CN108560130B - Double rib warp loom electronics horizontal movement compensating control method - Google Patents
Double rib warp loom electronics horizontal movement compensating control method Download PDFInfo
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- CN108560130B CN108560130B CN201810306956.2A CN201810306956A CN108560130B CN 108560130 B CN108560130 B CN 108560130B CN 201810306956 A CN201810306956 A CN 201810306956A CN 108560130 B CN108560130 B CN 108560130B
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- needle bed
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- guiding chase
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B23/00—Flat warp knitting machines
- D04B23/02—Flat warp knitting machines with two sets of needles
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Abstract
The present invention relates to a kind of double rib warp loom electronics horizontal movement compensating control methods, characterized in that the following steps are included: each yarn guiding chase comb of two-needle bar is worked line projection to two-needle bar woven flat by (1), generates every projection line for guide being combed the upper sley point guide eyelit heart；(2) two needle beds of front and back are obtained and weave wire spacing；(3) it obtains reduction distance when guide comb swings to farthest needle bed litzendraht wire and reduces distance when swinging to nearest needle bed litzendraht wire；(4) when obtaining the yarn guiding chase comb and swinging to apart from farthest needle bed litzendraht wire, the reduction deviation for needing to compensate is obtained；(5) step (3) to step (4) are repeated, calculates bias compensation value of all yarn guiding chase combs of double rib warp loom on opposite needle bed litzendraht wire；(6) every that yarn guiding chase comb is compensated timing.The present invention carries out accurate active error compensation for every different contracting shift errors caused by push rod deflects yarn guiding chase comb respectively.
Description
Technical field
The present invention relates to a kind of double rib warp loom electronics horizontal movement compensating control methods, belong to warp knit equipment electromechanical integration
Field of intelligent control technology.
Background technique
Double rib warp loom has more yarn guiding chase comb and two needle beds being parallel to each other, when making common product, one
As only centrally located interval comb need the band yarn on former and later two needle beds, and be located at preceding needle bed or positioned at rear needle bed
Guide combs the not band yarn on opposite needle bed, but in braiding special process, it is sometimes desirable to positioned at preceding needle bed or leading positioned at rear needle bed
Yarn comb will not only swing in opposite needle bed, or even require in opposite needle bed band yarn or lopping, and this requires need swinging in front/rear two
A needle bed or require in a front/back two needle beds will carry out the yarn guiding chase comb of band yarn, when passing through front/rear two needle beds,
Sley point can be located at the middle position of groove pin needle gage and keep enough appearance yarn gaps, just be avoided that side swipe needle or broken yarn, and suitable
Benefit completes braid movement.
But all yarn guiding chase combs of double rib warp loom, and push yarn guiding chase comb transverse shifting push rod, be all with
The mode for being parallel to front/rear needle bed is installed, this results in being located at preceding needle bed or is swinging in opposite direction positioned at the yarn guiding chase comb of rear needle bed
After needle bed, no matter whether opposite needle bed band yarn, since the deflection angle of push rod occurs, necessarily make yarn guiding chase comb in opposite needle
Moved on bed toward heading contracting, and deflection angle is bigger or front and back needle bed between gauge it is bigger, this contracting shifting amount is also got over
Greatly, when contracting, which moves distance, is greater than the safety braiding allowable error upper limit, this contracting shifting must be evaded or is compensated.
Tradition machinery formula transverse-moving mechanism can generally be adopted to reduce this contracting shift error generated due to push rod deflection angle
Reduce deflection angle with lengthening push rod, i.e., in the case where needing to generate identical arc length and requiring, by increasing radius length to reduce
Angle, and then reduce contracting shift error.Although this method can reduce the guide chase comb position contracting generated by guide rod deflection and move, can not
It is inherently eliminated this error, belongs to passive type and lowers error and Active Compensation can not be carried out to error；And work as front/rear needle
When the gauge of bed increases, the reduction amount of this error just be cannot keep, and guide comb is caused to hold the too small appearance in yarn gap in opposite needle bed
Easy broken yarn wipes needle, can reduce product quality and speed of production, additionally, due to the push rod lengthened is used, will lead to machine entirety
Length increases, and yarn guiding chase comb tension spring lengthens, and mechanical mechanism is more complicated, is unfavorable for the high speed production of machine.
How modern times based in the double rib warp loom of electronics horizontal movement, move the contracting as caused by push rod deflection angle and miss
Difference carries out drop difference or evades, and yet there are no data and document occurs.
Summary of the invention
The purpose of the present invention is overcoming the deficiencies in the prior art, a kind of double rib warp loom electronics horizontal movement benefit is provided
Control method is repaid, based on the characteristic that electronics horizontal movement system can be independently controlled the transverse motion of each yarn guiding chase comb, for
Every different contracting shift errors caused by push rod deflects yarn guiding chase comb, carry out accurate active error compensation respectively, thus
It realizes and is not increasing push rod length, and can also be kept by identical algorithm accurate main after the gauge for changing front/rear needle bed
Dynamic compensation.
According to technical solution provided by the invention, a kind of double rib warp loom electronics horizontal movement compensating control method, feature
It is, comprising the following steps:
(1) each yarn guiding chase comb of two-needle bar is worked into line projection to two-needle bar woven flat, generated every the upper guide of guide comb
The projection line of the needle guide eyelit heart；
(2) the span E that gauge H and latch needles needle between the preceding needle bed of double rib warp loom and rear needle bed are hooked is obtained, is calculated
Two needle bed of front and back weaves wire spacing D=H+E；
(3) a certain mandril length L that guide is combed and the yarn guiding chase comb active line are obtained in two-needle bar woven flat
Distance d1 of the upper projection line away from farthest needle bed litzendraht wire, the distance d2=D-d1 away from nearest needle bed litzendraht wire, guide comb are swung
Reduction distance calculation formula is Δ L1=L × (1-cos (arcsin (d1L))), the guide comb pendulum when to farthest needle bed litzendraht wire
Reduction distance calculation formula is Δ L2=L × (1-cos (arcsin (d2L))) when moving nearest needle bed litzendraht wire；
(4) it to be the yarn guiding chase comb to stylus alignment line near the needle bed litzendraht wire of this yarn guiding chase comb, then can be obtained
When the yarn guiding chase comb is swung to apart from farthest needle bed litzendraht wire, the reduction deviation calculation formula that needs to compensate are as follows: Δ L=L
×(cos(arcsin(d2L))-cos(arcsin((D-d2)/L)))；
(5) operation of step (3) to step (4) is repeated, until all yarn guiding chase combs for calculating double rib warp loom exist
Distance is farthest, i.e., bias compensation value Δ L on opposite needle bed litzendraht wire；
(6) every that yarn guiding chase comb is compensated timing are as follows: in each technique row, when into the needle back section of opposite needle bed,
It is traversing apart from upper increase Δ L implementation deviation compensation in technique, when entering the needle back section to needle needle bed, in the traversing distance of technique
Upper reduction Δ L, to cancel the deviation compensation superposition on opposite needle bed.
Further, the projection that certain yarn guiding chase comb active line is formed in two-needle bar woven flat in the step (1)
Line, when being both this yarn guiding chase comb and its mandril same straight line of coexistence, the projection of guide eyelit heart line on this yarn guiding chase comb
Line.
Further, in the step (4), as d2=0, d1=D indicates the projection line of this yarn guiding chase comb active line
It is overlapped with nearest needle bed litzendraht wire, this sley bar is on farthest needle bed litzendraht wire at this time, i.e., there are maximum deviations on opposite needle bed
Offset Δ Lmax=L × (1-cos (arcsin (DL))).
Further, in the step (4), as d1=d2, i.e. d1=d2=D2 indicates this yarn guiding chase comb active line
Projection line be overlapped with the center line of preceding needle bed and rear needle bed, reduction distance of this sley bar on two needle bed litzendraht wires at this time
There is minimum on opposite needle bed after carrying out the sley bar to stylus alignment with any needle bed litzendraht wire in Δ L1=Δ L2
Compensate deviation Δ Lmin=0, i.e., without compensation.
Further, in the step (4) using nearest needle bed litzendraht wire as certain yarn guiding chase comb to stylus alignment line, be
Indicate that needle bed litzendraht wire carries out for lubber-line to needle before the yarn guiding chase comb of nearby needle bed, and close to the yarn guiding chase comb of rear needle bed
Later needle bed litzendraht wire is that the yarn guiding chase comb that lubber-line is carried out to needle, on preceding needle bed and rear needle bed center line can be with any needle
Bed litzendraht wire is that lubber-line is carried out to needle.
Further, the opposite needle bed in the step (6) with to needle needle bed, if needle bed is school to certain yarn guiding chase comb in the past
Directrix is carried out to needle, then preceding needle bed litzendraht wire is this yarn guiding chase comb to needle needle bed, and rear needle bed is pair of this yarn guiding chase comb
To needle bed, if needle bed litzendraht wire is that lubber-line is carried out to needle after this yarn guiding chase comb, rear needle bed is this yarn guiding chase comb
To needle needle bed, preceding needle bed is the opposite needle bed of this yarn guiding chase comb.
Compared with prior art, the present invention having the following advantages that and effect:
(1) double rib warp loom electronics horizontal movement compensating control method of the present invention, can based on electronics horizontal movement control system
, can be under the premise of each yarn guiding chase comb mechanical component parameter be consistent to every characteristic that yarn guiding chase comb is independently controlled, needle
Precision runout compensation is carried out to every deviation that yarn guiding chase comb is different, can thoroughly solve to increase mandril length by unified,
Or the problem of mechanical drop difference method such as different top pole length can not be inherently eliminated traversing deviation is customized for different yarn guiding chase combs；
(2) double rib warp loom electronics horizontal movement compensating control method of the present invention, by establish bias compensation value Δ L with
Mandril length L, two-needle bar gauge H, latch needles needle hook width E and guide comb relatively joins the mechanical structures such as needle needle bed distance d2
Several mathematical models, and cover two boundary conditions of d2=0 and d2=H+E, model algorithm is succinct, and it is adaptable, occupy fortune
It is few to calculate device resource, is realized convenient for control system；
(3) double rib warp loom electronics horizontal movement compensating control method of the present invention is not changing mechanical component physics ginseng
Number does not increase on the basis of control system hardware cost, it can be achieved that realizing all to each traversing accurate compensation yarn guiding chase comb
Yarn guiding chase comb crosses pincushion yarn in the optimum position of the front/rear needle bed of double rib warp loom, can obviously reduce broken yarn, improves production of machinery
Speed improves fabric quality and booting efficiency.
Detailed description of the invention
Fig. 1 is each yarn guiding chase comb of two-needle bar and front/rear needle bed relative position schematic diagram.
Fig. 2 is the traversing deviation compensation analysis chart of yarn guiding chase comb on any position.
Fig. 3 is maximum traversing deviation compensation analysis chart.
Fig. 4 is minimum traversing deviation compensation analysis chart.
Specific embodiment
Below with reference to specific attached drawing, the invention will be further described.
Double rib warp loom electronics horizontal movement compensating control method of the present invention, including following procedure:
(1) each yarn guiding chase comb of two-needle bar and front/rear needle bed relative position as shown in Figure 1, have GB1, GB2, GB3, GB4,
GB5 is totally 5 yarn guiding chase comb, every guide pin hole line of centres on yarn guiding chase comb, the projection in two-needle bar woven flat 6
Line, respectively GB1 projection line 1, GB2 projection line 2, GB3 projection line 3, GB4 projection line 4, GB5 projection line 5,7 are preceding needle bed tongue
Needle, 8 be rear needle bed latch needles；
(2) the gauge width H between preceding needle bed and rear needle bed, the latch needles syringe needle span length E on two-needle bar are obtained；Such as figure
Shown in 2- Fig. 4, former 7 needle central point line of needle bed latch needles is preceding needle bed litzendraht wire 9, later 8 needle central point of needle bed latch needles
Line is rear needle bed litzendraht wire 10, and the distance between preceding needle bed litzendraht wire 9 and rear needle bed litzendraht wire 10 are D, then has D=H+E；
(3) as shown in Fig. 2, obtain the mandril 12 of yarn guiding chase comb GB2 length L and GB2 projection line 2 and it is farthest after
The distance between the distance between needle bed litzendraht wire 10 d1, GB2 projection line 2 and nearest preceding needle bed litzendraht wire 9 d2 then know to work as and lead
Yarn sley bar GB2 is swung to and preceding needle bed litzendraht wire 9 using mandril one end as the center of circle from the position for being total to straight line with GB2 projection line 2 respectively
And rear needle bed litzendraht wire 10 is when intersecting, what yarn guiding chase comb GB2 reduced along preceding needle bed litzendraht wire 9 and rear needle bed litzendraht wire 10 respectively
Distance is Δ L1 and Δ L2, there is Δ L1=L × (1-cos (arcsin (d1L))), Δ L2=L × (1-cos (arcsin respectively
(d2L))), D=d1+d2；
(4) to be to stylus alignment line, i.e., on yarn guiding chase comb GB2 near the preceding needle bed litzendraht wire 9 of yarn guiding chase comb GB2
Sley point pin hole line and preceding needle bed litzendraht wire 9 are total to straight line, and it is that principle is calibrated that sley point, which is located at adjacent latch needles middle position,
After needle, when yarn guiding chase comb GB2 is using one end of mandril as on centre swinging to the farthest rear needle bed litzendraht wire 10 of distance, guide
Sley bar GB2 with respect to oneself to stylus alignment line, i.e., before needle bed litzendraht wire 9, the distance of contracting shifting is Δ L on rear needle bed litzendraht wire 10
=Δ L1- Δ L2 can then calculate yarn guiding chase comb GB2 after completing calibration to needle, after swinging to opposite needle bed i.e. when needle bed,
It needs actively toward the traversing distance of the opposite direction compensation of reduction are as follows: Δ L=L × (cos (arcsin (d2L))-cos (arcsin
((D-d2)/L)))；
(5) repeat above step (3) to step (4) totally 5 times, can calculate 5 yarn guiding chase comb GB1, GB2, GB3,
After each comfortable completion of GB4, GB5 is to stylus alignment, the traversing distance of opposite direction compensation is needed on respective opposite needle bed；
(6) needle bed 7 is to needle needle bed before sley bar GB2, then it swings in opposite needle bed in each craft woven row
Afterwards when the traversing section of the needle back of needle bed 8, needs to increase traversing distance, delta L toward tail direction, swing back when leaving opposite needle bed to needle
Before needle bed when the traversing section of the needle back of needle bed 7, need to reduce traversing distance, delta L toward heading；
As shown in figure 3, then yarn guiding chase comb GB1 exists when the GB1 projection line 1 of yarn guiding chase comb is overlapped with preceding needle bed litzendraht wire 9
Possess maximum traversing offset in all yarn guiding chase combs, i.e., in step (4) when d2=0, d1=D, then yarn guiding chase comb GB1 is in rear needle
Bed 8 has maximum traversing uncompensation distance Δ Lmax=L × (1-cos (arcsin (DL)))；
As shown in figure 4, when the gauge middle line 11 of the GB3 projection line 3 of yarn guiding chase comb and preceding needle bed and rear needle bed coincides,
Then yarn guiding chase comb GB3 possesses minimum traversing offset in all yarn guiding chase combs, i.e., in step (4) when d2=d1, then guide is combed
Comb GB3 no matter before needle bed litzendraht wire 9, or rear needle bed litzendraht wire 10 is as to stylus alignment line, then its on two needle beds all
There is minimum traversing uncompensation distance Δ Lmin=0, i.e., it is on two needle beds without compensation；
Sometimes two-needle bar produces very thin fabric, i.e., when gauge H value is minimum with respect to mandril length L, i.e., all
The traversing offset Δ L of maximum in sley barmaxWhen < ε (ε is that machine generates permission maximum deviation), electronics horizontal movement system can be used as
Exempt the judging basis of compensation calculation.
Claims (5)
1. a kind of double rib warp loom electronics horizontal movement compensating control method, characterized in that the following steps are included:
(1) each yarn guiding chase comb of two-needle bar is worked into line projection to two-needle bar woven flat, generated every sley point on yarn guiding chase comb
The projection line of the guide eyelit heart；
(2) the span E that gauge H and latch needles needle between the preceding needle bed of double rib warp loom and rear needle bed are hooked is obtained, front and back is calculated
Two needle beds weave wire spacing D=H+E；
(3) a certain mandril length L on yarn guiding chase comb and the yarn guiding chase comb active line are obtained in two-needle bar woven flat
Distance d1 of the projection line away from farthest needle bed litzendraht wire, the distance d2=D-d1 away from nearest needle bed litzendraht wire, the yarn guiding chase comb are swung
Reduction distance calculation formula is Δ L1=L × (1-cos (arcsin (d1/L))), the yarn guiding chase comb when to farthest needle bed litzendraht wire
Reduction distance calculation formula is Δ L2=L × (1-cos (arcsin (d2/L))) when swinging to nearest needle bed litzendraht wire；
(4) to be the yarn guiding chase comb to stylus alignment line near the needle bed litzendraht wire of this yarn guiding chase comb, then it can obtain this and lead
When yarn sley bar is swung to apart from farthest needle bed litzendraht wire, the reduction deviation calculation formula that needs to compensate are as follows: Δ L=L ×
(cos(arcsin(d2/L))-cos(arcsin((D-d2)/L)))；
(5) operation for repeating step (3) to step (4), until calculating all yarn guiding chase combs of double rib warp loom in opposite direction
Bias compensation value Δ L on needle bed litzendraht wire；
(6) every that yarn guiding chase comb is compensated timing are as follows: in each technique row, when into the needle back section of opposite needle bed, in work
Skill is traversing to implement deviation compensation apart from upper increase Δ L, when entering the needle back section to needle needle bed, above subtracts in the traversing distance of technique
Few Δ L, to cancel the deviation compensation superposition on opposite needle bed；
Opposite needle bed in the step (6) with to needle needle bed, if needle bed is that lubber-line is carried out to needle to certain yarn guiding chase comb in the past,
Then preceding needle bed is this yarn guiding chase comb to needle needle bed, and rear needle bed is the opposite needle bed of this yarn guiding chase comb, if this guide is combed
Needle bed litzendraht wire is that lubber-line is carried out to needle after comb, then rear needle bed is this yarn guiding chase comb to needle needle bed, and preceding needle bed is should
The opposite needle bed of yarn guiding chase comb.
2. double rib warp loom electronics horizontal movement compensating control method as described in claim 1, it is characterized in that: the step (1)
In the projection line that is formed in two-needle bar woven flat of certain yarn guiding chase comb active line, be both this yarn guiding chase comb and its mandril
Coexist same straight line when, the projection line of guide eyelit heart line on this yarn guiding chase comb.
3. double rib warp loom electronics horizontal movement compensating control method as described in claim 1, it is characterized in that: the step (4)
In, as d2=0, d1=D indicates that the projection line of this yarn guiding chase comb active line is overlapped with nearest needle bed litzendraht wire, at this time should
Sley bar on farthest needle bed litzendraht wire, i.e., there are maximum deviation offset Δ L on opposite needle bedmax=L × (1-cos
(arcsin(D/L)))。
4. double rib warp loom electronics horizontal movement compensating control method as described in claim 1, it is characterized in that: the step (4)
In, as d1=d2, i.e. d1=d2=D/2 indicates the projection line and preceding needle bed and rear needle bed of this yarn guiding chase comb active line
Center line is overlapped, at this time reduction distance, delta L1=Δ L2 of this yarn guiding chase comb on two needle bed litzendraht wires, when with any needle
After bed litzendraht wire carries out to stylus alignment the yarn guiding chase comb, all there is minimum compensation deviation Δ L on opposite needle bedmin=
0, i.e., without compensation.
5. double rib warp loom electronics horizontal movement compensating control method as described in claim 1, it is characterized in that: the step (4)
It is middle using nearest needle bed litzendraht wire as certain yarn guiding chase comb to stylus alignment line, be to indicate before the nearby yarn guiding chase comb of needle bed
Needle bed litzendraht wire is that lubber-line is carried out to needle, and needle bed litzendraht wire is that lubber-line carries out pair after the yarn guiding chase comb of rear needle bed
Needle, the yarn guiding chase comb on preceding needle bed and rear needle bed center line can be carried out using any needle bed litzendraht wire as lubber-line to needle.
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| CN201810306956.2A CN108560130B (en) | 2018-04-08 | 2018-04-08 | Double rib warp loom electronics horizontal movement compensating control method |
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| CN108560130B true CN108560130B (en) | 2019-08-13 |
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| CN114414226B (en) * | 2021-12-29 | 2024-03-12 | 常德纺织机械有限公司 | Method for measuring crank connecting rod group consistency |
| CN114859791A (en) * | 2022-05-20 | 2022-08-05 | 常州市赛嘉机械有限公司 | Ultra-large loom wide lattice spacing control system and control method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4215716C2 (en) * | 1992-05-13 | 1994-06-09 | Mayer Textilmaschf | Control device for the laying rail offset in warp knitting machines |
| JP2000328408A (en) * | 1999-05-21 | 2000-11-28 | Nippon Mayer Ltd | Control of driving unit in warp knitting machine |
| CN100537873C (en) * | 2007-06-11 | 2009-09-09 | 江南大学 | A kind of linear servo control guide bar shogging system of warp knitting machine |
| CN203513956U (en) * | 2013-04-26 | 2014-04-02 | 常州市武进五洋纺织机械有限公司 | Warp knitting machine tension force compensation device |
| CN204434895U (en) * | 2015-01-08 | 2015-07-01 | 卡尔迈耶（中国）有限公司 | Two Jacquard tension compensating mechanism |
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