CN-121990421-A - Electrical control system and electrical control method of full-automatic spandex winding machine

CN121990421ACN 121990421 ACN121990421 ACN 121990421ACN-121990421-A

Abstract

The invention relates to the technical field of spandex spinning equipment, and discloses an electric control system and an electric control method of a full-automatic spandex winding machine, wherein the electric control system comprises an upper computer system, a programmable controller, a variable frequency control unit, a control valve unit, a motor unit and a cylinder unit; the upper computer system is used for setting and transmitting process parameters, and the signal input end of the programmable controller is electrically connected with the signal output end of the upper computer system and is used for receiving the process parameters and executing control logic. According to the invention, the output frequency of the oiling roller frequency converter is regulated in real time by the programmable controller according to the preset process model, so that the rotating speed of the oiling roller breaks through the traditional constant mode, the dynamic change linked with the spinning process is realized, the differentiated oiling amount of the spandex filament can be actively and accurately controlled in the same winding period, and a key process means is provided for developing differentiated products with special handfeel, cohesion or post-processing performance.

Inventors

LU MINGLI
XU BO
CAO YIN
CUI CHENG

Assignees

江苏天明机械集团有限公司

Dates

Publication Date: 20260508
Application Date: 20251231

Claims (9)

1. An electric control system of a full-automatic spandex winding machine is characterized by comprising an upper computer system (1), a programmable controller (2), a variable frequency control unit (3), a control valve unit (4), a motor unit (03) and a cylinder unit (04), wherein the upper computer system (1) is used for setting and sending process parameters, a signal input end of the programmable controller (2) is electrically connected with a signal output end of the upper computer system (1) and is used for receiving the process parameters and executing control logic, a signal input end of the variable frequency control unit (3) is electrically connected with a signal output end of the programmable controller (2), the variable frequency control unit (3) at least comprises an upper oil roller frequency converter (35), a friction roller frequency converter (30) and a winding shaft frequency converter, a signal input end of the motor unit (03) is electrically connected with a signal output end of the variable frequency control unit (3), the motor unit (03) at least comprises an upper oil roller motor (035) connected with the upper oil roller frequency converter (35), the friction roller frequency converter (30) and the cylinder frequency converter (4) connected with the air cylinder unit (41) at least, the valve unit (4) is connected with the air cylinder unit (4), the cylinder unit (04) comprises at least a roller pressure cylinder (041) connected to the electrical proportional valve (41).
2. The electric control system of the full-automatic spandex winding machine according to claim 1, wherein the frequency conversion control unit (3) comprises a friction roller frequency converter (30), a grooved roller frequency converter (31), a No. 1 winding shaft frequency converter (32), a No. 2 winding shaft frequency converter (33), a turntable frequency converter (34) and an oiling roller frequency converter (35), and signal input ends of the friction roller frequency converter (30), the grooved roller frequency converter (31), the No. 1 winding shaft frequency converter (32), the No. 2 winding shaft frequency converter (33), the turntable frequency converter (34) and the oiling roller frequency converter (35) are electrically connected with a signal output end of the programmable controller (2); The motor unit (03) comprises a friction roller motor (030), a groove roller motor (031), a 1# winding shaft motor (032), a 2# winding shaft motor (033), a rotary table motor (034) and an oiling roller motor (035), wherein a signal output end of a friction roller frequency converter (30) is electrically connected with the friction roller motor (030), a signal output end of a groove roller frequency converter (31) is electrically connected with the groove roller motor (031), a signal output end of a 1# winding shaft frequency converter (32) is electrically connected with the 1# winding shaft motor (032), a signal output end of a 2# winding shaft frequency converter (33) is electrically connected with the 2# winding shaft motor (033), a signal output end of a rotary table frequency converter (34) is electrically connected with the rotary table motor (034), and a signal output end of an oiling roller frequency converter (35) is electrically connected with the oiling roller motor (035). The control valve unit (4) comprises an electric proportional valve (41), a shredding electromagnetic valve (42) and a cylinder falling electromagnetic valve (43), and signal input ends of the electric proportional valve (41), the shredding electromagnetic valve (42) and the cylinder falling electromagnetic valve (43) are electrically connected with a signal output end of the programmable controller (2); The cylinder unit (04) comprises a roller pressure cylinder (041), a shredding cylinder (042) and a doffing cylinder (043), wherein the output end of the electric proportional valve (41) is in air connection with the input end of the roller pressure cylinder (041), the output end of the shredding electromagnetic valve (42) is in air connection with the input end of the shredding cylinder (042), and the output end of the doffing electromagnetic valve (43) is in air connection with the input end of the doffing cylinder (043).
3. The electrical control method for the electrical control system of the fully-automatic spandex winding machine is characterized in that the programmable controller (2) receives target oiling rate parameters and winding process parameters set by the upper computer system (1), acquires system parameters reflecting spinning progress, generates and outputs a first frequency control signal for adjusting the oiling rate to the oiling roller frequency converter (35) based on the target oiling rate parameters and the system parameters, synchronously generates and outputs a cooperative control signal group for coordinately adjusting winding linear speed and winding pressure based on the winding process parameters and the system parameters, wherein the cooperative control signal group at least comprises a second frequency control signal and a pressure control signal; The oiling roller frequency converter (35) drives the oiling roller motor (035) to operate in a variable speed mode in response to the first frequency control signal so as to realize dynamic adjustment of oiling rate, the friction roller frequency converter (30) and the winding shaft frequency converter respectively drive the friction roller motor (030) and the winding shaft motor to operate in a cooperative variable speed mode in response to the second frequency control signal, and meanwhile the electric proportional valve (41) responds to the pressure control signal to adjust the pressure of the roller pressure cylinder (041) so as to jointly realize matching adjustment of the winding linear speed and the winding pressure which increase along with the diameter of a spinning cake.
4. The electrical control method for the full-automatic spandex winder according to claim 3, wherein the system parameters comprise real-time spinning time t, a first frequency control signal is generated based on the target oiling rate parameter and the system parameters, and a target oiling roller rotating speed at the current moment is determined according to a preset corresponding relation function or a lookup table of the target oiling rate parameter and the real-time spinning time t; The system parameters comprise a real-time cake diameter D, a cooperative control signal group is generated based on the winding process parameters and the system parameters, and a mathematical model of the real-time cake diameter D is generated according to a preset winding linear speed V And calculating and generating the second frequency control signals for driving the friction roller motor (030) and the winding shaft motor according to the target line speed, the real-time spinning cake diameter D and the mechanical transmission relation.
5. The method for electrically controlling a fully automatic spandex winder according to claim 3, wherein the real-time cake diameter D is determined according to a preset relationship between the winding pressure P and the cake diameter D Or the corresponding relation with the target line speed V, determining the currently required target winding pressure, and generating the pressure control signal according to the target winding pressure.
6. An electrical control method for a fully automatic spandex winder as set forth in claim 3, wherein a real-time tension value during winding is obtained by a tension sensor, the real-time tension value is compared with a preset target tension range, and when the real-time tension value deviates from the target tension range, the second frequency control signal is modified to form a winding linear speed closed-loop control based on tension feedback.
7. An electrical control method for a fully automatic spandex winder as claimed in claim 3, wherein a part of the second frequency control signal for controlling the winding shaft motor is made to follow a preset synchronous change logic with the first frequency control signal, so that the change of the rotational speed of the oiling roller is correlated with the change of the rotational speed of the winding shaft.
8. An electrical control method for a fully automatic spandex winder according to claim 3, wherein the winding shaft frequency converter comprises a 1# winding shaft frequency converter (32) for driving a first station and a 2# winding shaft frequency converter (33) for driving a second station, and wherein the part of the cooperative control signal group corresponding to the winding shaft frequency converter is configured to control the 1# winding shaft frequency converter (32) and the 2# winding shaft frequency converter (33) to execute start-stop and speed synchronization actions linked with the turntable frequency converter (34) when the stations are switched.
9. The method for electrically controlling a fully automatic spandex winder according to claim 3, wherein the step of obtaining the system parameters reflecting the spinning process comprises obtaining the real-time spinning time t by a timer provided on the winder or obtaining the real-time cake diameter D by a diameter sensor or a calculation model based on the number of turns of the winding motor.

Description

Electrical control system and electrical control method of full-automatic spandex winding machine Technical Field The invention relates to the technical field of spandex spinning equipment, in particular to an electric control system and an electric control method of a full-automatic spandex winding machine. Background In the production process of spandex yarn, spandex winding is a key process after spinning forming, the performance of an electric control system directly determines the winding quality, production efficiency and product differentiation capability of yarn cakes, the Chinese spandex yarn market enters a strong competition stage, various spandex companies in China are searching for ways of product differentiation production, and the oiling rate is one of ways of product differentiation as a key index of spandex yarn quality. The traditional electrical control system of the spandex winder has the main defects that firstly, an oiling roller for oiling yarn generally runs at a constant rotating speed, the oiling amount cannot be dynamically adjusted according to the spinning process stage or the product specification requirement, the capability of realizing product differentiation by precisely controlling the oiling rate is limited, secondly, the spinning linear speed in the winding process is generally kept constant, and as the diameter of a yarn cake is continuously increased, excessive compression, shrinkage and even sliding of yarn in the inner layer of the yarn cake can be caused due to the fact that the yarn in the inner layer of the yarn cake bears excessive pressure for a long time, obvious tension difference and internal stress exist between the yarn and surface yarn, and the forming uniformity, unwinding performance and subsequent processing quality of the yarn cake are seriously affected. Therefore, an intelligent control system capable of realizing dynamic adjustment of oil application rate and automatically optimizing winding parameters along with the diameter of a spinning cake is urgently needed. Disclosure of Invention Aiming at the defects of the prior full-automatic electric control system of the spandex winding machine in the use process, the invention provides the full-automatic electric control system of the spandex winding machine and an electric control method thereof, which have the advantages of accurate dynamic control of oil application rate and automatic matching adjustment of winding linear speed, and solve the technical problems in the prior art. The invention provides a technical scheme that an electric control system of a full-automatic spandex winding machine comprises an upper computer system, a programmable controller, a variable frequency control unit, a control valve unit, a motor unit and an air cylinder unit, wherein the upper computer system is used for setting and sending process parameters, a signal input end of the programmable controller is electrically connected with a signal output end of the upper computer system and is used for receiving the process parameters and executing control logic, the signal input end of the variable frequency control unit is electrically connected with the signal output end of the programmable controller, the variable frequency control unit at least comprises an oil applying roller frequency converter, a friction roller frequency converter and a winding shaft frequency converter, the signal input end of the motor unit is electrically connected with the signal output end of the variable frequency control unit, the motor unit at least comprises an oil applying roller motor connected with the oil applying roller frequency converter, a friction roller motor connected with the friction roller frequency converter and a winding shaft motor connected with the winding shaft frequency converter, the control valve unit at least comprises an electric proportional valve, and the input end of the air cylinder unit is connected with the control valve at least comprises an air cylinder valve. Preferably, the frequency conversion control unit comprises a friction roller frequency converter, a grooved roller frequency converter, a 1# winding shaft frequency converter, a 2# winding shaft frequency converter, a turntable frequency converter and an oiling roller frequency converter, wherein signal input ends of the friction roller frequency converter, the grooved roller frequency converter, the 1# winding shaft frequency converter, the 2# winding shaft frequency converter, the turntable frequency converter and the oiling roller frequency converter are electrically connected with the signal output end of the programmable controller; The motor unit comprises a friction roller motor, a grooved roller motor, a 1# winding shaft motor, a 2# winding shaft motor, a turntable motor and an oiling roller motor, wherein the signal output end of the friction roller frequency converter is electrically connected with the friction roller motor, the signal outpu