CN102704165A - Method for controlling motion state of yarn conveying wheel on yarn storage device - Google Patents
Method for controlling motion state of yarn conveying wheel on yarn storage device Download PDFInfo
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- CN102704165A CN102704165A CN2012101875887A CN201210187588A CN102704165A CN 102704165 A CN102704165 A CN 102704165A CN 2012101875887 A CN2012101875887 A CN 2012101875887A CN 201210187588 A CN201210187588 A CN 201210187588A CN 102704165 A CN102704165 A CN 102704165A
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Abstract
The invention relates to a method for controlling the motion state of a yarn conveying wheel in the field of knitting equipment. A method for controlling the motion state of the yarn conveying wheel on a yarn storage device comprises the following steps of: (1) allowing all emitters to emit light; (2) comparing reflected strong and weak signals reflected by metal spokes with reflected strong and weak signals reflected by a plastic shading sleeve; and (3) calculating the current yarn quantity through difference, and calculating the rotating speed of a motor according to the current yarn quantity and the yarn feeding tension required to be arrived, wherein a variable signal is formed after the change of the difference is calculated by a control chip, the variable signal controls conduction angle and time of controlled silicon in a circuit, and the rotating speed of the motor is controlled. The method for controlling the motion state of the yarn conveying wheel on the yarn storage device has the advantages that yarn feeding and discharging speed and tension on the yarn conveying wheel can be kept consistent, and the motor is switched accurately.
Description
Technical field
The present invention relates to the control method of line-transmitting wheel motion state in the knitting equipment field.
Background technology
Yarn storage device is the vitals on the knitting machine, and yarn storage device mainly comprises housing and main shaft and line-transmitting wheel mounted thereto, and yarn ring and tension ring are pressed in socket on the line-transmitting wheel, and main shaft is in the circle centre position of line-transmitting wheel, and main shaft drives the line-transmitting wheel rotation and stores up yarn.The storage yarn is that yarn advances yarn and is stored on the line-transmitting wheel, and defeated yarn is that yarn passes through tension ring and exports from line-transmitting wheel.Yarn storage device storage yarn process is following: motor rotates and drives the line-transmitting wheel rotation, and yarn constantly increases on line-transmitting wheel in storage yarn process, along with the increase of yarn; Afterburning constantly increase; Move on the pressure yarn hoop on the line-transmitting wheel, when on pressing the yarn hoop, moving to a certain degree, contact the switch that makes the inside with limit switch and break off; This moment, motor quit work, and the storage yarn stops.The defeated line process of yarn storage device is following: yarn constantly reduces on line-transmitting wheel in defeated line process, presses the yarn ring because tension force reduces, and is also constantly moving down; When moving down into to a certain degree, contact the switch opens that makes the inside with limit switch, machine operation continues the storage yarn; When line-transmitting wheel storage yarn arrived to a certain degree, switch was disconnected, and motor stops; The storage yarn stops, so circulation.The motion mode of existing yarn storage device is to control through mechanical switch; Especially motor speed can not be adjusted; The deficiency of its existence is: 1. storage during yarn motor from start to finish rotating speed is identical, along with the thickness of yarn on the increase line-transmitting wheel of yarn is different, when therefore advancing yarn on the line-transmitting wheel yarn to advance yarn speed all different with tension force; And be that speed and tension force are substantially invariable during through the defeated yarn of the defeated yarn speed yarn storage device of tension ring control during the defeated yarn of yarn storage device; Speed and tension force when speed when line-transmitting wheel advances yarn on the yarn storage device and tension force and yarn are inconsistent, and tension fluctuation is bigger, therefore influence the quality of knit product; 2. motor stops to adopt the mode of mechanical switch; The full yarn of line-transmitting wheel is promptly pressed to move on the yarn hoop and contact the switch that makes the inside with limit switch and be disconnected to the during this period of time line-transmitting wheel of motor between stopping operating also at the storage yarn, and yarn during this period of time advances yarn tension and fluctuates very big; In like manner, defeated yarn need to begin that yarn exhausts on the line-transmitting wheel, and life period was poor between yarn exhausted and rotates to limit switch control motor, and the generation main cause of the problems referred to above is that the mode causes motor switch of mechanical type control motor switch is not accurate.
Summary of the invention
The objective of the invention is deficiency for the control method existence that overcomes above-mentioned existing line-transmitting wheel motion state; A kind of method of controlling line-transmitting wheel motion state on the yarn storage device is provided; Speed, the tension force that can make yarn on the line-transmitting wheel advance yarn and yarn are consistent, and motor switch is accurate.
In order to realize the foregoing invention purpose, the present invention has adopted following technical scheme:
A kind of method of controlling line-transmitting wheel motion state on the yarn storage device; Said yarn storage device comprises motor, photoelectric sensor, housing and main shaft, plastics shading sleeve and line-transmitting wheel mounted thereto; Main shaft is in the circle centre position of line-transmitting wheel; Motor drives line-transmitting wheel through main shaft and rotates, and photoelectric sensor is in the outside of line-transmitting wheel, and the plastics shading sleeve is enclosed within and prevents on the main shaft that it is reflective; Said line-transmitting wheel is provided with the metal spoke, is provided with the gap between the adjacent metal spoke; Said photoelectric sensor comprises two groups of photoelectric tubes at least, and every group of photoelectric tube includes transmitter and receiving tube, the gap location on the metal spoke on the corresponding line-transmitting wheel of at least one group of photoelectric tube wherein, at least one group of corresponding line-transmitting wheel of photoelectric tube; The method of line-transmitting wheel motion state comprises the steps: that (1) all transmitters are luminous on the said control yarn storage device; Wherein at least one group of light process metal spoke reflection that transmitter sends, its corresponding receiving tube receives the reflection strong and weak signals that the metal spoke reflects; Wherein the light that sends of at least one group of transmitter gets into the gap location on the line-transmitting wheel, and its corresponding receiving tube receives the reflection strong and weak signals that the plastics shading sleeve reflects; (2) the reflection strong and weak signals that reflection strong and weak signals that the metal spoke is reflected and plastics shading sleeve reflect is compared, and produces difference; (3) can calculate current amount of thread through difference; And calculate motor speed according to the yarn tension that advances that current amount of thread and needs reach; The variation of difference forms variable signal after control chip calculates; Silicon controlled conducting angle and time are controlled rotating speed of motor with this in the variable signal control circuit; The switch of said motor is by the reflection strong and weak signals control of metal spoke and plastics shading sleeve.
As preferably, comprise the steps: that (1) all transmitters are luminous, wherein the light that sends of at least one group of transmitter is through the reflection of metal spoke, its corresponding receiving tube receive reflection strong and weak signals that the metal spoke reflects and reflection interval signal; Wherein the light that sends of at least one group of transmitter gets into the gap location on the line-transmitting wheel, its corresponding receiving tube receive reflection strong and weak signals that the plastics shading sleeve reflects and reflection interval signal; (2) the reflection strong and weak signals that the reflection strong and weak signals that the metal spoke is reflected, reflection interval, signal and plastics shading sleeve reflected, reflection interval, signal compared respectively, produce reflection strong and weak signals difference and reflection interval signal difference; (3) through the reflection strong and weak signals difference and reflection interval signal difference calculate current amount of thread respectively; And calculate motor speed according to the yarn tension that advances that current amount of thread and needs reach; The variation of difference forms variable signal after control chip calculates; Silicon controlled conducting angle and time are controlled rotating speed of motor with this in the variable signal control circuit.
As preferably; Said plastics shading sleeve is the round plastic shading sleeve; Round plastic shading sleeve and line-transmitting wheel are center of circle concentric arrangement with the main shaft, and the distance of all photoelectric sensors to round plastic shading sleeve lateral wall is identical, and the distance of all photoelectric tubes to metal spoke lateral wall is identical.
As preferably, said electric transducer is made up of three groups of photoelectric tubes.
Adopted a kind of method of controlling line-transmitting wheel motion state on the yarn storage device of technique scheme; During yarn storage device storage yarn, photoelectric sensor is luminous to the gap location on metal spoke and the line-transmitting wheel respectively, different according to rotating speed and material; The reflected signal of metal spoke and shading sleeve is different; Produce difference through metal spoke reflected signal strengths different with shading sleeve, through the variation control rotating speed of motor of difference, speed and tension force when making speed and the tension force and the yarn of yarn storage device storage yarn are consistent; Improve the quality of knit product, and detect the yarn amount through photoelectric sensor and how much control motor switch.The method of line-transmitting wheel motion state on this control yarn storage device, advantage be that speed, the tension force that can make yarn on the line-transmitting wheel advance yarn and yarn is consistent, and motor switch is accurate.
Description of drawings
Fig. 1: the structural representation of yarn storage device in the embodiment of the invention.
Fig. 2: the structural representation of yarn storage device that does not have the line-transmitting wheel of assembling in the embodiment of the invention.
The specific embodiment
The present invention is done with Fig. 2 below in conjunction with accompanying drawing 1 and to further describe.
A kind of method of controlling line-transmitting wheel motion state on the yarn storage device as depicted in figs. 1 and 2; Yarn storage device comprises motor; Housing 1 and be installed in photoelectric sensor 2, main shaft, shading sleeve 6 and the line-transmitting wheel 3 on the housing 1; Yarn ring 5 and tension ring 4 are pressed in socket on the line-transmitting wheel 3, press yarn ring 5 to make yarn to downslide, speed and tension force when yarn is failed in tension ring 4 controls.Main shaft is in the circle centre position of line-transmitting wheel 3, and motor drives line-transmitting wheel 3 through main shaft and rotates, and photoelectric sensor 2 is installed on the housing 1 and the position is in the outside of line-transmitting wheel 3.Shading sleeve 6 is enclosed within and prevents on the main shaft that it is reflective.Line-transmitting wheel 3 is provided with metal spoke 31 regularly arranged and that width is identical, is provided with the identical gap of width 32 between the adjacent metal spoke 31, and metal spoke 31 is identical with the width in gap 32.Photoelectric sensor 2 comprises two groups of photoelectric tubes at least, 32 places, gap on the metal spoke 31 on the corresponding line-transmitting wheel 3 of at least one group of photoelectric tube wherein, at least one group of corresponding line-transmitting wheel 3 of photoelectric tube.Shading sleeve 6 is round plastic shading sleeves, and round plastic shading sleeve and line-transmitting wheel 3 are center of circle concentric arrangement with the main shaft, and the round plastic shading sleeve is connected as a single entity with pressing yarn ring 5.The distance of all photoelectric tubes to shading sleeve 6 lateral walls is identical, and the distance of all photoelectric tubes to metal spoke 31 lateral walls is identical, has guaranteed that promptly the time of reception of all photoelectric tubes in the gap 32 on the corresponding line-transmitting wheel 3 is identical.At least one group of photoelectric tube transmits to metal spoke 31, and 31 reflections of metal spoke produce a reflection strong and weak signals.At least one group of photoelectric tube transmits to 32 places, gap, and shading sleeve 6 reflections produce a reflection strong and weak signals, through the difference generation control signal control rotating speed of motor of two reflection strong and weak signals.Also can further confirm into amount of thread, and the motion mode of the control of the reflected signal through photoelectric sensor 2 motor, promptly start shooting and shut down through two reflection strong and weak signals.
The method of line-transmitting wheel motion state comprises the steps: that the transmitter on (1) all photoelectric tubes is luminous on the control yarn storage device; Wherein at least one group of light process metal spoke 31 reflections that transmitter sends, corresponding receiving tube receives the reflection strong and weak signals that metal spoke 31 reflects; Wherein the light that sends of at least one group of transmitter gets into 32 places, gap on the line-transmitting wheel 3, and its corresponding receiving tube receives the reflection strong and weak signals that the plastics shading sleeve reflects; (2) the reflection strong and weak signals that reflection strong and weak signals that metal spoke 31 is reflected and plastics shading sleeve reflect is compared, and produces a difference; (3) can calculate current amount of thread through difference; And calculate motor speed according to the yarn tension that advances that current amount of thread and needs reach; The variation of difference forms variable signal after control chip calculates; Silicon controlled conducting angle and time are controlled rotating speed of motor with this in the variable signal control circuit.
When work, along with the rotation of line-transmitting wheel 3, the yarn on the line-transmitting wheel 3 increases, and the amplitude of input reduces, and explains that into yarn speed lets motor speed reduce greater than yarn speed this moment.When advancing yarn speed and be lower than yarn speed, the amplitude of input increases, and control motor and rev up this moment, and storage yarn speed strengthens.This a reference value changes according to the difference of yarn; For example when sending white yarn, constant defeated yarn speed and tension value during the defeated yarn of corresponding line-transmitting wheel 3, its signal voltage is 2V; Storage during yarn when signal voltage maintenance present speed during for 2V; Control motor reduction of speed when hanging down with 2V, the control motor quickens when being higher than 2V, and adjusts motor speed accordingly through the scope of difference variation.
A kind of method of controlling line-transmitting wheel motion state on the yarn storage device as depicted in figs. 1 and 2; Yarn storage device structure and embodiment are identical; Difference only is that photoelectric tube transmits to metal spoke 31; Metal spoke 31 reflection produces reflection strong and weak signals and signal reflection interval, and photoelectric tube transmits to 32 places, gap, shading sleeve 6 reflections produce reflect strong and weak signals and reflection interval signal.The difference of signal also produces control signal control rotating speed of motor through reflection interval.
A kind of method of controlling line-transmitting wheel motion state on the yarn storage device; Comprise the steps: that (1) all transmitters are luminous; Wherein the light that sends of at least one group of transmitter is through 31 reflections of metal spoke, its corresponding receiving tube receive reflection strong and weak signals that metal spoke 31 reflects and reflection interval signal; Wherein the light that sends of at least one group of transmitter gets into 32 places, gap on the line-transmitting wheel 3, its corresponding receiving tube receive reflection strong and weak signals that the plastics shading sleeve reflects and reflection interval signal; (2) the reflection strong and weak signals that the reflection strong and weak signals that the metal spoke is reflected, reflection interval, signal and plastics shading sleeve reflected, reflection interval, signal compared respectively, produce reflection strong and weak signals difference and reflection interval signal difference; (3) through the reflection strong and weak signals difference and reflection interval signal difference can calculate current amount of thread respectively; And calculate motor speed according to the yarn tension that advances that current amount of thread and needs reach; The variation of difference forms variable signal after control chip calculates; Silicon controlled conducting angle and time are controlled rotating speed of motor with this in the variable signal control circuit.
Begin there is a time from advancing yarn to full yarn; Also can judge the speed of passing through of yarn through the length of computing time, when from the high level to the low level time, increasing, prove that rotating speed is slow excessively; The control motor revs up; If high level reduces to low level time, prove excessive velocities, the control motor reduces rotating speed.Control the output speed of motor according to top 2 kinds of method synthesis, thereby reach a kind of state of stable output.
Claims (4)
1. method of controlling line-transmitting wheel motion state on the yarn storage device; It is characterized in that said yarn storage device comprises motor, photoelectric sensor, housing and main shaft, plastics shading sleeve and line-transmitting wheel mounted thereto; Main shaft is in the circle centre position of line-transmitting wheel; Motor drives line-transmitting wheel through main shaft and rotates, and photoelectric sensor is in the outside of line-transmitting wheel, and the plastics shading sleeve is enclosed within and prevents on the main shaft that it is reflective; Said line-transmitting wheel is provided with the metal spoke, is provided with the gap between the adjacent metal spoke; Said photoelectric sensor comprises two groups of photoelectric tubes at least, and every group of photoelectric tube includes transmitter and receiving tube, the gap location on the metal spoke on the corresponding line-transmitting wheel of at least one group of photoelectric tube wherein, at least one group of corresponding line-transmitting wheel of photoelectric tube; The method of line-transmitting wheel motion state comprises the steps: that (1) all transmitters are luminous on the said control yarn storage device; Wherein at least one group of light process metal spoke reflection that transmitter sends, its corresponding receiving tube receives the reflection strong and weak signals that the metal spoke reflects; Wherein the light that sends of at least one group of transmitter gets into the gap location on the line-transmitting wheel, and its corresponding receiving tube receives the reflection strong and weak signals that the plastics shading sleeve reflects; (2) the reflection strong and weak signals that reflection strong and weak signals that the metal spoke is reflected and plastics shading sleeve reflect is compared, and produces difference; (3) through the current amount of thread of difference measuring and calculating; And calculate motor speed according to the yarn tension that advances that current amount of thread and needs reach; The variation of difference forms variable signal after control chip calculates, silicon controlled conducting angle and time are controlled rotating speed of motor with this in the variable signal control circuit; The switch of said motor is by the reflection strong and weak signals control of metal spoke and plastics shading sleeve.
2. a kind of method of controlling line-transmitting wheel motion state on the yarn storage device according to claim 1; It is characterized in that comprising the steps: that (1) all transmitters are luminous; Wherein the light that sends of at least one group of transmitter is through the reflection of metal spoke, its corresponding receiving tube receive reflection strong and weak signals that the metal spoke reflects and reflection interval signal; Wherein the light that sends of at least one group of transmitter gets into the gap location on the line-transmitting wheel, its corresponding receiving tube receive reflection strong and weak signals that the plastics shading sleeve reflects and reflection interval signal; (2) the reflection strong and weak signals that the reflection strong and weak signals that the metal spoke is reflected, reflection interval, signal and plastics shading sleeve reflected, reflection interval, signal compared respectively, produce reflection strong and weak signals difference and reflection interval signal difference; (3) through the reflection strong and weak signals difference and reflection interval signal difference can calculate current amount of thread respectively; And calculate motor speed according to the yarn tension that advances that current amount of thread and needs reach; The variation of difference forms variable signal after control chip calculates; Silicon controlled conducting angle and time are controlled rotating speed of motor with this in the variable signal control circuit.
3. a kind of method of controlling line-transmitting wheel motion state on the yarn storage device according to claim 1; It is characterized in that said plastics shading sleeve is the round plastic shading sleeve; Round plastic shading sleeve and line-transmitting wheel are center of circle concentric arrangement with the main shaft; The distance of all photoelectric sensors to round plastic shading sleeve lateral wall is identical, and the distance of all photoelectric tubes to metal spoke lateral wall is identical.
4. a kind of method of controlling line-transmitting wheel motion state on the yarn storage device according to claim 1 is characterized in that said electric transducer is made up of three groups of photoelectric tubes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101875887A CN102704165A (en) | 2012-06-08 | 2012-06-08 | Method for controlling motion state of yarn conveying wheel on yarn storage device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101875887A CN102704165A (en) | 2012-06-08 | 2012-06-08 | Method for controlling motion state of yarn conveying wheel on yarn storage device |
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| CN102704165A true CN102704165A (en) | 2012-10-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012101875887A Pending CN102704165A (en) | 2012-06-08 | 2012-06-08 | Method for controlling motion state of yarn conveying wheel on yarn storage device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106592084A (en) * | 2017-02-22 | 2017-04-26 | 武汉纺织大学 | Yarn conveying device and method for electromagnetic driving circular knitting machine |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1207083A (en) * | 1995-12-08 | 1999-02-03 | 梅名格-Iro公司 | Method for monitoring scanning conditions during control of a yarn feeder |
| JP2004210045A (en) * | 2002-12-27 | 2004-07-29 | Ishikawajima Harima Heavy Ind Co Ltd | Monitoring device |
| US20040217224A1 (en) * | 2003-04-30 | 2004-11-04 | Riccardo Lonati | Device and method for adjusting the gram force applied to the thread, for feeding thread to a knitting machine with constant tension |
| CN201890998U (en) * | 2010-05-11 | 2011-07-06 | 典洋针织机械股份有限公司 | Yarn storage device with one-way control device |
-
2012
- 2012-06-08 CN CN2012101875887A patent/CN102704165A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1207083A (en) * | 1995-12-08 | 1999-02-03 | 梅名格-Iro公司 | Method for monitoring scanning conditions during control of a yarn feeder |
| JP2004210045A (en) * | 2002-12-27 | 2004-07-29 | Ishikawajima Harima Heavy Ind Co Ltd | Monitoring device |
| US20040217224A1 (en) * | 2003-04-30 | 2004-11-04 | Riccardo Lonati | Device and method for adjusting the gram force applied to the thread, for feeding thread to a knitting machine with constant tension |
| CN201890998U (en) * | 2010-05-11 | 2011-07-06 | 典洋针织机械股份有限公司 | Yarn storage device with one-way control device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106592084A (en) * | 2017-02-22 | 2017-04-26 | 武汉纺织大学 | Yarn conveying device and method for electromagnetic driving circular knitting machine |
| CN106592084B (en) * | 2017-02-22 | 2019-04-05 | 武汉纺织大学 | A kind of yarn-feeding device and method of electromagnetic drive circular knitting machine |
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Application publication date: 20121003 |