CN115652486A - On-line DTY quality monitoring control method and system for elasticizer - Google Patents

Abstract

The invention discloses an on-line DTY quality monitoring control method and a system for a texturing machine, wherein the method adopts a tail-passing detection sensor to detect the tail-passing of POY protofilament, and executes the following steps when the tail-passing is detected each time: a tail passing detection sensor generates a POY protofilament tail passing signal; the communication controller inquires a POY protofilament tail-passing signal and forwards the POY protofilament tail-passing signal to the upper computer; after receiving the POY protofilament tail-passing signal, the software of the upper computer sends a DTY doffing instruction to the communication controller; after receiving the doffing instruction, the communication controller controls the doffing mechanism of the elasticizer to execute doffing action; the doffing actuating mechanism finishes doffing action and sends a doffing finishing response command to the upper computer; and the software of the upper computer receives the response after the doffing execution, records the doffing time and the spindle position and generates a doffing record. The invention can realize automatic control of the tail passing quality of finished yarn of the elasticizer, does not depend on manual intervention, and improves the quality grade of full-roll finished yarn.

Description

On-line DTY quality monitoring control method and system for elasticizer

Technical Field

The invention relates to the field of textile machinery, in particular to an on-line DTY quality monitoring control method and system for an elasticizer.

Background

Texturing machines are one of the important production devices in the textile industry, and in order to increase efficiency, the yarns wound on several yarn rollers are usually connected end to end by knotting to form a coherent yarn. Knotting of the tail of the precursor is an inevitable treatment mode limited by raw materials. However, the knotted tail part will cause the quality of the yarn to be reduced, and the grade should be reduced, that is, the whole yarn on the yarn bobbin is not knotted to be a good product, if knotted, the yarn is a defective product, and the requirement of monitoring the over-tail part is met. For a long time, tail-over monitoring of elasticizers has been at a stage where operator intervention is heavily relied upon. Along with social development, enterprises face the problems of difficulty in recruitment, difficulty in culture of professional technicians, increase in labor cost and the like, and the problems of automatic monitoring of tail passing signals of the elasticizer and automatic doffing of tail passing are in urgent need of breakthrough.

Disclosure of Invention

In view of the above defects of the prior art, the invention provides an on-line DTY quality monitoring control method and system for a draw texturing machine, which automatically detect the passing tail of POY protofilament by using a passing tail detection sensor and automatically control a draw texturing machine doffing mechanism to perform doffing operation when the passing tail.

In order to achieve the aim, the invention provides an online DTY quality monitoring control method of a texturing machine, which adopts a tail-passing detection sensor to detect the tail-passing of POY protofilament in a production cycle, and executes the following steps when the tail-passing is detected each time:

(S1) generating a POY protofilament tail-passing signal by a tail-passing detection sensor;

(S2) the tail passing detection sensor is communicated with the communication controller and the upper computer, and the communication controller actively inquires a POY protofilament tail passing signal of the tail passing detection sensor and forwards the POY protofilament tail passing signal to the upper computer;

(S3) the upper computer receives the data packet sent by the communication controller, and analyzes the POY protofilament tail-passing signal through software;

(S4) software of the upper computer issues a DTY (draw texturing yarn) doffing instruction to the communication controller according to preset system parameters;

(S5) after receiving the doffing instruction, the communication controller controls the doffing mechanism of the elasticizer to execute the doffing action;

(S6) the communication controller detects that the doffing actuating mechanism finishes doffing action and sends a doffing finishing response command to the upper computer;

and (S7) software running on the upper computer receives a response after doffing execution, records doffing time and spindle position and generates a doffing record.

The invention is further improved in that: the tail passing detection sensor corresponds to at least two POY (pre-oriented yarn) raw silk drums, and the silk tail of the front-stage POY raw silk drum is connected with the silk head of the rear-stage POY raw silk drum; POY protofilament passes through the tail detection sensor and is supplied backwards, and the tail detection sensor continuously detects the filament coming direction of the POY protofilament so as to judge the POY protofilament cylinder supplying the POY protofilament; when the POY protofilament coming direction is detected to be changed from one POY protofilament cylinder to another POY protofilament cylinder, the over-tail detection sensor generates a over-tail signal of the POY protofilament.

The invention is further improved in that: each tail passing detection sensor corresponds to two POY (pre-oriented yarn) raw silk drums, and the two POY raw silk drums are respectively positioned in the left front and the right front of the tail passing detection sensor.

The invention is further improved in that: the tail-passing detection sensor in the step S2 establishes communication with a communication controller and an upper computer, and the adopted signal transmission mode comprises a cable, an optical fiber, a wireless network and Bluetooth; the adopted transmission bus comprises serial connection, parallel connection, bus connection and Ethernet connection; the adopted communication protocols comprise level signals, RS232, RS485, CAN, profibus and EtherCAT protocols.

The invention is further improved in that: the communication controller inquires whether the POY protofilament tail-passing signal is generated by the tail-passing detection sensor in a timed polling mode.

The invention is further improved in that: after receiving the doffing instruction, the communication controller controls the doffing mechanism of the elasticizer to judge whether the current finished product bobbin yarn comprises a protofilament joint or not when the doffing mechanism executes the doffing action; if the finished product of the reeled yarn comprises a protofilament joint, controlling the elasticizer to discard the finished product of the reeled yarn; and a new finished package of cone yarn is placed.

The invention is further improved in that: the elasticizer executes the doffing action through a doffing mechanism of the elasticizer; the communication controller inquires whether the doffing action is finished or not in a timed polling mode; and if the doffing mechanism of the elasticizer completes the doffing action, responding to the communication controller to complete the doffing action, otherwise, replying to the doffing mechanism of the elasticizer to not complete the doffing action.

The invention also discloses a draw texturing machine doffing control system which is used for executing the draw texturing machine online DTY quality monitoring control method and comprises the following steps:

the POY tail passing detection sensors are used for detecting the tail passing of the POY precursor and generating a POY precursor tail passing signal when the POY precursor passes the tail;

the communication controller is in communication connection with the tail passing detection sensors and is in communication connection with a doffing mechanism of the elasticizer;

and the upper computer is in communication connection with the communication controller.

The method provided by the invention has the following technical effects: the system has high-sensitivity tailgating signal detection capability, high-speed online analysis capability and real-time doffing control capability, real-time monitoring of the spindle position state of the precursor is carried out through software running on the upper computer, when the tailgating state of the spindle position is captured, doffing of corresponding finished yarn is automatically controlled, small bobbin yarn containing tailgating connectors is discarded, and a new full-package finished yarn without connectors is regenerated; by analogy, the method can continuously and automatically monitor the tail passing of the protofilament in the production process, and simultaneously automatically discard the tail-passing small rolls by controlling the doffing actuating mechanism of the elasticizer through the upper computer system to generate new finished yarn without joints and full rolls; the invention realizes the automatic control of the tail passing quality of finished yarn of the elasticizer, does not depend on manual intervention, and improves the quality grade of full-roll finished yarn.

The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings to fully understand the objects, the features and the effects of the present invention.

Drawings

FIG. 1 is a flow chart of an on-line DTY quality monitoring control method of a draw texturing machine of the present invention;

FIG. 2 is a schematic view of the doffing control principle of the doffing control system of the elasticizer of the present invention;

fig. 3 is a system architecture diagram of the feeder doffer control system of the present invention.

Detailed Description

The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.

It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the drawings only show the components related to the present invention rather than the number, shape and size of the components in actual implementation, and the type, quantity and proportion of the components in actual implementation may be changed freely, and the layout of the components may be more complicated.

Some exemplary embodiments of the invention have been described for illustrative purposes, and it is to be understood that the invention may be practiced otherwise than as specifically described.

As shown in fig. 1 and 2, an embodiment of the present invention provides an on-line DTY quality monitoring control method for a draw texturing machine, in a production cycle of the draw texturing machine, a tail-passing detection sensor is used to detect a tail-passing of a POY strand, and the following steps are performed each time a tail-passing is detected:

(S1) generating a POY protofilament tail-passing signal by a tail-passing detection sensor.

In this embodiment, the tail-passing detection sensor corresponds to two POY raw silk cylinders, and the silk tail of the front-stage POY raw silk cylinder is connected with the silk head of the rear-stage POY raw silk cylinder; the POY precursor is fed back through the tail detection sensor. The tail-passing detection sensor continuously detects the filament coming direction of the POY protofilament to judge the POY protofilament barrel supplying the POY protofilament; when the coming direction of the POY protofilament is detected to be changed from one POY protofilament barrel to another POY protofilament barrel, the POY protofilament barrel for supplying the POY protofilament is changed, and the protofilament joint of the POY protofilament passes through the tail passing detection sensor, so that the tail passing detection sensor generates a POY protofilament tail passing signal. The POY protofilament tail-crossing signal comprises a level signal and a data coding signal.

In this embodiment, each over-tail detection sensor corresponds to two POY filament barrels, and the two POY filament barrels are respectively located in front of the left and right of the over-tail detection sensor.

And (S2) the tail passing detection sensor establishes communication with the communication controller and the upper computer, and the communication controller actively inquires a POY protofilament tail passing signal of the tail passing detection sensor and forwards the POY protofilament tail passing signal to the upper computer.

In the embodiment, the tail-passing detection sensor is communicated with the communication controller and the upper computer, and the adopted signal transmission mode comprises a cable, an optical fiber, a wireless network and Bluetooth; the adopted transmission bus comprises serial connection, parallel connection, bus connection and Ethernet connection; the adopted communication protocols comprise level signals, RS232, RS485, CAN, profibus and EtherCAT protocols.

In this embodiment, the communication controller queries whether the tail-passing detection sensor generates a tail-passing signal of the POY precursor in a timed polling manner. In one embodiment, the communication controller aggregates tail passing information of all tail passing detection sensors connected to the communication controller and transmits the aggregated tail passing information to the upper computer through network communication.

And (S3) the upper computer receives the data packet sent by the communication controller and analyzes the POY protofilament tail-passing signal through software.

In the process, the communication controller is connected with the computer, tail-passing signals are transmitted to software running on the upper computer, the upper computer processes the tail-passing signals and generates a doffing control command according to preset system parameters to send the doffing control command to the controller, the controller immediately generates a control signal to control the doffing executing mechanism to complete doffing, and the doffing executing result is fed back to the software running on the upper computer.

Software running on an upper computer receives a data packet, analyzes the tail signal, detects a data frame of a communication link in real time by using a multithreading technology, analyzes the data frame according to a frame format agreed with a sensor, and acquires a tail mark from a specific data frame position, wherein the multithreading technology is adopted in the data packet receiving and analyzing method.

The software piece preset system parameter types running on the upper computer comprise sensor address parameters, device performance parameters, system logic algorithm setting and system configuration parameters, wherein the sensor address parameters comprise sensor addressing setting, machine and spindle position logic numbering, the device performance parameters comprise sensor starting self-checking setting, sensor sensitivity setting and doffing switch setting, and the system configuration parameters comprise communication board card setting, POY precursor period, starting self-starting, system registration hot key and upgrading channel setting.

And (S4) software of the upper computer issues a DTY (draw texturing yarn) doffing instruction to the communication controller according to preset system parameters.

And (S5) after receiving the doffing instruction, the communication controller controls the doffing mechanism of the elasticizer to execute the doffing action.

After receiving the doffing instruction, the communication controller controls the doffing mechanism of the elasticizer to judge whether the current finished product bobbin yarn comprises a protofilament joint or not when the doffing mechanism executes the doffing action; if the finished product of the reeled yarn comprises a protofilament joint, controlling the elasticizer to discard the finished product of the reeled yarn; and a new finished package of cone yarn is placed. By discarding the finished package with the precursor splices, it is ensured that none of the remaining finished packages includes yarn splices, ensuring the quality rating of all remaining finished packages.

The draw texturing machine executes a doffing action through a draw texturing machine doffing mechanism (DTY spindle position doffing actuator); the communication controller inquires whether the doffing action is finished or not in a timed polling mode; if the doffing mechanism of the elasticizer completes the doffing action, the controller responds to the communication controller to complete the doffing action, otherwise, the doffing mechanism of the elasticizer returns to the state that the doffing action is not completed.

And (S6) the communication controller detects that the doffing actuating mechanism completes the doffing action and sends a doffing completion response command to the upper computer.

And (S7) software running on the upper computer receives the response after doffing execution, records doffing time and spindle position, and generates doffing records. In the process, after a software part running on an upper computer receives a doffing response data packet, a data processing thread automatically analyzes the data packet, generates a doffing completion spindle position and time record and stores the doffing completion spindle position and time record into a database, reads DTY finished product cheese production data of an elasticizer control system and generates a complete DTY doffing detail table.

In the production process, the steps 1 to 7 are repeated, during continuous production, in each production period, the system circularly detects until all POY spindle positions finish the tail passing, all DTY spindle positions finish the doffing, small rolls containing the tail passing are automatically discarded through preset system parameters and a tail passing detection algorithm, flawless DTY full-roll bobbin yarns are produced, the tail passing quality is automatically controlled, and the quality grade of full-roll finished product bobbin yarns is improved.

As shown in fig. 3, an embodiment of the present invention further provides a draw texturing machine doffing control system, configured to execute the draw texturing machine online DTY quality monitoring control method, including:

the POY tail passing detection sensors are used for detecting the tail passing of the POY precursor and generating a POY precursor tail passing signal when the POY precursor passes the tail;

and the communication controller is in communication connection with the tail passing detection sensors and is in communication connection with a doffing mechanism of the elasticizer.

And the upper computer is in communication connection with each communication controller.

The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims (8)

1. An on-line DTY quality monitoring control method of a draw texturing machine is characterized in that: in the production cycle, a tail passing detection sensor is adopted to detect the tail passing of the POY protofilament, and the following steps are executed each time the tail passing detection sensor detects the tail passing:

(S1) generating a POY protofilament tail-passing signal by a tail-passing detection sensor;

(S2) the tail passing detection sensor is communicated with the communication controller and the upper computer, and the communication controller actively inquires a POY protofilament tail passing signal of the tail passing detection sensor and forwards the POY protofilament tail passing signal to the upper computer;

(S3) the upper computer receives the data packet sent by the communication controller, and analyzes the POY protofilament tail-passing signal through software;

(S4) software of the upper computer issues a DTY (draw texturing yarn) doffing instruction to the communication controller according to preset system parameters;

(S5) after receiving the doffing instruction, the communication controller controls the doffing mechanism of the elasticizer to execute a doffing action;

(S6) the communication controller detects that the doffing actuating mechanism completes doffing action and sends a doffing completion response command to the upper computer;

and (S7) software running on the upper computer receives a response after doffing execution, records doffing time and spindle position and generates a doffing record.

2. The on-line DTY quality monitoring control method of the elasticizer according to claim 1, characterized in that: the tail passing detection sensor corresponds to at least two POY (pre-oriented yarn) raw silk drums, and the silk tail of the front-stage POY raw silk drum is connected with the silk head of the rear-stage POY raw silk drum; the POY protofilament passes through the tail-passing detection sensor and is fed backwards, and the tail-passing detection sensor continuously detects the filament coming direction of the POY protofilament so as to judge the POY protofilament cylinder which supplies the POY protofilament; when the POY protofilament coming direction is detected to be changed from one POY protofilament cylinder to another POY protofilament cylinder, the over-tail detection sensor generates a over-tail signal of the POY protofilament.

3. The on-line DTY quality monitoring control method of the elasticizer according to claim 2, characterized in that: each tail passing detection sensor corresponds to two POY (pre-oriented yarn) raw silk drums, and the two POY raw silk drums are respectively positioned in the left front and the right front of the tail passing detection sensor.

4. The on-line DTY quality monitoring control method of the elasticizer according to claim 1, characterized in that: the tail-passing detection sensor in the step S2 establishes communication with a communication controller and an upper computer, and the adopted signal transmission mode comprises a cable, an optical fiber, a wireless network and Bluetooth; the adopted transmission bus comprises serial connection, parallel connection, bus connection and Ethernet connection; the adopted communication protocols comprise level signals, RS232, RS485, CAN, profibus and EtherCAT protocols.

5. The on-line DTY quality monitoring control method of the elasticizer according to claim 1, characterized in that: the communication controller inquires whether the POY protofilament tail-passing signal is generated by the tail-passing detection sensor in a timed polling mode.

6. The on-line DTY quality monitoring control method of the elasticizer according to claim 1, characterized in that: after receiving the doffing instruction, the communication controller controls the doffing mechanism of the elasticizer to judge whether the current finished product bobbin yarn comprises a protofilament joint or not when the doffing mechanism executes the doffing action; if the finished product of the reeled yarn comprises a protofilament joint, controlling the elasticizer to discard the finished product of the reeled yarn; and a new finished package of cone yarn is placed.

7. The on-line DTY quality monitoring control method of the elasticizer according to claim 1, characterized in that: the elasticizer executes the doffing action through a doffing mechanism of the elasticizer; the communication controller inquires whether the doffing action is finished or not in a timed polling mode; and if the doffing mechanism of the elasticizer completes the doffing action, responding to the communication controller to complete the doffing action, otherwise, the doffing mechanism of the elasticizer returns to not complete the doffing action.

8. A feeder doffing control system for performing the feeder online DTY quality monitoring control method of any one of claims 1 to 7, characterized by comprising:

the multiple tail passing detection sensors are used for detecting the tail passing of the POY protofilament and generating a POY protofilament tail passing signal when the tail passes;

the communication controller is in communication connection with the tail passing detection sensors and is in communication connection with a doffing mechanism of the elasticizer;

and the upper computer is in communication connection with the communication controller.

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