CN100395542C - Image testing method for chemical fibre thermal contraction rate and testing apparatus thereof - Google Patents
Image testing method for chemical fibre thermal contraction rate and testing apparatus thereof Download PDFInfo
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- CN100395542C CN100395542C CNB2004100844088A CN200410084408A CN100395542C CN 100395542 C CN100395542 C CN 100395542C CN B2004100844088 A CNB2004100844088 A CN B2004100844088A CN 200410084408 A CN200410084408 A CN 200410084408A CN 100395542 C CN100395542 C CN 100395542C
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Abstract
The present invention relates to an image test method and an image test device for a chemical fiber thermal contraction rate, which belongs to the technical field of textile measuring instruments. The image test method adopts a CCD camera, and uses an image method for orderly doing length change measurement on each single fiber test sample before and after the single fiber test samples are heated, and the fiber thermal contraction ratio is calculated through a computer. The image test device is composed of a stepping motor, a turntable, a positioning pin, a test sample circular cylinder, a lifting device a metering calibration block, a spring clamp type upper clamp, a tension clamp type lower clamp, a support holding circular ring, the CCD camera, a pulse distributor, a box body, the computer, a display and a printer. When used, the image test method and the image test device have the advantages of high reliability of test result data, high accuracy, simple instrument structure and low failure rate.
Description
Technical field
The invention belongs to weaving surveying instrument field, it relates to a kind of image measurement method and proving installation thereof of chemical fibre thermal contraction rate, is applicable to the check to fiber quality of the quality control of chemical fibre mill and textile enterprise, testing agency.
Background technology
The percent thermal shrinkage of man-made fiber is very big to the influence of manufactured goods quality.Because the heat-staple difference of fiber, not only can influence the dimensional stability of manufactured goods, and can cause variable color, the coloration that aberration etc. are bad as the used polyster fibre of sewing thread, causes the contraction of yarn to make goods produce shrinkage at the suture place because percent thermal shrinkage is excessive, have a strong impact on the presentation quality of goods, excessive shrinkage factor also can make the length of sewing thread shorten, diameter chap, influence the dispatch from the factory quality and the cost of product.
The measuring method of fiber percent thermal shrinkage is to measure preceding original length of fiber heating and the length after the heat shrink respectively, asks for the percent thermal shrinkage value of tested fiber divided by the preceding original length of heating according to its length difference.It is ultimate fibre method and bundle fiber method that domestic and international at present measurement fiber percent thermal shrinkage has two kinds of methods, the measuring error of bundle fiber method is bigger, if every fiber all is in straight configuration in the bundle fiber, the shrinkage factor that then records is wherein to shrink a maximum fiber, and shrinkage value is bigger than normal than the mean value that single method is measured possibly; Be not in straight configuration entirely as each root fiber in the bundle fiber, it is less than normal than single method then to record the possibility of result, domestic existing YG364 bundle fiber thermal shrinkage instrument is owing to exist the problems referred to above at present, add that sample will be put in order by hand, beam splitting, the naked eyes reading, artificial calculating, efficient is very low, and the unit of use is few.
External existing ultimate fibre method has Japanese Industrial Standards JISL 1015-1999 and the ASTM D 5104-2002 of American Standard of Testing Materials association etc. at present, Japan and American process are to operate by hand simply, naked eyes are measured, improve measuring accuracy as needs, when adopting altimeter to measure fibre length, American process is only measured 10, as discrete too big, survey 10 again, length is 50mm at least, scale division value 0.5mm, and the staple fibre that is shorter in length than 50mm just can't be used the method, though a day this method is measured 30 fibers, but the length range that does not have regulation to be suitable for, as being 35mm to measure length, scale division value is that 0.5mm calculates, then the measuring accuracy of shrinkage factor is very low has only 1.4%, domestic existing YG365 ultimate fibre thermal shrinkage instrument adopts mobile grating to produce the method measurement length of Moire fringe numeration at present, exists error big, complex structure, shortcomings such as failure rate height, practical application effect is relatively poor.
Summary of the invention
The invention provides a kind of image measurement method of chemical fibre thermal contraction rate and the low problem of chemical fibre thermal contraction rate measuring accuracy that proving installation exists with the solution prior art thereof in order to overcome above-mentioned defective.
The technical scheme of technical solution problem of the present invention is as follows:
A kind of image measurement method of chemical fibre thermal contraction rate is characterized in that realizing as follows:
(1) opens the power switch of fiber percent thermal shrinkage proving installation and computing machine earlier, preheating half an hour;
(2) open L type upper cover 1211 with handles on the casing 12 after, clamp the ultimate fibre sample with clips formula lower gripper 8, hand is pushed the spring of clamper 7 on the spring clip type that is packed on the sample garden tube frame 4 aside, the ultimate fibre sample upper end that will hang with clips formula lower gripper 8 with tweezers sandwiches on the spring clip type in the clamper 7, installing clamper 7 on 35 spring clip types on the sample garden tube frame 4 altogether, have 35 ultimate fibre samples that hang with clips formula lower gripper 8, close L type upper cover 1211 with handles;
(3) a measurement and calibration piece 6 that is equipped with by place, the initial measuring position on the sample garden tube frame 4 can be measured with this basis by the length value of measurement and calibration piece 6 demarcation CCD cameras 10 each pixel correspondence before beginning to measure at every turn;
(4) send into stepper motor 1 and sample garden tube frame 4 is rotated by pulsqe distributor 11 by computing machine 13 serial port output pulse signals by stepper motor 1 drive rotating disk 2 and its register pin 3, revolution is crossed the measurement that certain angle carries out a ultimate fibre specimen length, adopt branch's mensuration during measurement, promptly be arranged on the lip-deep standard liness 41 of sample garden tube frame 4 to clips formula lower gripper 8 ends distance as CCD camera 10 length measured, when sample garden tube frame 4 turn over when a week measuring the ultimate fibre specimen length by root obtain the image length signal by CCD camera 10 and import computing machine 13 can obtain 35 heating altogether before the test data of ultimate fibre specimen length;
(5) open L type upper cover 1211 with handles on the casing 12, rotate the lifting knob on the common helical structure jacking gear 5 in tube frame 4 tops, sample garden, clips formula lower gripper 8 is held up by holding garden ring 9, make the ultimate fibre sample be the nature relaxed state, the sample garden tube frame 4 that will have the preceding ultimate fibre sample of 35 heating then takes off from rotating disk 2, put into other existing baking oven and carry out heat baking processing, after fiber arrives 100～200 ℃ of heat baking treatment temperatures and 15～60 fens clock times, from baking oven, take out sample garden tube frame 4, be placed under the constant-temperature constant-humidity environment, carry out the humiture balance of ultimate fibre sample after 35 heating;
(6) sample garden tube frame 4 is placed on the rotating disk 2 again gently, rotates the lifting knob on the common helical structure jacking gear 5 in tube frame 4 tops, sample garden then, make clips formula lower gripper 8 break away from the holding of holding garden ring 9, the ultimate fibre sample is stretched naturally;
(7) close L type upper cover 1211 with handles and restart stepper motor 1, the same branch's mensuration that adopts, when sample garden tube frame 4 turns over when a week measuring the ultimate fibre specimen length by root, obtain picture signal and import the test data that computing machine 13 can obtain ultimate fibre specimen length after 35 heating altogether by CCD camera 10, change calculations by length before and after 13 pairs of ultimate fibre sample heating of computing machine goes out ultimate fibre sample percent thermal shrinkage, get 30 valid data and calculate the mean value index of needed ultimate fibre sample percent thermal shrinkage again by computing machine 13, on display 14, show then and print by printer 15.
The proving installation of the image measurement method of described chemical fibre thermal contraction rate, it comprises stepper motor 1, register pin 3, clamper 7 on jacking gear 5 spring clip types, clips formula lower gripper 8, pulsqe distributor 11, computing machine 13, the store memory of computing machine 13 has Flame Image Process and calculates the software of ultimate fibre specimen length and percent thermal shrinkage, display 14, printer 15, it is characterized in that it is stated comprises the rotating disk 2 that links to each other with stepper motor 1 output shaft, the sample garden tube frame 4 that register pin 3 links to each other with rotating disk 2 and is provided with standard lines 41 is crossed in the road, be installed in the measurement and calibration piece 6 on the sample garden tube frame 4, be installed in the holding garden ring 9 on the sample garden tube frame 4, be supported on the CCD camera 10 on the lower case 122 of casing 12, be supported on the test table top on and ladle cover at stepper motor 1, rotating disk 2, register pin 3, sample garden tube frame 4, clamper 7 on the spring clip type, clips formula lower gripper 8, holding garden ring 9, the casing 12 of CCD camera 10 and pulsqe distributor 11 outsides;
The light source that described CCD camera 10 is adopted is the small-sized cold light source electricity-saving lamp of 2.5W seat formula, and bulb coating three primary colours high-efficiency fluorescence powder also is installed in measurand one side;
Described casing 12 is by comprising that the upper case 121 and the band spike lower case 122 that are provided with by the L type upper cover 1211 with handles that is connected through the hinge form.
Advantage compared with prior art of the present invention is as follows:
1, the present invention adopts the CCD camera technique accurately to measure before the heating of ultimate fibre sample and the length variations after the heating, and resolution is 0.01mm, and the measuring accuracy and the structure that have improved ultimate fibre sample percent thermal shrinkage significantly are more reliable, and failure rate greatly reduces;
2, adopt 5 standby ultimate fibres, guarantee that each effective radical of ultimate fibre sample of measuring is not less than 30, has improved the confidence level of test result;
3, tube frame in sample garden adopts the stepper motor transmission, and running is steadily controlled accurately reliable;
4, instrument adopts the closed enclosure bulk measurement, is not subjected to the influence of ambient lighting, has improved instrument test result's reappearance.
Description of drawings
Fig. 1 is the image measurement device synoptic diagram of chemical fibre thermal contraction rate of the present invention
Among Fig. 1,1---stepper motor, 2---rotating disk, 3---register pin, 4---sample garden tube frame, 5---jacking gear, 6---the measurement standard piece, clamper on 7-spring clip type, 8---clips formula lower gripper, 9---holding garden ring, 10---the CCD camera, 11---pulsqe distributor, 12---casing, 13---computing machine, 14---display, 15---printer;
Fig. 2 is branch's mensuration synoptic diagram
Among Fig. 2,7---clamper on the spring, 8---clips formula lower gripper, 41---standard lines, l
1---regular length, l
2---actual measurement length, L---the ultimate fibre sample all is held length;
Fig. 3 is the casing schematic perspective view
Among Fig. 3,12---casing, 121---upper case, 1211---L type upper cover with handles, 122---band spike lower case.
Embodiment
As shown in Figure 1, a kind of image measurement method and proving installation thereof of measuring chemical fibre thermal contraction rate provided by the invention, the length after the single fiber sample heats preceding and heating can be measured respectively, the percent thermal shrinkage of ultimate fibre sample can be tried to achieve by the difference of both length divided by the preceding original length of ultimate fibre sample heating.The method of testing of a kind of chemical fibre thermal contraction rate of the present invention, it is characterized in that realizing as follows: the power switch preheating half an hour of opening fiber percent thermal shrinkage proving installation and computing machine earlier, clamper 7 is the spring clip type structure on being adorned on the sample garden tube frame 4, one end is packed in tube frame 4 tops, sample garden, when hand is stirred it and is stretched out head end and open spring, be that ultimate fibre sample upper end that available tweezers will hang with clips formula lower gripper 8 is put on the spring clip type clamper 7 and clamped, be fixed with clamper 7 on 35 spring clip types on the sample garden tube frame 4 so 35 ultimate fibre samples are housed altogether, each rotational angle of sample garden tube frame 4 and stop to carry out Measuring Time, control by the pulse signal that computing machine 13 sends, this signal is exported by computing machine 13 serial ports, send into stepper motor 1 by pulsqe distributor 11, the rotating disk 2 that drive is mounted thereon rotates, sample garden tube frame 4 is contained on the rotating disk 2 by register pin 3 and drives rotation by rotating disk 2, sample garden tube frame 4 can be put easily or take out from rotating disk 2, below the rotating disk 2 ball bearing is housed, make rotating disk 2 and sample garden tube frame 4 rotate more flexible, it's a week are past sample garden tube frame 4 revolutions, each ultimate fibre sample adopts branch's mensuration to obtain the preceding depth map image signal of ultimate fibre sample heating by CCD camera 10 successively on it, input computing machine 13, the software that Flame Image Process and calculating ultimate fibre specimen length and percent thermal shrinkage are arranged at the store memory of computing machine 13, can obtain the test data of the preceding ultimate fibre specimen length of 35 heating altogether for this reason, then be contained in the screw rod at tube frame 4 middle parts, sample garden by the lifting knob on common helical structure jacking gear 5 above the sample garden tube frame 4, by nut holding garden ring 9 is steadily slowly risen, measurement brings error to fibre length to avoid holding up suddenly external force, clips formula lower gripper 8 up to each fiber lower end is erected by holding garden ring 9, ultimate fibre sample between upper and lower holder is the nature relaxed state, strike L type upper cover 1211 with handles on the body 12 of unpacking then with the hand and will have that the sample garden tube frame 4 of ultimate fibre sample takes off from rotating disk 2 before 35 heating, put into other existing baking oven and carry out heat baking processing, after 100～200 ℃ of fiber heat baking treatment temperatures and 15～60 fens clock times, from baking oven, take out sample garden tube frame 4, be placed under the constant-temperature constant-humidity environment, carry out the humiture balance of ultimate fibre sample after 35 heating, again be placed on sample garden tube frame 4 on the rotating disk 2 gently after the balance, close L type upper cover 1211 with handles earlier and rotate lifting knob on the common helical structure jacking gear 5 in tube frame 4 tops, sample garden then, make clips formula lower gripper 8 break away from the holding of holding garden ring 9, the ultimate fibre sample is stretched naturally, restart stepper motor 1, the same branch's mensuration that adopts, when sample garden tube frame 4 turns over when a week measuring the ultimate fibre specimen length by root, obtain picture signal and import the test data that computing machine 13 can obtain ultimate fibre specimen length after 35 heating altogether by CCD camera 10, change calculations by length before and after 13 pairs of ultimate fibre sample heating of computing machine goes out ultimate fibre sample percent thermal shrinkage, get 30 valid data and calculate the mean value index of needed ultimate fibre sample percent thermal shrinkage again by computing machine 13, on display 14, show then and print by printer 15.
As shown in Figure 2, the present invention adopts that clamper 7 is regular length l to the distance that is arranged between the sample garden tube frame 4 lip-deep standard liness 41 on the spring clip type
1, this length l
1Not within CCD camera 10 measurement ranges, standard lines 41 to clips formula lower gripper 8 ends apart from l
2Be the actual measurement length of CCD camera 10, the variation of length is within this length range before and after the heating of ultimate fibre sample, and just CCD camera 10 is not to measure whole ultimate fibre sample all to be held length L, but length l before and after the heating of measurement ultimate fibre sample
2Changing unit, CCD camera 10 each pixel measured lengths value are greatly reduced, resolution can reach 0.01mm, has improved the measuring accuracy of ultimate fibre sample percent thermal shrinkage.
For guaranteeing the test result confidence level, measurement and calibration piece 6 is equipped with at the place in sample garden tube frame 4 initial measuring position, instrument is demarcated the length value of each pixel correspondence by measurement and calibration piece 6 before beginning to measure at every turn, carry out linear measure longimetry based on this, can guarantee the accuracy measured and each apparatus measures result's consistance.
As Fig. 1, the image measurement device of chemical fibre thermal contraction rate shown in Figure 3, it comprises stepper motor 1, register pin 3, clamper 7 on the spring clip type, clips formula lower gripper 8, pulsqe distributor 11, computing machine 13, the store memory of computing machine 13 has Flame Image Process and calculates the software of ultimate fibre specimen length and percent thermal shrinkage, display 14, printer 15, it is characterized in that it also comprises the rotating disk 2 that links to each other with stepper motor 1 output shaft, link to each other with rotating disk 2 and be provided with the sample garden tube frame 4 of standard lines 41 by register pin 3, be installed in the measurement and calibration piece 6 on the sample garden tube frame 4, be installed in the holding garden ring 9 on the sample garden tube frame 4, be supported on the CCD camera 10 on the lower case 122 of casing 12, be supported on the test table top on and ladle cover at stepper motor 1, rotating disk 2, register pin 3, sample garden tube frame 4, clamper 7 on the spring clip type, clips formula lower gripper 8, holding garden ring 9, the casing 12 of CCD camera 10 and pulsqe distributor 11 outsides.
Used light source when measurand is made a video recording, its luminous intensity should be moderate and has an illumination of soft scattering, avoid of the influence of direct reflected light to measurement result, the present invention adopts the small-sized cold light source electricity-saving lamp of 2.5W seat formula, bulb coating three primary colours high-efficiency fluorescence powder, device carries out side lighting in measurand on one side, and is significant to improving imaging definition and test result accuracy.
Claims (4)
1. the image measurement method of a chemical fibre thermal contraction rate is characterized in that realizing as follows:
(1) opens the power switch of fiber percent thermal shrinkage proving installation and computing machine earlier, preheating half an hour;
(2) open L type upper cover with handles (1211) on the casing (12) after, clamp the ultimate fibre sample with clips formula lower gripper (8), hand is pushed the spring of clamper (7) on the spring clip type that is packed on the sample garden tube frame (4) aside, the ultimate fibre sample upper end that will hang with clips formula lower gripper (8) with tweezers sandwiches in the clamper on the spring clip type (7), installing clamper (7) on 35 spring clip types on the sample garden tube frame (4) altogether, have 35 ultimate fibre samples that hang with clips formula lower gripper (8), close L type upper cover with handles (1211);
(3) a measurement and calibration piece (6) that is equipped with by place, the initial measuring position on the sample garden tube frame (4) can be measured with this basis by the length value of each pixel correspondence of measurement and calibration piece (6) demarcation CCD camera (10) before beginning to measure at every turn;
(4) send into stepper motor (1) and sample garden tube frame (4) is rotated by pulsqe distributor (11) by computing machine (13) serial port output pulse signal by stepper motor (1) drive rotating disk (2) and its register pin (3), revolution is crossed the measurement that certain angle carries out a ultimate fibre specimen length, adopt branch's mensuration during measurement, promptly be arranged on the lip-deep standard lines of sample garden tube frame (4) (41) to clips formula lower gripper (8) end distance as CCD camera (10) length measured, when sample garden tube frame (4) turn over when a week measuring the ultimate fibre specimen length by root obtain the image length signal and import computing machine (13) by CCD camera (10) can obtain 35 heating altogether before the test data of ultimate fibre specimen length;
(5) open L type upper cover with handles (1211) on the casing (12), rotate the lifting knob on sample garden tube frame (4) the common helical structure jacking gear in top (5), clips formula lower gripper (8) is held up by holding garden ring (9), make the ultimate fibre sample be the nature relaxed state, the sample garden tube frame (4) that will have the preceding ultimate fibre sample of 35 heating then takes off from rotating disk (2), put into other existing baking oven and carry out heat baking processing, after fiber arrives 100～200 ℃ of heat baking treatment temperatures and 15～60 fens clock times, from baking oven, take out sample garden tube frame (4), be placed under the constant-temperature constant-humidity environment, carry out the humiture balance of ultimate fibre sample after 35 heating;
(6) sample garden tube frame (4) is placed on the rotating disk (2) again gently, rotate the lifting knob on sample garden tube frame (4) the common helical structure jacking gear in top (5) then, make clips formula lower gripper (8) break away from the holding of holding garden ring (9), the ultimate fibre sample is stretched naturally;
(7) close L type upper cover with handles (1211) and restart stepper motor (1), the same branch's mensuration that adopts, when sample garden tube frame (4) turns over when a week measuring the ultimate fibre specimen length by root, obtain picture signal and import the test data that computing machine (13) can obtain ultimate fibre specimen length after 35 heating altogether by CCD camera (10), by computing machine (13) change calculations that the ultimate fibre sample heats front and back length is gone out ultimate fibre sample percent thermal shrinkage, get 30 valid data and calculate the mean value index of needed ultimate fibre sample percent thermal shrinkage again by computing machine (13), print in the last demonstration of display (14) with by printer (15) then.
2. the proving installation of the image measurement method of chemical fibre thermal contraction rate according to claim 1, it comprises stepper motor (1), register pin (3), jacking gear (5), clamper on the spring clip type (7), clips formula lower gripper (8), pulsqe distributor (11), computing machine (13), the store memory of computing machine (13) has Flame Image Process and calculates the software of ultimate fibre specimen length and percent thermal shrinkage, display (14), printer (15), it is characterized in that it also comprises the rotating disk (2) that links to each other with stepper motor (1) output shaft, link to each other with rotating disk (2) and be provided with the sample garden tube frame (4) of standard lines (41) by register pin (3), be installed in the measurement and calibration piece (6) on the sample garden tube frame (4), be installed in the holding garden ring (9) on the sample garden tube frame (4), be supported on the CCD camera (10) on the lower case (122) of casing (12), be supported on the test table top on and ladle cover in stepper motor (1), rotating disk (2), register pin (3), sample garden tube frame (4), clamper on the spring clip type (7), clips formula lower gripper (8), holding garden ring (9), the casing (12) that CCD camera (10) and pulsqe distributor (11) are outside.
3. the proving installation of the image measurement method of chemical fibre thermal contraction rate according to claim 2, it is characterized in that the light source that described CCD camera (10) is adopted is the small-sized cold light source electricity-saving lamp of 2.5W seat formula, bulb coating three primary colours high-efficiency fluorescence powder also is installed in measurand one side.
4. according to the proving installation of the image measurement method of claim 2 or 3 described chemical fibre thermal contraction rates, it is characterized in that described casing (12) is by comprising that the upper case (121) and the band spike lower case (122) that are provided with the L type upper cover with handles (1211) that is connected through the hinge form.
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| CNB2004100844088A CN100395542C (en) | 2004-11-22 | 2004-11-22 | Image testing method for chemical fibre thermal contraction rate and testing apparatus thereof |
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| CNB2004100844088A CN100395542C (en) | 2004-11-22 | 2004-11-22 | Image testing method for chemical fibre thermal contraction rate and testing apparatus thereof |
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| CN1609603A CN1609603A (en) | 2005-04-27 |
| CN100395542C true CN100395542C (en) | 2008-06-18 |
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| CN1609603A (en) | 2005-04-27 |
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