CN108866785A - The yarn-feeding device of elastomeric yarn in straight-bar machines - Google Patents
The yarn-feeding device of elastomeric yarn in straight-bar machines Download PDFInfo
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- CN108866785A CN108866785A CN201810425310.6A CN201810425310A CN108866785A CN 108866785 A CN108866785 A CN 108866785A CN 201810425310 A CN201810425310 A CN 201810425310A CN 108866785 A CN108866785 A CN 108866785A
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- yarn
- tension
- correcting value
- elastomeric yarn
- elastomeric
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
- D04B15/38—Devices for supplying, feeding, or guiding threads to needles
- D04B15/48—Thread-feeding devices
- D04B15/50—Thread-feeding devices for elastic threads
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
- D04B15/38—Devices for supplying, feeding, or guiding threads to needles
- D04B15/44—Tensioning devices for individual threads
- D04B15/46—Tensioning devices for individual threads for elastic threads
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
- D04B15/38—Devices for supplying, feeding, or guiding threads to needles
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B7/00—Flat-bed knitting machines with independently-movable needles
- D04B7/04—Flat-bed knitting machines with independently-movable needles with two sets of needles
- D04B7/045—Flat-bed knitting machines with independently-movable needles with two sets of needles with stitch-length regulation
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Knitting Machines (AREA)
- Braiding, Manufacturing Of Bobbin-Net Or Lace, And Manufacturing Of Nets By Knotting (AREA)
Abstract
The present invention provides a kind of yarn-feeding device of the elastomeric yarn in straight-bar machines, send yarn using the necessity for being able to carry out the stretching and the contraction that consider elastomeric yarn in the knitting braiding of elastomeric yarn on straight-bar machines.Elastomeric yarn is compared to the size into knitting tension caused by tension and buffer arm that the delivering mechanism of straight-bar machines enters, result determines correcting value appropriate according to correction parameter and carries out the control of delivering mechanism based on this comparison.Correction parameter has the increased correcting value of yarn amount of the elastomeric yarn when entering tension and being greater than knitting tension, and there is the correcting value of the yarn amount reduction of elastomeric yarn when entering tension and being less than knitting tension, correcting value determining means determines correcting value appropriate according to correction parameter, and control unit uses the control for by correcting value that correcting value determining means determines and carrying out delivering mechanism.
Description
Technical field
The present invention relates to stocking yarn is carried out when knitting weaves using the big elastomeric yarn of retractility on straight-bar machines for this
The yarn-feeding device of elastomeric yarn.
Background technique
All the time, it in the braiding of underwear, socks, flak jacket, clothes for sport, therapeutic medical elastic dressing etc., uses
Extensibility highland has been used to carry out the elastomeric yarn of flexible fiber.In the straight-bar machines for weaving these hosiery items, it is expected that making
The coil length of knitted fabric to be woven stabilizes, and is woven with pre-determined yarn amount.Do not have in each woven stitch row
In the case where having the yarn amount braiding with decision, difference is generated in size or feel, tension etc. in hosiery item.
The prior art of yarn-feeding device as the elastomeric yarn in loom, such as following bulletin can be enumerated.
Patent document 1 (Japanese Patent No. 4016030) describes following content：Based on weave data, to each knitting needle
Necessary coil length is found out, the movement with yarn guide synchronously actively conveys stocking yarn, passes through row braiding front and back
The angle displacement of buffer arm, and carry out loop density correction.
But in the invention, in the case where the tension of the elastomeric yarn into Yarn Feeder Device is non-constant, by actively conveying
And the elastomeric yarn contraction or stretching sent out, therefore the yarn in woven stitch row to the elastomeric yarn of yarn is long poor with theoretical value generation
It is different.As a result, after next row, carried out if wishing to make the yarn in woven stitch row to be grown to defined yarn length
Loop density correction, but the correction of mistake can be become, it is difficult to make the yarn amount of elastomeric yarn close to theoretical value.
In patent document 2 (Japanese Patent No. 2541574), using lead arm to stocking yarn offer tension, and in order to
It copes with variation sharply and carries out prepared accumulation, energetically send out stocking yarn and inhibit the variation of yarn tension.In braiding
Lead arm detects the tension of stocking yarn, in order to become defined tension, and carries out driving as the electronic of the yarn wheel of preparation accumulation
The control of machine.
But in the invention, preparation accumulation is formed by yarn wheel, therefore device enlargement.In addition, being wound in the elasticity of yarn wheel
The tension of yarn generates difference with the tension generated in lead arm, therefore elastomeric yarn is shunk on giving yarn path or elongation, therefore not
It can be just with the supply of necessary amount.In addition, regardless of elastomeric yarn with which type of tension winding in yarn wheel, yarn property can all become
Change, it is difficult to just with necessary amount elasticity of supply yarn.
【Citation】
【Patent document】
【Patent document 1】Japanese Patent No. 4016030
【Patent document 2】Japanese Patent No. 2541574
Summary of the invention
Project of the invention is to provide the elastomeric yarn in a kind of straight-bar machines using in the knitting braiding of elastomeric yarn on straight-bar machines
Yarn-feeding device will not make device enlarged, and be able to carry out and consider flexible necessity of elastomeric yarn and send yarn.
The present invention provides a kind of yarn-feeding device of the elastomeric yarn in straight-bar machines, has：
Delivering mechanism is sent out elastomeric yarn to yarn component using roller based on the weave data used in loom body；
Buffer arm accumulates the yarn sent out from the delivering mechanism and swing freely intermediate；
Torque generator, in order to make the knitting tension of the elastomeric yarn from delivering mechanism until to yarn component become specified value
And torque is applied to buffer arm；And
Control unit calculates the theoretical value of the coil length woven by each knitting needle, with synchronous with to the movement of yarn component
Necessity that ground carries out elastomeric yarn send the mode of yarn to control delivering mechanism,
The yarn-feeding device of elastomeric yarn in the straight-bar machines is characterised by comprising：
Tension sensor, configuration measure what the tension of elastomeric yarn entered as elastomeric yarn to roller in the upstream side of the roller
Into tension；
Correction parameter is used in order to which the yarn property according to elastomeric yarn makes coil length close to the correction of theoretical value；And
Correcting value determining means produces the entrance tension and the buffer arm of the elastomeric yarn of tension sensor measurement
The size of raw knitting tension is compared, and based on comparative result, determines the school for delivering mechanism according to the correction parameter
Positive quantity,
The correction parameter has the increased correcting value of yarn amount of the elastomeric yarn when entering tension and being greater than knitting tension, and has
There is the correcting value of the yarn amount reduction of elastomeric yarn when entering tension and being less than knitting tension, the correcting value determining means is according to
Correction parameter determines correcting value appropriate,
Described control unit uses the control for by correcting value that the correcting value determining means determines and carrying out delivering mechanism.
In addition, it is a feature of the present invention that the correction parameter has the contraction ginseng found out by the yarn property of elastomeric yarn
Several and extensograph parameter, the correcting value determining means determine to correct when entering tension and being greater than knitting tension using shrinkage parameters
Amount determines correcting value using extensograph parameter when entering tension and being less than knitting tension.
In addition, it is a feature of the present invention that about the elastomeric yarn measured by the tension sensor enter tension,
It calculates and uses the average value into tension value measured in specified interval.
In addition, it is a feature of the present invention that described control unit is in order to absorb and as described in after 1 row braiding
The error between theoretical value in the braiding for 1 row that the angle displacement of buffer arm is found out, and carry out next coil
Loop density correction in row.
In addition, it is a feature of the present invention that the correcting value determining means finds out the elasticity of the tension sensor measurement
Yarn into the difference between knitting tension caused by tension and the buffer arm, determined in a manner of reducing the difference for slow
The correcting value of the torque of arm, and being compared with the size of knitting tension into tension to elastomeric yarn are rushed, is tied based on comparing
Fruit determines the correcting value for delivering mechanism according to the correction parameter,
Described control unit by by the correcting value determining means determine for the torque of buffer arm correcting value and
The adjustment of the torque of the buffer arm is carried out, and carries out the control of delivering mechanism using the correcting value for delivering mechanism.
【Invention effect】
As previously discussed, in the present invention, in the knitting braiding on the straight-bar machines using elastomeric yarn, to elastomeric yarn to straight-bar machines
Delivering mechanism enter be compared into tension with the size of knitting tension caused by buffer arm, based on this comparison as a result,
Correcting value appropriate is determined according to correction parameter and carries out the control of delivering mechanism.Correction parameter, which has, is entering tension greater than volume
The yarn amount increased correcting value of elastomeric yarn when knitting tension, and there is the yarn amount of the elastomeric yarn when entering tension and being less than knitting tension to subtract
Few correcting value, correcting value determining means are determined according to the comparison result for entering tension and knitting tension for delivering mechanism
Corrected value appropriate, control unit carry out the control of delivering mechanism according to the correcting value of decision, therefore can make to be supplied to
The yarn amount of elastomeric yarn is close to theoretical value.
In addition, correction parameter, which has the shrinkage parameters found out according to the yarn property of elastomeric yarn and stretches, joins in the present invention
Number is corrected in the case where entering tension and being greater than knitting tension using shrinkage parameters, is less than braiding entering tension
It is corrected in the case where power using extensograph parameter, therefore the yarn amount for the elastomeric yarn being supplied to can be made more accurately close to reason
By value.
In addition, about the measurement into tension based on tension sensor, calculating measures in specified interval in the present invention
Tension value average value, therefore can make tension value stablize.
In addition, after 1 row weaves, weaving preceding and 1 row based on 1 row in the present invention
The angle change of buffer arm after braiding, in order to absorb and the braiding of 1 row in theoretical value between error and
Loop density correction is carried out in next row.Due to finding out the error of actual yarn amount in order to horizontal in next coil
The error is absorbed in column and carries out loop density correction, therefore can not be by the variation of braiding environment be influenced and make to be supplied to
The yarn amount of elastomeric yarn is close to theoretical value.
In the present invention, in the case where entering tension and knitting tension has differences, correcting value determining means determines buffering
The correcting value of the correcting value of the direct torque of arm and the control for delivering mechanism, control unit carry out the direct torque of buffer arm
Control this both sides with delivering mechanism.Thereby, it is possible to reduce each of the conveying control of the direct torque of buffer arm and delivering mechanism
From correcting value.
Detailed description of the invention
Fig. 1 is the figure for indicating the yarn-feeding device and straight-bar machines of embodiment.
Fig. 2 is the figure for indicating the yarn property of elastomeric yarn.
Fig. 3 is the figure for indicating shrinkage parameters and extensograph parameter in embodiment.
Fig. 4 is the flow chart for sending yarn to handle for indicating the elastomeric yarn of embodiment.
【Label declaration】
2 straight-bar machines ontologies
4 yarn-feeding devices
6 cam carriers
8 needle beds
12 yarn guides
14 elastomeric yarns
20 weave datas
22 braiding controllers
28 servomotors
30 driven rollers
32 driven vollers
34 delivering mechanisms
36 control units
38 torque generators
40 buffer arms
44 angular transducers
46 tension sensors
48 correcting value determining meanss
50 correction parameters
52 shrinkage parameters
54 extensograph parameters
Specific embodiment
Embodiment described below for carrying out an invention.
【Embodiment】
1 > of < embodiment
Fig. 1 shows the yarn-feeding device of the elastomeric yarn in the straight-bar machines of embodiment.Embodiment from the left side of straight-bar machines to yarn is shown,
But it can also be from top or right side to yarn.2 be straight-bar machines ontology in figure, and 4 be yarn-feeding device.Yarn-feeding device 4 and straight-bar machines 2 in embodiment
It is integrated, but yarn-feeding device 4 can also be made independent from straight-bar machines ontology 2.Hereinafter, straight-bar machines ontology 2 is referred to as straight-bar machines 2.Straight-bar machines 2
Have cam carrier 6 and such as a pair of of the needle bed 8 in front and back, enable to move along yarn guide track 10 as to yarn component
Yarn guide 12 is for example interlocked by cam carrier 6, for the knitting needle elasticity of supply yarn 14 of needle bed 8.
Cam carrier 6 is driven and is knitted by what triangle 18 selected by which knitting needle of the selection driving needle bed 8 of needle selection device 16
Needle and woven.20 be weave data, is supplied from LAN (not shown) or USB storage etc. to straight-bar machines 2.In weave data 20
The also control data etc. of the decorative pattern data comprising hosiery item, cam carrier 6 etc..Braiding controller 22 takes from weave data 20
The company of the control data, the needle selection data of knitting needle or loop density value, yarn guide 12 of the walking motor 24 of cam carrier 6 out
Dynamic data etc., control straight-bar machines 2, carry out knitting braiding.
Yarn-feeding device 4 takes out elastomeric yarn 14 from the tube 26 configured on the top of straight-bar machines 2, is driven by servomotor 28
Driven roller 30 is clamped by driven roller 30 and driven voller 32 and elastomeric yarn 14 is released and unrolled.By servomotor 28,
Driven roller 30, driven voller 32 constitute delivering mechanism 34.
The control of servomotor 28 is carried out by control unit 36.38 be torque generator, can generate desired torque,
It is controlled by control unit 36.The elastomeric yarn 14 released by driven roller 30 and driven voller 32 becomes expectation in braiding
Tension (hereinafter referred to as knitting tension) and by control unit 36 carry out torque generator 38 control.
40 be buffer arm, thread guides 42 is arranged in front end, from the bullet supplied between driven roller 30 and driven voller 32
Property yarn 14 is drawn from feed path.Buffer arm 40 is swung by from the torque of torque generator 38.The angle of buffer arm 40
Degree displacement can be detected by the angular transducer 44 of the settings such as output shaft in torque generator 38.
46 be tension sensor, and the driven roller 30 of delivering mechanism 34 and driven is arranged on the thread path of elastomeric yarn 14
The upstream side of roller 32 measures the tension of elastomeric yarn 14.In the present embodiment, it is known as the tension of measurement to enter tension.48 be correction
Measure determining means, to as tension sensor 46 measure into braiding caused by the torque generator 38 of tension and buffer arm 40
The size of tension is compared, by submitting machine in a manner of being supplied to the yarn amount of elastomeric yarn 14 of yarn guide 12 close to theoretical value
The conveying capacity of the decision elastomeric yarn 14 of structure 34.
50 be correction parameter, based on the yarn property of elastomeric yarn 14 ready for use, stores correcting value.In correction parameter 50,
Prepare shrinkage parameters 52 and extensograph parameter 54 this 2 kinds of parameters.
Herein, the yarn property of elastomeric yarn 14 is illustrated.
In the present invention, in order to make the yarn amount for the elastomeric yarn 14 being supplied to close to theoretical value, correcting value appropriate (correction is determined
Parameter) and the control of delivering mechanism 34 is carried out, but in order to find out the correction parameter 50, need the yarn of elastomeric yarn 14 ready for use
Characteristic.The yarn property of elastomeric yarn 14 is different according to the type of elastomeric yarn 14 ready for use.Even the elasticity of identical type
Yarn 14, according to batch or the difference of color etc., yarn property is also different.In order to make the yarn amount for the elastomeric yarn 14 being supplied to close to reason
By value, the yarn property of the elastomeric yarn for obtaining actual use preferred first.
As the method for the yarn property for finding out elastomeric yarn 14, yarn is measured using automatic pulling test machine of yarn etc.
Characteristic.Necessary yarn property refers to elongation characteristics here, by the elastomeric yarn 14 of specific length (such as 10cm or 20cm etc.)
After gently traction is until defined tensile stress from tension is 0 state, make the traction for being applied to elastomeric yarn 14
Tension slowly change until drawing tension be 0 until, find out the stretching for elastomeric yarn 14 and shorten this both sides tension and this
When elastomeric yarn 14 length relationship.
Table shown in Fig. 2 is an example of the yarn property of elastomeric yarn 14.The part that drawing tension is 20gf to 30gf is taken out
It records, but is actually measured in broader range out.Elastomeric yarn 14 due to lag influence and have once extend after
Elastomeric yarn 14 be not restored to the characteristic of the original length.Therefore as shown in Figure 2, even identical drawing tension, in elasticity
In the case that yarn 14 stretches and in the case where shrinking, there is also differences for extensibility and shrinking percentage.
It should be noted that the acquirement of yarn property can also carry out manually without using automatic pulling test machine, or
In Fig. 1, in the upstream of tension sensor 46, setting is fixed by elastomeric yarn 14 by the fixed fixture of elastomeric yarn 14, in the state
The driven roller 30 of lower driving delivering mechanism 34, releases elastomeric yarn 14 and measures tension, then, makes elastomeric yarn 14 unroll and measure to open
Thus power can also obtain yarn property on loom.
Then, in correction parameter 50 shrinkage parameters 52 and extensograph parameter 54 be illustrated.
Fig. 3 (1) is the table for indicating an example of shrinkage parameters 52.This is the yarn property of elastomeric yarn 14 according to Fig.2,
Consider shrinking percentage when elastomeric yarn 14 is shunk, the correcting value of delivering mechanism 34 is found out to each range into tension and is obtained
's.The shrinkage parameters 52 are greater than braiding caused by buffer arm 40 in the tension that enters for the elastomeric yarn 14 that tension sensor 46 detects
It is used in the case where tension.That is, the tension for being applied to elastomeric yarn 14 reduces and receives after elastomeric yarn 14 is sent out by delivering mechanism 34
Contracting, therefore in order to act the yarn amount of elastomeric yarn 14 with delivering mechanism 34 to positive side using shrinkage parameters 52 close to theoretical value
Mode is corrected, and increases the sendout of elastomeric yarn 14.For example, the theoretical value of the elastomeric yarn 14 in needle spacing is 8mm, school
In the case that positive quantity is decided to be+2%, delivering mechanism 34 is controlled so as to send out the elastomeric yarn 14 of 8.16mm.
Fig. 3 (2) is the table for showing an example of extensograph parameter 54.This is the yarn property of the elastomeric yarn 14 shown according to fig. 2
Consider extensibility when elastomeric yarn 14 stretches, the correcting value of delivering mechanism 34 is found out to each range into tension and is obtained
's.The extensograph parameter 54 is less than braiding caused by buffer arm 40 in the tension that enters for the elastomeric yarn 14 that tension sensor 46 detects
It is used in the case where tension.That is, the tension for being applied to elastomeric yarn 14 becomes larger and draws after elastomeric yarn 14 is sent out by delivering mechanism 34
It stretches, therefore in order to act the yarn amount of elastomeric yarn 14 with delivering mechanism 34 to negative side using extensograph parameter 54 close to theoretical value
Mode is corrected, and reduces the amount for sending out elastomeric yarn 14.For example, the theoretical value of the elastomeric yarn 14 in needle spacing is 8mm, correction
In the case that amount is decided to be -2%, delivering mechanism 34 is controlled so as to send out the elastomeric yarn 14 of 7.84mm.
It send yarn to handle about the elastomeric yarn 14 when weaving, is illustrated using the flow chart of Fig. 4.
It starts to process in step sl first.In step s 2, using tension sensor 46, measurement elastomeric yarn 14, which enters, to be sent
Enter tension before mechanism 34 out.Tension sensor 46 is for example measured every 1ms in the specified interval of woven stitch row
The tension of elastomeric yarn 14.If the measurement of the tension in specified interval terminates, the average tension in the section is calculated.Thus
It can obtain with high accuracy into tension.
It should be noted that the specified interval of woven stitch row is also possible to 1 row, but in woven stitch cross
Weaving (Knitting the enters り) section of column and the tension for weaving elastomeric yarn 14 on (Knitting goes out) section are unstable, therefore preferably for example will be in addition to
It is woven into section and weaves position other than section as specified interval.In addition, for example finding out every 2~3 rows at this
The average value for the tension that the specified interval of sample is found out can be realized more stable braiding if being averaged to these tension values.
Into the measurement of tension, the decision of correcting value based on correcting value determining means 48 etc. is in actual hosiery item
It is carried out when braiding, even if the implementation of the coil length routine carried out before actually braiding in order to carry out sitch cam contraposition
When, it, also can be by actually compiling by carrying out measurement, the decision of correcting value based on correcting value determining means 48 etc. into tension
The 1st row when knitting carries out conveying capacity correction.
Then, knitting tension is obtained in step s3.Knitting tension is by torque generator 38 by being applied to buffer arm 40
Torque determine.In the present embodiment, is set in such a way that knitting tension is fixed on such as 20gf or 25gf and be applied to buffer arm
40 torque.Knitting tension is matched with the characteristic of elastomeric yarn 14 ready for use or the hosiery item woven and is determined.
In addition, knitting tension can also be not fixed, and matches and can be changed with being woven into or weaving, weave position etc..
In step s 4, the size into the knitting tension in tension and step S3 in step S2 is compared.?
S6 is entered step if being greater than knitting tension into tension in step S5.In step S6, if elastomeric yarn 14 is more than delivering mechanism 34
Then tension reduce and shrinks, therefore correcting value determining means 48 using correction parameter 50 shrinkage parameters 52, determine with enter open
The correcting value of the matched delivering mechanism 34 of power.Subsequently into step S7, control unit 36 is sent using determined correcting value
The control of mechanism 34 out.
In step s 9, S10 is entered step if being less than knitting tension into tension.In step slo, if elastomeric yarn 14
More than delivering mechanism 34, then tension becomes larger and stretches, therefore correcting value determining means 48 uses the extensograph parameter of correction parameter 50
54, it determines and the correcting value into the matched delivering mechanism 34 of tension.Subsequently into step S7, control unit 36 is with the school of decision
The control of positive quantity progress delivering mechanism 34.
Step S11 is the situation identical with knitting tension into tension, does not need expressly to use correction parameter 50.So
After enter step S7, the control of delivering mechanism 34 is carried out without correction.It finally enters step S8 and ends processing.
The angle displacement of buffer arm 40 can be detected using angular transducer 44.It is slow before being woven according to 1 row
The difference of the angle of arm 40 and the angle of the buffer arm 40 after 1 row braiding is rushed, can find out makes in 1 row
Error between the yarn amount of the elastomeric yarn 14 of the theoretical value and actual use of the yarn amount of elastomeric yarn 14.1 row is compiled
The angle of buffer arm 40 before knitting can and the releasing of the elastomeric yarn 14 based on delivering mechanism 34, unrolling with defined angle
Matching.
After 1 row weaves, calculate the error of the yarn amount between theoretical value, in next row with
The mode that the error can be absorbed carries out loop density correction.Thus it enables that the yarn of elastomeric yarn 14 is long closer to theoretical value.
2 > of < embodiment
In the present embodiment, in the case where the size for entering tension and knitting tension has differences, buffer arm 40 is carried out
Direct torque and the case where this both sides of the control of delivering mechanism 34 be illustrated.
The elastomeric yarn 14 that measures to tension sensor 46 of correcting value determining means 48 first enters tension and buffer arm 40
Generated knitting tension is compared, and finds out the correcting value of the direct torque of buffer arm 40 to reduce the difference.According to
The correcting value, control unit 36 control torque generator 38 and control the torque of buffer arm 40.But if make turning for buffer arm 40
Square significantlys change, then knitting tension changes each row, therefore does not preferably change the torque of buffer arm 40 substantially.Therefore
The direct torque of buffer arm 40 is not only carried out, but also as in Example 1,48 pairs of correcting value determining means enter tension and braiding
The size of tension is compared, and determines the correcting value of the control for delivering mechanism 34.In this case, buffer arm 40 can be reduced
Direct torque and delivering mechanism 34 conveying control respective correcting value.
In above-described embodiment, illustrate preferably to find out yarn property in the elastomeric yarn 14 of actual use, but in elastomeric yarn
In the identical situation of 14 batch or even if yarn amount there is a situation where that deviation slightly can also allow that is inferior, can also arbitrarily make
With the yarn property for the elastomeric yarn 14 having been achieved with.
Claims (5)
1. a kind of yarn-feeding device of the elastomeric yarn in straight-bar machines, has：
Delivering mechanism is sent out elastomeric yarn to yarn component using roller based on the weave data used in loom body；
Buffer arm accumulates the yarn sent out from the delivering mechanism and swing freely intermediate；
Torque generator, it is right in order to make the knitting tension of the elastomeric yarn from delivering mechanism until to yarn component become specified value
Buffer arm applies torque；And
Control unit calculates the theoretical value of coil length woven by each knitting needle, with the movement to yarn component synchronously into
Necessity of row elastomeric yarn send the mode of yarn to control delivering mechanism,
The yarn-feeding device of elastomeric yarn in the straight-bar machines is characterised by comprising：
Tension sensor configures in the upstream side of the roller, measures the entrance that the tension of elastomeric yarn enters as elastomeric yarn to roller
Tension；
Correction parameter is used in order to which the yarn property according to elastomeric yarn makes coil length close to the correction of theoretical value；And
Correcting value determining means, to entering caused by tension and the buffer arm for the elastomeric yarn of tension sensor measurement
The size of knitting tension is compared, and based on comparative result, determines the correcting value for delivering mechanism according to the correction parameter,
The correction parameter has the increased correcting value of yarn amount of the elastomeric yarn when entering tension and being greater than knitting tension, and has
The correcting value of the yarn amount reduction of elastomeric yarn when being less than knitting tension into tension, the correcting value determining means is according to the correction
Parameter determines correcting value appropriate,
Described control unit uses the control for by correcting value that the correcting value determining means determines and carrying out delivering mechanism.
2. the yarn-feeding device of the elastomeric yarn in straight-bar machines according to claim 1, which is characterized in that
The correction parameter has the shrinkage parameters that find out of yarn property and extensograph parameter by elastomeric yarn,
The correcting value determining means determines correcting value using shrinkage parameters when entering tension and being greater than knitting tension, is entering
Correcting value is determined using extensograph parameter when tension is less than knitting tension.
3. the yarn-feeding device of the elastomeric yarn in straight-bar machines according to claim 1 or 2, which is characterized in that
Enter tension about the elastomeric yarn measured by the tension sensor, calculates and use measures in specified interval
The average value into tension value.
4. the yarn-feeding device of the elastomeric yarn in straight-bar machines described in any one of claim 1 to 3, which is characterized in that
Described control unit in order to absorb with woven by 1 row after the buffer arm find out 1 of angle displacement
The error between theoretical value in the braiding of row, and carry out the correction of the loop density in next row.
5. the yarn-feeding device of the elastomeric yarn in straight-bar machines according to any one of claims 1 to 4, which is characterized in that
What the correcting value determining means found out the elastomeric yarn of tension sensor measurement enters tension and the buffer arm institute
Difference between the knitting tension of generation determines the correcting value of the torque for buffer arm in a manner of reducing the difference, and right
Elastomeric yarn is compared into tension with the size of knitting tension, based on comparative result, according to correction parameter decision pair
In the correcting value of delivering mechanism,
Described control unit by by the correcting value determining means determine for the torque of buffer arm correcting value and carry out
The adjustment of the torque of the buffer arm, and the control of delivering mechanism is carried out using the correcting value for delivering mechanism.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017092655A JP6498232B2 (en) | 2017-05-08 | 2017-05-08 | Yarn feeder for elastic yarn in flat knitting machine |
| JP2017-092655 | 2017-05-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108866785A true CN108866785A (en) | 2018-11-23 |
| CN108866785B CN108866785B (en) | 2020-04-10 |
Family
ID=62134133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810425310.6A Active CN108866785B (en) | 2017-05-08 | 2018-05-07 | Elastic yarn feeding device in flat knitting machine |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP3401428B1 (en) |
| JP (1) | JP6498232B2 (en) |
| KR (1) | KR101954658B1 (en) |
| CN (1) | CN108866785B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110760989A (en) * | 2019-11-08 | 2020-02-07 | 西安工程大学 | Flat knitting machine spandex yarn controller |
| CN111607890A (en) * | 2020-05-29 | 2020-09-01 | 江南大学 | Weaving method of bare ammonia plated flat knitted fabric and yarn feeding device thereof |
| CN113584704A (en) * | 2021-08-20 | 2021-11-02 | 针知运纺织科技(上海)有限公司 | Weft insertion yarn guide system of computer flat knitting machine |
| CN114164551A (en) * | 2021-12-16 | 2022-03-11 | 桐乡市桐诚科技有限公司 | Computerized flat knitting machine yarn feeding detection device and yarn feeding control method thereof |
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| CN1199434A (en) * | 1995-10-12 | 1998-11-18 | 纳幕尔杜邦公司 | Process and apparatus for knitting fabric with non-elastic yarn and bare elastomeric yarn and sweater knit fabric construction |
| CN1671902A (en) * | 2002-07-24 | 2005-09-21 | 株式会社岛精机制作所 | Yarn feeding device for flat knitting machine |
| CN1777712A (en) * | 2003-04-18 | 2006-05-24 | 株式会社岛精机制作所 | Knitting method and system using elastic yarn |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110760989A (en) * | 2019-11-08 | 2020-02-07 | 西安工程大学 | Flat knitting machine spandex yarn controller |
| CN111607890A (en) * | 2020-05-29 | 2020-09-01 | 江南大学 | Weaving method of bare ammonia plated flat knitted fabric and yarn feeding device thereof |
| CN111607890B (en) * | 2020-05-29 | 2022-02-15 | 江南大学 | Weaving method of bare ammonia plated flat knitted fabric and yarn feeding device thereof |
| CN113584704A (en) * | 2021-08-20 | 2021-11-02 | 针知运纺织科技(上海)有限公司 | Weft insertion yarn guide system of computer flat knitting machine |
| CN113584704B (en) * | 2021-08-20 | 2022-12-02 | 针知运纺织科技(上海)有限公司 | Weft insertion yarn guide system of computer flat knitting machine |
| CN114164551A (en) * | 2021-12-16 | 2022-03-11 | 桐乡市桐诚科技有限公司 | Computerized flat knitting machine yarn feeding detection device and yarn feeding control method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2018188771A (en) | 2018-11-29 |
| KR20180123442A (en) | 2018-11-16 |
| CN108866785B (en) | 2020-04-10 |
| KR101954658B1 (en) | 2019-03-06 |
| JP6498232B2 (en) | 2019-04-10 |
| EP3401428B1 (en) | 2020-06-10 |
| EP3401428A1 (en) | 2018-11-14 |
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