CN1117895C - Transmitting cloth offset detecting device - Google Patents
Transmitting cloth offset detecting device Download PDFInfo
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- CN1117895C CN1117895C CN 00104370 CN00104370A CN1117895C CN 1117895 C CN1117895 C CN 1117895C CN 00104370 CN00104370 CN 00104370 CN 00104370 A CN00104370 A CN 00104370A CN 1117895 C CN1117895 C CN 1117895C
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- receiving device
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- 239000004744 fabric Substances 0.000 title claims abstract description 140
- 230000035945 sensitivity Effects 0.000 claims abstract description 31
- 230000005540 biological transmission Effects 0.000 claims description 27
- 238000003745 diagnosis Methods 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims 1
- 238000001514 detection method Methods 0.000 abstract description 9
- 238000009958 sewing Methods 0.000 abstract description 9
- 238000010586 diagram Methods 0.000 description 9
- 239000000428 dust Substances 0.000 description 4
- 206010034972 Photosensitivity reaction Diseases 0.000 description 3
- 230000036211 photosensitivity Effects 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
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- Sewing Machines And Sewing (AREA)
- Treatment Of Fiber Materials (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
A light transmissive textural dislocation detecting device according to the present invention is suitable for preventing a poor sewing while sewing edge using a sewing machine. The device comprises a photo receiver for detecting the irradiation of light on a plurality of points on the cloth, which is being sewn. In order for the maximum detected value among the plural detected values to be consistent with the basis value used for the detection of the deviation of the cloth, a feedback signal from a CPU is used to automatically adjust the sensitivity of a variable resistor connected to the photo receiver. Through such a constitution, there is no need of manually adjusting the sensitivity. The detection of textural dislocation can be reliably and accurately carried out even under situations where there is a drastic change in the light irradiation on the cloth.
Description
The present invention relates to transmitting cloth offset detecting device, it be mainly used in serger the polylith cloth is overlapped make, when binding off, whether the cloth after overlapping is produced mutual skew detect, when producing cloth offset, can wait and prevent poor stitching quality by reporting to the operator.
This transmitting cloth offset detecting device has: be configured in by the light radiator of the one side side of tailoring cloth, be admitted to the falling pin portion of Sewing machines and move through this pin portion that falls under the state that overlaps by tailoring cloth; And be configured in by the light-receiving device of the another side side of tailoring cloth relative with this light radiator, changed by the light quantity of light time by tailoring cloth by light-receiving device according to light transmission and detect cloth offset from light radiator.In detail, in the time will being compared by the light transmission capacity of the light transmission capacity of the coincidence part of tailoring cloth and non-coincidence portion, the light transmission capacity of non-coincidence portion is bigger.Like this,, just can when actual making, judge by light-receiving device to be subjected to the light transmission capacity of light whether to surpass this a reference value, thereby detect, output has or not cloth offset by between the two-part light transmission capacity that light transmission capacity is had difference, setting a reference value.
Yet, when the thickness of the cloth of making object is inequality, the light transmission capacity of its coincidence part and the light transmission capacity of non-coincidence portion all change, at the cloth with specific thicknesses is that object is set in a reference value as described above, when fabric thickness changes, just produce the situation that can not detect cloth offset in accordance with regulations.For example, with the bigger cloth of thickness is that object is still under the situation of a reference value of having set, desire detects the thin cloth offset of fabric thickness, the light transmission capacity of the coincidence part of cloth surpasses a reference value sometimes, like this, although not too can produce cloth offset,, just might produce the flase drop action if produce cloth offset.Therefore, in transmitting cloth offset detecting device, need be corresponding and set the change a reference value with the fabric thickness of making object.
Setting change device as this a reference value, the general in the past device that adopts is, the cloth examination seam of object will be made, detect this examination the sew cloth light transmission capacity of coincidence part of material and the light transmission capacity of non-coincidence portion respectively, adjust the sensitivity of light-receiving device so that become a reference value between two light transmission capacities after detecting them with the manual operation variable resistance.
But, in as described above, existing transmitting cloth offset detecting device, the fabric thickness of making object changes at every turn, not only to carry out the sensitivity of trouble and adjust operation, and when the cloth of making object was patterned cloth, light transmission capacity changed because of the situation of the pattern of light transmission position and might produce the flase drop action.That is to say, become a reference value if the sensitivity determinating of light-receiving device is become to be difficult in the middle of the coincidence part with the material that sews cloth in examination to see through the light transmission capacity and the amount between the light transmission capacity of the pattern position that is difficult to see through light in the middle of non-coincidence of the pattern position of light, the light transmission capacity of the pattern position that sees through light easily of coincidence part just surpasses a reference value so, although not too can produce cloth offset, but then might produce the flase drop action if produce cloth offset, will damage with patterned cloth is the measuring ability of making the cloth offset detecting device of object.
In view of above-mentioned situation, main purpose of the present invention is, a kind of transmitting cloth offset detecting device is provided, the sensitivity of the trouble that does not only need manual operation and brought is adjusted operation, and when being also reliably and correctly to carry out original cloth offset detection when making object with the severe patterned cloth of the variation of light transmission capacity.
Another object of the present invention is, when when adhering to dust and so on and make the irradiation volume production of the light income of light-receiving device and light radiator give birth to ageing minimizing, wait and impel them to reset into original light income and irradiation amount through sensitive surface and irradiation face are cleaned, also can guarantee the cloth offset detection performance stipulated even use over a long time.
Other purposes of the present invention can be learnt in the following description.
For realizing above-mentioned main purpose, the transmitting cloth offset detecting device of this 1st invention is, light radiator be configured in coincidence by the one side side of tailoring cloth, light-receiving device is configured in by the another side side of tailoring cloth, by judging that being subjected to the light transmission capacity of light whether to surpass a reference value from the light of light radiator by light-receiving device detects and have or not cloth offset, be characterized in having along with being detected light-receiving device and be in this by the light income of a plurality of points of tailoring cloth by the making action of tailoring cloth, thereby the irradiation amount of adjusting the sensitivity of described light-receiving device or light radiator automatically is so that maximum detected value and the corresponding to arithmetic unit of described a reference value in its a plurality of detected values.
Adopt basis the 1st invention of above-mentioned such structure, adjust operation in the actual sensitivity that need not all troubles that manual operation brought before making action, as long as examination seam overlaps makes the object cloth, just can be when the examination seam the detected light-receiving device irradiation amount that is in the sensitivity of adjusting light-receiving device in the detected value of the light income of making a plurality of points of object cloth automatically or light radiator make the detected value of light income of maximum consistent with a reference value.Thus, the thickness of no matter making the object cloth how, all can be adjusted to automatically the cloth offset measuring ability that can reliably and correctly bring into play regulation be fit to be subjected to photo sensitivity or suitable irradiation amount.And, even with the position of the easy printing opacity that is scattered here and there and the patterned cloth at position that is difficult to printing opacity for making object, as long as try seam, also can with in the cloth coincidence part the maximum transmission amount of the pattern position of easy printing opacity set a reference value for, therefore, even for making object, also can obtain reliably and correctly to bring into play the effect of the cloth offset measuring ability of regulation with cloth that any pattern is arranged.
In the transmitting cloth offset detecting device of above-mentioned the 1st invention, when maximum detected value in a plurality of light income detected values that also do not make light-receiving device with the irradiation amount adjustment according to the sensitivity of light-receiving device or light radiator reaches the cloth of described a reference value when making object, the 2nd invention as claimed in claim 3 like that, the value of the high sensitivity that will be equivalent to preferably that light-receiving device has or the maximum irradiation amount of light radiator is decided to be a reference value.Adopt the 2nd invention, can not set under the situation of a reference value in when seam examination, can avoid producing because of this former thereby can not carry out after make unfavorable condition in this Sewing machines use of action.
In addition, in transmitting cloth offset detecting device as described above, when the irradiation amount of the sensitivity of automatic adjustment light-receiving device or light radiator, as claim 4 and 5 described the 3rd inventions, by the numerical value that uses the mean value of making (examination seam) action each time or be modified to integrated value as a plurality of light income detected values, even with cloth with any light transmission features for making object, can improve also that a reference value is set the sensitivity of light-receiving device of usefulness or the irradiation amount of light radiator is adjusted precision, thereby can further improve the cloth offset detection performance of regulation.
In addition, in this transmitting cloth offset detecting device, adhering to dust etc. on the irradiation face because of the sensitive surface of making light-receiving device in the action repeatedly and light radiator can make the light income of light-receiving device reduce ageingly, or the irradiation amount of light radiator is reduced ageingly, thereby exist former thereby make the cloth offset of regulation detect the unfavorable condition of decreased performance because of this.Consider this point, the 4th invention as claimed in claim 6 like that, except above-mentioned transmitting cloth offset detecting device, also have the light income that detects light-receiving device whether normally no change and oneself this light-receiving device of diagnosis or light radiator device is arranged, when reducing according to the light income of light-receiving device and the own diagnostic result of the irradiation amount of light radiator when reducing clean sensitive surface and irradiation face etc. and impel them to reset into original light income and irradiation amount, even use over a long time, also can be all the time under detecting the state of automatic adjustment performance of the corresponding light income of change of performance and cloth or irradiation amount, uses the cloth offset of reliable and correctly performance and regulation.
The simple declaration of accompanying drawing:
Fig. 1 is the stereogram with serger major part of transmitting cloth offset detecting device of the present invention;
Fig. 2 is the right view of the serger major part of Fig. 1;
Fig. 3 is the vertical view of the major part of explanation cloth offset state;
Fig. 4 is the block diagram of the circuit structure of expression transmitting cloth offset detecting device of the present invention;
Fig. 5 is that explanation is used to set the programme diagram that be subjected to photo sensitivity adjustment action of cloth offset detection with a reference value;
Fig. 6 is the detection waveform figure that light-receiving device is in the light income of a plurality of points of making the object cloth;
Fig. 7 is with the revised oscillogram of Fig. 6 detection waveform;
Fig. 8 is the own diagnostic action programme diagram of explanation light-receiving device light income.
Below, accompanying drawings example of the present invention.
Fig. 1 is the stereogram with serger M major part of transmitting cloth offset detecting device of the present invention, and Fig. 2 is the right view of the major part of Fig. 1 serger.On the transverse slat 1 of this serger M, be fixed with needle plate 2, above it with become same plane above the transverse slat 1.In the bottom of this needle plate 2 and give the front and back position of clamping in the pin portion 5 that falls that will be bearing in the sewing needle 4 on the serger head 3 with pumping, 2 that are equipped with mutual coincidence up and down by tailoring cloth 6,7 before making that direction of advance Y carries, send tooth 8 and after send tooth 8, and be provided with on the top of needle plate 2 by tailoring cloth 6,7 are pressed into this presser feet 10 above needle plate 2, utilize described front and back to send tooth 8 on one side, 9 will be by tailoring cloth 6,7 carry to making direction of advance Y successively, Yi Bian utilize sewing needle 4 and the not shown looper (synergy of Le-パ) and resemble and carry out binding off at the stitch 11 that becomes certain width with the cloth width X-shaped of making direction of advance Y quadrature as shown in Figure 3.
Ratio at described needle plate 2 falls pin portion 5 also to the rear positions of making direction of advance Y, be provided with the cloth offset detecting sensor 15 of the Nonopaque type that is constituted by light radiator 12 and light-receiving device 14, light radiator 12 is fixed on the upper portion of needle plate 2 and is about to transmitted light and impinges upon by on the tailoring cloth 6,7, and light-receiving device 14 dispose by installation component 13 to be accepted on the relative position of the bottom of being fixed in described needle plate 2 and this light radiator 12 through by the light of tailoring cloth 6,7.
Described transmitting cloth offset detecting sensor 15 is, by judge be subjected to the light transmission capacity of light whether to surpass a reference value by light-receiving device 14 to detect 2 coincidence piece numbers by tailoring cloth 6,7 be 1, or 2, have or not cloth offset thereby detect.In addition, light radiator 12 in this transmitting cloth offset detecting sensor 15 is, when described front and back are sent tooth 8,9 to be in non-conveying active state and described presser feet 10 to be in the active state of pushing cloth, utilize not shown photochopper effect and with the transmitted light pulse type be radiated at by on the tailoring cloth 6,7.
Fig. 4 is the block diagram of circuit structure that expression comprises the cloth offset detecting device of described cloth offset detecting sensor 15.The light transmission capacity signal S1 of the light-receiving device 14 in the cloth offset detecting sensor 15 sees through variable resistance 16 and input amplifier 17 amplifies at this, lead to simultaneously A/D converter 18 quantized form numerical value after, this numerical value is transfused to CPU19.In this CPU19, have or not cloth offset according to relatively judging of predefined a reference value and input value, when cloth offset, just action command signal S2 is outputed to lamp and light and ring with buzzer or cloth offset report portion 20 that picture shows and so on.
Except the light transmission capacity signal S1 of light-receiving device 14, the rotating signal S3 that every rotation is produced for 1 time is input to CPU19 in the cloth offset detecting device with above-mentioned such circuit structure by being installed in rotation detector 21 on the serger M main shaft for example (diagram is omitted), by with input this rotating signal S3 synchronously from the transmitted light of light radiator 12 irradiations pulse type repeatedly, detect light-receiving device 14 and be in, and the numerical value (detected value) of these each light income signal S1 is imported CPU19 by the light income of a plurality of points of tailoring cloth 6,7.This CPU19 has the calculation function of adjusting light-receiving device 14 sensitivity to described variable resistance 16 feedback adjusting signal S4 automatically, so that maximum numerical value becomes a reference value of making the object cloth in input a plurality of numerical value here.In addition, the sensitivity that CPU19 had is adjusted the switching that the calculation function of usefulness can be connected, disconnect by the operation of hand switch 22 automatically.
Below, just in the transmitting cloth offset detecting device that as above constitutes, make object cloth power in change, be used to set cloth offset at 7 o'clock and detect the programme diagram that moves in conjunction with Fig. 5 with the adjustment that is subjected to photo sensitivity of the light-receiving device 14 of a reference value and illustrate.
The operator sends instructions on CPU19 and connects hand switch 22 to begin to adjust sensitivity automatically before making new cloth, will newly make 6,7 coincidences of object cloth then and try seam.
At this moment, the initial sensitivity value of variable resistance 16 is set at A, simultaneously with the one half value, promptly (A/2) be set at B (step S31).Carrying out along with the examination seam, whenever the main axis rotation of serger M once, the rotating signal S3 that is produced is just by rotation detector 21 input CPU19, with input this rotating signal S3 synchronously from the transmitted light of light radiator 12 radiation pulses shapes, detect the light income (light transmission capacity) that light-receiving device 14 is in a plurality of points of making object cloth 6,7 of coincidence.These light incomes are waveform as shown in Figure 6, by light income equalization with this waveform, what can obtain to be modified to waveform as shown in Figure 7 is subjected to light detected value, relatively this size (step S32) that is subjected to receive light detected value Z in the light detected value most greatly and is stored in the reference value alpha among the CPU19.
In this comparative result, when Z＜α, the adjustment signal S4 that utilizes CPU19 to feed back improves the sensitivity of (A+B is set at A again) variable resistance 16, in addition, when not being Z＜α, utilize the adjustment signal S4 of CPU19 feedback to reduce the sensitivity of (A-B is set at A again) variable resistance 16, successively its initial set value B is done into bisection (B/2) on one side on one side the sensitivity of the comparable variohm 16 of automatic repeatedly adjustment up to initial set value B (=(the step S33～S36) that A/2) becomes 1.
And, become moment of initial set value B=1 in the sensitivity of adjusting variable resistance 16 repeatedly automatically, judge whether the initial sensitivity value A of described variable resistance 16 is high sensitivity A
Max(step S37).Its result is when being judged to be A=A
MaxThe time, then judge whether the difference that surpasses certain (constant K) is arranged, promptly whether be α-Z＞K (step S38), with in described reference value alpha and receive greatly most can detect cloth offset reliably between the light detected value Z.Its result when being judged to be α-Z＞K, is updated to the described light detected value Z (step S39) that receives greatly most with the reference value alpha among the CPU19.
As mentioned above, begin to make new make the object cloth before, as long as overlapping this makes the object cloth and tries seam, just cloth offset can be detected with a reference value and be set at the optimum value that no flase drop moves corresponding to the thickness of cloth or the pattern situation of patterned cloth, to this new object cloth 6 of making, 7 cloth offset detects with after a reference value setting end, to the new object cloth 6 of making, during 7 actual making, whether surpass a reference value of as above setting by the light income of judging light-receiving device 14 and detect 2 by tailoring cloth 6,7 coincidence piece number is 1, still 2, have or not cloth offset thereby reliably and correctly detect, when cloth offset, action command signal S2 can be outputed to lamp and light and ring with buzzer or cloth offset report portion 20 that picture shows and so on.
In above-mentioned example, with regard to the sensitivity of automatic adjustment light-receiving device 14 so that the light-receiving device 14 that detects during the examination seam be in and receive light detected value Z most greatly in the detected value of light income of a plurality of points of making the object cloth and the corresponding to problem of reference value alpha is described, but also can replace, promptly, no matter adjust the irradiation amount of light radiator 12 automatically by variable resistance, still adjust the sensitivity of light-receiving device 14 and the irradiation amount of light radiator 12 simultaneously automatically, all same as described above, cloth offset can be detected the optimum value that is set at no flase drop action with a reference value, diagram is omitted here.
In addition, in described transmitting cloth offset detecting device, because of making in the action dust etc. repeatedly attached to light income is reduced ageingly, or dust etc. is attached on the irradiation face of light radiator 12 and the irradiation amount is reduced ageingly, thereby has former thereby make the cloth offset of regulation detect the unfavorable condition of decreased performance because of this.For tackling this point, described CPU19 made have whether normal function of oneself diagnosis light-receiving device 14 or light radiator 12.
That is to say whether in the Sewing machines that transmitting cloth offset detecting devices such as serger have been installed, generally being provided with differentiation on needle plate 2 has and had or not cloth sensor (diagram is omitted) by tailoring cloth.Therefore, make when action actual, shown in Fig. 8 programme diagram, according to the described testing result (step S41) that has or not the cloth sensor, when cloth, under the state of the original cloth offset measuring ability of performance, make (step S42), when this sewing finishing and when having or not the cloth sensor to go out not have cloth, own diagnostic function (step S43) by performance light-receiving device 14 or light radiator 12 judges to make the whether normal of light-receiving device 14 or light radiator 12 each time, when light income minimizing or the minimizing of irradiation amount, clean sensitive surface or irradiation face etc. with the light income that suitably and well guarantees light-receiving device 14 all the time or the irradiation amount of light radiator 12, like this, even use over a long time, also can under the state that the cloth offset detection performance of reliably and correctly bringing into play sensitivity and regulation all the time and cloth change corresponding automatic adjustment performance, use.
Claims (6)
1. transmitting cloth offset detecting device, light radiator be configured in coincidence by the one side side of tailoring cloth, light-receiving device is configured in by the another side side of tailoring cloth, by judging that being subjected to the light transmission capacity of light whether to surpass a reference value from the light of light radiator by light-receiving device detects and have or not cloth offset, it is characterized in that
Be in this light income and adjust the irradiation amount of the sensitivity of described light-receiving device or light radiator automatically thereby have so that the detected value and the corresponding to arithmetic unit of described a reference value of maximum in its a plurality of detected values by a plurality of points of tailoring cloth along with detected light-receiving device by the making action of tailoring cloth.
2. transmitting cloth offset detecting device as claimed in claim 1 is characterized in that, the automatic regulating apparatus of the irradiation amount of the sensitivity of described light-receiving device or light radiator is the device that improves, reduces the variable resistance sensitivity.
3. transmitting cloth offset detecting device as claimed in claim 1 or 2, it is characterized in that, have following a kind of device: when maximum detected value reached described a reference value in the middle of the irradiation amount of the sensitivity of adjusting light-receiving device repeatedly or light radiator does not make a plurality of light income detected values of described light-receiving device yet, the setting value of the high sensitivity that will be equivalent to that described light-receiving device has or the maximum irradiation amount of light radiator was an a reference value.
4. transmitting cloth offset detecting device as claimed in claim 1 or 2, it is characterized in that, have a plurality of light income detected values with described light-receiving device be modified to each time the mean value of making action or integrated value, and with the device of this correction value as the light income detected value.
5. transmitting cloth offset detecting device as claimed in claim 3, it is characterized in that, have a plurality of light income detected values with described light-receiving device be modified to each time the mean value of making action or integrated value, and with the device of this correction value as the light income detected value.
6. transmitting cloth offset detecting device as claimed in claim 1 or 2 is characterized in that, thereby have the light income that detects described light-receiving device whether normally no change oneself this light-receiving device of diagnosis or light radiator device is arranged.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP116955/1999 | 1999-03-18 | ||
| JP11695599A JP4296318B2 (en) | 1999-03-18 | 1999-03-18 | Light transmission type fabric shift detection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1267758A CN1267758A (en) | 2000-09-27 |
| CN1117895C true CN1117895C (en) | 2003-08-13 |
Family
ID=14699882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00104370 Expired - Fee Related CN1117895C (en) | 1999-03-18 | 2000-03-20 | Transmitting cloth offset detecting device |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP4296318B2 (en) |
| CN (1) | CN1117895C (en) |
| TW (1) | TW483964B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103485081B (en) * | 2013-09-30 | 2015-03-25 | 杰克缝纫机股份有限公司 | Industrial sewing machine control system and method based on visible light detection |
| CN106054275A (en) * | 2016-08-12 | 2016-10-26 | 米运田 | Infrared detection edge alignment device |
| JP7045147B2 (en) * | 2017-07-19 | 2022-03-31 | Juki株式会社 | sewing machine |
-
1999
- 1999-03-18 JP JP11695599A patent/JP4296318B2/en not_active Expired - Fee Related
-
2000
- 2000-03-14 TW TW89104562A patent/TW483964B/en not_active IP Right Cessation
- 2000-03-20 CN CN 00104370 patent/CN1117895C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2000262793A (en) | 2000-09-26 |
| TW483964B (en) | 2002-04-21 |
| JP4296318B2 (en) | 2009-07-15 |
| CN1267758A (en) | 2000-09-27 |
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Granted publication date: 20030813 Termination date: 20130320 |