CN104775202A - Electronic yarn guide method applied to two-for-one twister and device thereof - Google Patents

Electronic yarn guide method applied to two-for-one twister and device thereof Download PDF

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Publication number
CN104775202A
CN104775202A CN201510030420.9A CN201510030420A CN104775202A CN 104775202 A CN104775202 A CN 104775202A CN 201510030420 A CN201510030420 A CN 201510030420A CN 104775202 A CN104775202 A CN 104775202A
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China
Prior art keywords
speed
yarn
yarn guiding
guide
winding
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CN201510030420.9A
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CN104775202B (en
Inventor
盛亮均
戴小平
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Zhejiang Rifa Textile Machinery Co Ltd
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Zhejiang Rifa Textile Machinery Co Ltd
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    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01HSPINNING OR TWISTING
    • D01H13/00Other common constructional features, details or accessories
    • D01H13/04Guides for slivers, rovings, or yarns; Smoothing dies
    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01HSPINNING OR TWISTING
    • D01H13/00Other common constructional features, details or accessories
    • D01H13/32Counting, measuring, recording or registering devices

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)

Abstract

The invention discloses an electronic yarn guide method applied to a two-for-one twister and a device thereof, and belongs to the technical field of textile machinery. According to the method, data measured by a winding speed sensor, a spindle speed sensor and a yarn guide speed sensor is fed back to a control system; a PLC (Programmable Logical Controller) program of the control system is used for performing data comparison through a speed comparing module; and the speed and acceleration of a servo motor are adjusted through the yarn guide speed control module. The device for implementing the method comprises a yarn guide mechanism, a control system, a winding speed sensor, a spindle speed sensor and three yarn guide speed sensors, wherein the winding speed sensor is used for detecting the winding speed; the spindle speed sensor is used for detecting the spindle rotation speed; the three yarn guide speed sensors are arranged on one side of a yarn guide rod in sequence at certain distances and correspond to the sensors. By adopting the electronic yarn guide method and the device thereof, the problems of complex structure, difficulty in maintenance, low production efficiency and easiness in causing overlapping during yarn winding in a yarn guide device of the conventional two-for-one twister are solved.

Description

A kind of electronics guide method for two-for-one twister and device thereof
Technical field
The invention belongs to technical field of textile machine, especially relevant with a kind of electronics guide method for two-for-one twister and device thereof.
Background technology
Existing two-for-one twister adopts traditional feed carrier to realize the techniques such as double twisting, winding, the shaping of yarn cylinder usually, traditional feed carrier is generally mechanical gear case apparatus, complicated in mechanical structure, gear easily damages, maintenance trouble, and yarn guiding speed and draw yarn constant airspeed and cannot adjust with process reform, reel for yarn around time easily to overlap phenomenon, affect yarn Forming Quality, make to draw yarn speed comparatively slowly, production efficiency is low.
Summary of the invention
It is lower that object of the present invention is intended to overcome the feed carrier complex structure of existing two-for-one twister, maintenance trouble and production efficiency, reel for yarn around time easily to overlap the defect of phenomenon, provide the anti-yarn roll overlap of a kind of energy and the electronics guide method for two-for-one twister of enhancing productivity and the electronic yarn guide device realizing the method.
For this reason, the present invention is by the following technical solutions: a kind of electronics guide method for two-for-one twister, it is characterized in that, driven by servomotor Timing Belt loop Direct driver lever jack is used to move back and forth, each round traverse of setting lever jack is as a minor cycle, within the same minor cycle, the yarn guiding speed of lever jack is constant, five continuous print minor cycles form a large period, in a large period, yarn guiding speed divides corresponding Pyatyi to carry out circulation change by control system control corresponding five minor cycles, the median of setting Pyatyi is standard yarn guiding speed, the maximum of described Pyatyi and the minimum of a value amplitude of variation respectively and between median is no more than 10% of standard yarn guiding speed, namely angle is changed accordingly, serve the effect of yarn picture disruption, standard yarn guiding speed changes on year-on-year basis with drawing yarn speed, draw yarn speed to set according to yarn double twisting processing technology, spindle speed sensor and winding speed sensor is used to detect spindle rotating speed and winding rotary speed respectively, keep at a certain distance away in traverse control place of lever jack and successively three sensors are installed, three sensors coordinate the yarn guiding speed responded to and detect reality with the inductive head on lever jack, the spindle rotating speed of the reality detected, winding rotary speed and yarn guiding speed data feedback are to control system, the PLC program of control system is by the spindle rotating speed of reality, winding rotary speed and yarn guiding speed and setting draw yarn speed and standard yarn guiding speed compares, and by its yarn guiding speed control module, servomotor is made to the adjustment of speed and acceleration, realize adjusting the control of yarn guiding speed.
As to technique scheme supplement and perfect, the present invention also comprises technical characteristic.
The amplitude of variation of the yarn guiding speed in described each minor cycle and the yarn guiding speed of previous stage is 5%.
A kind of electronic yarn guide device realizing above-mentioned guide method, comprise Yarn guide mechanism and control system, Yarn guide mechanism comprises lever jack, lever jack traversing driving mechanism and guide transmission mechanism, it is characterized in that, described electronic yarn guide device also comprises winding speed sensor, spindle velocity sensor and three yarn guiding speed sensors, described winding speed sensor setting is in the winding drive side of two-for-one twister winder unit, for detecting winding rotary speed, described spindle velocity sensor is arranged at the side of the tengential belt drive of double-twisting machine spindle unit, for detecting spindle rotating speed, described guide traversing driving mechanism is servomotor, described guide transmission mechanism comprises guide drive, guide synchronous pulley and regulating wheel, guide drive is in transmission connection by the output shaft of driving belt and described servomotor, guide drive is coaxially connected with described guide synchronous pulley by a power transmission shaft, described guide Timing Belt is set on described regulating wheel and guide synchronous pulley, partial fixing in horizontally set on guide Timing Belt is connected with a contiguous block, described lever jack one end is fixedly connected with described contiguous block, a place near contiguous block on lever jack is provided with an inductive head, three described yarn guiding speed sensors are set in turn in the side of described lever jack and corresponding with described inductive head along lever jack axially spaced-apart certain distance, described control system all with winding speed sensor, spindle velocity sensor and three yarn guiding speed sensors, the PLC program of described control system comprises velocity ratio comparatively module and yarn guiding speed module, speed comparison module comprises the spindle rotating speed to reality, winding rotary speed and yarn guiding speed and setting draw the module that yarn speed and standard yarn guiding speed compare, yarn guiding speed module comprises the control module of adjustment servomotor being made to speed and acceleration.
The present invention can reach following beneficial effect: the data feedback of the actual winding rotary speed detected by inductor, spindle rotating speed and yarn guiding speed is to control system, the PLC program of control system is by analyses and comparison data and adjust servomotor speed and acceleration, realize adjusting the control of yarn guiding speed, ensure that the stability of angle, thus improve two-for-one twister draw yarn speed, improve the production efficiency of two-for-one twister, realize arranging the dislocation of yarn and reach anti-stacked effect, make yarn forming, two-for-one twister is easy to maintenance, reduces maintenance cost.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.
As follows according to existing known angle computing formula:
tg(β/2)=L/(π*D)=(1000*V*t)/(π*D)=1000*V*[(π*D)/(1000*V 1)]/(π*D)=V/V 1
In formula: L---yarn volume winding one week thread-carrier stroke (mm)
D---yarn coil diameter (mm)
V---yarn guiding speed (m/min)
T---yarn cylinder reels one week required time (min)
V 1---draw yarn speed (m/min)
Can analyze from formula and draw, anti-yarn overlying is actual is exactly the angle changing every layer of yarn, it is generally acknowledged to occur overlap again more than 10 layers.
Can to know as above-mentioned and as shown in Figure 1, lever jack 12 of the present invention drives Timing Belt 2 loop Direct driver to move back and forth by servomotor 1, each round traverse of setting lever jack 12 is as a minor cycle, within the same minor cycle, the yarn guiding speed of lever jack 12 is constant, five continuous print minor cycles form a large period, in a large period, yarn guiding speed divides corresponding Pyatyi to carry out circulation change by control system control corresponding five minor cycles, the median of setting Pyatyi is standard yarn guiding speed, the amplitude of variation of the yarn guiding speed in described each minor cycle and the yarn guiding speed of previous stage is 5%, namely angle is changed accordingly, serve the effect of yarn picture disruption, standard yarn guiding speed changes on year-on-year basis with drawing yarn speed, draw yarn speed to set according to yarn double twisting processing technology, spindle velocity sensor 23 and winding speed sensor 16 is used to detect spindle rotating speed and winding rotary speed respectively, keep at a certain distance away in traverse control place of lever jack 12 and successively three yarn guiding speed sensors 8 are installed, three yarn guiding speed sensors 8 coordinate the yarn guiding speed responded to and detect reality with the inductive head 15 on lever jack 12, the spindle rotating speed of the reality detected, winding rotary speed and yarn guiding speed data feedback are to control system, the PLC program of control system is by the spindle rotating speed of reality, winding rotary speed and yarn guiding speed and setting draw yarn speed and standard yarn guiding speed compares, and by its yarn guiding speed control module, servomotor is made to the adjustment of speed and acceleration, realize adjusting the control of yarn guiding speed.
As shown in Figure 1, the device realizing said method comprises Yarn guide mechanism, control system, winding speed sensor 16, spindle velocity sensor 23 and three yarn guiding speed sensors 8, Yarn guide mechanism comprises lever jack 12, lever jack traversing driving mechanism and guide transmission mechanism, guide traversing driving mechanism is servomotor 1, guide transmission mechanism comprises guide drive 3, guide Timing Belt 4, guide synchronous pulley 5 and regulating wheel 7, guide drive 3 is in transmission connection by the output shaft of driving belt 2 with described servomotor 1, guide drive 3 is coaxially connected with described guide synchronous pulley 5 by a power transmission shaft, described regulating wheel 7 keeps at a certain distance away horizontally set, described guide Timing Belt 4 is set on described regulating wheel 7 and guide synchronous pulley 5, partial fixing in horizontally set on guide Timing Belt 4 is connected with a contiguous block 6, described lever jack 12 one end is fixedly connected with described contiguous block 6, a place near contiguous block 6 on lever jack 12 is provided with an inductive head 15, three described yarn guiding speed sensors 8 are set in turn in the side of described lever jack 12 and corresponding with described inductive head 15 along lever jack 12 axially spaced-apart certain distance, the winder unit of two-for-one twister comprises winding motor 19, rolling transmission mechanism, wireline reel and winding bobbin 10, rolling transmission mechanism comprises winding drive 17 and two winding synchronous pulleys, winding drive 17 is in transmission connection by the output shaft of driving belt 18 with described winding motor 19, winding drive 17 is coaxially connected with the winding synchronous pulley 14 described in one of them, another winding synchronous pulley 9 is set on described wireline reel 11, two winding synchronous pulleys are in transmission connection by Timing Belt 13, winding bobbin 10 is set in described wireline reel 11, winding speed sensor 16 is arranged at winding drive 17 side of two-for-one twister winder unit, for detecting winding rotary speed, the spindle unit of two-for-one twister comprises spindle motor 20, spindle transmission mechanism and spindle 25, spindle transmission mechanism comprises spindle drive 26, tengential belt 24 and two tengential belt drives 22 arranged that keep at a certain distance away, spindle drive 26 is in transmission connection by the output shaft of driving belt 21 with described spindle motor 20, spindle drive 26 is coaxially connected with one of them tengential belt drive 22, tengential belt 24 is set in two described tengential belt drives, spindle 25 is resisted against on described tengential belt 24 and drives rotation by tengential belt, described spindle velocity sensor 23 is arranged at the side of the tengential belt drive 22 of double-twisting machine spindle unit, for detecting spindle rotating speed, described control system all with winding speed sensor 16, spindle velocity sensor 23 and three yarn guiding speed sensors 8, the PLC program of described control system comprises velocity ratio comparatively module and yarn guiding speed module, what speed comparison module comprised spindle rotating speed, winding rotary speed and yarn guiding speed to reality and setting draws the module that yarn speed and standard yarn guiding speed compare, and yarn guiding speed module comprises the control module of adjustment servomotor being made to speed and acceleration.
When apparatus of the present invention use, winding motor 19 drives winding drive 17 to rotate, by winding synchronous pulley, toothed belt transmission band is with wireline reel 11 High Rotation Speed, winding speed sensor 16 is responded to the rotating speed of winding drive 17 and then can be recorded actual winding rotary speed, spindle motor 20 is driven through spindle drive 26 and rotates, rotated with spindle by the driving belt of tengential belt drive and tengential belt, spindle velocity sensor 23 is responded to the rotating speed of spindle drive 26 and then can be recorded actual spindle rotating speed, servomotor 1 drives guide drive 3 positive and negative rotation, guide synchronous pulley 5 is driven to rotate by transmission shaft driven, the guide Timing Belt 4 on guide synchronous pulley 5 is made to drive lever jack 12 reciprocating motion, namely inductive head 15 reciprocating transverse movement on lever jack 12, coordinate with three yarn guiding speed sensors 8 respectively and respond to, record actual yarn guiding speed, by the above-mentioned actual winding rotary speed recorded, the data feedback of spindle rotating speed and yarn guiding speed is to control system, the PLC program of control system is by the winding rotary speed of reality, spindle rotating speed and yarn guiding speed and setting draw yarn speed and standard yarn guiding speed Negotiation speed comparison module compares, and by yarn guiding speed module, servomotor is made to the adjustment of speed and acceleration, realize adjusting the control of yarn guiding speed, ensure that the stability of angle, thus improve and draw yarn speed, realize arranging the dislocation of yarn and reach anti-stacked effect.

Claims (3)

1. the electronics guide method for two-for-one twister, it is characterized in that: use driven by servomotor Timing Belt loop Direct driver lever jack to move back and forth, each round traverse of setting lever jack is as a minor cycle, within the same minor cycle, the yarn guiding speed of lever jack is constant, five continuous print minor cycles form a large period, in a large period, yarn guiding speed divides corresponding Pyatyi to carry out circulation change by control system control corresponding five minor cycles, the median of setting Pyatyi is standard yarn guiding speed, the maximum of described Pyatyi and the minimum of a value amplitude of variation respectively and between median is no more than 10% of standard yarn guiding speed, namely angle is changed accordingly, standard yarn guiding speed changes on year-on-year basis with drawing yarn speed, draw yarn speed to set according to yarn double twisting processing technology, spindle speed sensor and winding speed sensor is used to detect spindle rotating speed and winding rotary speed respectively, keep at a certain distance away in traverse control place of lever jack and successively three sensors are installed, three sensors coordinate the yarn guiding speed responded to and detect reality with the inductive head on lever jack, the spindle rotating speed of the reality detected, winding rotary speed and yarn guiding speed data feedback are to control system, the PLC program of control system is by the spindle rotating speed of reality, winding rotary speed and yarn guiding speed and setting draw yarn speed and standard yarn guiding speed compares, and by its yarn guiding speed control module, servomotor is made to the adjustment of speed and acceleration.
2. a kind of electronics guide method for two-for-one twister according to claim 1, is characterized in that: the amplitude of variation of the yarn guiding speed in described each minor cycle and the yarn guiding speed of previous stage is 5%.
3. one kind realizes the electronic yarn guide device of above-mentioned electronics guide method, comprise Yarn guide mechanism and control system, Yarn guide mechanism comprises lever jack, lever jack traversing driving mechanism and guide transmission mechanism, it is characterized in that: described electronic yarn guide device also comprises winding speed sensor, spindle velocity sensor and three yarn guiding speed sensors, described winding speed sensor setting is in the winding drive side of two-for-one twister winder unit, described spindle velocity sensor is arranged at the side of the tengential belt drive of double-twisting machine spindle unit, described guide traversing driving mechanism is servomotor, described guide transmission mechanism comprises guide drive, guide synchronous pulley and regulating wheel, guide drive is in transmission connection by the output shaft of driving belt and described servomotor, guide drive is coaxially connected with described guide synchronous pulley by a power transmission shaft, described guide Timing Belt is set on described regulating wheel and guide synchronous pulley, partial fixing in horizontally set on guide Timing Belt is connected with a contiguous block, described lever jack one end is fixedly connected with described contiguous block, a place near contiguous block on lever jack is provided with an inductive head, three described yarn guiding speed sensors are set in turn in the side of described lever jack and corresponding with described inductive head along lever jack axially spaced-apart certain distance, described control system all with winding speed sensor, spindle velocity sensor and three yarn guiding speed sensors, the PLC program of described described control system comprises velocity ratio comparatively module and yarn guiding speed module, speed comparison module comprises the spindle rotating speed to reality, winding rotary speed and yarn guiding speed and setting draw the module that yarn speed and standard yarn guiding speed compare, yarn guiding speed module comprises the control module of adjustment servomotor being made to speed and acceleration.
CN201510030420.9A 2015-01-21 2015-01-21 Electronic yarn guide method applied to two-for-one twister and device thereof Active CN104775202B (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105239228A (en) * 2015-10-12 2016-01-13 安徽日发纺织机械有限公司 Synchronous stopping device of yarn arrangement device in case of power off
CN111139560A (en) * 2019-12-27 2020-05-12 南京工程学院 Spindle main transmission device, control system and method
CN115787158A (en) * 2022-12-01 2023-03-14 吴江市万利来丝绸整理有限公司 Intelligent two-for-one twisting control system and method

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1191132A2 (en) * 2000-09-22 2002-03-27 Kabushiki Kaisha Toyota Jidoshokki Operation control system for single spindle driving spinning machines
JP2004168547A (en) * 2002-11-16 2004-06-17 Saurer Gmbh & Co Kg Winding device for working part of textile machine for manufacturing twill weave winding bobbin
CN1558008A (en) * 2004-01-17 2004-12-29 无锡市宏源针织机械厂 Microcomputer-controlled two-for-one twister
CN101104489A (en) * 2006-07-14 2008-01-16 黄福庭 Groove drum guide yarn electric folding-proof device employing self-adapting control and method thereof
CN102799139A (en) * 2012-06-15 2012-11-28 欧瑞传动电气有限公司 Electronic wire control device and control method thereof
CN103147178A (en) * 2013-03-22 2013-06-12 杭州电子科技大学 Novel high-speed two-for-one twister control system and method based on brushless direct current motors
CN204417707U (en) * 2015-01-21 2015-06-24 浙江日发纺织机械股份有限公司 A kind of electronic yarn guide device for two-for-one twister

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1191132A2 (en) * 2000-09-22 2002-03-27 Kabushiki Kaisha Toyota Jidoshokki Operation control system for single spindle driving spinning machines
JP2004168547A (en) * 2002-11-16 2004-06-17 Saurer Gmbh & Co Kg Winding device for working part of textile machine for manufacturing twill weave winding bobbin
CN1558008A (en) * 2004-01-17 2004-12-29 无锡市宏源针织机械厂 Microcomputer-controlled two-for-one twister
CN101104489A (en) * 2006-07-14 2008-01-16 黄福庭 Groove drum guide yarn electric folding-proof device employing self-adapting control and method thereof
CN102799139A (en) * 2012-06-15 2012-11-28 欧瑞传动电气有限公司 Electronic wire control device and control method thereof
CN103147178A (en) * 2013-03-22 2013-06-12 杭州电子科技大学 Novel high-speed two-for-one twister control system and method based on brushless direct current motors
CN204417707U (en) * 2015-01-21 2015-06-24 浙江日发纺织机械股份有限公司 A kind of electronic yarn guide device for two-for-one twister

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105239228A (en) * 2015-10-12 2016-01-13 安徽日发纺织机械有限公司 Synchronous stopping device of yarn arrangement device in case of power off
CN111139560A (en) * 2019-12-27 2020-05-12 南京工程学院 Spindle main transmission device, control system and method
CN111139560B (en) * 2019-12-27 2022-06-07 南京工程学院 Spindle main transmission device, control system and method
CN115787158A (en) * 2022-12-01 2023-03-14 吴江市万利来丝绸整理有限公司 Intelligent two-for-one twisting control system and method
CN115787158B (en) * 2022-12-01 2024-03-05 吴江市万利来丝绸整理有限公司 Intelligent two-for-one twisting control system and method

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Inventor after: Sheng Liangjun

Inventor after: Dai Xiaoping

Inventor after: He Xuping

Inventor after: Jiang Li

Inventor before: Sheng Liangjun

Inventor before: Dai Xiaoping

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Effective date of registration: 20191206

Address after: 312500, No. 5, Digital Science Park, Qixing street, Xinchang County, Shaoxing, Zhejiang

Patentee after: ZHEJIANG RIFA TEXTILE MACHINERY CO., LTD.

Address before: 312500, Xinchang Shaoxing hi tech Park (Nan Yan), Zhejiang Digital Technology Park

Patentee before: Zhejiang Rifa Textile Machinery Co.,Ltd.

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