A cashmere fabric shrinkage testing device and testing method

Abstract

The present application relates to the technical field of fabric shrinkage test, and provides a cashmere fabric shrinkage test device and test method, which comprises a test table, a laying area for laying cashmere fabric samples is arranged on the test table, a plurality of installation grooves are arranged in the laying area, a standard plate is arranged in the installation groove, a measuring element for measuring the pressure borne by the standard plate is also arranged in the installation groove, the cashmere fabric samples are laid in the laying area before washing, the average value of the data measured by the plurality of measuring elements is recorded as F1, the cashmere fabric samples are laid in the laying area again after washing, the average value of the data measured by the plurality of measuring elements is recorded as F2, the shrinkage of the measured cashmere fabric is defined by the difference between F1 and F2, the greater the difference, the more serious the shrinkage phenomenon of the measured cashmere fabric, the test operation is simple and convenient, and the cashmere fabric shrinkage test efficiency is effectively improved.

Description

Technical Field

[0001] This invention relates to the field of fabric shrinkage testing technology, specifically to a shrinkage testing device and method for cashmere fabrics. Background Technology

[0002] Shrinkage rate is a crucial indicator for evaluating the quality of cashmere fabrics, guiding production processes, and improving finishing techniques. Accurate and efficient measurement of the shrinkage rate of cashmere fabrics is of great significance for ensuring product quality.

[0003] Currently, the shrinkage rate of cashmere fabrics is usually tested using the marking measurement method. The basic operation procedure is as follows: multiple sets (usually three or more sets) of marking points with a specified spacing are pre-marked on the cashmere fabric sample along the warp and weft directions to form a marking point array. Then, the marked sample is washed, dehydrated, and dried according to standard procedures. After the treatment is completed, the actual distance between each set of marking points before and after washing is measured and recorded. Finally, the difference in the distance between each set of marking points is calculated, and the average of the differences of all groups is obtained to evaluate the shrinkage rate of the cashmere fabric in the warp and weft directions. The above testing method is relatively cumbersome and seriously restricts the efficiency of cashmere fabric shrinkage rate testing.

[0004] Therefore, this invention proposes a shrinkage testing device and method for cashmere fabrics to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a device and method for testing the shrinkage rate of cashmere fabrics, so as to solve the above-mentioned problems.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A cashmere fabric shrinkage testing device includes a testing platform with a laying area for placing cashmere fabric samples. The laying area has multiple mounting slots, each containing a matching standard plate. The upper side of the standard plate is flush with the upper side of the laying area. The mounting slots also contain measuring elements for measuring the pressure exerted on the standard plate. Before washing, the cashmere fabric sample is laid in the laying area, and the average value of the data measured by the multiple measuring elements is recorded as F1. After washing, the cashmere fabric sample is laid in the laying area again, and the average value of the data measured by the multiple measuring elements is recorded as F2. The shrinkage rate of the cashmere fabric is defined by the difference between F1 and F2.

[0007] In one alternative: the testing equipment further includes a temperature and humidity control component for placing the laying area under set temperature and humidity environmental conditions. The temperature and humidity control component includes a cover that is lifted and installed above the testing platform to cover the laying area. The cover is provided with a temperature control component for controlling the internal temperature of the cover and a humidity control component for controlling the internal humidity of the cover.

[0008] In one alternative embodiment: the temperature and humidity control component further includes a support rod mounted on a test bench, a connecting seat slidably mounted on the support rod, and a positioning element for positioning the connecting seat. The support rod has a square radial cross-section, and the connecting seat is fixedly connected to the cover.

[0009] In one alternative: the positioning element is a hand-tightening bolt, and the support rod is also provided with a limiting boss to prevent the connecting seat from slipping.

[0010] In one alternative, the testing equipment further includes a pressing component for bringing the cashmere fabric sample into contact with a standard plate.

[0011] In one alternative: the pressing assembly includes a pressure plate disposed in the cover for pressing the cashmere fabric sample and a lifting component for causing the pressure plate to rise and fall.

[0012] In one alternative embodiment: the lifting component includes a winding wheel mounted on the cover and a drive component for driving the winding wheel to rotate. A lifting rope is wound on the winding wheel, and the movable end of the lifting rope is connected to a pressure plate. A tension sensor is provided between the movable end of the lifting rope and the pressure plate. The cover also includes several guide rods that movably pass through the pressure plate.

[0013] A method for testing the shrinkage rate of cashmere fabrics, using the cashmere fabric shrinkage testing equipment described in any of the above technical solutions, includes the following steps: S1: Lay the cashmere fabric sample before washing in the laying area, measure the pressure data of the current state through the measuring device and take the average value as F1; S2: Wash, dehydrate and dry the cashmere fabric sample according to the standard procedure; S3: The washed cashmere fabric sample is laid out again in the laying area. The pressure data of the current state is measured by the measuring device and the average value is recorded as F2. The shrinkage rate of the cashmere fabric is defined by the difference between F1 and F2. The larger the difference, the more serious the shrinkage of the cashmere fabric.

[0014] Compared with the prior art, the beneficial effects of the embodiments of the present invention are as follows: Shrinkage of cashmere fabrics increases their mass per unit area. The more severe the shrinkage, the greater the mass per unit area. This means the measured values ​​of the cashmere fabric sample before and after washing will change. The larger the difference, the more severe the shrinkage. The specific testing procedure is as follows: First, lay the cashmere fabric sample in the laying area before washing. Measure the pressure data under the current state using the measuring device and record the average value as F1. Then, wash, dehydrate, and dry the cashmere fabric sample according to the standard procedure. After processing, lay the cashmere fabric sample back in the laying area and measure the pressure data under the current state again, recording the average value as F2. The shrinkage rate of the cashmere fabric is defined by the difference between F1 and F2. The larger the difference, the more severe the shrinkage. The testing operation is simple and convenient, effectively improving the efficiency of cashmere fabric shrinkage rate testing.

[0015] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0016] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. Furthermore, these drawings and textual descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concepts of this application to those skilled in the art through reference to specific embodiments.

[0017] Figure 1 This is a schematic diagram of the structure of an embodiment of the present invention.

[0018] Figure 2 This is a top view of the test bench in an embodiment of the present invention.

[0019] Figure 3 This is a three-dimensional schematic diagram of the test bench in an embodiment of the present invention.

[0020] Figure 4 This is a partial structural schematic diagram of the temperature and humidity control component in an embodiment of the present invention.

[0021] Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0022] Figure label annotations: 1-Test platform, 2-Temperature and humidity control component, 201-Cover, 202-Temperature control component, 203-Humidity control component, 204-Support rod, 205-Connecting seat, 206-Positioning component, 207-Limiting boss, 3-Laying area, 4-Mounting groove, 5-Standard plate, 6-Measuring component, 7-Pressure component, 701-Pressure plate, 702-Guide rod, 703-Rewinding wheel, 704-Drive component, 705-Lifting rope, 706-Tension sensor. Detailed Implementation

[0023] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0024] Please see Figures 1-3 A cashmere fabric shrinkage testing device includes a test platform 1, on which a laying area 3 for laying cashmere fabric samples is provided. The laying area 3 is provided with multiple mounting grooves 4, and a fitting standard plate 5 is provided in each mounting groove 4. The upper side of the standard plate 5 is flush with the upper side of the laying area 3. The mounting groove 4 is also provided with a measuring element 6 for measuring the pressure borne by the standard plate 5. Preferably, the measuring element 6 is a high-precision pressure sensor. Before washing, the cashmere fabric sample is laid in the laying area 3, and the average value of the data measured by multiple measuring elements 6 is recorded as F1. After washing, the cashmere fabric sample is laid in the laying area 3 again, and the average value of the data measured by multiple measuring elements 6 is recorded as F2. The shrinkage rate of the cashmere fabric is defined by the difference between F1 and F2.

[0025] Shrinkage of cashmere fabrics increases their mass per unit area (due to reduced warp and weft yarn spacing, increased density, and increased fabric thickness). The more severe the shrinkage, the greater the mass per unit area. This means the measured values ​​of measuring piece 6 before and after washing the cashmere fabric sample will change; the greater the difference, the more severe the shrinkage. The specific testing procedure is as follows: First, lay the cashmere fabric sample before washing in the laying area 3 (the cashmere fabric is of standard size, covering all standard plates 5 before and after washing, with the edges of the cashmere fabric sample a certain distance from the standard plates 5 to avoid...). (The deformation instability of the edge affects the accuracy of the test results). The pressure data of the current state is measured by measuring piece 6 and the average value is recorded as F1. Then, the cashmere fabric sample is washed, dehydrated and dried according to the standard procedure. After the treatment, the cashmere fabric sample is laid out again in the laying area 3. The pressure data of the current state is measured by measuring piece 6 and the average value is recorded as F2. The shrinkage rate of the cashmere fabric is defined by the difference between F1 and F2. The larger the difference, the more serious the shrinkage of the cashmere fabric. The test operation is simple and convenient, and effectively improves the efficiency of cashmere fabric shrinkage rate test.

[0026] Please see Figure 1 , Figure 3 and Figure 4In one embodiment of the present invention, the testing equipment further includes a temperature and humidity control component 2 for placing the laying area 3 under set temperature and humidity environmental conditions. The temperature and humidity control component 2 includes a cover 201 that is lifted and disposed above the test platform 1 for sealing the laying area 3. The cover 201 is provided with a temperature control component 202 for controlling the internal temperature of the cover 201 and a humidity control component 203 for controlling the internal humidity of the cover 201. The temperature and humidity control component 2 also includes a support rod 204 on the test bench 1, a connecting seat 205 slidably passing through the support rod 204, and a positioning element 206 for positioning the connecting seat 205. The radial cross section of the support rod 204 is square to prevent the connecting seat 205 from deflecting. The connecting seat 205 is fixedly connected to the cover 201.

[0027] It should be noted that the temperature control component 202 includes a temperature sensing module (such as a multi-point distributed temperature sensor array), a heating module, a cooling module, and a corresponding control module; the humidity control component 203 includes a humidity sensing module (such as a multi-point distributed humidity sensor array), a humidification module, a dehumidification module, and a corresponding control module; all of the above are existing technologies and will not be described in detail here.

[0028] In this embodiment, the shrinkage of cashmere fabric varies under different temperature and humidity conditions. By setting a temperature and humidity control component 2, the shrinkage rate of cashmere fabric under standard temperature and humidity conditions is tested to ensure the accuracy of the test results. After the cashmere fabric sample before washing is laid in the laying area 3, the cover 201 is moved down by the sliding connecting seat 205 until the laying area 3 is covered. Then, the temperature control component 202 and the humidity control component 203 keep the laying area 3 under standard temperature and humidity conditions for a certain period of time. Then, the data is measured by the measuring component 6, which is the initial state value of the fabric under standard temperature and humidity conditions. After the cashmere fabric sample is washed and dried, it is laid out again, and the above temperature and humidity control actions are repeated to keep the washed cashmere fabric sample under standard temperature and humidity conditions for a certain period of time. Then, the data is measured by the measuring component 6, which is the state value of the fabric after washing under standard temperature and humidity conditions, ensuring the accuracy of the test results. Of course, this embodiment can also be used to test the shrinkage rate of cashmere fabric under different temperature and humidity conditions to meet the diversity of testing.

[0029] Furthermore, in this embodiment, the positioning member 206 is a hand-tightening bolt, and the support rod 204 is also provided with a limiting boss 207 for preventing the connecting seat 205 from slipping. The connecting seat 205 can be positioned and slidable by tightening / loosening the positioning member 206.

[0030] Based on the previous embodiment, please refer to Figure 4 and Figure 5In one embodiment of the present invention, the testing device further includes a pressing component 7 for causing the cashmere fabric sample to come into contact with the standard plate 5. The pressing assembly 7 includes a pressing plate 701 disposed in the cover 201 for pressing the cashmere fabric sample and a lifting component for causing the pressing plate 701 to rise and fall. The lifting component includes a winding wheel 703 mounted on the cover 201 and a drive component 704 for driving the winding wheel 703 to rotate (the drive component 704 is a servo motor, geared motor, etc. in the prior art). A lifting rope 705 is wound on the winding wheel 703. The movable end of the lifting rope 705 is connected to the pressure plate 701, and a tension sensor 706 is provided between the movable end of the lifting rope 705 and the pressure plate 701. The cover 201 is also provided with several guide rods 702, which movably pass through the pressure plate 701.

[0031] In this embodiment, in practical applications, the cashmere fabric sample may have certain wrinkles and undulations, which may cause gaps between it and the standard plate 5, affecting the accuracy of the data measured by the measuring component 6. Therefore, before the measuring component 6 measures, the drive component 704 drives the winding wheel 703 to rotate, thereby releasing the suspension rope 705. The pressure plate 701 moves down under its own weight until it presses on the cashmere fabric sample. The pressing action of the pressure plate 701 makes the cashmere fabric sample flat and in close contact with the standard plate 5, ensuring the accuracy of the data measured by the measuring component 6. When the tension sensor 706 detects that the tension value is zero, it means that the entire weight of the pressure plate 701 is pressed on the cashmere fabric sample. The gravity of the pressure plate 701 is constant and does not affect the difference between the average values ​​of the measured data before and after washing for the definition of the shrinkage rate of the measured cashmere fabric.

[0032] The present invention also provides a method for testing the shrinkage rate of cashmere fabrics, using the cashmere fabric shrinkage rate testing equipment described in any of the above technical solutions, comprising the following steps: S1: Lay the cashmere fabric sample before washing in the laying area 3, measure the pressure data of the current state through the measuring device 6 and take the average value as F1; S2: Wash, dehydrate and dry the cashmere fabric sample according to the standard procedure; S3: The washed cashmere fabric sample is laid out again in the laying area 3. The pressure data of the current state is measured by the measuring device 6 and the average value is recorded as F2. The shrinkage rate of the cashmere fabric is defined by the difference between F1 and F2. The larger the difference, the more serious the shrinkage phenomenon of the cashmere fabric.

[0033] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A device for testing the shrinkage rate of cashmere fabrics, comprising a test bench (1), characterized in that, The test bench (1) is provided with a laying area (3) for laying cashmere fabric samples. The laying area (3) is provided with multiple mounting grooves (4). The mounting grooves (4) are provided with matching standard plates (5). The upper side of the standard plate (5) is flush with the upper side of the laying area (3). The mounting grooves (4) are also provided with measuring elements (6) for measuring the pressure borne by the standard plate (5). Before washing, the cashmere fabric sample is laid in the laying area (3). The average value of the data measured by multiple measuring elements (6) is recorded as F1. After washing, the cashmere fabric sample is laid in the laying area (3) again. The average value of the data measured by multiple measuring elements (6) is recorded as F2. The shrinkage rate of the cashmere fabric is defined by the difference between F1 and F2.

2. The cashmere fabric shrinkage testing equipment according to claim 1, characterized in that, The testing equipment also includes a temperature and humidity control component (2) for making the laying area (3) a set temperature and humidity environment. The temperature and humidity control component (2) includes a cover (201) that is lifted and installed above the test platform (1) for sealing the laying area (3). The cover (201) is provided with a temperature control component (202) for controlling the internal temperature of the cover (201) and a humidity control component (203) for controlling the internal humidity of the cover (201).

3. The cashmere fabric shrinkage testing equipment according to claim 2, characterized in that, The temperature and humidity control component (2) also includes a support rod (204) on the test bench (1), a connecting seat (205) slidably passing through the support rod (204), and a positioning component (206) for positioning the connecting seat (205). The support rod (204) has a square radial cross section, and the connecting seat (205) is fixedly connected to the cover (201).

4. The cashmere fabric shrinkage testing equipment according to claim 3, characterized in that, The positioning component (206) is a hand-tightening bolt, and the support rod (204) is also provided with a limiting boss (207) to prevent the connecting seat (205) from slipping.

5. The cashmere fabric shrinkage testing equipment according to claim 2, characterized in that, The testing equipment also includes a pressing component (7) for bringing the cashmere fabric sample into contact with the standard plate (5).

6. The cashmere fabric shrinkage testing equipment according to claim 5, characterized in that, The pressing assembly (7) includes a pressing plate (701) disposed in the cover (201) for pressing the cashmere fabric sample and a lifting component for causing the pressing plate (701) to rise and fall.

7. The cashmere fabric shrinkage testing device according to claim 6, characterized in that, The lifting component includes a winding wheel (703) mounted on the cover (201) and a drive unit (704) for driving the winding wheel (703) to rotate. A lifting rope (705) is wound on the winding wheel (703). The movable end of the lifting rope (705) is connected to the pressure plate (701), and a tension sensor (706) is provided between the movable end of the lifting rope (705) and the pressure plate (701). Several guide rods (702) are also provided in the cover (201), and the guide rods (702) move through the pressure plate (701).

8. A method for testing the shrinkage rate of cashmere fabrics, using the cashmere fabric shrinkage rate testing equipment described in any one of claims 1-7, characterized in that, Includes the following steps: S1: Place the cashmere fabric sample before washing in the laying area (3), measure the pressure data of the current state through the measuring piece (6) and take the average value as F1; S2: Wash, dehydrate and dry the cashmere fabric sample according to the standard procedure; S3: The washed cashmere fabric sample is laid out again in the laying area (3). The pressure data of the current state is measured by the measuring piece (6) and the average value is recorded as F2. The shrinkage rate of the cashmere fabric is defined by the difference between F1 and F2. The larger the difference, the more serious the shrinkage phenomenon of the cashmere fabric.

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