CN108844808B - Device and method for dynamically testing fabric quality - Google Patents
Device and method for dynamically testing fabric quality Download PDFInfo
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- CN108844808B CN108844808B CN201810498096.7A CN201810498096A CN108844808B CN 108844808 B CN108844808 B CN 108844808B CN 201810498096 A CN201810498096 A CN 201810498096A CN 108844808 B CN108844808 B CN 108844808B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/04—Chucks
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/32—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
- G01N3/38—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces generated by electromagnetic means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/56—Investigating resistance to wear or abrasion
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Abstract
The invention discloses a device for dynamically testing the quality of fabric, which comprises a frame body, wherein clamps are arranged on two side walls of the frame body, two brackets are arranged between the two side walls of the frame body, a cam is rotatably connected to the top of each bracket, the lower part of the cam is rotatably connected with the brackets through a wheel shaft, one end of the wheel shaft extends to the outer side surfaces of the brackets and is in key connection with a transmission wheel, a motor is arranged on the frame body between the two brackets, a driving wheel is in key connection with an output shaft of the motor, the driving wheel is in transmission connection with the two transmission wheels through a transmission belt respectively, and the motor controls forward rotation or reverse rotation through a cam; the invention simulates the use of the hip, elbow, knee and other parts of the human body to the fabric when the fabric is worn by the human body, and synchronously detects the performance and sewing quality of the fabric under the coupling mechanical action of stretching, twisting, friction and the like borne by the fabric after sewing.
Description
Technical Field
The invention relates to a device and a method for inspecting and testing fabrics and sewing quality of the fabrics, in particular to a device and a method for dynamically testing the quality of the fabrics, and belongs to the technical field of textile detection.
Background
The fabric and sewing quality is an important content of the quality of textile and clothing, for example, the fabric performance and sewing quality are poor, appearance defects often appear, the wearing and the use of people are influenced, particularly, the quality conditions of yarn looseness, core yarn leakage, partial fracture, sewing slippage, stitch slippage, breakage and the like can be caused due to large stretching and more friction of parts such as elbows, knees, buttocks and the like in the using process, on one hand, the structure of the fabric is influenced, and further the physical performance of the fabric is influenced; on the other hand, the change of the luster can affect the appearance and the color of the fabric; at present, the testing method of the physical properties of the textile mainly simulates and tests physical indexes such as pilling performance, breaking strength, bursting performance and the like of the textile in the using process respectively, but the existing testing technology tests the pilling performance, breaking strength, bursting performance and the like of the textile independently, does not reflect the influence of factors of the actual using state of people, and cannot truly reflect the fabric properties and sewing quality conditions when the textile is actually used by people; particularly, elastic fabrics, composite fabrics (novel yarns, novel structural fabrics) and the like cannot be tested and evaluated, for example, fabrics such as covering yarns, composite yarns, sheath-core yarns and the like woven by a weaving or knitting method have detection items such as yarn looseness, breakage and leakage, sewing slippage, stitch slippage, breakage and the like due to physical actions such as stretching, twisting, friction and the like in the actual use process, and no existing instrument is used for carrying out synchronous testing and method evaluation on all detection items of the fabrics.
Disclosure of Invention
In order to solve the defects of the prior art, the invention provides a device for dynamically testing the fabric quality, which uses a double-cam mechanical structure to simulate the use of the fabric by parts such as buttocks, elbows, knees and the like when a human body wears the fabric, synchronously detects the fabric performance and the sewing quality of the fabric under the coupling mechanical action of stretching, twisting, friction and the like borne by the fabric after sewing, has good detection effect and high efficiency, and simultaneously discloses a method for dynamically testing the fabric quality by adopting the device.
The technical scheme adopted by the invention is as follows:
a device for dynamically testing the quality of fabric comprises a frame body, wherein the tops of two side walls of the frame body are respectively provided with a clamp for clamping the fabric, two supports are arranged between the two side walls of the frame body, the top of each support is rotatably connected with a cam with a fan-shaped section, the cambered surface of each cam is positioned at the upper part, the cambered surface of each cam is higher than the fabric height of the fabric clamped by the two clamps, the lower part of each cam is rotatably connected with the supports through a wheel shaft, one end of each wheel shaft extends to the outer side surfaces of the supports, the wheel shafts extending to the outer side surfaces of the supports are respectively in key connection with a driving wheel, the two driving wheels are positioned at the same side of the supports, a motor is arranged on the frame body between the two supports, an output shaft of the motor is in key connection with a driving, the motor controls forward rotation or reverse rotation through the cam swing control device to drive the two cams to swing synchronously.
As a further preferred feature of the apparatus of the present invention, the driving wheel is a double-row gear, the driving wheel is a gear, and the driving belt is a toothed belt.
In a further preferred embodiment of the device of the present invention, the cam has a swing angle ranging from-30 ° to 30 °.
As a further preferred feature of the device of the present invention, the motor is a worm gear motor.
As a further preferred feature of the device of the present invention, the diameter of the arc of the cam is 10cm and the thickness of the cam is 10 cm.
As a further preferred embodiment of the apparatus of the present invention, the distance between the centers of the two cams is 30cm, and the distance between the two clamps is 50 cm.
A method for dynamically testing the quality of fabric comprises the following steps:
(1) placing the fabric to be tested in a relaxed state in a constant temperature chamber for at least 24 hours;
(2) the method comprises the following steps of shearing a fabric to be tested taken out of a thermostatic chamber, folding the fabric in half, enabling a crease to be parallel to the width direction of the fabric to be tested, sewing the fabric to be tested, clamping and fixing two ends of the sewn fabric to be tested through clamps on two side walls of a frame body respectively, enabling the clamped and fixed fabric to be tested to be in a stretching state, and enabling an arc surface of a cam to be in contact with the lower surface of the fabric to be tested;
(3) the cam swing control device is used for controlling the motor to start and work, the motor rotates forwards or reversely to drive the two cams to swing synchronously, and the cambered surfaces of the cams repeatedly rub the lower surface of the fabric to be tested;
(4) stopping after the cam swings for 2000 times, checking whether the loosening, the breakage, the leakage, the sewing slippage, the careless crack and the damage of fabric yarns appear on the lower surface and the sewing part of the fabric to be tested after the friction, and if so, recording the test result for less than 2000 times, and finishing the test; if the fabric yarn does not appear, the cam is continuously swung for 4000 times in the mode of the step (3), whether the fabric yarn is loosened, broken and leaked, and the phenomena of sewing slippage, careless breakage and damage occur on the lower surface and the sewing part of the fabric to be tested or not is checked every 500 times of swinging of the cam in the period, if so, the corresponding test result times are recorded, and the test is completed; if the fabric yarn does not appear, the cam is continuously swung to 8000 times in the step (3), and whether the fabric yarn is loose, broken and leaked, and sewing slippage, careless breakage and damage of the fabric yarn occur on the lower surface and the sewing part of the fabric to be tested or not is checked every 1000 times of swinging of the cam in the period, if so, the corresponding test result times are recorded, and the test is completed; if not, recording the test result > 8000 times, and completing the test.
As a further preferred aspect of the method of the present invention, the temperature of said thermostatic chamber is 20. + -. 1 ℃ and the humidity is 65. + -. 2% RH.
As a further preferred method of the present invention, the oscillation speed of the cam is 30 to 100 reciprocations/min.
As a further preferable mode of the method, the sewing position for sewing the fabric to be tested is 2.5 cm from the folded fabric to be tested and is parallel to the crease for sewing, and the sewing mode is a single sewing mode which is carried out by adopting a 14-gauge sewing needle and a 16.3tex x 3 suture.
The invention has the beneficial effects that: the double-cam mechanical structure is used for simulating the use of the fabric at the parts such as the hip, the elbow, the knee and the like when a human body wears the fabric, synchronously detecting the fabric performance and the sewing quality condition under the coupling mechanical action such as stretching, twisting, friction and the like after the fabric is sewn, has good detection effect and high efficiency, and overcomes the defects of the prior method and instrument test, effectively solves the problem of dynamic test of the fabric and the sewing quality by using the double-cam mechanical structure to simulate the use of the fabric at the parts such as the hip, the elbow, the knee and the like when the human body wears the fabric and synchronously detecting the fabric performance and the sewing quality condition under the coupling mechanical action such as stretching, twisting, friction and the like after the fabric is sewn, has good detection effect and high efficiency, has the advantages of science, convenience and accuracy, and provides scientific fabric (yarn) performance data before the fabric is sewn into the garment, meanwhile, the quality problem of the sewn fabric under the dynamic condition can be evaluated, and the waste of subsequent production links caused by blind selection of unqualified fabrics by production enterprises is effectively avoided.
Drawings
FIG. 1 is a schematic diagram of the apparatus of the present invention;
the main reference numerals in the figures have the following meanings:
the test method comprises the following steps of 1-a clamp, 2-a cam, 3-a fabric to be tested, 4-a cam swing control device, 5-a motor, 6-a transmission belt, 7-a frame body and 8-a support.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and examples.
As shown in fig. 1: the embodiment is a device for dynamically testing the quality of fabric, which comprises a frame body 7, wherein the tops of two side walls of the frame body 7 are respectively provided with a clamp 1 for clamping the fabric, two supports 8 are arranged between the two side walls of the frame body 7, the top of each support 8 is rotatably connected with a cam 2 with a fan-shaped cross section, the cambered surface of each cam 2 is positioned at the upper part, the cambered surface of each cam 2 is higher than the fabric clamped by the two clamps 1, the lower part of each cam 2 is rotatably connected with the corresponding support 8 through a wheel shaft, one end of each wheel shaft extends to the outer side surface of each support 8, the wheel shafts extending to the outer side surfaces of the supports 8 are respectively in key connection with a driving wheel, the two driving wheels are positioned at the same side of each support 8, a motor 5 is arranged on the frame body 7 between the two supports 8, the output shaft of the motor 5 is, the motor 5 controls the positive rotation or the negative rotation to drive the two cams 2 to synchronously swing through the cam swing control device 4.
The driving wheel in this embodiment is a double row gear, the driving wheel is a gear, and the transmission belt 6 is a toothed belt.
In this embodiment, the swing angle of the cam 2 is in the range of-30 ° to 30 °.
The motor 5 in this embodiment is a worm gear reduction motor.
In this embodiment, the diameter of the arc surface of the cam 2 is 10cm, and the thickness of the cam 2 is 10 cm.
In this embodiment, the center distance between the two cams 2 is 30cm, and the distance between the two clamps 1 is 50 cm.
A method for dynamically testing the quality of fabric comprises the following steps:
(1) placing the fabric 3 to be tested in a relaxed state in a thermostatic chamber for at least 24 hours;
(2) the method comprises the following steps of shearing a fabric to be tested 3 taken out of a thermostatic chamber, folding the fabric in half, enabling a crease to be parallel to the width direction of the fabric to be tested 3, sewing the fabric to be tested 3, clamping and fixing two ends of the sewn fabric to be tested 3 through clamps 1 on two side walls of a frame body 7 respectively, enabling the clamped and fixed fabric to be tested 3 to be in a stretching state, and enabling the cambered surface of a cam 2 to be in contact with the lower surface of the fabric to be tested 3;
(3) the motor 5 is controlled to start through the cam swing control device 4, the motor 5 rotates forwards or reversely to drive the two cams 2 to swing synchronously, and the cambered surfaces of the cams 2 repeatedly rub the lower surface of the fabric 3 to be tested;
(4) the cam 2 stops after swinging for 2000 times, whether the loosening, the breakage and the leakage of fabric yarns and the phenomena of sewing slippage, careless breakage and damage occur on the lower surface and the sewing part of the fabric 3 to be tested after friction is checked, if so, the test result is recorded for less than 2000 times, and the test is finished; if the fabric yarn does not appear, the cam 2 is continuously swung to 4000 times in the mode of the step (3), during the period, the cam 2 is swung for 500 times to check whether the fabric yarn loosening, breaking and leaking phenomena, sewing slippage, careless breakage and damage occur on the lower surface and the sewing part of the fabric 3 to be tested, if so, the corresponding test result times are recorded, and the test is finished; if the fabric yarn does not appear, the cam 2 is continuously swung to 8000 times in the step (3), during the period, the cam 2 is swung for 1000 times to check whether the fabric yarn loosening, breaking and leaking phenomena, sewing slippage, careless breakage and damage occur on the lower surface and the sewing part of the fabric 3 to be tested, if so, the corresponding test result times are recorded, and the test is finished; if not, recording the test result > 8000 times, and completing the test.
In the implementation method, the result that the fabric and sewing quality at the cambered surface friction position of the fabric 3 to be tested and the two cams 2 is the first problem is taken as the final report result.
In the present embodiment, the temperature of the thermostatic chamber is 20. + -. 1 ℃ and the humidity is 65. + -. 2% RH.
In the present embodiment, the swing speed of the cam 2 is 100 reciprocations/min, and in practical application, it is also possible to select 50 reciprocations/min or 30 reciprocations/min, or select other swing speeds within the range of 30-100 reciprocations/min.
In the implementation method, the sewing position for sewing the fabric to be tested 3 is 2.5 cm away from the folded fabric to be tested 3, and sewing is carried out in parallel to the crease, and the sewing mode is a single sewing mode which is carried out by adopting a 14-gauge sewing needle and a 16.3tex multiplied by 3 sewing thread.
Application examples
Selecting a piece of dark blue covering yarn fabric, wherein the yarn is a conventional cotton fiber covered spandex filament, the weave structure is 1/2 right twill, and the gram weight is 300g/m2The fabric is used for sewing jeans, and the testing steps are as follows:
1. placing the fabric in a relaxed state in a constant temperature chamber (20 +/-1 ℃, 65 +/-2% RH) for at least 24 hours;
2. respectively shearing a 20cm x 65cm sample along the warp and weft yarn directions at least 15cm away from the selvedge, wherein one group is a warp sample, and the other group is a weft sample; firstly, after a warp-wise sample is folded in half, sewing the sample 2.5 cm from a crease and parallel to the crease, sewing by adopting a single sewing mode, a 14-grade sewing needle and a 16.3tex multiplied by 3 suture, then clamping two ends of a short edge on two fixing clamps of a testing device, wherein the selvedge is flush with the edges of the clamps, and the distance between the clamps is 50cm, so that the fabric is ensured to be stretched but not stretched;
3. starting a cam swing control device, setting the swing speed to be 30 reciprocating/min, and starting testing;
4. after swinging for 2000 times, checking that the surface of the fabric has no core yarn leakage, no slippage, slippage and the like when sewing, continuously testing for 4000 times, and checking the core yarn leakage and slippage condition of a sewing part at intervals of 500 times, wherein the core yarn leakage and slippage condition of the sewing part are still not generated; continuing the test, checking once at intervals of 1000 times during the test, and finding that the two worn parts have beige core yarn leakage after swinging for 6000 times;
5. after the test is finished, recording the warp direction test result of the fabric to be less than 6000 times;
6. testing the fabric weft-wise test sample according to the steps, wherein the test result is less than 6000 times;
7. the test results are recorded as warp cladding performance less than 6000 times and weft cladding performance less than 6000 times.
The implementation method mainly comprises the steps of testing the covering performance of the covering yarn fabric, horizontally clamping the covering yarn fabric with a specified size, fixing two ends of the covering yarn fabric, controlling a motor to rotate forwards or reversely by a cam swing control device so as to realize the function of setting the swing frequency and the swing frequency of a cam, effectively clamping a light and thin fabric to be tested by a clamp, observing the fabric and sewing quality conditions after the fabric tension reciprocating change action after the cam friction action with a certain roughness on the surface, and evaluating the quality conditions of yarn loosening, breakage, leakage, sewing slippage, stitch slippage, breakage and the like by combining the set swing frequency of the cam; the method simulates the fabric and sewing quality conditions when the positions of buttocks and the like are stretched and rubbed in the actual wearing process, particularly the lower garment after the textile fabric is made into the ready-made garment through the swinging action of the two cams which are arranged in parallel.
The invention uses the double-cam mechanical structure to simulate the use of the parts such as the buttocks, the elbows, the knees and the like on the fabric when a human body wears the fabric, synchronously detects the fabric performance and the sewing quality when the fabric and the fabric are subjected to the coupling mechanical action such as stretching, twisting, friction and the like after being sewn, has good detection effect and high efficiency, overcomes the defects of the existing method and instrument test, effectively solves the problem of the dynamic test of the fabric and the sewing quality when the fabric and the fabric are subjected to the coupling mechanical action such as stretching, twisting, friction and the like after being sewn by using the double-cam mechanical structure to simulate the use of the parts such as the buttocks, the elbows, the knees and the like when the human body wears the fabric, has good detection effect and high efficiency, has the advantages of science, convenience and accuracy, and provides scientific fabric (yarn) performance data before the fabric is sewn into the garment, meanwhile, the quality problem of the sewn fabric under the dynamic condition can be evaluated, and the waste of subsequent production links caused by blind selection of unqualified fabrics by production enterprises is effectively avoided.
The above description is only a preferred embodiment of the present patent, and it should be noted that, for those skilled in the art, several modifications and decorations can be made without departing from the inventive concept, and these modifications and decorations should also be regarded as the protection scope of the present patent.
Claims (8)
1. The utility model provides a device of dynamic test surface fabric quality which characterized in that: comprises a frame body, clamps for clamping the fabric are respectively arranged at the tops of two side walls of the frame body, two brackets are arranged between the two side walls of the frame body, the top of each bracket is rotationally connected with a cam with a sector-shaped section, the cambered surface of the cam is positioned at the upper part and is higher than the fabric of the fabric clamped by the two clamps, the lower part of the cam is rotationally connected with the bracket through a wheel shaft, one end of the wheel shaft extends to the outer side surface of the bracket, the wheel shafts extending to the outer side of the bracket are respectively in key connection with driving wheels, the two driving wheels are positioned at the same side of the bracket, a motor is arranged on the frame body between the two brackets, the output shaft of the motor is connected with a driving wheel by a key, the driving wheel and the driving wheels are positioned at the same side, the driving wheel and the two driving wheels are respectively in transmission connection through a transmission belt, the motor controls forward rotation or reverse rotation through the cam swing control device to drive the two cams to swing synchronously; the swing angle range of the cam is-30 degrees to 30 degrees; the diameter of the cambered surface of the cam is 10cm, and the thickness of the cam is 10 cm.
2. The apparatus of claim 1, wherein the drive wheel is a double row gear, the drive wheel is a gear, and the drive belt is a toothed belt.
3. The apparatus of claim 1, wherein the motor is a worm gear motor.
4. The apparatus of claim 1, wherein the two cams are spaced apart 30cm from each other and the two clamps are spaced apart 50cm from each other.
5. The method for dynamically testing the quality of the fabric based on the device of claim 1 is characterized by comprising the following steps:
(1) placing the fabric to be tested in a relaxed state in a constant temperature chamber for at least 24 hours;
(2) the method comprises the following steps of shearing a fabric to be tested taken out of a thermostatic chamber, folding the fabric in half, enabling a crease to be parallel to the width direction of the fabric to be tested, sewing the fabric to be tested, clamping and fixing two ends of the sewn fabric to be tested through clamps on two side walls of a frame body respectively, enabling the clamped and fixed fabric to be tested to be in a stretching state, and enabling an arc surface of a cam to be in contact with the lower surface of the fabric to be tested;
(3) the cam swing control device is used for controlling the motor to start and work, the motor rotates forwards or reversely to drive the two cams to swing synchronously, and the cambered surfaces of the cams repeatedly rub the lower surface of the fabric to be tested;
(4) stopping after the cam swings for 2000 times, checking whether the loosening, the breakage, the leakage, the sewing slippage, the careless crack and the damage of fabric yarns appear on the lower surface and the sewing part of the fabric to be tested after the friction, and if so, recording the test result for less than 2000 times, and finishing the test; if the fabric yarn does not appear, the cam is continuously swung for 4000 times in the mode of the step (3), whether the fabric yarn is loosened, broken and leaked, and the phenomena of sewing slippage, careless breakage and damage occur on the lower surface and the sewing part of the fabric to be tested or not is checked every 500 times of swinging of the cam in the period, if so, the corresponding test result times are recorded, and the test is completed; if the fabric yarn does not appear, the cam is continuously swung to 8000 times in the step (3), and whether the fabric yarn is loose, broken and leaked, and sewing slippage, careless breakage and damage of the fabric yarn occur on the lower surface and the sewing part of the fabric to be tested or not is checked every 1000 times of swinging of the cam in the period, if so, the corresponding test result times are recorded, and the test is completed; if not, recording the test result > 8000 times, and completing the test.
6. The method for dynamically testing the quality of the fabric according to claim 5, wherein the temperature of the thermostatic chamber is 20 +/-1 ℃ and the humidity is 65 +/-2% RH.
7. The method of claim 5, wherein the cam is oscillated at a speed of 30-100 reciprocations/min.
8. The method for dynamically testing the fabric quality as claimed in claim 5, wherein the sewing position for sewing the fabric to be tested is 2.5 cm away from the crease of the fabric to be tested after being folded in half, and sewing is performed in parallel to the crease, and the sewing mode is a single sewing mode performed by using a 14-gauge sewing needle and a 16.3tex x 3 suture.
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| CN110411881B (en) * | 2019-07-25 | 2022-04-12 | 成都海蓉特种纺织品有限公司 | Novel wear-resisting test device |
| CN110333094A (en) * | 2019-07-30 | 2019-10-15 | 江苏嘉萱智慧健康品有限公司 | Paper diaper waist quality testing evaluation method and its detection device |
| CN114088616B (en) * | 2021-11-03 | 2024-02-27 | 鲁泰纺织股份有限公司 | Device and method for detecting slipping performance of core spun yarn |
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