially between the front end cover (21) and the rear end cover (22). A piston (25) connected to a displacement driving mechanism (26) divides the interior of the inner cylinder (23) into a front chamber (10) and a rear chamber (20). The displacement driving mechanism (26) drives the piston (25) to reciprocate inside the inner cylinder (23). The outer cylinder (24) is provided with a number of first radial through holes (241). The front end cover (21), the rear end cover (22), the inner cylinder (23) and the outer cylinder (24) jointly enclose an annular flow channel (30). The front chamber (10) communicates with the annular flow channel (30), and the rear chamber (20) communicates with the dipping tank (1).

2. The production device of an aramid zero-degree belt layer according to claim 1, wherein, The dipping tank (1) includes a rectangular tank body (11) and an upper cover (12). The top of the dipping tank (1) is provided with a glue inlet (13). The side wall is provided with a wire inlet (14) and a wire outlet (15) above. A guiding roller (16) is provided at the wire inlet (14), and a filter glue pair roller (17) is provided at the wire outlet (15). The wire inlet (14) and the wire outlet (15) are arranged on two side walls perpendicular to the conveying direction. The guiding roller (16) and the filter glue pair roller (17) are arranged on the inner side wall of the dipping tank (1).

3. The production device of an aramid zero-degree belt layer according to claim 1, characterized in that, The outer side wall of the outer cylinder (24) is provided with spiral ridges (242) extending along its length direction. A number of winding shafts (27) are arranged equidistantly around the circumference of the outer cylinder (24) between the front end cover (21) and the rear end cover (22). The winding shafts (27) can rotatably penetrate through the spiral ridges (242), and one end is sealed and rotatably extends out of the dipping tank (1) and then connected to a rotation driving mechanism (28).

4. The production device of an aramid zero-degree belt layer according to claim 3, wherein, There are two spiral ridges (242) that are parallel and equidistant; the first radial through holes (241) are located in the gaps between the spiral ridges (242) and are spirally distributed along the length direction of the outer cylinder (24).

5. The production device of an aramid zero-degree belt layer according to claim 4, characterized in that, The displacement driving mechanism (26) includes a threaded rod (261) rotatably installed between the front end cover (21) and the rear end cover (22). The threaded rod (261) is coaxially arranged inside the inner cylinder (23) and is in threaded cooperation with the piston (25). The outer side wall of the piston (25) is provided with a guiding slider (251). The inner side wall of the inner cylinder (23) is axially provided with a guiding chute (232) that cooperates with the guiding slider (251). One end of the threaded rod (261) is sealed and rotatably passes through the dipping tank (1) and then connected to a servo motor (262).

6. The production device of an aramid zero-degree belt layer according to claim 5, characterized in that, The rotation drive mechanism (28) includes a chassis (281) and two internal meshing ratchet mechanisms (282) provided on the threaded rod (261) and having opposite steering directions. The outer peripheral wall of one internal meshing ratchet mechanism (282) is provided with a first external tooth ring (283), and the outer peripheral wall of the other internal meshing ratchet mechanism (282) is provided with a second external tooth ring (284). An internal and external tooth ring (285) and a first gear (286) are rotatably provided on the chassis (281). The first gear (286) meshes with the second external tooth ring (284) and the internal and external tooth ring (285) respectively. A third gear (287) meshing with the first external tooth ring (283) and a fourth gear (288) meshing with the internal and external tooth ring (285) are provided on the winding shaft (27).

7. The production device of an aramid zero-degree belt layer according to claim 6, characterized in that, The internal meshing ratchet mechanism (282) includes a ratchet (2821) and a pawl (2822). The ratchet (2821) is rotatably connected to the chassis (281) through a turntable bearing (2823). A fixing ring (2824) is provided on the threaded rod (261). A groove (2825) is provided on the outer side wall of the fixing ring (2824). A spring (2826) and a pawl (2822) connected to the spring (2826) are provided in the groove (2825). The first gear (286) is installed in the chassis (281) through a rotating shaft.

8. The production device of an aramid zero-degree belt layer according to claim 1, characterized in that, The front end cover (21) and the rear end cover (22) are both disc-shaped and coaxial with the inner cylinder (23), and are respectively installed on two side walls of the dipping tank (1) parallel to the conveying direction. A plurality of radial flow channels (221) are equidistantly provided on the inner circumference of the rear end cover (22), and a communication groove (222) connecting the radial flow channels (221) and the rear chamber (20) is provided at the center.

9. The production device of an aramid zero-degree belt layer according to claim 7, characterized in that, A plurality of injection pipes (29) are equidistantly provided in the circumferential direction between the front end cover (21) and the rear end cover (22). The injection pipes (29) are hermetically communicated with the radial flow channels (221), and a plurality of second radial through holes (291) are equidistantly provided along the length direction on the side facing the outer cylinder (24).

10. The usage method of an aramid zero-degree belt layer production device according to any one of claims 1-9, characterized in that, It includes the following steps: Step S100: Introduce the aramid cord from the winding disc into the dipping tank (1), then wind the aramid cord spirally around the outer cylinder (24) of the dipping mechanism (2), and finally lead the aramid cord out of the dipping tank (1) and connect it to the traction device. Step S200: Inject glue into the dipping tank (1) to completely immerse the dipping mechanism (2) in the glue. The displacement drive mechanism (26) drives the piston (25) to reciprocate within the inner cylinder (23), causing the volumes of the front chamber (10) and the rear chamber (20) to change alternately. When the volume of the front chamber (10) increases from small to large, a suction force is generated, and the glue in the dipping tank (1) impacts the aramid cord wound around the outer cylinder (24) radially inward, pressing the glue into the interior of the aramid cord. When the volume of the front chamber (10) decreases from large to small, a jetting force is generated, and the glue impacts the aramid cord wound around the outer cylinder (24) radially outward, pressing the glue into the interior of the aramid cord. Through the alternating cycle of suction and jetting, the aramid cord can be fully impregnated with glue; Step S300: Introduce the aramid cord that has been impregnated with glue into the drying device through the traction device for drying and storage.

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