CN101338477B - Counting method of travel amount of flat knitting machine head corresponding to position of needle groove - Google Patents
Counting method of travel amount of flat knitting machine head corresponding to position of needle groove Download PDFInfo
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- CN101338477B CN101338477B CN2008100213642A CN200810021364A CN101338477B CN 101338477 B CN101338477 B CN 101338477B CN 2008100213642 A CN2008100213642 A CN 2008100213642A CN 200810021364 A CN200810021364 A CN 200810021364A CN 101338477 B CN101338477 B CN 101338477B
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Abstract
The invention relates to a counting method of the transportation load of a flat knitting machine head with the one-to-one correspondence with a needle trough position. A machine tool and a knitting machine head are installed on a flat knitting machine. A counting rack is arranged on both sides of the machine tool. The counting rack corresponding to one side of a moving needle plate is linked withthe side of the moving needle via a connecting plate. Three photoelectric sensors are arranged in parallel on the flat knitting machine head corresponding to the counting rack, so a counting gear on the counting rack moves between a pair of the luminescent tube and the photic tube of the photoelectric sensor to respectively generate a counting signal corresponding to the needle trough on the needle plate on both sides of the counting gear. The space width of the counting gear B is equal to 3t. The mounting distance between two photoelectric sensors and a standard photoelectric sensor respectively is that L1 is equal to nB+1 and L2 is equal to nB+2t. The counting method has the advantage that the signals of location counting and the signals of displacement direction have one-to-one correspondence with the needle troughs, thus facilitating a computer for controlling. Once the photoelectric sensor goes wrong, an error can be judged and eliminated at once. In addition, the sensor can sense the location accurately, and the cost in manufacturing and mounting is low.
Description
Technical field
The present invention relates to computer flat-bed knitting machine, relate in particular to one one kinds with the needle tray position method of counting of flat knitting machine head transportation load one to one.
Background technology
Flat braiding machine is when spending the type braiding, and the braiding controlling mechanism on the knitting head will carry out the needle selection action to the knitting needle in the corresponding needle tray on the needle-bar, and this just need measure the transportation load of flat knitting machine head on needle-bar, to determine the position of selected knitting needle.
At present flat knitting machine head is achieved in that at needle-bar along on the direction of flat knitting machine head operation (promptly with needle-bar on needle tray orientation) the counting tooth bar being set in the measurement of the transportation load on the needle-bar, needle tray on this counting tooth bar and the needle-bar has corresponding relation, electromagnetic proximity switch is through each the counting tooth on the counting tooth bar time, produce the magnetic induction signal, and be transferred to computer and count, to determine the knitting head run location.
The next method of determining the flat knitting machine head run location of existing this employing electromagnetic proximity switch, during needle selection, pairing needle selection position is a zone, promptly determine that by the counting of electromagnetic proximity switch the position that pressing plate is suppressed selection piece is a zone, rather than the position of a corresponding needle tray.200820036691.0) and " a kind of knitting needle combination that is applicable to the electromagnetic needle selection " (application number: job requirement 200820036690.6) that matches so the method for counting of existing this knitting head transportation load can not adapt to this case applicant at " a kind of knitting control system that is applicable to electromagnetic needle selection " that not long ago proposed (application number:.This braiding controlling mechanism and knitting needle combination do not have needle selecting cam and corresponding selection piece, and during needle selection, its needle selection position is corresponding to a certain needle tray position, and the counting of correspondence position must be corresponding one by one with the needle tray on the needle-bar during knitting head operation.Obviously, existing method of counting is the job requirement that can not satisfy this new knitting control system and knitting needle combination.
In addition, adopt electromagnetic proximity switch to determine that also there is following deficiency in the method for knitting head position: one, only comprise positional information near the signal that switch sent, do not comprise traffic direction information; Its two, electromagnetic proximity switch price height, the installation requirement height (because of the magnetic induction scope in 1 millimeter, so installation accuracy is also in millimeter), increased manufacturing cost.
Summary of the invention
The objective of the invention is to design and a kind ofly newly design knitting control system with this case applicant and knitting needle combination is that be complementary and the method for flat knitting machine head transportation load is measured in the corresponding needle tray of a kind of usefulness position of deficiency that overcome above-mentioned prior art.It is implemented by following technical proposals:
Needle-bar both sides along the flat knitting machine head traffic direction are provided with the counting tooth bar respectively, it is corresponding to the counting tooth bar and the interlock of this side activity needle plate of movable needle plate one side, 3 photoelectric sensors arranged side by side on the position of the corresponding counting of flat knitting machine head tooth bar, when flat knitting machine head moves, the counting tooth of counting on the tooth bar walked between a pair of luminous tube of each photoelectric sensor and light-receiving tube, produce the count signal that correspondence is counted needle tray position on the both sides needle plate of tooth position respectively, the space width of described counting tooth bar is B, B=3t, t is the needle tray spacing, above-mentioned side by side 3 photoelectric sensors, with its outermost one sidelight electric transducer is benchmark, if its Position Number is A0, all the other two photoelectric sensors are respectively A1 by Position Number from the close-by examples to those far off, A2, the then photoelectric sensor of A0 position and A1, the distance at its center of photoelectric sensor of A2 position is respectively: L (A0A
1), L (A0A
2), L (A0A
1)=nB+t, L (A0A
2)=nB+2t, wherein n=0,1,2 ... natural number.
Also can X photoelectric sensor more than 3 is arranged side by side, be X 〉=3, the space width B=Xt of described counting tooth bar, arranged side by side X photoelectric sensor, with its outermost one sidelight electric transducer is benchmark, if its Position Number is A0, all the other photoelectric sensors are followed successively by A1, A2 by Position Number from the close-by examples to those far off ... A
N, the then photoelectric sensor and the A of A0 position
NIts centre distance of the photoelectric sensor of position is L (A0A
N), L (A0A
N)=nB+N t, wherein N=1,2 ..., X-1, n=0,1,2 ... natural number.
Described movable needle plate is connected with the counting tooth bar of this side by a plate, realizes interlock.
Advantage of the present invention is: utilize at least three electromagnetic sensors and the corresponding relation of counting counting tooth on the tooth bar, not only can produce flat knitting machine head on needle-bar with needle tray position count signal one to one, also can produce the signal of direction of displacement, abundanter information is provided for the braiding machine computer, so that to its control.And, in case there is photoelectric sensor to make mistakes, just can make judgement immediately by the signal computer that it provides, be convenient to the timely eliminating of fault.In addition, photoelectric sensor is compared the position of induction with electromagnetic proximity switch very accurate, and want considerably cheaper, easy for installation, can reduce manufacturing cost.
Description of drawings
Fig. 1 is counting tooth bar, the scheme of installation of photoelectric sensor on flat braiding machine.
Fig. 2 is movable needle plate one side, needle plate and counting tooth bar interlock schematic diagram.
Fig. 3 is that move to left the successively count signal of the process of 1 space width and correspondence position of three photoelectric sensors is expressed.
Fig. 4 is that move to right the successively count signal of the process of 1 space width and correspondence position of three photoelectric sensors is expressed.
Fig. 5 is the A among Fig. 3
1, A
2The relative A of photoelectric sensor on the position
0After its installation site of photoelectric sensor had been moved 2 space widths and 3 space widths respectively on the position, three locational photoelectric sensors were expressed with the move to left count signal of the process of 1 space width B and correspondence position of knitting head.
Fig. 6 is the A among Fig. 3
1, A
2The relative A of photoelectric sensor on the position
0After its installation site of photoelectric sensor had been moved 2 space widths and 3 space widths respectively on the position, three locational photoelectric sensors were expressed with the move to right count signal of the process of 1 space width B and correspondence position of knitting head.
Fig. 7 is that move to left the successively count signal of the process of 1 space width and correspondence position of five photoelectric sensors is expressed.
Fig. 8 is that move to right the successively count signal of the process of 1 space width and correspondence position of five photoelectric sensors is expressed.
Among the figure, 10 tooth bars, 11 counting teeth, 20 photoelectric sensors, 30 needle-bars, 31 flat knitting machine heads, 32 movable needle plates, 33 needle trays, 34 fixing needle plates, 40 connecting plates.
The specific embodiment
Contrast Fig. 1 is provided with counting tooth bar 10 respectively in needle-bar 30 both sides, counting tooth bar 10 is placed along the flat knitting machine head traffic direction.Three photoelectric sensor 20 is installed on the flat knitting machine head 31 side by side, the position of its position corresponding counting tooth bar 10, when making the flat knitting machine head operation, the counting tooth of counting on the tooth bar walked between a pair of luminous tube of each photoelectric sensor 20 and light-receiving tube, produces the count signal of needle tray position on the needle plate of corresponding counting tooth position.
Contrast Fig. 2, corresponding to the counting tooth bar 10 of movable needle plate 32 1 sides, because of need moving when turning over needle knitting, and counting tooth bar 10 must keep one-to-one relationships with needle tray 33 on this side needle plate, so be connected with the needle plate of this side activity by a plate 40, with it interlock.The needle tray spacing of the some needle trays 33 on the needle plate is t, and its needle-bar opposite side fixedly needle tray on the needle plate distributes identical with it.
Contrast Fig. 3 has several rectangular teeths on the counting tooth bar 10, and its space width B is set to 3 times needle tray spacing, i.e. B=3t.3 its installation sites of photoelectric sensor are to be provided with like this, are benchmark as the photoelectric sensor (its Position Number is A0) with the leftmost side, and all the other two photoelectric sensors (its Position Number is respectively A1, A2) are respectively L (A0A with the distance of this reference light electric transducer
1), L (A0A
2).L(A0A
1)＝B+t；L(A0A
2)＝2B+2t。Adjacent two photoelectric sensor spacings are identical, all are B+t (being 4t).
When these 3 photoelectric sensors 20 move on needle-bar with knitting head, when overlapping as the center of the counting tooth 11 on the center of a photoelectric sensor 20 and the tooth bar 10, represent that the light that the luminous tube of this photoelectric sensor 20 sends is blocked, computer will be received the signal of " 0 ", not center as the counting tooth 11 on the center of photoelectric sensor 20 and the tooth bar 10 overlaps, then computer will be received the signal of " 1 ", and knitting head is just become by 3 binary arrays at the position count signal of a certain position of needle-bar like this.
Move left with knitting head as 3 photoelectric sensors 20, and initial position is shown in Fig. 3 a, the center of photoelectric sensor 20 overlaps with the center of a counting tooth 11 on the A0 position, the center line of the locational photoelectric sensor 20 of A2 does not overlap with the center of counting tooth 11, and the count signal of this position is " 011 ".Photoelectric sensor 20 continues left lateral with knitting head, and as 1 needle tray spacing of displacement less than t, complete photoelectric sensor conducting phenomenon then can occur, its count signal is " 111 ".As 1 the needle tray spacing t that moves to left from initial position shown in the 3a, situation shown in Fig. 3 b then appears, the center of the locational photoelectric sensor 20 of A1 overlaps with the center of a counting tooth 11, locational photoelectric sensor 20 center lines of A0, A2 then do not overlap with the center line of counting tooth 11, and the count signal of this position is " 101 ".1 the needle tray spacing t that continues to move to left, the center of the locational photoelectric sensor 20 of A2 overlaps with the center of a counting tooth 11, and the center of the locational photoelectric sensor 20 of A0, A1 does not overlap with the center of counting tooth 11, and the count signal of this position is " 110 ".When moving to left 1 needle tray spacing of less than t, full conducting phenomenon can appear also in position shown in Fig. 3 b.Such 3 photoelectric sensors 20 with the count signal that knitting head occurs when moving to left 1 space width B are: 011,111,101,111,110.When knitting head was moved to the left always, it is reciprocal that this batch total is counted signal cycle.
Fig. 4 is 3 situations that photoelectric sensor 20 moves to the right with knitting head.(Fig. 4 a) initial position when moving left shown in Fig. 3 a is identical, and when photoelectric sensor 20 moved right 1 needle tray spacing t (Fig. 4 b) and 2 needle tray spacing 2t (Fig. 4 c), the count signal of its correspondence position was respectively: 110 and 101 for initial position.Count signal when three photoelectric sensors 20 move right 1 space width B with knitting head is: 011,111,110,111,101.Wherein two 111 are identical with above-mentioned situation, also are from a photoelectric sensor center and the counting tooth full conducting situation that occurred when the direction of motion moves less than 1 needle tray spacing t of center coincidence status mutually.
Comparison diagram 3 and Fig. 4, a batch total that is produced because of direction of motion difference count Changing Pattern also different of signal, and computer can be differentiated the direction of knitting head operation according to this Changing Pattern.Simultaneously, in case the photoelectric tube in the photoelectric sensor has damage, count signal just can not counted the rule variation of signal by above-mentioned two batch totals, and computer is easy to make judgement, so that in time fix a breakdown.
From Fig. 3, Fig. 4 as can be seen, no matter three photoelectric sensors move to left or move to right with knitting head, when photoelectric sensor center wherein and counting tooth central lines, other two electric transducer centers are t and 2t along the distance at same direction and contiguous counting tooth center.In Fig. 3 a, the distance at A1, A2 locational electric transducer center and counting tooth center, left side is respectively t and 2t.This photoelectric sensor and the position relation of counting counting tooth 21 on the tooth bar 20 have guaranteed to have only all the time a photoelectric sensor collection " 0 " signal, and other two photoelectric sensors help to produce direction signal.
By above-mentioned photoelectric sensor and the position relation of counting counting tooth 11 on the tooth bar, can be in the same way, be benchmark promptly with above-mentioned A0 position, the locational photoelectric sensor of A1, A2 can be by integral multiple space width B displacement, i.e. distance L (the A0A of locational photoelectric sensor of A1 and the locational photoelectric sensor of benchmark A0
1)=nB+t, locational photoelectric sensor of A2 and benchmark A
0Distance L (the A of locational photoelectric sensor
0A
2)=nB+2t (wherein n=0,1,2 ... natural number).Adjust the installation site of photoelectric sensor on knitting head apart from expression formula and can obtain according to above-mentioned as Fig. 3, count signal shown in Figure 4.
For example, with A shown in Figure 3
1Photoelectric sensor one times the space width B that moves right on the position, i.e. n=2, A
1Locational photoelectric sensor and A
0Distance L (the A of locational photoelectric sensor
0A
1)=2B+t.With A
2Photoelectric sensor two times the space width B that moves right on the position, i.e. n=3, A
2Locational photoelectric sensor and A
0Distance L (the A of locational photoelectric sensor
0A
2)=3B+2t.See also Fig. 5, A
0, A
1, A
2Three locational photoelectric sensors from initial position (Fig. 5 a) move left a needle tray spacing t (Fig. 5 b), move the situation of two needle tray spacing 2t (Fig. 5 c) left.A batch total that is produced is counted signal and is: 011,111,101,111,110.Just the same with the count signal that photoelectric sensor produced of installation site shown in Figure 3.Fig. 6 has provided when moving to the right, moves a needle tray spacing t (Fig. 6 b) to the right, moves the situation of two needle tray spacing 2t (Fig. 6 c) to the right from the figure of initial position (6a).A batch total that is produced is counted signal and is: 011,111,110,111,101.Equally, also just the same with the count signal that photoelectric sensor produced of installation site shown in Figure 4.
Certainly, A
1, A
2Locational photoelectric sensor and A
0Distance L (the A of locational photoelectric sensor
0, A
1), L (A
0, A
2) also can shorten extreme case n=0, L (A by integral multiple
0, A
1)=nB+t=t, L (A
0, A
2)=nB+2t=2t as long as photoelectric sensor and counting tooth can be done enough for a short time, is to realize above-mentioned tally function equally.So, as long as Fig. 3 a (or Fig. 4 a) shown on the basis of photoelectric sensor installation site, with the relatively move integral multiple of space width B of two adjacent photoelectric sensors, its position count signal that produces when operation is the same with Fig. 3, situation shown in Figure 4, exemplifies no longer one by one here.
Three photoelectric sensors of above-mentioned employing are best, most economical designs.Certainly also can adopt a plurality of photoelectric sensors, for example adopt five photoelectric sensors, see also Fig. 7, Fig. 8.Three photoelectric sensors shown in Figure 3 have only a photoelectric sensor collection " 0 " signal for guaranteeing each correspondence position, and its space width B=3t is by the space width B=5t of the counting tooth bar of five its correspondences of photoelectric sensor of this rule.Knitting head is just become by 5 binary arrays at the position count signal of a certain position of needle-bar like this.Its installation site of five photoelectric sensings equally also can change by the space width integral multiple with above-mentioned three.So A
1, A
2, A
3, A
4Locational photoelectric sensor and high order end reference position A
0On the distance of photoelectric sensor be respectively L (A
0A
1), L (A
0A
2), L (A
0A
3), L (A
0A
4), wherein:
L(A
0A
1)＝nB+t；
L(A
0A
2)＝nB+2t；
L(A
0A
3)＝nB+3t；
L (A
0A
4)=nB+4t, n=0,1,2,3 ... natural number.
(Fig. 7 a) moves to left that needle tray spacing t to four a needle tray spacing 4t (Fig. 7 b～7e), count signal and be: 01111,10111,11011,11101,11110 by a batch total that is produced from initial position with knitting head for five photoelectric sensings.(Fig. 8 a) moves to right that (count signal of the correspondence of Fig. 8 b～8e) produced is needle tray spacing t to four a needle tray spacing 4t: 01111,11110,11101,11011,10111 to knitting head from initial position.With Fig. 3, rule shown in Figure 4 is identical, no matter five photoelectric sensors move to left or move to right with knitting head, when photoelectric sensor center wherein and counting tooth central lines, other four electric transducer centers are t, 2t, 3t, 4t along same direction with the contiguous distance of counting the tooth center, all the time have only a photoelectric sensor collection " 0 " signal, other photoelectric sensor helps to produce direction signal.And " 0 " change in location in 5 binary count signals has similar rule to Fig. 3, Fig. 4.
Employing is on all four more than the counting effect of other its generation of situation of three photoelectric sensings, and the setting of its position should meet above-mentioned rule certainly.If any X photoelectric sensor, then according to above-mentioned rule, the space width B=Xt of corresponding counting tooth bar, any A beyond the A0 of reference position
NPhotoelectric sensor centre distance L (A0, the A of the photoelectric sensor of position and A0 position
N)=nB+N t, wherein N=1,2 ..., X-1, n=0,1,2 ... natural number.Here give unnecessary details no longer one by one.
Claims (3)
- One kind with the needle tray position method of counting of flat knitting machine head transportation load one to one, it is characterized in that being respectively arranged with the counting tooth bar along the both sides of flat knitting machine head traffic direction at needle-bar, it is corresponding to the counting tooth bar and the interlock of this side activity needle plate of movable needle plate one side, 3 photoelectric sensors arranged side by side on the position of the corresponding counting of flat knitting machine head tooth bar, when flat knitting machine head moves, the counting tooth of counting on the tooth bar walked between a pair of luminous tube of each photoelectric sensor and light-receiving tube, produce the count signal that correspondence is counted needle tray position on the both sides needle plate of tooth position respectively, the space width of described counting tooth bar is B, B=3t, t is the needle tray spacing, above-mentioned side by side three photoelectric sensors, with its outermost one sidelight electric transducer is benchmark, if its Position Number is A0, all the other two photoelectric sensors are respectively A1 by Position Number from the close-by examples to those far off, A2, the then photoelectric sensor of A0 position and A1, the distance at its center of photoelectric sensor of A2 position is respectively L (A0A 1) and L (A0, A 2), L (A0A 1)=nB+t, L (A0, A 2)=nB+2t, wherein n=0,1,2 ... natural number.
- 2. a kind of and needle tray position according to claim 1 be the method for counting of flat knitting machine head transportation load one to one, it is characterized in that also can be arranged side by side with X photoelectric sensor more than 3, be X＞3, the space width B=Xt of described counting tooth bar, X photoelectric sensor is benchmark with its outermost one sidelight electric transducer side by side, if its Position Number is A0, all the other photoelectric sensors are followed successively by A1, A2 by Position Number from the close-by examples to those far off ... A N, the then photoelectric sensor and the A of A0 position NThe centre distance of the photoelectric sensor of position is L (A0A N), L (A0A N)=nB+Nt, wherein N=1,2 ..., X-1, n=0,1,2 ... natural number.
- 3. a kind of and needle tray position according to claim 1 be the method for counting of flat knitting machine head transportation load one to one, it is characterized in that described movable needle plate is connected with the counting tooth bar of this side by a plate, and realization links.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100213642A CN101338477B (en) | 2008-08-01 | 2008-08-01 | Counting method of travel amount of flat knitting machine head corresponding to position of needle groove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100213642A CN101338477B (en) | 2008-08-01 | 2008-08-01 | Counting method of travel amount of flat knitting machine head corresponding to position of needle groove |
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| Publication Number | Publication Date |
|---|---|
| CN101338477A CN101338477A (en) | 2009-01-07 |
| CN101338477B true CN101338477B (en) | 2010-09-29 |
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|---|---|---|---|
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|---|---|---|---|---|
| CN101845708B (en) * | 2010-04-28 | 2011-08-24 | 常熟市金龙机械有限公司 | Machine head speed control mechanism of computer flat knitting machine |
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Effective date of registration: 20091211 Address after: Postal code 2, Yang Yi River Development Zone, Chengdong Town, Haian County, Jiangsu Province, China: 226625 Applicant after: Feng Jia Lin Co-applicant after: Wu Youqun Address before: Postal code 2, Yang Yi River Development Zone, Chengdong Town, Haian County, Jiangsu Province, China: 226625 Applicant before: Feng Jialin |
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