CN113109193A - Device and method for detecting pet-grabbing resistance of textile fabric - Google Patents
Device and method for detecting pet-grabbing resistance of textile fabric Download PDFInfo
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- CN113109193A CN113109193A CN202110452570.4A CN202110452570A CN113109193A CN 113109193 A CN113109193 A CN 113109193A CN 202110452570 A CN202110452570 A CN 202110452570A CN 113109193 A CN113109193 A CN 113109193A
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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
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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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0005—Repeated or cyclic
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Abstract
The invention relates to a device and a method for detecting pet scratching resistance of textile fabric, wherein the device comprises a scratching action module and a sample supporting module; the scratching action module comprises a bracket I, a bracket II, a bracket III, a fixing mechanism connected with the bracket III and a fingertip fixed by the fixing mechanism; bracket II is hinged to bracket I at point O1, and bracket II is hinged to bracket III at point O2; the bracket II is connected with the bracket I by a tension spring; the bracket II is connected with the bracket III by a pressure spring; the sample supporting module comprises a supporting column mounting disc, a main supporting column, a side supporting column and a gasket; the method of using the device is that on the sample supporting module, the peripheral surface of the fabric to be measured, which is integrally formed along the main supporting column and the side supporting column, is wrapped for a circle; adjusting the scratching action module to enable the fingertips and the fabric to be detected to form a certain angle and pressure; rotating the support column mounting disc to test a sample; the damage was then evaluated. The device simulates the action of scratching the textile by the pet, and has excellent operability and repeatability.
Description
Technical Field
The invention belongs to the technical field of textile detection, and relates to a device and a method for detecting pet-grabbing resistance of textile fabric.
Background
The diversification of life style and the requirement on life quality of people enable more and more pets to become one member of families of people. Flexible textiles such as curtains, sofa towels, tablecloths, chair cushions, bedspreads and sheets in living rooms are often subjected to the effects of grabbing, scratching, rubbing and the like of pets, and are easy to generate damages such as raising, snagging, scratching and even tearing in weak areas, so that the appearances of the textiles are seriously influenced, the durability of the textiles is reduced, and the product value is reduced. In addition, the broken textile may catch or snag small animals at portions such as fuzz, snag, and laceration, thereby injuring the small animals. Therefore, the textile fabric product with excellent pet scratching resistance is very important for pet raising families.
Different types of textile fabrics have different pet scratching resistance performances, but no special method for quantitatively detecting and evaluating the pet scratching resistance of the textile fabrics exists at present. The shape of a nail hammer device adopted by the existing detection method for the anti-snagging performance of the textile fabric is similar to that of a pet claw, but the cloth cover effect caused by mechanical snagging of the fabric by the device is far away from the damage effect of the pet claw on the cloth cover. At present, if the performance of the textile fabric for resisting scratching damage of pets needs to be evaluated, a trial mode is generally adopted, namely, a sample is tried in a pet raising family for a period of time, the surface damage degree of the sample is evaluated, the method is long in time consumption, and the randomness and the discreteness of the obtained result are high. Therefore, with the rapid development of pet economy, a method for rapidly, objectively and quantitatively detecting and evaluating the scratching damage resistance of the textile fabric to the pet is urgently needed in the field of textile home textiles.
Disclosure of Invention
Aiming at the problem that a detection method for the pet scratching resistance of home textile fabric is urgently needed at present, the invention provides a device and a method for detecting the pet scratching resistance of textile fabric.
In order to achieve the purpose, the invention adopts the following scheme:
a device for detecting pet scratching resistance of textile fabric comprises a scratching action module and a sample supporting module;
the scratching action module comprises an action supporting mechanism and a fingertip device;
the fingertip device comprises a fixing mechanism and a fingertip fixed by the fixing mechanism;
the action supporting mechanism comprises a bracket I, a bracket II and a bracket III, wherein the bracket II is hinged with the bracket I at a point O1 so that the bracket II can rotate around a point O1, and the bracket II is hinged with the bracket III at a point O2 so that the bracket III can rotate around a point O2; the bracket II is connected with the bracket I by a tension spring, the connection points are marked as O1 and O2 respectively, and the points O1, O1 and O2 form a triangle a; the bracket II is connected with the bracket III by a pressure spring, the connection points are marked as O3 and O4 respectively, and the points O2, O3 and O4 form a triangle b; the tension spring and the pressure spring are arranged on the opposite sides of the bracket II, and the connection positions of the tension spring and the pressure spring with the bracket II are both positioned between a point O1 and a point O2; the bracket III is connected with the fixing mechanism, and the fingertip fixedly connected with the fixing mechanism drives the bracket III to rotate around a point O2 through the upward and downward movement of the fingertip; (the angle of the fingertip relative to the vertical direction is adjusted, so that the scratching angle of the fingertip relative to the cloth surface to be measured is adjusted);
one end of the bracket III bears the elastic acting force of the pressure spring, and the other end bears the supporting force of the cloth surface to be detected transmitted by the fingertip device; the end where the fingertip device is located is an active end, and the bracket III generates a counterclockwise rotation trend and rotation action under the action of cloth cover supporting force; one end of the pressure spring is a driven end, and the trend and the rotation action of the anticlockwise rotation of the support III enable the pressure spring to be compressed and deformed so as to generate elastic supporting force on the end of the support III to resist the anticlockwise rotation of the support III; if the effect of the support force of the cloth surface on the fingertip device does not exceed the pressure-bearing range of the pressure spring, the bracket III maintains a balanced state under the two forces, so that the fingertip device can be ensured to effectively carve the cloth surface in the relative motion of forming a certain angle with the cloth surface, and the carving effect of the claw tips of the pet on the cloth surface is simulated; therefore, the pressure spring and the fingertip device form a pair of moments acting in opposite directions, rotation control of the support III with the point O2 as a hinge fulcrum is jointly implemented, and therefore fine adjustment of the pressure state between the fingertips 14 and the cloth surface to be measured is implemented.
Similarly, the tension spring and the bracket III including the fingertip device form a pair of moments acting in opposite directions, and the rotation control of the bracket II with the point O1 as a hinge fulcrum is jointly implemented, so that the pressure state of the fingertips 14 and the cloth cover is controlled and adjusted. The support III and the fingertip device form an active square moment, when the fingertip 14 slides from a concave position to a convex position on the surface of a sample to be measured, the support acting force of the cloth cover on the fingertip 14 is rapidly improved, the support force is transmitted to the support III through the fingertip device and acts on the support II through a bolt, and the support II is enabled to generate a trend of anticlockwise rotation and rotation action with a point O1 as a fulcrum; one end of the tension spring is a passive square moment, and the tension spring is stretched and deformed by the counterclockwise rotation trend and the rotation action of the bracket II so as to pull the bracket II to resist the counterclockwise rotation of the bracket II; the bracket II maintains a basic balance state under the reaction moment formed by the tension spring and the fingertip device-bracket III, and ensures that the fingertip 14 performs scoring action on the cloth surface 22 to be measured with enough pressure.
Therefore, a pair of reaction moments formed by the pressure spring and the fingertip device controls the support III to rotate by taking the point O2 as a hinge fulcrum, meanwhile, the tension spring and the fingertip device-support III form another pair of reaction moments, controls the support II to rotate by taking the point O1 as the hinge fulcrum, and the two groups of lever systems jointly and spontaneously control and adjust the pressure state between the fingertips and the cloth cover so as to ensure the simulated scratching action effect of the fingertips 14 on the cloth cover.
When the fingertips penetrate into the cloth cover, the fingertips are embedded into the cloth cover more deeply along with the continuous rotation of the sample supporting module, the resistance borne by the fingertips is increased instantly, the pressure borne by the pressure spring at the other end is increased simultaneously, when the pressure borne by the pressure spring exceeds the pressure bearing range of the pressure spring, the pressure spring is bent laterally, the supporting force for one end of the support III where the pressure spring is located is reduced instantly, the support III is rotated anticlockwise, the fingertip device is lifted and separated from the damaged area rapidly, the locking caused by the embedding of the fingertips into the cloth cover is eliminated, and the scratching treatment of the sample is ensured to be continuously carried out;
in the actual life, when the pet claw grabs textiles such as sofa towels, quilt covers and the like, the nail or even the claw of the pet claw can sink into the crevasse, and in this case, the small animal can voluntarily lift the claw, so that the claw is ensured not to be hooked or entangled by fibers, yarns and the like in the crevasse; the lever system formed by the pressure spring, the bracket III and the fingertip device simulates the behavior of spontaneously lifting and releasing the claw of a small animal when the claw falls into a textile crevasse, and simultaneously solves the locking problem caused by the fact that the fingertip device falls into a cloth sample;
the sample supporting module comprises a shaft core and two supporting column mounting discs fixed on the shaft core; a cylindrical main support column is fixedly arranged between the two support column mounting discs and sleeved on the shaft core; the n side supporting columns are further arranged between the two supporting column mounting discs and are located on the outer side of the peripheral surface of the main supporting column, and when the to-be-detected fabric is wrapped on the peripheral surface formed by the main supporting column and the side supporting columns integrally, the side supporting columns are used for supporting the to-be-detected fabric to form an uneven surface;
the tip of the fingertip points to the peripheral surface of the main supporting column;
in the actual life, when a small animal is pounded or played on the surface of textiles such as a carpet, a bed or a sofa, in order to ensure the balance and stability of the body, the claw can be stretched and retracted voluntarily or the force on the claw is increased to increase the holding force of the fingertip on the contact surface, thereby scratching and damaging the cloth surface; firstly, a sample supporting surface which can rotate ceaselessly relative to a fingertip device is constructed through a rotatable cylindrical main support column, and then an uneven sample supporting surface is constructed by adding side support columns around the main support column on the basis of a circular supporting surface; in the relative movement of the fingertip to the surface of the sample, the fingertip is obviously improved by the resistance of the cloth cover in the rising stage of the raised part on the surface, and the relative ruling angle is reduced, so that scratching damage to the cloth cover is more easily caused; the resistance is reduced in the convex descending stage, and the scratching effect is weakened, so that the effects of instantly gripping the cloth cover and subsequently releasing the claws by the small animals for keeping the body stable are simulated; therefore, in the rotating process of the sample supporting module, the surfaces of the samples are scratched by the fingertips with the relative pressure which changes in a circulating mode, and the scratching effect on the cloth surface is formed.
As a preferred technical scheme:
the device for detecting the pet-grabbing resistance of the textile fabric is characterized in that the bracket II is hinged with the bracket I at a point O1 through a bolt A; bracket II is hinged with bracket III by bolt B at point O2; two ends of the tension spring are respectively connected with the bracket I and the bracket II through bolts C and D; two ends of the pressure spring are respectively connected with the bracket II and the bracket III through bolts E and F.
According to the device for detecting the pet scratching resistance of the textile fabric, in order to meet the requirements of different samples to be detected on scratching angles and scratching forces, the sliding rail Y is arranged in the length direction of the support I, and the sliding rail X is arranged in the length direction of the support II; the bolt C is connected with the slide rail Y in a sliding way and can be fixed at a designated position, the bolt C translates in the slide rail Y to adjust the position, and the position is fixed when the bolt C is used; the bolt D and the bolt E are both connected with the slide rail X in a sliding manner and can be fixed at a specified position, the bolt D and the bolt E translate in the slide rail X to adjust the position, and the position is fixed when the bolt D and the bolt E are used; the bolt F is fixedly connected with the bracket III; the tensile length of the tension spring can be changed by adjusting the positions of the bolt C in the slide rail Y and the bolt D in the slide rail X, so that the tension of the tension spring is adjusted, namely the pressure of fingertips on the surface of a sample is adjusted; the invention can adjust the compression length and the elastic force direction of the pressure spring by adjusting the position of the bolt E on the slide rail X, thereby adjusting the magnitude and the direction of the output elastic reaction force of the pressure spring under the condition of bearing external pressure.
According to the device for detecting the pet-grabbing resistance of the textile fabric, the fixing mechanism is composed of a fixing block I, a fixing block II and a bolt H; the fingertips are fixedly arranged between the fixing block I and the fixing block II by the bolts H; and the bolt G is used for fixedly installing the fixing mechanism on the bracket III.
According to the device for detecting the pet-grabbing resistance of the textile fabric, in order to adjust the concave-convex degree of the surface of the fabric to be detected, the side supporting columns are cylindrical, the supporting column mounting disc is disc-shaped, the central axes of the shaft core, the main supporting column and the supporting column mounting disc are coincided, and the central axes of the side supporting columns are parallel to the central axes of the side supporting columns and the supporting column mounting disc; n grooves are formed in the strut mounting plate corresponding to the positions of the side struts; the side stay is arranged in the groove of the stay mounting plate through a nut; the distance between each side brace and the main brace is adjusted through the position of adjusting nut in the groove, so that the degree of the concave-convex degree of the surface of the liner and the sample around the main brace and the side brace is adjusted, the angle and the force value of scratching force caused by the fingertips to the cloth surface are adjusted, and the test requirement of the flexibility of the anti-pet scratching of different types of fabrics is met.
The device for detecting the pet-grabbing resistance of the textile fabric further comprises a sliding rail Z parallel to the shaft core of the sample supporting module, and one end of the support I is located in the sliding rail Z. The support I can translate along the sliding rail Z, so that the scratching action module is driven to translate, and the fingertip device can be translated to other parts of the sample after scratching the sample to continuously scratch the sample.
According to the device for detecting the pet-grabbing resistance of the textile fabric, the finger tips are rod bodies with sharp ends. The finger tip shape is designed into various shapes simulating the animal nail according to the test requirement. The number of fingertips is 1-5, and the parallel arrangement.
According to the device for detecting the pet-grabbing resistance of the textile fabric, the sample supporting module further comprises a motor and a revolution counter for calculating the revolution of the stay mounting disc;
the output shaft of the motor is fixedly connected with the shaft core to drive the shaft core to rotate, and then the shaft core drives the stay mounting disc to rotate, namely the main stay and the side stay rotate.
The device for detecting the pet-grabbing resistance of the textile fabric comprises a sample supporting module, a sample detecting module and a detecting module, wherein the sample supporting module comprises a lining; the pad is a strip-shaped soft pad filled with down; the pad is positioned between the fabric to be detected and the circumferential surface formed by the main supporting column and the side supporting column.
The filler of the pad comprises wool, cotton, wool, silk or chemical fiber; the outer layer of the pad (i.e., the layer adjacent to the fabric sample to be tested) is made of a wear-resistant canvas. On one hand, the pad supports the sample to be tested, so that the sample to be tested is prevented from being soft and collapsed or being easily pierced by fingertips, and meanwhile, the pad is close to the situation that textiles such as bed sheets, sofa towels and blankets are laid on the soft pad in practical application, and the real situation is reflected.
The device for detecting the pet-grabbing resistance of the textile fabric is characterized in that n is more than or equal to 3.
The method for detecting the pet-grabbing resistance of the textile fabric by adopting the device for detecting the pet-grabbing resistance of the textile fabric comprises the following steps of firstly wrapping the to-be-detected fabric on the circumferential surface integrally formed by the main supporting column and the side supporting column by a circle on the sample supporting module; then adjusting the scratching action module to enable the tip ends of the fingertips to press the fabric to be detected and to form a certain angle and a certain pressure; then, rotating the support column mounting disc to obtain a scratched sample; subsequently, evaluating the surface damage degree of the scratched sample;
the scratching action module is used for simulating the main limb part of a pet for scratching the textile, wherein a simulated fingertip is pressed on the surface of a sample to be tested supported by the sample support module at a certain pressure, the surface of the sample to be tested is coated on the surface of the sample support module which can continuously rotate, the surface to be tested faces outwards and is in contact with the fingertip, when the sample support module drives the sample to rotate at a specified rotating speed, the fingertip scratches the surface of the sample relatively at the specified pressure, and because the scratching resistance of different types of samples is different, the fingertips can respectively cause no mark, shallow mark, scratch, yarn hooking, single yarn breakage, multiple yarn breakage, short breakage, long breakage and other damages on the surface of the sample, so that the scratching resistance of the surface to be tested is evaluated and graded;
certain angle and certain pressure mean: according to the requirement of scratching actions simulated by testers, including pet types, sizes and the like, the pressure and the angle of fingertips to a cloth surface are set, generally speaking, the fingertips are in the +/-10-degree direction of a vertical to-be-measured fabric, the pressure is set to be a reference pressure value which is the pressure value which is used for a certain type and a certain size of pets to cause obvious scratches to a thin bed sheet fabric and not to generate obvious cloth surface damage to a thick and hard carpet fabric, and the adjustable parameters comprise: the positions of the bolts, the bolts and the bolts in the support rails, the elastic coefficients of the tension springs and the pressure springs, the forms of the lower ends of the fingertips, the number of the fingertips, the relative angles of the fingertip devices and the support III, the positions of the nuts installed in the support column installing plate and the thickness and hardness of the liner can be set through pre-experiments;
the rotating speed of the rotating stay mounting disc is not higher than 10 revolutions per minute, the rotating speed can be adjusted and set according to the action amplitude and the speed degree of the pet required to be simulated in the test, and the stay mounting disc is controlled to rotate by a motor through a shaft core, so that the main stay and the side stay as well as the liner and the fabric sample are driven to rotate;
the evaluation means: subjecting the fabric to be tested to scratching treatment of simulated pets under a specified degree, observing the surface of a sample after a certain time, and evaluating or grading the damage state of the sample; or measuring the scratching degree (revolution) or scratching time required for enabling the sample to reach the set damage degree, and carrying out quantitative rating on the pet scratching resistance of the textile sample to be measured.
Advantageous effects
(1) The method for testing the pet scratching resistance can be used for rapidly, objectively and quantitatively detecting the pet scratching resistance effect of the household textile fabric, auxiliary materials and textile filling products, so that the scratching resistance function of the product is objectively evaluated, the pet scratching resistance function of the household fabric product is represented and evaluated in a quantitative rating mode, the problem that the method for detecting the pet scratching resistance performance of the product in the field of household textiles is lacked at present is solved, and the blank of the detection technology for detecting the pet scratching resistance performance of household textiles at home and abroad is filled;
(2) the method and the device for testing the scratching resistance of the pet can quickly and accurately evaluate the scratching resistance of the pet on the textile, the test result can guide the development of functional products for preventing the pet from damaging, and the scratching resistance finishing of the textile fabric is accurately implemented, so that the problems of insufficient finishing and excessive finishing of the scratching resistance after finishing such as coating, film coating and the like in the processing of the fabric can be avoided, the scratching resistance is improved, and meanwhile, the comfortable experience of the textile is not obviously influenced, so that an important test reference is provided for the development of household scratching resistance products for the pet;
(3) according to the invention, the limb action of scratching the textile by the pet is simulated, so that not only is the appearance effect of the limb action of the pet simulated, but also the scratching action effect of pets of various types and sizes on the surface of the textile can be simulated by adjusting the sizes of all parts of the limb, designing and selecting springs with different elastic coefficients, adjusting the pointing angle of fingertips and the like; a circularly rotating and non-flat fabric sample supporting surface is constructed through the main supporting columns, the side supporting columns and the gaskets, and the fabric sample supporting surface and fingertips on the fingertip device move relatively at an adjustable relative pressure and an adjustable angle, so that scratching treatment is performed on the fabric sample under an adjustable and controllable condition; therefore, the surface scratching device is suitable for scratching the surfaces of fabric samples by different types and sizes of pets and different action amplitudes;
(4) according to the invention, a lever system consisting of the pressure spring, the wrist support and the fingertip device not only ensures that the fingertip device performs scoring on the fabric to be tested within a specified pressure range, but also simulates the actions of spontaneously lifting and releasing claws when small animals sink into a textile breach, and solves the locking problem caused by the fact that the fingertip device sinks into the textile;
(5) the invention has the application range of bed textiles such as bedspreads, bed sheets, quilt covers, towelling coverlets, pillow towels and the like, room textiles such as carpets, sofa cloth, tablecloth and the like, and clothes textiles such as coats, trousers, home wear and the like; compared with the method for trying in pet raising families, the method has excellent operability and repeatability, and avoids data discreteness caused by differences of test individuals of different pet raising families, different types of pets and the like, so that the method has great advantages and popularization potential.
Drawings
FIG. 1 is a schematic view of the construction of a specimen scratching pretreatment device according to the present invention;
FIG. 2 is a schematic diagram of a fingertip device of the present invention;
FIG. 3 is a schematic structural view (front view) of a sample support module of the present invention;
FIG. 4 is a schematic structural view (side view) of a sample support module of the present invention;
the device comprises a support I, a support II, a support III, a tension spring 4, a pressure spring 5, a bolt A6, a bolt B7, a bolt G8, a bolt C9, a bolt D10, a bolt E11, a bolt F12, a slide rail Z13, a fingertip 14, a fixed block I15, a fixed block II 16, a bolt H17, a main supporting column 18, a side supporting column 19, a shaft core 20, a gasket 21, a fabric sample 22, a nut 23, a supporting column mounting plate 24, a motor 25 and a revolution counter 26.
Detailed Description
The invention will be further illustrated with reference to specific embodiments. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
A device for detecting pet scratching resistance of textile fabric is shown in figures 1-4 and comprises a scratching action module, a sample supporting module, a sliding rail X, a sliding rail Y and a sliding rail Z13;
the scratching action module comprises an action supporting mechanism and a fingertip device;
the fingertip device includes a fixing mechanism and a fingertip 14 fixed by the fixing mechanism;
the action supporting mechanism comprises a bracket I1, a bracket II 2 and a bracket III 3, wherein the bracket II 2 is hinged with the bracket I1 by a bolt A6 at a point O1 so that the bracket II 2 can rotate around a point O1, and the bracket II 2 is hinged with the bracket III 3 by a bolt B7 at a point O2 so that the bracket III 3 can rotate around a point O2; two ends of the tension spring 4 are respectively connected with the bracket I1 and the bracket II 2 through bolts C9 and D10, connecting points are respectively marked as O1 and O2, and points O1, O1 and O2 form a triangle a; two ends of the pressure spring 5 are respectively connected with the bracket II 2 and the bracket III 3 through bolts E11 and F12, the connection points are respectively marked as O3 and O4, and the points O2, O3 and O4 form a triangle b; the tension spring 4 and the pressure spring 5 are arranged on the opposite sides of the bracket II 2, and the connection positions of the tension spring 4 and the pressure spring 5 and the bracket II 2 are both positioned between a point O1 and a point O2; the bracket III 3 is fixedly connected with the fixing mechanism through a bolt G8, and the fingertip 14 fixedly connected with the fixing mechanism drives the bracket III 3 to rotate around a point O2 through the up-and-down movement of the fingertip;
the sample supporting module comprises a shaft core 20, two disc-shaped supporting column mounting discs 24 fixed on the shaft core 20, a cylindrical main supporting column 18, a cylindrical side supporting column 19, a motor 25, a revolution counter 26 and a gasket 21;
the main support column 18 is fixedly arranged between the two support column mounting discs 24 and sleeved on the shaft core 20; n side struts 19 are further arranged between the two strut mounting discs 24, and the side struts 19 are located on the outer side of the peripheral surface of the main strut 18 and used for wrapping the fabric to be detected on the peripheral surface formed by the main strut 18 and the side struts 19;
the number of the side supporting columns 19 is n (n is more than or equal to 3), and the side supporting columns are arranged between the two supporting column mounting discs 24; the n side stay columns 19 are all positioned outside the peripheral surface of the main stay column 18, and when the to-be-detected fabric is wrapped on the peripheral surface formed by the main stay column 18 and the side stay columns 19 integrally, the side stay columns 19 are used for supporting the to-be-detected fabric to form an uneven surface; the central axes of the shaft core 20, the main supporting column 18 and the supporting column mounting disc 24 are superposed, and the central axis of each side supporting column 19 is parallel to the central axes of the three above; n grooves are arranged on the strut mounting plate 24 corresponding to the positions of the side struts 19; the side struts 19 are arranged in grooves of the strut mounting disc 24 through nuts 23, the distance between each side strut 19 and the main strut 18 is adjusted by adjusting the positions of the nuts 23 in the grooves, so that the degree of the concave-convex degree of the liner 21 and the surface of the sample surrounding the main strut and the side struts for a circle is adjusted, the angle and the force value of scratching force caused by fingertips to the cloth surface are adjusted, and the test requirement of the flexibility of the different types of fabrics for resisting pets is met;
an output shaft of the motor 25 is fixedly connected with the shaft core 20 to drive the shaft core 20 to rotate, and then the shaft core 20 drives the strut mounting disc 24 to rotate, namely the main strut 18 and the side strut 19 rotate;
the pad 21 is a strip-shaped cushion filled with down; the spacer 21 is located between the fabric to be measured and the circumferential surface of the main stay 18 and the side stay 19 integrally formed. The filler of the pad 21 comprises wool, cotton, wool, silk or chemical fibers; the outer layer of the pad 21 (i.e. the layer adjacent to the fabric sample to be tested) is made of abrasion-resistant canvas; the pad 21 supports the sample to be tested, prevents the sample from being soft and collapsing or being easily pierced by fingertips, and is close to the situation that textiles such as bed sheets, sofa towels, blankets and the like are laid on soft pads in practical application, so that the real situation is reflected;
the fingertips 14 are rod bodies provided with tip ends, the tip ends point to the fabric to be tested, and the shapes of the fingertips 14 are designed into various shapes simulating animal nails according to test requirements. The number of the fingertips 14 is 1-5, and the fingertips are arranged in parallel;
the fixing mechanism is composed of a fixing block I15, a fixing block II 16 and a bolt H17; the finger tip 14 is fixedly arranged between the fixing block I15 and the fixing block II 16 by a bolt H17;
the slide rail Y is arranged in the length direction of the bracket I1, and the slide rail X is arranged in the length direction of the bracket II 2; the bolt C9 is connected with the slide rail Y in a sliding way and can be fixed at a designated position, the bolt C9 translates in the slide rail Y to adjust the position, and the position is fixed when the bolt C9 is used; the bolt D10 and the bolt E11 are both connected with the slide rail X in a sliding way and can be fixed at a designated position, the bolt D10 and the bolt E11 translate in the slide rail X to adjust the position, and the position is fixed when the bolt D10 and the bolt E11 are used; the bolt F12 is fixedly connected with the bracket III 3; the tensile length of the tension spring 4 can be changed by adjusting the positions of the bolt C9 in the slide rail Y and the bolt D10 in the slide rail X, so that the tension of the tension spring can be adjusted, namely the pressure of the fingertip 14 on the surface of a sample can be adjusted; the compression length and the elastic force direction of the pressure spring 5 can be adjusted by adjusting the position of the bolt E11 on the slide rail X, so that the magnitude and the direction of the output elastic reaction force of the pressure spring under the condition of bearing external pressure are adjusted;
the slide rail Z13 is parallel to the shaft core 20 of the sample support module, and one end of the bracket I1 is positioned in the slide rail Z13; the support I1 can translate along the sliding rail Z13, so that the scratching action module is driven to translate, and the fingertip device can be translated to other parts of the sample after scratching the sample to continue scratching the sample.
The method for detecting the pet-grabbing resistance of the textile fabric by adopting the device for detecting the pet-grabbing resistance of the textile fabric comprises the steps that on a sample supporting module, the to-be-detected fabric is wrapped for a circle along the circumferential surface formed by the main supporting column 18, the side supporting column 19 and the liner 21; then, the scratching action module is adjusted to enable the tip of the fingertip 14 and the fabric to be detected to form a certain angle and a certain pressure; then the support column mounting disc 24 is rotated to obtain a scratched sample; subsequently, evaluating the surface damage degree of the scratched sample;
the scratching action module is used for simulating the main limb part of a pet for scratching the textile, wherein a simulated fingertip is pressed on the surface of a sample to be tested supported by the sample support module at a certain pressure, the surface of the sample to be tested is coated on the surface of the sample support module which can continuously rotate, the surface to be tested faces outwards and is in contact with the fingertip, when the sample support module drives the sample to rotate at a specified rotating speed, the fingertip scratches the surface of the sample relatively at the specified pressure, and because the scratching resistance of different types of samples is different, the fingertips can respectively cause no mark, shallow mark, scratch, yarn hooking, single yarn breakage, multiple yarn breakage, short breakage, long breakage and other damages on the surface of the sample, so that the scratching resistance of the surface to be tested is evaluated and graded;
certain angle and certain pressure mean: according to the requirement of scratching actions simulated by testers, including pet types, sizes and the like, the pressure and the angle of fingertips to a cloth surface are set, generally speaking, the fingertips are in the +/-10-degree direction of a vertical to-be-measured fabric, the pressure is set to be a reference pressure value which is the pressure value which is used for a certain type and a certain size of pets to cause obvious scratches to a thin bed sheet fabric and not to generate obvious cloth surface damage to a thick and hard carpet fabric, and the adjustable parameters comprise: the positions of the bolts C9, D10 and E11 in the support track, the elastic coefficients of the tension spring 4 and the pressure spring 5, the shapes of the lower ends of the fingertips 14, the number of the fingertips, the relative angles of the fingertip devices and the support III 3, the positions of the nuts 23 installed in the strut mounting disc 24 and the thickness and hardness of the gasket 21 can be set through pre-experiments;
the rotating speed of the rotating stay mounting disc 24 is not higher than 10 revolutions per minute, the rotating speed can be adjusted and set according to the action amplitude and the speed degree of the pet required to be simulated in the test, and the motor 25 controls the stay mounting disc 24 to rotate through the shaft core 20, so that the main stay 18, the side stay 19, the liner 21 and the fabric sample 22 are driven to rotate;
the evaluation means: subjecting the fabric to be tested to scratching treatment of simulated pets under a specified degree, observing the surface of a sample after a certain time, and evaluating or grading the damage state of the sample; or measuring the scratching degree (revolution) or scratching time required for enabling the sample to reach the set damage degree, and carrying out quantitative rating on the pet scratching resistance of the textile sample to be measured.
Claims (11)
1. A device for detecting pet-grabbing resistance of textile fabric is characterized in that: the test device comprises a scratching action module and a sample supporting module;
the scratching action module comprises an action supporting mechanism and a fingertip device;
the fingertip device comprises a fixing mechanism and a fingertip (14) fixed by the fixing mechanism;
the motion supporting mechanism comprises a bracket I (1), a bracket II (2) and a bracket III (3), wherein the bracket II (2) is hinged with the bracket I (1) at a point O1 to enable the bracket II (2) to rotate around a point O1, and the bracket II (2) is hinged with the bracket III (3) at a point O2 to enable the bracket III (3) to rotate around a point O2; the bracket II (2) is connected with the bracket I (1) by a tension spring (4), the connection points are respectively marked as O1 and O2, and the points O1, O1 and O2 form a triangle a; the bracket II (2) is connected with the bracket III (3) by a pressure spring (5), the connection points are respectively marked as O3 and O4, and the points O2, O3 and O4 form a triangle b; the tension spring (4) and the pressure spring (5) are arranged on the opposite sides of the bracket II (2), and the connection positions of the tension spring (4) and the pressure spring (5) and the bracket II (2) are both positioned between a point O1 and a point O2; the bracket III (3) is connected with the fixing mechanism, and the fingertip (14) fixedly connected with the fixing mechanism drives the bracket III (3) to rotate around a point O2 through the up-and-down movement of the fingertip;
the sample supporting module comprises a shaft core (20) and two supporting column mounting discs (24) fixed on the shaft core (20); a cylindrical main support column (18) is fixedly arranged between the two support column mounting discs (24) and sleeved on the shaft core (20); n side struts (19) are further arranged between the two strut mounting discs (24), and the side struts (19) are all positioned on the outer side of the peripheral surface of the main strut (18);
the tips of the fingertips (14) point to the periphery of the main stay (18).
2. The device for detecting the pet-grasping resistance of the textile fabric according to claim 1, wherein the bracket II (2) is hinged with the bracket I (1) by a bolt A (6) at a point O1; bracket II (2) is hinged to bracket III (3) at point O2 by bolt B (7); two ends of the tension spring (4) are respectively connected with the bracket I (1) and the bracket II (2) through a bolt C (9) and a bolt D (10); two ends of the pressure spring (5) are respectively connected with the bracket II (2) and the bracket III (3) through bolts E (11) and F (12).
3. The device for detecting the pet-grabbing resistance of the textile fabric according to claim 2, wherein a slide rail Y is arranged in the length direction of the support I (1), and a slide rail X is arranged in the length direction of the support II (2); the bolt C (9) is connected with the slide rail Y in a sliding way and can be fixed at a designated position; the bolt D (10) and the bolt E (11) are connected with the slide rail X in a sliding mode and can be fixed at a designated position; and the bolt F (12) is fixedly connected with the bracket III (3).
4. The device for detecting the pet-grabbing resistance of the textile fabric according to claim 1, wherein the fixing mechanism is composed of a fixing block I (15), a fixing block II (16) and a bolt H (17); the finger tips (14) are fixedly arranged between the fixing block I (15) and the fixing block II (16) by bolts H (17); and the bolt G (8) fixedly installs the fixing mechanism on the bracket III (3).
5. The device for detecting the pet grabbing flexibility of the textile fabric according to claim 1, wherein the side supporting columns (19) are cylindrical, the supporting column mounting plate (24) is disc-shaped, the central axes of the shaft core (20), the main supporting column (18) and the supporting column mounting plate (24) are coincident, and the central axis of each side supporting column (19) is parallel to the central axis of the upper three; n grooves are arranged on the strut mounting plate (24) corresponding to the positions of the side struts; the side brace (19) is mounted in a groove of the brace mounting plate (24) through a nut (23).
6. The device for detecting the pet-grabbing resistance of the textile fabric according to claim 1, further comprising a sliding rail Z (13) parallel to the shaft core (20) of the sample support module, wherein one end of the bracket I (1) is located in the sliding rail Z (13).
7. A device for detecting the resistance of textile fabric to pet-grip flexing according to claim 1, wherein the finger tips (14) are rod bodies provided with pointed ends.
8. A device for detecting the pet-grab resistance of a textile fabric according to claim 1, wherein the sample support module further comprises a motor (25) and a revolution counter (26) for counting the revolutions of the stay mounting plate (24);
the output shaft of the motor (25) is fixedly connected with the shaft core (20).
9. A device for detecting the resistance of a textile fabric to pet-grip flexibility as claimed in claim 1, wherein the sample support module further comprises a pad (21); the pad (21) is a strip-shaped soft pad filled with down; the pad (21) is located on the peripheral surface of the main stay (18) and the side stay (19) which are integrally formed.
10. The device for detecting the pet-grab resistance of the textile fabric according to claim 1, wherein n is more than or equal to 3.
11. The method for detecting the pet-grasping resistance of the textile fabric by using the device for detecting the pet-grasping resistance of the textile fabric as claimed in any one of claims 1 to 10, is characterized in that: on the sample supporting module, firstly wrapping a circle of the fabric to be measured on the circumferential surface integrally formed by the main supporting column (18) and the side supporting column (19); then, the scratching action module is adjusted to enable the tip of the fingertip (14) to press the fabric to be detected and to form a certain angle and a certain pressure; then, rotating the support column mounting disc to obtain a scratched sample; the scratched samples were then evaluated for surface damage.
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