Intelligent polyamide yarn elasticizing device and elasticizing method thereof

Abstract

The invention discloses an intelligent polyamide yarn elasticizing device and an elasticizing method thereof, and belongs to the technical field of polyamide yarn elasticizing, the device comprises a rack, and a pay-off mechanism, a drafting mechanism, an elasticizing mechanism, a shaping mechanism and a take-up mechanism which are sequentially arranged in the polyamide yarn conveying direction, and further comprises a tension detection assembly and a controller; the tension detection assembly detects the current tension value of the nylon yarn in real time and transmits the current tension value to the controller; the drafting mechanism accurately controls the clamping pressure and the tightening degree of the polyamide yarns by adjusting the distance between a driving drafting roller and a driven drafting roller, and is suitable for raw materials of different specifications; the elasticizing mechanism is provided with a false twisting assembly and an elasticizing pressure adjusting assembly, initial clamping pressure is provided through a belleville spring set, and linear adjustment of elasticizing pressure is achieved in cooperation with the cam transmission mechanism. The nylon yarn tensioning device solves the problems that an existing device is difficult to accurately adjust the nylon yarn tensioning degree and prone to breakage, the machining stability and the finished product consistency are improved, production loss is reduced, and the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of nylon filament texturing, in particular to an intelligent nylon filament texturing device and a texturing method thereof. BACKGROUND

[0002] Nylon filament is a kind of textile fabric, which has various types such as monofilament, strand, special yarn, etc. It is well known for its excellent wear resistance, elasticity, chemical resistance and heat resistance, and is widely used in the fields of textiles, clothing, ropes, ropes, etc. and even used in insulation and filtration in the industrial field. As for the texturing of nylon filament, it usually involves a specific process such as DTY texturing. In this process, the original filament is processed by the texturing machine to increase its elasticity and other physical properties. The textured nylon filament can better meet the different application requirements.

[0003] The existing nylon filament texturing device lacks precise cooperative design of each adjusting mechanism, and it is difficult to realize precise corresponding adjustment of tension and texturing related parameters according to different product requirements. This not only leads to large fluctuations in texturing effect and poor consistency of the elasticity of finished nylon filament, but also easily causes problems due to the imbalance between tension and texturing degree. When the tension is too large or the texturing pressure and false twist degree are set unreasonably, the nylon filament is prone to breakage during processing, which not only affects the continuity of production, but also causes waste of raw materials. At the same time, the existing device has insufficient adaptability to nylon filaments with different diameters and different elasticity requirements, and has poor adjustment flexibility, which cannot meet the dual requirements of product quality stability and multi-specification processing demand in industrial production. SUMMARY

[0004] The purpose of the present application is to provide an intelligent nylon filament texturing device and a texturing method thereof to solve the above problems.

[0005] The present application provides an intelligent nylon filament texturing device, which comprises a rack, and a pay-off mechanism, a drafting mechanism, a texturing mechanism, a setting mechanism and a take-up mechanism arranged in sequence along the nylon filament conveying direction, and a synchronous adjustment system for synchronously adjusting the tensioning degree and the texturing degree of the nylon filament; the synchronous adjustment system comprises a tension detection assembly and a controller; the connection relationship of each mechanism and component is as follows: The rack provides a mounting base for all mechanisms and the synchronous adjustment system, and the pay-off mechanism, the drafting mechanism, the texturing mechanism, the setting mechanism, the take-up mechanism and the synchronous adjustment system are all assembled on the rack; The pay-off mechanism is arranged at the input end of the rack, and its output end corresponds to the input end of the tension detection assembly, which is used to convey the nylon filament to be processed to the subsequent mechanism; The tension detection assembly is arranged between the unwinding mechanism and the drafting mechanism, the input end of which is connected with the output end of the unwinding mechanism, and the output end of which is connected with the input end of the drafting mechanism, for detecting the current tension value of the nylon yarn in real time and transmitting the detection signal to the controller. The drafting mechanism is arranged between the tension detection assembly and the elasticizing mechanism, the input end of which is connected with the output end of the tension detection assembly, and the output end of which is connected with the input end of the elasticizing mechanism, for drafting the nylon yarn, and the drafting mechanism is provided with a spacing adjusting structure for adjusting the tightness of the nylon yarn. The elasticizing mechanism is arranged between the drafting mechanism and the setting mechanism, the input end of which is connected with the output end of the drafting mechanism, and the output end of which is connected with the input end of the setting mechanism, for applying an elastic force to the nylon yarn, and the elasticizing mechanism is provided with a false twist assembly and an elastic pressure adjusting assembly. The setting mechanism is arranged between the elasticizing mechanism and the take-up mechanism, the input end of which is connected with the output end of the elasticizing mechanism, and the output end of which is connected with the input end of the take-up mechanism, for heat setting the nylon yarn after elasticizing. The take-up mechanism is arranged at the output end of the rack, the input end of which is connected with the output end of the setting mechanism, for winding the nylon yarn after setting, and the take-up mechanism is matched with the conveying speed of the unwinding mechanism. The controller is electrically connected with the tension detection assembly and the driving components of the unwinding mechanism, the drafting mechanism and the take-up mechanism, and pre-stores a target tension range and matching target false twist range and target elastic pressure range, for receiving the tension detection signal and outputting a synchronous adjusting instruction; the controller adjusts the three parameters synchronously according to the deviation between the current tension value transmitted by the tension detection assembly and the target tension range, so that the tension of the nylon yarn is maintained in the target tension range, and the false twist and the elastic pressure are matched with the corresponding target range respectively.

[0006] Preferably, the unwinding mechanism comprises an unwinding shaft, an unwinding driving motor and a bearing seat; the bearing seat is fixed on the rack, and the unwinding shaft is rotatably connected in the bearing seat through a bearing; the output shaft of the unwinding driving motor is drivingly connected with the unwinding shaft through a coupling, for driving the unwinding shaft to release the nylon yarn at a constant speed; and the unwinding driving motor is electrically connected with the controller, for controlling the start and stop state of the unwinding shaft.

[0007] Preferably, the tension detection assembly comprises an S-shaped tension sensor, a yarn guide wheel and a mounting bracket; the mounting bracket is fixed on the rack, and the S-shaped tension sensor is fixed on the mounting bracket; the yarn guide wheel is rotatably connected with the force sensitive detection end of the S-shaped tension sensor, and the nylon yarn passes through the yarn guide wheel in an S shape; and the S-shaped tension sensor converts the detected tension physical quantity into a standard electrical signal and transmits the standard electrical signal to the controller.

[0008] Preferably, the draft mechanism comprises at least two groups of draft roller groups arranged along the direction of the polyamide yarn conveying, a draft driving motor and a spacing adjustment structure; each group of draft roller groups is composed of a driving draft roller and a driven draft roller, the driving draft roller is in transmission connection with the draft driving motor through a shaft coupling; the spacing adjustment structure comprises a linear guide rail and a sliding mounting seat, and a rolling lead screw and a first servo motor, the axis of the rolling lead screw is parallel to the extension direction of the linear guide rail, the first servo motor is fixed on the rack through a motor base, and the output shaft thereof is in transmission connection with one end of the rolling lead screw through a shaft coupling; the linear guide rail is fixed on the rack and extends in a direction perpendicular to the axis of the draft roller group; the sliding mounting seat is in sliding connection with the linear guide rail, and the driven draft roller is in rotary connection with the sliding mounting seat through a bearing, and the adjustment of the spacing between the driving draft roller and the driven draft roller is realized through the translation of the sliding mounting seat.

[0009] Preferably, the false twist component of the texturing mechanism comprises a false twister and a second servo motor; the output shaft of the second servo motor is in transmission connection with the false twister through a shaft coupling, forming a false twist degree adjustment structure; the second servo motor is in electrical connection with the controller, the controller adjusts the rotating speed of the second servo motor, and then linearly changes the false twist degree of the false twister.

[0010] Preferably, the texturing pressure adjustment component of the texturing mechanism comprises a press roller, a texturing work roller, a disc spring group and a cam transmission mechanism; the texturing work roller is correspondingly arranged at the output end of the false twister, the press roller is arranged in parallel opposite to the texturing work roller, forming a texturing channel for the polyamide yarn.

[0011] Preferably, the press roller is connected with two sliding sleeve rods at positions vertically away from the axis of the press roller, the sliding sleeve rod comprises an outer sleeve rod and an inner rod, one end of the outer sleeve rod is fixedly connected with the press roller, and the other end is slidingly sleeved on the inner rod, one end of the inner rod is fixedly connected with the rack, and the other end is arranged in the outer sleeve rod, the disc spring group is arranged at the end of the inner rod abutting against the outer sleeve rod, and the cam transmission mechanism is arranged at the end of the disc spring group away from the press roller, forming a pressure adjustment structure.

[0012] Preferably, the setting mechanism comprises a setting roller, a heating component and a setting support; the setting support is fixed on the rack, and the setting roller is in rotary connection with the setting support through a bearing; the heating component is arranged around the setting roller and is in electrical connection with a temperature controller, the temperature controller is in signal connection with the controller and is used for maintaining the surface temperature of the setting roller in a preset range.

[0013] Preferably, the take-up mechanism comprises a take-up shaft, a take-up drive motor and a take-up support; the take-up support is fixed on the rack, the take-up shaft is rotatably connected to the take-up support through a bearing; the output shaft of the take-up drive motor is drivingly connected to the take-up shaft through a shaft coupling, the take-up drive motor is electrically connected to the controller, ensuring that the take-up speed is synchronized with the conveying speed of the pay-off mechanism.

[0014] A method for the elasticizing of the intelligent polyamide yarn elasticizer is provided, comprising the following steps: S1, parameter pre-setting: according to the target elastic parameters and the line diameter requirements of the polyamide yarn by the user, the corresponding target tension range, target false twist degree range and target elasticizing pressure range are determined, and the parameter range and the adjustment proportion coefficient are pre-stored in the parameter storage module of the controller; S2, yarn threading preparation: one end of the polyamide yarn to be processed is fixed on the pay-off shaft of the pay-off mechanism, and then passes through the guide wheel of the tension detection assembly, the active drafting roller and the driven drafting roller of the drafting mechanism, the pressure roller and the elasticizing work roller of the elasticizing mechanism, the setting roller of the setting mechanism, and finally is fixed on the take-up shaft of the take-up mechanism; S3, start running: the controller starts the pay-off drive motor, the drafting drive motor and the take-up drive motor, the pay-off shaft uniformly releases the polyamide yarn, the take-up shaft synchronously winds the polyamide yarn, the drafting roller group clamps the polyamide yarn for uniform conveying, and the tension detection assembly collects the current tension value of the polyamide yarn in real time and transmits it to the controller; S4, synchronous adjustment: the controller compares the current tension value with the target tension range in real time, and outputs a synchronous adjustment instruction according to the comparison result: If the current tension value is greater than the upper limit value of the target tension range, the controller controls the first servo motor to drive the sliding mounting seat to translate, increases the spacing between the drafting roller group to reduce the tightness of the polyamide yarn, and reduces the rotation speed of the second servo motor to reduce the false twist degree, at the same time, the cam transmission mechanism drives the cam to rotate to reduce the compression amount of the disc spring group to reduce the elasticizing pressure, and the three are synchronously adjusted until the current tension value falls to the target range; If the current tension value is less than the lower limit value of the target tension range, the controller outputs a reverse adjustment instruction, the linear guide drives the sliding mounting seat to translate reversely, reduces the spacing between the drafting roller group to increase the tightness of the polyamide yarn, and increases the rotation speed of the second servo motor to increase the false twist degree, at the same time, the cam transmission mechanism drives the cam to rotate reversely to increase the compression amount of the disc spring group to increase the elasticizing pressure, and the three are synchronously adjusted until the current tension value rises to the target range; S5, continuous setting and winding: steps S3-S4 are repeated during the whole elasticizing process, the controller dynamically corrects the adjustment parameters through the PID adjustment algorithm, so that the tension, false twist degree and elasticizing pressure of the polyamide yarn are continuously maintained in the pre-set range; after heat setting by the setting mechanism, the winding is completed by the take-up mechanism, and the polyamide yarn meeting the target elasticizing effect is obtained.

[0015] Therefore, the application adopts the above-mentioned intelligent polyamide filament elasticizing device and elasticizing method, the interval adjustment design of the driving stretching roller and the driven stretching roller in the stretching mechanism realizes the accurate control of the polyamide filament clamping pressure and the tightness, the interval between the two rollers can be flexibly changed through the translation of the sliding mounting seat along the linear guide rail, the clamping pressure increases and the tension improves when the interval decreases, the clamping pressure decreases and the tension decreases when the interval increases, the polyamide filament breakage caused by excessive tension can be avoided, and the elasticizing failure caused by insufficient tension can be prevented, and the stability of the processing process is greatly improved. The interval adjustment structure can be adapted to polyamide filament raw materials of different specifications, for thick polyamide filaments, the initial interval can be increased to avoid fiber damage, and then the interval is accurately reduced to meet the stretching demand, for thin polyamide filaments, the interval can be controlled to avoid the breakage caused by excessive clamping force, the tightness is uniformly ensured through slight adjustment, and the adaptability and universality of the device to multiple specifications of raw materials are significantly improved. The elasticizing pressure adjustment assembly of the elasticizing mechanism has unique advantages, the pre-compression state of the disc spring set provides stable initial clamping pressure for polyamide filament elasticizing, and the problems of polyamide filament slipping or insufficient elasticizing in the processing process are avoided, and the cooperation of the cam transmission mechanism and the disc spring set can drive the cam to rotate through the cam transmission mechanism, accurately change the spring compression amount, and then realize the linear adjustment of the elasticizing pressure, ensure that the elasticizing force and the tension state of the polyamide filament are accurately matched, and the controllability of the elasticizing effect is improved. The temperature closed-loop control of the setting mechanism further consolidates the elastic form of the polyamide filament, and comprehensively improves the product quality and the qualified rate. Meanwhile, the overall structure of the device is simple, the layout of each mechanism is reasonable, and the device is easy to manufacture, install and maintain, and has good industrialization popularization value.

[0016] The technical solutions of the application will be further described in detail below with reference to the drawings and examples. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a schematic view of the overall structure of the intelligent polyamide filament elasticizing device of the application. Figure 2 It is a side view of the intelligent polyamide filament elasticizing device of the application. Figure 3 It is a top view of the intelligent polyamide filament elasticizing device of the application. Figure 4 It is a schematic view of the cross-sectional structure at a. Figure 2

[0018] ​Reference signs: 1, pay-off mechanism; 2, drafting mechanism; 3, elasticizing mechanism; 4, setting mechanism; 5, take-up mechanism; 6, tension detection assembly; 11, pay-off shaft; 12, pay-off drive motor; 21, driving drafting roller; 22, driven drafting roller; 23, linear guide rail; 24, sliding mounting seat; 25, rolling screw; 26, first servo motor; 31, false twister; 32, second servo motor; 33, pressure roller; 34, elasticizing work roller; 35, disc spring group; 36, cam transmission mechanism; 37, sliding sleeve rod; 41, setting roller; 42, heating assembly; 51, take-up shaft; 52, take-up drive motor; 61, S-shaped tension sensor; 62, godet. DETAILED DESCRIPTION

[0019] In order to better understand the above technical solutions, the above technical solutions will be described in detail below in combination with the drawings of the specification and specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0020] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms "a", "said" and "the" used in the embodiments of the present application and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. "Multiple" generally includes at least two.

[0021] It should also be noted that the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the goods or devices including a series of elements not only include those elements, but also include other elements not explicitly listed, or include elements inherent to such goods or devices. Without more limitation, the element defined by the sentence "including a" does not exclude the presence of other identical elements in the goods or devices including the element.

[0022] As shown in Figures 1-4 An intelligent polyamide yarn elasticizing device is provided, which comprises a rack, and pay-off mechanism 1, drafting mechanism 2, elasticizing mechanism 3, setting mechanism 4 and take-up mechanism 5 arranged in sequence along the polyamide yarn conveying direction, and further comprises a synchronous adjustment system for synchronously adjusting the tightness of the polyamide yarn and the elasticizing degree; the synchronous adjustment system comprises a tension detection assembly 6 and a controller; the connection relationship of each mechanism and assembly is as follows: The rack provides a mounting basis for all mechanisms and the synchronous adjustment system, and the pay-off mechanism 1, the drafting mechanism 2, the elasticizing mechanism 3, the setting mechanism 4, the take-up mechanism 5 and the synchronous adjustment system are all assembled on the rack; The unwinding mechanism 1 is arranged at the input end of the frame, and the output end thereof corresponds to the input end of the tension detection assembly 6, for conveying the nylon yarn to be processed to the subsequent mechanism; The tension detection assembly 6 is arranged between the unwinding mechanism 1 and the drafting mechanism 2, the input end thereof is connected with the output end of the unwinding mechanism 1, the output end thereof is connected with the input end of the drafting mechanism 2, for detecting the current tension value of the nylon yarn in real time, and transmitting the detection signal to the controller; The drafting mechanism 2 is arranged between the tension detection assembly 6 and the elasticizing mechanism 3, the input end thereof is connected with the output end of the tension detection assembly 6, the output end thereof is connected with the input end of the elasticizing mechanism 3, for performing the drafting treatment on the nylon yarn, and is provided with a spacing adjusting structure for adjusting the tightness of the nylon yarn; The elasticizing mechanism 3 is arranged between the drafting mechanism 2 and the setting mechanism 4, the input end thereof is connected with the output end of the drafting mechanism 2, the output end thereof is connected with the input end of the setting mechanism 4, for applying the elasticizing force to the nylon yarn, and is provided with a false twist assembly and an elasticizing pressure adjusting assembly; The setting mechanism 4 is arranged between the elasticizing mechanism 3 and the take-up mechanism 5, the input end thereof is connected with the output end of the elasticizing mechanism 3, the output end thereof is connected with the input end of the take-up mechanism 5, for performing the heat setting treatment on the nylon yarn after the elasticizing; The take-up mechanism 5 is arranged at the output end of the frame, the input end thereof is connected with the output end of the setting mechanism 4, for winding the nylon yarn after the setting, and is matched with the conveying speed of the unwinding mechanism 1 synchronously; The controller is electrically connected with the driving components of the tension detection assembly 6, the unwinding mechanism 1, the drafting mechanism 2 and the take-up mechanism 5 respectively, pre-stores the target tension range and the matching target false twist degree range and target elasticizing pressure range, for receiving the tension detection signal and outputting the synchronous adjusting instruction; according to the deviation of the current tension value transmitted by the tension detection assembly 6 and the target tension range, the controller maintains the tension of the nylon yarn in the target tension range by the synchronous adjustment of the above three parameters, and the false twist degree and the elasticizing pressure are matched with the corresponding target range respectively.

[0023] The unwinding mechanism 1 comprises an unwinding shaft 11, an unwinding driving motor 12 and a bearing seat; the bearing seat is fixed on the frame, and the unwinding shaft 11 is rotatably connected in the bearing seat through bearings; the output shaft of the unwinding driving motor 12 is drivingly connected with the unwinding shaft 11 through a shaft coupling, for driving the unwinding shaft 11 to release the nylon yarn at a uniform speed; the unwinding driving motor 12 is electrically connected with the controller, for controlling the start-stop state of the unwinding shaft 11.

[0024] The tension detection assembly 6 comprises an S-shaped tension sensor 61, a guide pulley 62 and a mounting bracket; the mounting bracket is fixed on the rack, and the S-shaped tension sensor 61 is fixed on the mounting bracket; the guide pulley 62 is rotatably connected to the force-sensitive detection end of the S-shaped tension sensor 61 through a bearing, and the nylon filament is wound around the guide pulley 62 in an S shape; the S-shaped tension sensor 61 converts the detected tension physical quantity into a standard electrical signal and transmits it to the controller.

[0025] The drafting mechanism 2 comprises at least two groups of drafting roller groups arranged along the nylon filament conveying direction, a drafting driving motor and a spacing adjustment structure; each group of drafting roller groups is composed of a driving drafting roller 21 and a driven drafting roller 22, and the driving drafting roller 21 is drivingly connected with the drafting driving motor through a shaft coupling; the spacing adjustment structure comprises a linear guide rail 23 and a sliding mounting seat 24, a rolling lead screw 25 and a first servo motor 26, the axis of the rolling lead screw is parallel to the extension direction of the linear guide rail, the first servo motor 26 is fixed on the rack through a motor base, and the output shaft thereof is drivingly connected with one end of the rolling lead screw through a shaft coupling; the linear guide rail 23 is fixed on the rack and extends in a direction perpendicular to the axis of the drafting roller group; the sliding mounting seat 24 is slidingly connected on the linear guide rail 23, and the driven drafting roller 22 is rotatably connected on the sliding mounting seat 24 through a bearing, and the spacing adjustment between the driving drafting roller 21 and the driven drafting roller 22 is realized by the translation of the sliding mounting seat 24.

[0026] Specifically, the driving drafting roller 21 and the driven drafting roller 22 realize drafting conveying by clamping the nylon filament and rotating synchronously, and the spacing between the two directly determines the clamping pressure on the nylon filament: When the spacing is reduced, the clamping pressure is increased, the tightness of the nylon filament between the roller groups is improved (the tension is increased), and stronger drafting effect can be realized; When the spacing is increased, the clamping pressure is reduced, the tightness of the nylon filament is reduced (the tension is reduced), and the drafting force is weakened; This adjustment directly responds to the pain point that it is difficult to change the tightness of the nylon filament according to the needs, quickly matches the target tension range through spacing change, and avoids the breakage caused by excessive tension and the failure of elastic addition caused by small tension.

[0027] Different specifications of nylon filament raw materials, different line diameters (such as 50-300D) and different materials (nylon 6 and nylon 66) have different breaking strengths and elastic moduli, and have different requirements for clamping force and tightness: thick line diameter nylon filament needs to increase the initial spacing to avoid excessive extrusion damage to the fiber, and at the same time, the spacing is accurately adjusted to meet the drafting tension requirement; thin line diameter nylon filament needs to control the spacing to avoid excessive clamping force and direct breakage, and the spacing is slightly adjusted to ensure uniform tightness; the device realizes the versatility of processing of multiple specifications of nylon filament and improves the adaptability of the equipment.

[0028] The pitch adjustment is not an independent action, but is linked with the false twist degree and the elastic pressure through a synchronous driving assembly: when the tension detection assembly 6 detects that the nylon wire tension deviates from the target range, the pitch adjustment, the false twist degree adjustment and the elastic pressure adjustment are synchronously operated to ensure that the matching relationship between the tightness and the elastic force is stable; avoiding the disorder of the elastic effect caused by the single adjustment of a parameter, such as the insufficient elasticity of the nylon wire caused by the decrease of the tension without the decrease of the elastic pressure; the uneven elastic caused by the increase of the tension without the increase of the false twist degree.

[0029] The stability of the stretching and conveying is ensured, when the pitch is too large, the nylon wire may slip between the roller groups, resulting in unstable conveying speed, out-of-control stretching ratio, and further causing the false twist degree fluctuation in the elastic process; when the pitch is too small, in addition to the easy breakage of the tension, the nylon wire surface may be damaged (such as fluffing and scratching) due to excessive extrusion, affecting the quality of the finished product; through the accurate adjustment of the pitch, the conveying effect of stable clamping without slipping and controllable tension without breaking can be realized, providing stable preconditions for the subsequent elasticizing and setting processes.

[0030] The false twist assembly of the elasticizing mechanism 3 includes a false twister 31 and a second servo motor 32; the output shaft of the second servo motor 32 is drivingly connected with the false twister 31 through a shaft coupling, forming a false twist degree adjustment structure; the second servo motor 32 is electrically connected with a controller, the controller adjusts the rotating speed of the second servo motor 32, and then linearly changes the false twist degree of the false twister 31.

[0031] The elastic pressure adjustment assembly of the elasticizing mechanism 3 includes a pressure roller 33, an elastic working roller 34, a disc spring set 35 and a cam transmission mechanism 36; the elastic working roller 34 is correspondingly arranged at the output end of the false twister 31, and the pressure roller 33 is arranged in parallel with the elastic working roller 34, forming an elastic channel for the nylon wire to pass through.

[0032] Two sliding sleeve rods 37 are connected to the both ends of the pressure roller 33 perpendicularly to the axis of the pressure roller 33, the sliding sleeve rod 37 includes an external sleeve rod and an internal rod, one end of the external sleeve rod is fixedly connected with the both ends of the pressure roller 33, the other end is slidingly sleeved on the internal rod, one end of the internal rod is fixedly connected with the rack, and the other end is arranged in the external sleeve rod, the disc spring set 35 is arranged at one end of the internal rod and abuts against the external sleeve rod, and the cam transmission mechanism 36 abuts against one end of the disc spring set 35 away from the pressure roller 33, forming a pressure adjustment structure.

[0033] Specifically, the pressurizing roller 33 and the elasticizing working roller 34 are arranged in parallel and opposite to each other, and a gap between the two forms an elasticizing channel through which the polyamide yarn is clamped by the two rollers; in the pre-compressed state, an initial clamping pressure is formed between the pressurizing roller 33 and the elasticizing working roller 34, which provides a basic force for the elasticizing of the polyamide yarn, ensures that the polyamide yarn can be stably extruded during the elasticizing process, and avoids slipping or insufficient elasticizing. The cam transmission mechanism 36 is in abutment with one end of the disc spring set 35 away from the pressurizing roller 33, and the cam is fixedly connected with the output shaft of the cam transmission mechanism 36 in the synchronous driving assembly, and the rotation of the cam transmission mechanism 36 directly drives the rotation of the cam; the cam is an eccentric structure, and the distance from the rim to the rotation center changes with the rotation angle, and during the rotation process, the disc spring set 35 is pushed or released by the push rod: when the controller issues an instruction to increase the elasticizing pressure, the cam transmission mechanism 36 drives the cam to rotate forward, the push section (the part where the rim is farther away from the rotation center) of the cam gradually pushes the push rod, and the push rod moves towards the disc spring set 35, so that the compression amount of the disc spring set 35 increases; according to Hooke's law, the greater the spring compression amount, the greater the elastic push force, and the push force is transmitted to the pressurizing roller 33, so that the clamping pressure of the pressurizing roller 33 on the elasticizing working roller 34 increases, and finally the pressure acting on the polyamide yarn between the two rollers increases synchronously; when the controller issues an instruction to reduce the elasticizing pressure, the cam transmission mechanism 36 drives the cam to rotate reversely, the return section (the part where the rim is closer to the rotation center) of the cam is turned to the push rod, the disc spring set 35 is released from the pressure state, the compression amount decreases, the elastic push force weakens, the clamping pressure of the pressurizing roller 33 on the elasticizing working roller 34 decreases, and the elasticizing pressure acting on the polyamide yarn decreases synchronously.

[0034] The setting mechanism 4 comprises a setting roller 41, a heating assembly 42 and a setting support; the setting support is fixed on the frame, and the setting roller 41 is rotatably connected to the setting support through a bearing; the heating assembly 42 is arranged around the setting roller 41 and is electrically connected with a temperature controller, and the temperature controller is signal-connected with the controller and used to maintain the surface temperature of the setting roller 41 within a preset range.

[0035] The take-up mechanism 5 comprises a take-up shaft 51, a take-up drive motor 52 and a take-up support; the take-up support is fixed on the frame, and the take-up shaft 51 is rotatably connected to the take-up support through a bearing; the output shaft of the take-up drive motor 52 is drivingly connected with the take-up shaft 51 through a shaft coupling, and the take-up drive motor 52 is electrically connected with the controller to ensure that the take-up speed is synchronous with the conveying speed of the pay-off mechanism 1.

[0036] An elasticizing method of an intelligent polyamide yarn elasticizing device, comprising the following steps: S1, parameter presetting: according to the target elastic parameter and the line diameter requirement of the user for the nylon filament, the corresponding target tension range, target false twist degree range and target elastic pressure range are determined, and the parameter range and adjustment proportion coefficient are pre-stored in the parameter storage module of the controller; S2, filament preparation: one end of the nylon filament to be processed is fixed on the releasing shaft 11 of the releasing mechanism 1, and then passes through the guide wheel 62 of the tension detection assembly 6, the driving tension roller 21 and the driven tension roller 22 of the drafting mechanism 2, the pressure roller 33 and the elastic working roller 34 of the elastic mechanism 3, the setting roller 41 of the setting mechanism 4, and finally is fixed on the take-up shaft 51 of the take-up mechanism 5; S3, start running: the controller starts the releasing drive motor 12, the drafting drive motor and the take-up drive motor 52, the releasing shaft 11 releases the nylon filament at a constant speed, the take-up shaft 51 synchronously winds the nylon filament, the tension detection assembly 6 real-time collects the current tension value of the nylon filament and transmits it to the controller; S4, synchronous adjustment: the controller compares the current tension value with the target tension range in real time, and outputs a synchronous adjustment instruction according to the comparison result: If the current tension value is greater than the upper limit value of the target tension range, the controller controls the first servo motor 2623 to drive the sliding mounting seat 24 to translate, increases the distance between the drafting roller set to reduce the tightness of the nylon filament, and reduces the rotation speed of the second servo motor 32 to reduce the false twist degree, at the same time, the cam transmission mechanism 36 drives the cam to rotate to reduce the compression amount of the disc spring set 35 to reduce the elastic pressure, and the three are synchronously adjusted to the current tension value to fall back to the target range; If the current tension value is less than the lower limit value of the target tension range, the controller outputs a reverse adjustment instruction, the linear guide rail 23 drives the sliding mounting seat 24 to translate reversely, reduces the distance between the drafting roller set to increase the tightness of the nylon filament, and increases the rotation speed of the second servo motor 32 to increase the false twist degree, at the same time, the cam transmission mechanism 36 drives the cam to rotate reversely to increase the compression amount of the disc spring set 35 to increase the elastic pressure, and the three are synchronously adjusted to the current tension value to rise to the target range; S5, continuous setting and winding: steps S3-S4 are repeated during the whole elastic process, the controller dynamically corrects the adjustment parameters through the PID adjustment algorithm, so that the tension, false twist degree and elastic pressure of the nylon filament are continuously maintained in the pre-set range; after heat setting by the setting mechanism 4, the take-up mechanism 5 completes the winding to obtain the nylon filament meeting the target elastic effect.

[0037] The working process of the intelligent nylon filament elasticizing device is carried out in an orderly manner around parameter presetting, filament threading preparation, starting operation, dynamic adjustment and continuous setting and winding, and each mechanism and the core adjusting structure cooperate to complete precise elasticizing. First, parameter presetting is performed. According to the target elastic parameters and line diameter requirements of the nylon filament of the user, the operator sets the corresponding target tension range, target false twist degree range and target elasticizing pressure range in the controller, and stores these parameters and the corresponding adjusting proportionality coefficient in the parameter storage module of the controller, thereby providing accurate basis for subsequent processing. Subsequently, filament threading preparation is carried out. One end of the nylon filament to be processed is fixed on the pay-off shaft 11 of the pay-off mechanism 1, and then passes through the guide wheel 62 of the tension detection assembly 6, the clamping gap between the driving tension roller 21 and the driven tension roller 22 in the tension mechanism 2, the elasticizing channel formed by the pressure roller 33 and the elasticizing working roller 34 in the elasticizing mechanism 3, and the setting roller 41 of the setting mechanism 4, and is finally fixed on the take-up shaft 51 of the take-up mechanism 5, thereby ensuring smooth conveying of the nylon filament between the mechanisms without jamming or deviation. In the starting operation stage, the controller sends a starting instruction, and the pay-off drive motor 12, the tension drive motor and the take-up drive motor 52 are started synchronously. The pay-off shaft 11 releases the nylon filament at a constant speed under the drive of the pay-off drive motor, the take-up shaft 51 is wound synchronously, and the tension roller group is driven by the tension drive motor to stably convey the nylon filament to the subsequent mechanism. In this process, the S-shaped tension sensor 61 of the tension detection assembly 6 collects the current tension value of the nylon filament in real time through the guide wheel 62, and converts it into a standard electrical signal for continuous transmission to the controller to provide real-time feedback for dynamic adjustment. Dynamic adjustment is the core working link. The controller accurately compares the real-time received tension value with the preset target range, and outputs a targeted adjusting instruction according to the deviation. If the current tension value exceeds the upper limit of the target range, the controller controls the first servo motor 26 to drive the sliding mounting seat 24 to translate along the linear guide rail 23, thereby increasing the distance between the driving tension roller 21 and the driven tension roller 22, reducing the clamping pressure on the nylon filament, and reducing the tightness of the nylon filament. At the same time, the speed of the second servo motor 32 is reduced to reduce the false twist degree of the false twister 31. In addition, the controller controls the cam transmission mechanism 36 to drive the cam transmission mechanism 36 to rotate. The return section of the cam turns the push rod, the compression state of the disc spring set 35 is released, the compression amount is reduced, the elastic pushing force is weakened, the clamping pressure of the pressure roller 33 on the elasticizing working roller 34 is reduced, and finally the tension value of the nylon filament falls to the target range. If the current tension value is lower than the lower limit of the target range, the controller outputs a reverse adjusting instruction. The linear guide rail 23 drives the sliding mounting seat 24 to move in the opposite direction, thereby reducing the distance between the tension roller group, increasing the clamping pressure and the tightness of the nylon filament, increasing the speed of the second servo motor 32 to increase the false twist degree of the false twister 31, and driving the cam transmission mechanism 36 to rotate in the forward direction. The push section of the cam pushes the push rod, increases the compression amount of the disc spring set 35, increases the elastic pushing force and the elasticizing pressure, and finally the tension value reaches the target requirement.During the whole elasticizing process, the controller dynamically corrects each adjusting parameter through the PID adjusting algorithm to ensure that the tension, false twist degree and elasticizing pressure of the polyamide yarn are always accurately matched with the target requirements; the polyamide yarn after elasticizing enters the setting mechanism 4, the heating assembly 42 maintains the setting roller 41 at a preset temperature under the regulation of the temperature controller, and the polyamide yarn is heat-set to fix the elastic form, and finally is continuously wound on the take-up shaft 51 of the take-up mechanism 5 to obtain the polyamide yarn product meeting the target quality requirements.

[0038] Therefore, the intelligent polyamide yarn elasticizing device and the elasticizing method thereof have the following advantages. The distance adjustment design of the driving stretching roller and the driven stretching roller in the stretching mechanism realizes accurate control of the clamping pressure and the tightness of the polyamide yarn. The distance between the two rollers can be flexibly changed by the translation of the sliding mounting seat along the linear guide rail. When the distance is reduced, the clamping pressure and the tension are increased. When the distance is increased, the clamping pressure and the tension are reduced. The device can not only avoid the breakage of the polyamide yarn caused by excessive tension, but also prevent the elasticizing failure caused by insufficient tension, thereby greatly improving the stability of the processing process. The distance adjustment structure can be adapted to polyamide yarns of different specifications. For thick polyamide yarns, the initial distance can be increased to avoid fiber damage, and then the distance can be accurately reduced to meet the stretching requirement. For thin polyamide yarns, the distance can be controlled to prevent the yarn from being pulled apart due to excessive clamping force. The tightness is uniformly ensured by slight adjustment, thereby significantly improving the adaptability and universality of the device to different specifications of raw materials. The elasticizing pressure adjusting assembly of the elasticizing mechanism has unique advantages. The pre-compressed state of the disc spring set provides stable initial clamping pressure for the elasticizing of the polyamide yarn, thereby avoiding the problems of slipping or insufficient elasticizing of the polyamide yarn during the processing. The cooperation of the cam transmission mechanism and the disc spring set can drive the cam to rotate through the cam transmission mechanism, accurately change the spring compression amount, and realize linear adjustment of the elasticizing pressure, thereby ensuring accurate matching of the elasticizing degree and the tension state of the polyamide yarn and improving the controllability of the elasticizing effect. In addition, the stable conveying effect caused by the distance adjustment of the stretching rollers effectively avoids the fluctuation of the conveying speed and the out-of-control of the draft ratio caused by the slipping of the polyamide yarn between the roller sets, thereby providing a stable precondition for the subsequent elasticizing and setting processes. The cooperation of the sliding sleeve rod and the disc spring set in the elasticizing pressure adjusting assembly ensures the uniformity of the pressure transmission of the pressure roller, and the temperature closed-loop control of the setting mechanism further consolidates the elastic form of the polyamide yarn, thereby improving the consistency of the elastic parameters and the surface quality of the finished polyamide yarn, reducing the raw material loss and downtime frequency caused by parameter imbalance, improving the production efficiency, and having good popularization value due to the simple and reliable overall structure design and easy industrialization manufacturing and maintenance.

[0039] It should be pointed out finally that the above examples are only used to illustrate the technical solutions of the present application but not to limit it, and although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can still be modified or replaced equivalently, and these modifications or equivalent replacements should not make the modified technical solutions deviate from the spirit and scope of the technical solutions of the present application.

Claims

1. An intelligent nylon yarn texturing device, characterized in that, The device includes a frame, and a yarn feeding mechanism, a drafting mechanism, a texturing mechanism, a shaping mechanism, and a take-up mechanism arranged sequentially along the nylon yarn conveying direction. It also includes a synchronization adjustment system for simultaneously adjusting the tension of the nylon yarn and the texturing force; the synchronization adjustment system includes a tension detection component and a controller; the connection relationships of each mechanism and component are as follows: The frame provides the mounting base for all mechanisms and the synchronization adjustment system. The wire feeding mechanism, drafting mechanism, texturing mechanism, shaping mechanism, take-up mechanism and synchronization adjustment system are all mounted on the frame. The wire feeding mechanism is located at the input end of the frame, and its output end corresponds to the input end of the tension detection component, and is used to feed the nylon yarn to be processed to the subsequent mechanism. The tension detection component is located between the pay-off mechanism and the drawing mechanism. Its input end is connected to the output end of the pay-off mechanism, and its output end is connected to the input end of the drawing mechanism. It is used to detect the current tension value of the nylon yarn in real time and transmit the detection signal to the controller. The stretching mechanism is located between the tension detection component and the texturing mechanism. Its input end is connected to the output end of the tension detection component, and its output end is connected to the input end of the texturing mechanism. It is used to stretch nylon yarn and has a spacing adjustment structure that can adjust the tension of the nylon yarn. The texturing mechanism is located between the drafting mechanism and the shaping mechanism. Its input end is connected to the output end of the drafting mechanism, and its output end is connected to the input end of the shaping mechanism. It is used to apply a texturing force to the nylon yarn and is equipped with a false twist component and a texturing pressure adjustment component. The shaping mechanism is located between the texturing mechanism and the take-up mechanism. Its input end is connected to the output end of the texturing mechanism, and its output end is connected to the input end of the take-up mechanism. It is used to perform heat shaping treatment on the texturized nylon yarn. The take-up mechanism is located at the output end of the frame, and its input end is connected to the output end of the shaping mechanism. It is used to take up the shaped nylon yarn and is synchronized with the conveying speed of the unwinding mechanism. The controller is electrically connected to the tension detection component and the drive components of the pay-off mechanism, drafting mechanism, and take-up mechanism. It has pre-stored the target tension range and the matching target false twist range and target texturing pressure range. It is used to receive tension detection signals and output synchronous adjustment commands. Based on the deviation between the current tension value transmitted by the tension detection component and the target tension range, the controller adjusts the above three parameters synchronously to maintain the tension of the nylon yarn within the target tension range, and the false twist and texturing pressure are matched with the corresponding target ranges.

2. The intelligent nylon yarn texturing device according to claim 1, characterized in that, The wire feeding mechanism includes a wire feeding shaft, a wire feeding drive motor, and a bearing housing; the bearing housing is fixed on the frame, and the wire feeding shaft is rotatably connected to the bearing housing through the bearing; the output shaft of the wire feeding drive motor is connected to the wire feeding shaft through a coupling, and is used to drive the wire feeding shaft to release nylon yarn at a uniform speed; the wire feeding drive motor is electrically connected to the controller to control the start and stop status of the wire feeding shaft.

3. The intelligent nylon yarn texturing device according to claim 1, characterized in that, The tension detection assembly includes an S-shaped tension sensor, a guide wheel, and a mounting bracket; the mounting bracket is fixed on the frame, and the S-shaped tension sensor is fixedly mounted on the mounting bracket; the guide wheel is rotatably connected to the force-sensitive detection end of the S-shaped tension sensor through a bearing, and the nylon yarn passes around the guide wheel in an S-shape; the S-shaped tension sensor converts the detected tension physical quantity into a standard electrical signal and transmits it to the controller.

4. The intelligent nylon yarn texturing device according to claim 1, characterized in that, The drafting mechanism includes at least two sets of drafting rollers arranged along the nylon filament conveying direction, a drafting drive motor, and a spacing adjustment structure. Each set of drafting rollers consists of an active drafting roller and a driven drafting roller. The active drafting roller is connected to the drafting drive motor via a coupling. The spacing adjustment structure includes a linear guide rail and a sliding mounting base, as well as a ball screw and a first servo motor. The axis of the ball screw is parallel to the extension direction of the linear guide rail. The first servo motor is fixed to the frame via a motor mount, and its output shaft is connected to one end of the ball screw via a coupling. The linear guide rail is fixed to the frame and extends in a direction perpendicular to the axis of the drafting roller set. The sliding mounting base is slidably connected to the linear guide rail, and the driven drafting roller is rotatably connected to the sliding mounting base via a bearing. The spacing between the active and driven drafting rollers is adjusted by the translation of the sliding mounting base.

5. The intelligent nylon yarn texturing device according to claim 1, characterized in that, The false twist assembly of the texturing mechanism includes a false twister and a second servo motor; the output shaft of the second servo motor is connected to the false twister via a coupling to form a false twist adjustment structure; the second servo motor is electrically connected to a controller, and the controller adjusts the speed of the second servo motor to linearly change the false twist of the false twister.

6. The intelligent nylon yarn texturing device according to claim 1, characterized in that, The texturing pressure adjustment component of the texturing mechanism includes a pressure roller, a texturing working roller, a disc spring group, and a cam transmission mechanism; the texturing working roller is arranged correspondingly to the output end of the false twister, and the pressure roller and the texturing working roller are arranged in parallel and opposite directions to form a texturing channel through which the nylon yarn passes.

7. The intelligent nylon yarn texturing device according to claim 6, characterized in that, Two sliding sleeve rods are connected to both ends of the pressure roller perpendicular to its axis. Each sliding sleeve rod includes an outer sleeve rod and an inner sleeve rod. One end of the outer sleeve rod is fixedly connected to both ends of the pressure roller, and the other end is slidably sleeved on the inner sleeve rod. One end of the inner sleeve rod is fixedly connected to the frame, and the other end is located inside the outer sleeve rod. One end of the disc spring assembly is located on the inner sleeve rod and abuts against the outer sleeve rod. The cam transmission mechanism abuts against the end of the disc spring assembly away from the pressure roller, thus forming a pressure adjustment structure.

8. The intelligent nylon yarn texturing device according to claim 1, characterized in that, The shaping mechanism includes a shaping roller, a heating component, and a shaping bracket; the shaping bracket is fixed on the frame, and the shaping roller is rotatably connected to the shaping bracket via bearings; the heating component is arranged around the shaping roller and is electrically connected to a temperature controller, which is signal-connected to a controller to maintain the surface temperature of the shaping roller within a preset range.

9. The intelligent nylon yarn texturing device according to claim 1, characterized in that, The take-up mechanism includes a take-up shaft, a take-up drive motor, and a take-up bracket; the take-up bracket is fixed on the frame, and the take-up shaft is rotatably connected to the take-up bracket through bearings; the output shaft of the take-up drive motor is connected to the take-up shaft through a coupling, and the take-up drive motor is electrically connected to the controller to ensure that the take-up speed is synchronized with the delivery speed of the unwinding mechanism.

10. A texturing method for the intelligent nylon yarn texturing device as described in any one of claims 1-9, characterized in that, Includes the following steps: S1. Parameter preset: Based on the user's target elasticity parameters and wire diameter requirements for nylon yarn, determine the corresponding target tension range, target false twist range, and target springing pressure range, and pre-store the parameter range and adjustment ratio coefficient in the parameter storage module of the controller. S2. Threading preparation: Fix one end of the nylon yarn to be processed on the pay-off shaft of the pay-off mechanism, and then pass it in sequence around the guide wheel of the tension detection component, between the active and driven draw rollers of the draw mechanism, between the pressure roller and the texturing working roller of the texturing mechanism, and the setting roller of the setting mechanism, and finally fix it on the take-up shaft of the take-up mechanism. S3. Start-up: The controller starts the pay-off drive motor, the drafting drive motor, and the take-up drive motor. The pay-off shaft releases the nylon yarn at a uniform speed, and the take-up shaft simultaneously winds up the nylon yarn. The drafting roller group clamps the nylon yarn and conveys it at a uniform speed. The tension detection component collects the current tension value of the nylon yarn in real time and transmits it to the controller. S4. Synchronous Adjustment: The controller compares the current tension value with the target tension range in real time and outputs a synchronous adjustment command based on the comparison result. If the current tension value is greater than the upper limit of the target tension range, the controller controls the first servo motor to drive the sliding mounting seat to translate, increasing the spacing between the drafting rollers to reduce the tightness of the nylon yarn, and reducing the speed of the second servo motor to reduce the false twist. At the same time, the cam transmission mechanism drives the cam to rotate, reducing the compression of the disc spring group to reduce the springing pressure. All three are adjusted synchronously until the current tension value falls back to the target range. If the current tension value is less than the lower limit of the target tension range, the controller outputs a reverse adjustment command. The linear guide rail drives the sliding mounting seat to move in the reverse direction, reducing the spacing between the drafting rollers to increase the tension of the nylon yarn and increasing the speed of the second servo motor to increase the false twist. At the same time, the cam transmission mechanism drives the cam to rotate in the reverse direction, increasing the compression of the disc spring group to increase the springing pressure. All three are adjusted synchronously until the current tension value rises to the target range. S5. Continuous setting and winding: Steps S3-S4 are repeated throughout the texturing process. The controller dynamically corrects the adjustment parameters through the PID adjustment algorithm to keep the tension, false twist, and texturing pressure of the nylon yarn within the preset range. After heat setting by the setting mechanism, the winding mechanism completes the winding to obtain nylon yarn that meets the target texturing effect.

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