CN120817488A - A high-speed loom yarn unwinding guide device - Google Patents
A high-speed loom yarn unwinding guide deviceInfo
- Publication number
- CN120817488A CN120817488A CN202511326095.0A CN202511326095A CN120817488A CN 120817488 A CN120817488 A CN 120817488A CN 202511326095 A CN202511326095 A CN 202511326095A CN 120817488 A CN120817488 A CN 120817488A
- Authority
- CN
- China
- Prior art keywords
- yarn
- speed
- tension
- balloon
- yarn unwinding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H49/00—Unwinding or paying-out filamentary material; Supporting, storing or transporting packages from which filamentary material is to be withdrawn or paid-out
- B65H49/18—Methods or apparatus in which packages rotate
- B65H49/20—Package-supporting devices
- B65H49/32—Stands or frameworks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H49/00—Unwinding or paying-out filamentary material; Supporting, storing or transporting packages from which filamentary material is to be withdrawn or paid-out
- B65H49/36—Securing packages to supporting devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H59/00—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
- B65H59/10—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by devices acting on running material and not associated with supply or take-up devices
- B65H59/36—Floating elements compensating for irregularities in supply or take-up of material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H59/00—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
- B65H59/40—Applications of tension indicators
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H63/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H67/00—Replacing or removing cores, receptacles, or completed packages at paying-out, winding, or depositing stations
- B65H67/02—Arrangements for removing spent cores or receptacles and replacing by supply packages at paying-out stations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/30—Handled filamentary material
- B65H2701/31—Textiles threads or artificial strands of filaments
Landscapes
- Engineering & Computer Science (AREA)
- Quality & Reliability (AREA)
- Looms (AREA)
Abstract
本发明涉及纺织加工技术领域，尤其涉及一种高速织布机放纱纱架退绕导向装置，包括导向环和放纱架，所述放纱架的内部分别固定安装有横向梁和竖向梁，竖向梁的表面安装有用于放纱辊固定的定位机构，导向环设置在横向梁的上表面。本发明通过智能闭环控制系统实现了高速退绕过程中纱线气圈的动态稳定。该系统集成高速工业相机、张力传感器与激光测速仪，实时采集气圈直径、张力及纱线速度数据，并由可编程逻辑控制器基于PID算法精确调节导向环间距，使气圈始终维持在理想直径范围内。此举显著降低了纱线抖动与断头率，提升了织造效率与布面质量，同时具备超速制动与张力冗余校准功能，保障了高速运行的可靠性与安全性。
The present invention relates to the field of textile processing technology, and in particular to an unwinding guide device for a yarn release frame of a high-speed loom, comprising a guide ring and a yarn release frame, wherein a transverse beam and a vertical beam are fixedly installed inside the yarn release frame respectively, a positioning mechanism for fixing a yarn release roller is installed on the surface of the vertical beam, and the guide ring is arranged on the upper surface of the transverse beam. The present invention realizes the dynamic stabilization of the yarn balloon during high-speed unwinding through an intelligent closed-loop control system. The system integrates a high-speed industrial camera, a tension sensor and a laser velocimeter to collect balloon diameter, tension and yarn speed data in real time, and the programmable logic controller accurately adjusts the guide ring spacing based on the PID algorithm to keep the balloon within the ideal diameter range at all times. This significantly reduces yarn jitter and breakage rate, improves weaving efficiency and cloth quality, and at the same time has overspeed braking and tension redundancy calibration functions to ensure the reliability and safety of high-speed operation.
Description
Technical Field
The invention relates to the technical field of textile processing, in particular to an unwinding guide device for a yarn-releasing creel of a high-speed loom.
Background
Unwinding refers to the process of continuously and uniformly releasing yarns wound on bobbins, beams or other packages under the traction of external force according to the process requirements. In high speed looms, unwinding usually occurs at the yarn-laying creel, where the yarn is pulled from the surface of a stationary yarn-laying roll, gradually stripped in the axial direction and "balloon" formed under centrifugal force, and then enters the weaving system via guide rings, tension wheels, etc., the quality of the unwinding directly affects the yarn tension stability, breakage rate and final cloth cover quality.
In the unwinding process of the traditional high-speed loom, too large balloon can cause the friction aggravation and abrupt tension change of yarns and peripheral components, so that broken ends, hairiness and yarn winding rollers are generated, too small balloon can cause the yarns to be excessively tensioned, and the tensile deformation and the strength are reduced.
In the prior art, a fixed yarn guide ring or a simple mechanical damper is usually adopted to inhibit the balloon, but the devices have the defects that firstly, the yarn guide ring is fixed in position and cannot respond to dynamic changes of yarn tension and balloon diameter in real time, secondly, the real-time monitoring of yarn speed is lacking, once the speed is abnormal, the device can only be stopped passively, the productivity is affected, the operation risk is increased, thirdly, the tension adjusting mechanism is mostly manual or semi-automatic, the adjusting precision is low, the response is lagged, the device is difficult to meet the high-speed unwinding requirement of a modern loom above ten thousand meters per hour, and therefore, an unwinding guiding device capable of monitoring the balloon diameter, the yarn tension and the speed on line in real time and actively and accurately adjusting the position of the yarn guide ring based on closed-loop control is needed to solve the industrial problems of unstable balloon, high breakage rate and high weaving quality fluctuation in the high-speed unwinding process.
Disclosure of Invention
In order to achieve the above purpose, the invention provides a yarn unwinding guide device for a yarn unwinding rack of a high-speed loom, which comprises a guide ring and a yarn unwinding rack, wherein a transverse beam and a vertical beam are respectively and fixedly arranged in the yarn unwinding rack, a positioning mechanism for fixing a yarn unwinding roller is arranged on the surface of the vertical beam, the guide ring is arranged on the upper surface of the transverse beam, a mounting plate is fixedly connected with the upper surface of the transverse beam, a telescopic cylinder for driving the guide ring to move is fixedly connected with the upper surface of the mounting plate, and a control assembly for controlling the telescopic cylinder to stretch is arranged on the surface of the yarn unwinding rack;
The control assembly comprises a detection end and a data processing end, the detection end detects the state of yarns during unwinding and transmits detected data to the data processing end, the detection end comprises a high-speed industrial camera, a micro tension sensor and a laser Doppler velocimeter, the data processing end comprises a programmable logic controller, the upper surface of a transverse beam is fixedly connected with a vertical plate, the high-speed industrial camera and the laser Doppler velocimeter are fixedly arranged on the surface of the vertical plate, the micro tension sensor is fixedly arranged on the upper surface of a mounting plate, an intelligent control cabinet is fixedly arranged on the front surface of a yarn feeding frame, and the programmable logic controller is arranged inside the intelligent control cabinet.
In one example, the positioning mechanism comprises a fixed shaft fixedly mounted on the side surface of the vertical beam, and the central axis of the fixed shaft is in the same straight line with the central axis of the guide ring.
In one example, a T-shaped groove is formed in the surface of the fixed shaft, a T-shaped positioning strip is connected to the inner wall of the T-shaped groove in a sliding mode, and a reset spring is fixedly connected to the opposite surface of the T-shaped positioning strip and the opposite surface of the T-shaped groove.
In one example, the vertical part of the T-shaped positioning strip is trapezoid, and the rubber strip is embedded on the upper surface of the T-shaped positioning strip.
In one example, the upper surface of the mounting plate is provided with an adjusting mechanism, the adjusting mechanism comprises an adjusting seat fixedly arranged on the upper surface of the mounting plate, the upper surface of the adjusting seat is provided with a sliding groove, the inner wall of the sliding groove is slidably provided with a movable seat, and the upper surface of the movable seat is fixedly connected with a tension wheel.
In one example, the number of the tension wheels is three, the three tension wheels are distributed in a V shape, a sleeve is fixedly arranged on one side, far away from the movable seat, of the surface of the adjusting seat, an adjusting rod is slidably arranged on the inner wall of the sleeve, extends to the inside of the sliding groove and is fixedly connected with the surface of the movable seat, and an adjusting spring is fixedly connected with the opposite surface of the adjusting rod and the sleeve.
In one example, the control logic executing internally of the programmable logic controller includes:
the first step, data acquisition and preprocessing step, which is used for synchronously reading the real-time diameter of the balloon, the real-time tension value of the yarn and the real-time speed value of the yarn;
the second step, speed safety priority monitoring, which is used for comparing the real-time speed value with a speed safety threshold value, if the speed value exceeds the threshold value, immediately suspending balloon adjustment and triggering a braking instruction;
thirdly, balloon stability closed-loop control is carried out, and a control signal is generated through a PID control algorithm according to the deviation of the real-time diameter of the balloon and a preset target diameter;
the fourth step, signal output and execution, which is used for converting the control signal into an analog output signal and sending the analog output signal to an electromagnetic proportional valve matched with the telescopic cylinder so as to accurately adjust the position of the guide ring;
And fifthly, tension auxiliary calibration and fault redundancy are used for switching to a control mode mainly for tension maintenance when the tension is abnormal or the high-speed industrial camera fails.
In one example, a touch man-machine interaction interface is embedded on the surface of the intelligent control cabinet, and the touch man-machine interaction interface is in communication connection with the programmable logic controller and is used for displaying balloon images, diameters, tension, speed data, the current position of the air cylinder and PID parameters in real time and providing the operator with setting target parameters and checking alarm information.
The unwinding guide device for the yarn-releasing creel of the high-speed loom provided by the invention has the following beneficial effects:
1. The invention realizes the dynamic stability of the yarn balloon in the high-speed unwinding process through the intelligent closed-loop control system. The system integrates a high-speed industrial camera, a tension sensor and a laser velocimeter, acquires balloon diameter, tension and yarn speed data in real time, and accurately adjusts the distance between guide rings by a programmable logic controller based on a PID algorithm, so that the balloon is always maintained within an ideal diameter range. The yarn shaking and breakage rate are obviously reduced, the weaving efficiency and the cloth cover quality are improved, and meanwhile, the overspeed braking and tension redundancy calibration function is realized, and the reliability and the safety of high-speed operation are ensured.
2. The invention improves the operation convenience and the yarn protection performance by adopting the cooperative design of machinery and materials. The guide ring and the tension wheel are made of ceramic materials with smooth surfaces, so that yarn friction damage is effectively reduced, and the elastic tension wheel set distributed in a V shape is combined, so that yarn travel and tension fluctuation can be adaptively regulated, yarn output stability is further optimized, and maintenance cost is reduced.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the invention. In the drawings:
FIG. 1 is a schematic view showing a first view angle structure of an unwinding guide device of a yarn feeding frame of a high-speed loom;
FIG. 2 is an enlarged schematic view of the unwinding guide of the yarn feeding frame of the high-speed loom shown in FIG. 1;
FIG. 3 is a schematic view showing the internal structure of a sleeve of an unwinding guide of a yarn feeding frame of a high-speed loom;
FIG. 4 is an enlarged view of the unwinding guide of the yarn feeding frame of the high-speed loom shown in FIG. 1;
FIG. 5 is a schematic view showing the internal structure of a fixed shaft of an unwinding guide device of a yarn feeding rack of a high-speed loom;
FIG. 6 is a schematic view showing the structure of a second view angle of the unwinding guide of the yarn feeding frame of the high-speed loom;
FIG. 7 is an enlarged view of the unwinding guide of the yarn feeding frame of the high-speed loom shown in FIG. 6;
FIG. 8 is a flow chart of control logic executed within the programmable logic controller.
The reference numerals are as follows:
the device comprises a guide ring 1, a yarn placing frame 2, a transverse beam 3, a vertical beam 4, a fixed shaft 5, a T-shaped positioning strip 6, a return spring 7, an installation plate 8, a telescopic cylinder 9, an adjusting seat 10, a tension wheel 11, a moving seat 12, a sleeve 13, an adjusting rod 14, an adjusting spring 15, a high-speed industrial camera 16, a miniature tension sensor 17, a laser Doppler velocimeter 18, an intelligent control cabinet 19 and a programmable logic controller 20.
Detailed Description
In order to more clearly illustrate the general inventive concept, a detailed description is given below by way of example with reference to the accompanying drawings.
In the description of the present invention, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed, mechanically connected, electrically connected, or in communication, directly connected, or indirectly connected via an intervening medium, or in communication between two elements or in an interaction relationship between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. In the description of the present specification, the description with reference to the terms "one aspect," "some aspects," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the aspect or example is included in at least one aspect or example of the present invention. In this specification, the schematic representations of the above terms are not necessarily for the same scheme or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more aspects or examples.
As shown in fig. 1 to 8, the invention provides an unwinding guide device for a yarn-releasing frame of a high-speed loom, which comprises a guide ring 1, wherein the guide ring 1 is arranged on a yarn-releasing frame 2, a positioning mechanism for fixing a yarn-releasing roller is arranged on the yarn-releasing frame 2, a transverse beam 3 and a vertical beam 4 are respectively and fixedly arranged on the yarn-releasing frame 2, the transverse beam 3 and the vertical beam 4 are respectively arranged on two sides of the yarn-releasing frame 2, the positioning mechanism is arranged on the vertical beam 4, and the guide ring 1 is arranged on the transverse beam 3 corresponding to the positioning mechanism.
The positioning mechanism comprises a fixed shaft 5 fixedly arranged on a vertical beam 4, a fixing mechanism is arranged in the fixed shaft 5, the diameter of the fixed shaft 5 is smaller than the inner diameter of a yarn placing roller on the market, the yarn placing roller can be stably inserted into the fixed shaft 5, a T-shaped groove is formed in the surface of the fixed shaft 5, a T-shaped positioning strip 6 capable of abutting against the inner wall of the yarn placing roller is arranged in the inner part of the T-shaped groove, a reset spring 7 is fixedly connected with the opposite surface of the T-shaped positioning strip 6 and the opposite surface of the T-shaped groove, the surface of the T-shaped positioning strip 6 can be fixedly abutted against the inner wall of the yarn placing roller through the elastic force of the reset spring 7, the contact surface of the T-shaped positioning strip 6 and the yarn placing roller is increased, the contact surface of the T-shaped positioning strip 6 and the yarn placing roller is an arc surface, the arc surface of the T-shaped positioning strip 6 is embedded with a rubber strip, the elastic force of the T-shaped positioning strip 6 is under the friction force of the T-shaped positioning strip, the T-shaped positioning strip 7 can be ensured to be fixed on the fixed shaft 2, and the T-shaped positioning strip is extruded to the T-shaped positioning strip 6 when the T-shaped positioning strip is extruded to the T-shaped positioning strip 6, and the T-shaped positioning strip 6 is extruded to be completely, and the T-shaped positioning strip 6 can be inserted into the T-shaped positioning strip 6 when the T positioning strip is extruded into the T-shaped positioning strip 6, and the T positioning strip is positioned on the T positioning strip 6.
The axis of guide ring 1 is the same straight line with the axis of fixed axle 5, and then guarantee that the balloon that produces when putting yarn roller and put yarn can be a comparatively even ellipse with the guiding hole department of guide ring 1, make things convenient for subsequent detection, the yarn that will put on the yarn roller passes the guiding hole of guide ring 1, put yarn and just the in-process of backing off, the yarn can produce the balloon under centrifugal force, the balloon is located and puts between yarn roller and the guide ring 1, the production of balloon is unavoidable, but can be through the interval between control guide ring 1 and the yarn roller of putting, the length of yarn when the control balloon forms, and then the size of control balloon, consequently, the upper surface fixed mounting plate 8 at transverse beam 3, the last surface mounting at mounting plate 8 is used for carrying out the flexible cylinder 9 that guide ring 1 removed, the flexible end of flexible cylinder 9 is fixed connection with the side of guide ring 1, in order to guarantee the atress stability when guide ring 1 is promoted, install a flexible cylinder 9 respectively in the side symmetry position of guide ring 1.
And install the adjustment mechanism who is used for carrying out tension adjustment at the upper surface of mounting panel 8, adjustment mechanism includes the regulation seat 10 of fixed mounting at mounting panel 8 upper surface, the upper surface slidable mounting of regulation seat 10 has three tension pulley 11, the wire casing has been seted up on the surface of tension pulley 11, three tension pulley 11 independently remove when the yarn is lax, adjust the interval, increase the length of yarn in tension pulley 11, perhaps reduce the length of yarn in tension pulley 11, thereby realize controlling the effect of tension, in order to realize the autonomous adjustment of tension pulley 11, set up the spout at the upper surface of regulation seat 10, the inner wall slidable mounting of spout removes seat 12, tension pulley 11 is installed at the upper surface of removing seat 12, tension pulley 11 and the material of guide ring 1 are ceramic, and the surface is smooth, smooth surface can avoid the excessive friction of yarn.
The three tension wheels 11 are distributed in a V shape, a sleeve 13 is fixedly arranged on one side, far away from the movable seat 12, of the surface of the adjusting seat 10, an adjusting rod 14 is slidably arranged on the inner wall of the sleeve 13, the adjusting rod 14 extends to the inside of the chute and is fixedly connected with the surface of the movable seat 12, an adjusting spring 15 is fixedly arranged between the adjusting rod 14 and the sleeve 13, yarns are also distributed in a V shape and are tightly attached to the tension wheels 11, the tension wheels 11 are pushed to move in a normal state when unwinding is carried out, the V shape is widened, and when the yarn feeding speed is slowed down, the elasticity of the adjusting spring 15 pushes the tension wheels 11 to move at the moment, the V shape included angle is reduced, the stroke amount is increased, and the yarns are guaranteed to be in a normal state.
In order to realize the automatic adjustment of the guide ring 1, namely, the automatic adjustment of the telescopic cylinder 9 is carried out, the position of the guide ring 1 is adjusted, a control component for controlling the telescopic cylinder 9 is arranged on the yarn discharging frame 2, the control component comprises a high-speed industrial camera 16 fixedly arranged beside a yarn path between the guide ring 1 and a yarn discharging roller, the high-speed industrial camera 16 is used for acquiring images of yarn air rings in real time and calculating the real-time diameter and stability of the air rings through an image processing algorithm, a micro tension sensor 17 is arranged on the yarn path at the outlet side of the guide ring 1, the micro tension sensor 17 is used for monitoring tension change of yarns in real time, a laser Doppler velocimeter 18 is arranged above the yarn path, a laser emitting head of the laser Doppler velocimeter 18 is opposite to the yarns and is used for directly measuring the running speed of the yarns, an intelligent control cabinet 19 is fixedly arranged on the front of the yarn discharging frame 2, and a programmable logic controller 20 is fixedly arranged in the intelligent control cabinet 19, and the high-speed industrial camera 16, the micro tension sensor 17 and the laser Doppler velocimeter 18 are electrically connected with the input ends of the programmable logic controller 20.
The high-speed industrial camera 16 monitors the diameter of the balloon in real time, the micro tension sensor 17 detects yarn tension, the laser Doppler velocimeter 18 acquires yarn speed, the three data are synchronously sent to the programmable logic controller 20, the controller judges whether the speed exceeds the limit or not, if yes, the controller immediately brakes, the balloon diameter deviation is converted into an analog quantity instruction to drive the electromagnetic proportional valve according to a PID algorithm in normal time, the telescopic cylinder 9 is precisely controlled to adjust the distance between the guide ring 1 and the yarn releasing roller, the balloon is always kept at a set diameter, the tension data are simultaneously used as redundancy calibration, the tension mode can be automatically switched when a visual signal is lost, and therefore yarn output with stable diameter, uniform tension and safe speed is continuously obtained in high-speed unwinding, broken ends are obviously reduced, and the weaving efficiency and the cloth cover quality are improved.
The core control logic executed internally by the programmable logic controller 20 is as follows:
First step, data acquisition and preprocessing
The programmable logic controller 20 synchronously reads the balloon real-time diameter value (d_actual) from the high speed industrial camera 16, the real-time tension value (t_actual) from the micro tension sensor 17, and the real-time yarn speed value (v_actual) from the laser doppler velocimeter 18 at a fixed scan period.
Second step, speed safety priority monitoring
The programmable logic controller 20 compares v_actual with an internally stored speed safety threshold (v_max), which is the highest priority control loop, once v_actual > v_max is detected, the programmable logic controller 20 immediately pauses all balloon adjustment commands, and sends a braking command of the highest priority to the auxiliary driving device or brake of the yarn feeding roller for forced deceleration, and at the same time triggers overspeed alarm at the man-machine interaction interface, the process bypasses cylinder control until the speed is recovered to be normal.
Third step, closed loop control of balloon stability
When the speed is within the safe range, the system enters a balloon stability control mode. The programmable logic controller 20 compares the balloon real-time diameter (d_actual) with a preset ideal balloon target diameter (d_target) and calculates a diameter deviation (e=d_actual-d_target).
The deviation signal e is calculated by a built-in digital PID control algorithm, and finally an analog output signal for controlling the telescopic cylinder 9 is generated. The specific control strategy is as follows:
And (3) proportional control, namely outputting a control quantity proportional to the current deviation value e. For example, when the balloon is significantly increased instantaneously, e is a positive value, the proportional control immediately outputs a strong command to rapidly extend the telescopic cylinder 9 to reduce the distance between the guide ring 1 and the yarn feeding roller, thereby rapidly suppressing the balloon from expanding.
Integral control-outputting a control quantity proportional to the integral of the deviation (i.e., the accumulated deviation over a period of time). For eliminating static errors. For example, even if the balloon size has approached the target value, but there is still a slight continuous deviation, the integral control will gradually increase the output, commanding the cylinder to move slowly until the deviation is completely eliminated.
Differential control, which outputs a control amount proportional to the rate of change of the deviation (i.e., the speed at which the deviation changes). Has predictability. For example, when it is detected that the balloon is rapidly enlarged, e is a positive value and the change rate is high, the differential control can output an advanced correction signal before the deviation becomes large, and the cylinder is commanded to extend in advance, so that balloon oscillation is effectively restrained, and system stability is improved.
The output result of the PID algorithm is converted into a corresponding 4-20mA or 0-10V analog signal by the analog output module of the programmable logic controller 20.
Fourth step, signal output and execution
The analog signal is sent to an electromagnetic proportional valve (rather than a simple on-off solenoid valve) associated with the telescopic cylinder 9. The proportional valve can accurately and continuously adjust the flow and direction of the compressed air according to the magnitude of the received current or voltage signal.
When the control algorithm calculates that the diameter of the balloon needs to be reduced, the output signal is increased, and the proportional valve is driven to extend out of the cylinder, so that the distance is reduced.
When the control algorithm calculates that the diameter of the balloon needs to be increased, the output signal is reduced, and the proportional valve is driven to retract the cylinder, so that the distance is increased.
The signal directly determines the speed and the force of the expansion of the air cylinder, so that stable and accurate point position control is realized, the expansion is not abrupt, and the secondary disturbance to the yarn is avoided.
Fifth step, tension auxiliary calibration and fault redundancy
The data (t_actual) of the micro tension sensor 17 is used as an auxiliary calibration for balloon visual control, and the programmable logic controller 20 continuously compares the t_actual with the upper and lower tension limits (t_max, t_min), and if the system detects that the balloon diameter is within the target range but the tension is abnormal and exceeds the standard, or the high-speed industrial camera 16 fails briefly, the control mode mainly for maintaining the tension can be automatically switched to, and the tension value is used for back-pushing and adjusting the cylinder position to serve as an important fault redundancy backup.
The surface of the intelligent control cabinet 19 is embedded with a touch man-machine interaction interface which is in communication connection with the programmable logic controller 20 and is used for displaying balloon images, diameters, tension, speed data, the current position of the cylinder and PID parameters in real time, setting D_target, V_max, PID parameters and the like by an operator and checking alarm information.
The yarn unwinding guide device for the yarn unwinding rack of the high-speed loom provided by the invention realizes active stable control, tension self-adaptive adjustment and safe monitoring of the running speed of the yarn balloon in the high-speed unwinding process through deep fusion of the mechanical structure and the intelligent control system. The method is characterized in that a multi-sensor (a high-speed industrial camera 16, a micro tension sensor 17 and a laser Doppler velocimeter 18) is adopted to collect yarn states in real time, a programmable logic controller 20 is used for realizing closed-loop adjustment of balloon diameters based on a PID algorithm, tension redundancy calibration and overspeed emergency braking functions are assisted, and finally stability and reliability of yarn unwinding are remarkably improved under high-speed and high-frequency operation conditions.
The device not only effectively suppresses the problems of broken ends, winding rolls and the like caused by oversized balloon or shaking, improves the weaving efficiency and the cloth cover quality, but also realizes parameter setup, state visualization and fault reporting through a man-machine interaction interface, and provides key technical support for the efficient and intelligent operation of a modern loom. The systematic design thought and reliable control logic have positive popularization value for automatic upgrading of textile equipment.
In this specification, each embodiment is described in a progressive manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment mainly describes differences from other embodiments. In particular, for system embodiments, since they are substantially similar to method embodiments, the description is relatively simple, as relevant to see a section of the description of method embodiments.
The foregoing is merely exemplary of the present invention and is not intended to limit the present invention. Various modifications and variations of the present invention will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are to be included in the scope of the claims of the present invention.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202511326095.0A CN120817488B (en) | 2025-09-17 | 2025-09-17 | Yarn unwinding guide device for yarn unwinding creel of high-speed loom |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202511326095.0A CN120817488B (en) | 2025-09-17 | 2025-09-17 | Yarn unwinding guide device for yarn unwinding creel of high-speed loom |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN120817488A true CN120817488A (en) | 2025-10-21 |
| CN120817488B CN120817488B (en) | 2026-01-30 |
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| CN202511326095.0A Active CN120817488B (en) | 2025-09-17 | 2025-09-17 | Yarn unwinding guide device for yarn unwinding creel of high-speed loom |
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| CN205973263U (en) * | 2016-08-17 | 2017-02-22 | 苏州和记纺织科技有限公司 | Tube -shape yarn tension ware |
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| CN111268499A (en) * | 2018-12-04 | 2020-06-12 | 刘凌 | Textile yarn pay-off device |
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| CN115367549A (en) * | 2022-08-12 | 2022-11-22 | 浙江理工大学 | A constant residual tension control method for chemical fiber winding based on SSA-SQP |
| CN116555953A (en) * | 2023-05-15 | 2023-08-08 | 浙江理工大学 | A direct twisting machine balloon shape detection device and a cord direct twisting machine control method |
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| CN1369583A (en) * | 2001-01-30 | 2002-09-18 | 苏克-穆勒-哈科巴股份有限公司 | Method and appts. for optimal outgoing speed on bobbin cradle |
| CN1765723A (en) * | 2004-10-26 | 2006-05-03 | 索若两合股份有限公司 | Modified device for withdrawing yarn of automatic cross-winding apparatus |
| WO2007090425A1 (en) * | 2006-02-10 | 2007-08-16 | SSM Schärer Schweiter Mettler AG | Method and device for overhead drawing off of a yarn |
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| CN205973263U (en) * | 2016-08-17 | 2017-02-22 | 苏州和记纺织科技有限公司 | Tube -shape yarn tension ware |
| CN111268499A (en) * | 2018-12-04 | 2020-06-12 | 刘凌 | Textile yarn pay-off device |
| CN114525604A (en) * | 2022-02-10 | 2022-05-24 | 诸暨市孕创互联服饰有限公司 | Doubling and twisting machine with adjustable yarn guide device and control method thereof |
| CN115367549A (en) * | 2022-08-12 | 2022-11-22 | 浙江理工大学 | A constant residual tension control method for chemical fiber winding based on SSA-SQP |
| CN116555953A (en) * | 2023-05-15 | 2023-08-08 | 浙江理工大学 | A direct twisting machine balloon shape detection device and a cord direct twisting machine control method |
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| CN120817488B (en) | 2026-01-30 |
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