CN111426593B - High-accuracy finished shoe moisture permeability and moisture absorption performance testing device and testing method - Google Patents
High-accuracy finished shoe moisture permeability and moisture absorption performance testing device and testing method Download PDFInfo
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- CN111426593B CN111426593B CN202010278558.1A CN202010278558A CN111426593B CN 111426593 B CN111426593 B CN 111426593B CN 202010278558 A CN202010278558 A CN 202010278558A CN 111426593 B CN111426593 B CN 111426593B
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- 238000012360 testing method Methods 0.000 title claims abstract description 83
- 238000010521 absorption reaction Methods 0.000 title claims abstract description 28
- 230000035699 permeability Effects 0.000 title claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 78
- 230000007306 turnover Effects 0.000 claims abstract description 20
- 238000007789 sealing Methods 0.000 claims description 36
- 238000010438 heat treatment Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 11
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 9
- 239000000741 silica gel Substances 0.000 claims description 9
- 229910002027 silica gel Inorganic materials 0.000 claims description 9
- 239000012982 microporous membrane Substances 0.000 claims description 8
- 210000003423 ankle Anatomy 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims 1
- 238000005259 measurement Methods 0.000 abstract description 13
- 239000000463 material Substances 0.000 description 6
- 230000003028 elevating effect Effects 0.000 description 5
- 210000002683 foot Anatomy 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 229920000295 expanded polytetrafluoroethylene Polymers 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000035900 sweating Effects 0.000 description 1
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- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
- G01N5/02—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by absorbing or adsorbing components of a material and determining change of weight of the adsorbent, e.g. determining moisture content
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/0806—Details, e.g. sample holders, mounting samples for testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/082—Investigating permeability by forcing a fluid through a sample
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Abstract
The invention discloses a high-accuracy finished shoe moisture permeability and moisture absorption performance testing device and a testing method, wherein the device comprises a test box, a first measuring scale, a second measuring scale, a placing tray, a mounting rack, a water vapor generating device, a steam inlet pipe, a steam return pipe, a differential pressure sensor, a shoe to be tested and a steam permeable shoe mold; the mounting frame comprises a bottom plate, electric lifting support legs, a vertical rod, a lifting device, a turnover device and a shoe mounting seat, wherein the four electric lifting support legs are arranged on the bottom plate, the vertical rod is fixedly connected to the upper surface of the bottom plate, the lifting device is arranged on the vertical rod, and the shoe mounting seat is connected with the lifting device through the turnover device; the bottom plate is erected above the first measuring scale through the four electric lifting supporting legs; compared with the prior art, the invention reduces the trouble that the shoe to be measured and the vapor-permeable shoe mold need to be taken out of the test box when the moisture absorption is measured, and can pour out the condensed water in the vapor-permeable shoe mold to reduce the error of the measurement data.
Description
Technical Field
The invention relates to the field of shoe testing, in particular to a high-accuracy finished shoe moisture permeability and moisture absorption performance testing device and a testing method.
Background
The water vapor absorption and water vapor permeability of the finished shoes are closely related to the comfort and the sanitation of the finished shoes, and are important factors influencing the comfort and the sanitation. The finished shoes are irregular complex bodies formed by various materials, and comprise vamp materials, shoe lining materials, sole materials, adhesives, inner toe caps, structural design, shoe manufacturing process and the like, and the performance of the finished shoes cannot be truly reflected by the moisture absorption and moisture permeability test of the sole shoe materials.
At present, two methods are used for testing, one of the two methods is a direct steam introduction method, the principle is that quantitative water vapor is introduced into a shoe cavity, the shoe cavity is placed under the environment condition of constant temperature and relative humidity, a plurality of weights of a test shoe (with a sealing device) at different placing time nodes are weighed, and the difference value between the weights and the initial weight is analyzed, so that the quality of the water vapor absorption performance and the water vapor permeability performance of the finished shoe can be obtained; the other is the sweating false foot method, the domestic development principle is that a foot mould with holes is made of metal or special materials, an experimental foot mould connecting pipeline is placed in a shoe cavity, steam is introduced through the pipeline, and the subsequent test and analysis are the same as those of the direct steam introduction method.
But because the shoes that need will have foraminiferous foot mould after steam lets in and steam conduit dismantles to take out the test box outside and measures, produce the influence to test data easily at the in-process of taking out shoes. Still exist and easily condense into the water droplet among the steam transportation process, the liquid droplet of condensation is absorbed by shoes in dropping to the sole easily in the pipeline, probably will weaken the reasonable authenticity of test data.
In view of the above, the applicant has made an intensive study on the above-mentioned defects in the prior art, and has made this invention.
Disclosure of Invention
The invention mainly aims to provide a high-accuracy finished shoe moisture permeability and moisture absorption performance testing device and a testing method, which have the characteristic of improving the accuracy of finished shoe moisture permeability and moisture absorption testing.
In order to achieve the above purpose, the solution of the invention is:
a high-accuracy finished shoe moisture permeability and moisture absorption performance testing device comprises a test box, a first measuring scale, a second measuring scale, a placing tray, a mounting frame, a water vapor generating device, a vapor inlet pipe, a vapor return pipe, a differential pressure sensor, a shoe to be tested and a vapor permeable shoe mold; the steam inlet pipe, the steam return pipe and the differential pressure sensor are connected with the inner cavity of the test box, and one ends of the steam inlet pipe and the steam return pipe, which are far away from the test box, are connected with the steam generation device; one end of the steam inlet pipe, the steam return pipe and the differential pressure sensor, which are positioned in the test box, is connected with a horizontally arranged sealing flange, the steam-permeable shoe mold is sleeved in a shoe cavity of a shoe to be tested, an opening is formed in the ankle of the steam-permeable shoe mold, and a sealing strip which is used for being in sealing connection with the sealing flange is arranged on the periphery of the opening; the first measuring scale is positioned at the bottom of the test box below the sealing flange; the mounting frame comprises a bottom plate, electric lifting support legs, a vertical rod, a lifting device, a turnover device and a shoe mounting seat, wherein the four electric lifting support legs are arranged on the bottom plate, the vertical rod is fixedly connected to the upper surface of the bottom plate, the lifting device is arranged on the vertical rod, and the shoe mounting seat is connected with the lifting device through the turnover device; the sole of the shoe to be tested is fixedly connected to the shoe mounting seat; the bottom plate is erected above the first measuring scale through the four electric lifting supporting legs; and a second measuring scale, a temperature sensor and a humidity sensor are arranged on the inner side wall of the test box, and a placing tray is arranged on the second measuring scale.
Further, the electric lifting support leg is an electric telescopic cylinder; the lifting device comprises a lifting seat, a rack, a gear and a lifting motor, wherein the rack is vertically arranged on the vertical rod, the gear and the output end of the lifting motor are arranged on the lifting seat, and the lifting seat is meshed with the rack through the gear and vertically moves along the lifting seat; the turnover device is arranged on the lifting seat and comprises a turnover motor, and an output shaft of the turnover motor is fixedly connected with the shoe mounting seat.
Further, the lifting motor and the overturning motor are both stepping motors.
Furthermore, a drain pipe is arranged at the bottom of the test box and is connected with a drain valve.
Further, the bottom plate completely covers the first measuring scale from top to bottom, and the upper surface of the bottom plate and the horizontal plane have a slope of 5-10 degrees.
Furthermore, a plurality of steam-permeable holes are formed in the instep and the sole of the steam-permeable shoe mold, hollow columns extending towards the inner cavity of the steam-permeable shoe mold are formed in the steam-permeable holes, the hollow columns are gradually reduced from the root to the top, and the height of the hollow columns at the sole is larger than that of the instep.
Further, a breathable and waterproof microporous membrane is arranged at the opening of the hollow column. The microporous membrane is an expanded polytetrafluoroethylene membrane.
Furthermore, a condensed water U-shaped elbow, an ultrasonic device and a heating device are arranged on a steam inlet pipe at one end of the outer side of the test box, which is close to the test box, the heating temperature is 35 +/-2 ℃, and the condensed water U-shaped elbow, the ultrasonic device and the heating device are sequentially arranged from a steam generating device to the test box; and a condensed water discharge pipe is arranged at the bottom of the condensed water U-shaped elbow.
Further, be provided with battery and controller on the mounting bracket, the battery provides the electric energy for controller, electric lift landing leg, elevating gear and turning device, the controller is connected with electric lift landing leg, elevating gear and turning device electricity.
A high-accuracy finished shoe moisture permeability and moisture absorption performance testing method comprises the following steps:
firstly, adjusting the shoes to be measured for 48 hours in an environment with the temperature of 35 +/-2 ℃ and the relative humidity of 90 +/-5%; the vapor-permeable shoe mold is arranged in the adjusted shoe to be measured, the shoe to be measured is arranged on the shoe mounting seat, and the first measuring scale measures the total weight m1 of the shoe to be measured, the vapor-permeable shoe mold and the mounting frame;
secondly, starting the water vapor generating device to generate water vapor with the temperature of 35 +/-2 ℃ and the relative humidity of 90 +/-5%; setting the temperature in the test chamber to 35 +/-2 ℃; the electric lifting support legs jack up the bottom plate to separate the bottom plate from the first measuring scale; the lifting device rises along the vertical rod, and the opening of the steam-permeable shoe mold is hermetically connected with a sealing flange connected with a steam inlet pipe, a steam return pipe and a differential pressure sensor; starting timing; the pressure difference between the water vapor in the vapor-permeable shoe mold and the ambient atmosphere is stabilized at 0.12 +/-0.02 kPa;
after 8 hours of water vapor is introduced, stopping introducing the water vapor, descending the lifting device along the vertical rod to separate the opening of the vapor-permeable shoe mold from the sealing flange, and driving the shoe mounting seat and the shoe to be tested to rotate 180 degrees around the horizontal shaft by the turnover device to pour out condensed water in the vapor-permeable shoe mold; retracting the electric lifting support legs, and enabling the bottom plate to fall on the first measuring scale to obtain the total weight m2 of the to-be-measured shoe, the vapor-permeable shoe mold and the mounting rack; calculating to obtain the moisture absorption W of the shoe to be tested, which is m2-m 1;
fourthly, the electric lifting support legs jack up the bottom plate to separate the bottom plate from the first measuring scale; the turnover device drives the shoe mounting seat and the shoe to be tested to rotate 180 degrees around the horizontal shaft, so that the air-permeable shoe mold is arranged upwards; the lifting device rises along the vertical rod, and the opening of the vapor-permeable shoe mold is hermetically connected with a sealing flange connected with a vapor inlet pipe, a vapor return pipe and a differential pressure sensor; continuously introducing water vapor, and restarting timing; the pressure difference between the water vapor in the vapor-permeable shoe mold and the ambient atmosphere is stabilized at 0.12 +/-0.02 kPa;
after introducing water vapor for 8 hours, stopping introducing the water vapor, placing 200g of the dried silica gel particles 160 and 200g on a placing tray of a second measuring scale, and sealing the test box; when the humidity in the test chamber is reduced to a relatively stable value, reading the mass meter of the silica gel as m 3; introducing water vapor into the vapor-permeable shoe mold for 4 hours and then stopping introducing the water vapor; when the humidity in the test chamber is relatively stable again, reading the mass meter of the silica gel to be m 4; and calculating to obtain the moisture permeability P ═ m4-m3)/4 of the shoe to be tested.
After adopting the structure, the device and the method for testing the moisture permeability and the moisture absorption performance of the high-accuracy finished shoe have the following beneficial effects:
firstly, through setting up elevating gear with turning device for the ventilative shoe mold can break away from with sealing flange, again with the turning device's upset effect will breathe out the comdenstion water in the ventilative shoe mold, so increased measurement accuracy.
Secondly, through setting up the electric lift landing leg for when ventilative shoe mold with sealing flange connects, the bottom plate with first measurement balance breaks away from, thereby first measurement balance is not atress, has avoided because long-time pressure is used in influence measurement accuracy on the first measurement balance.
Thirdly, through setting up hollow post has reduced during the comdenstion water passes through the steam-permeable hole seepage to the shoes that await measuring, hollow post dwindles from root to top gradually for the entry of hollow post is less than the export, reduces the probability that the comdenstion water that drips enters into hollow post. The condensed water is further isolated by the arrangement of the microporous membrane.
Fourthly, through setting up the battery with the controller for the mounting bracket need not to be connected with the external world through the electric wire, has reduced because the weight of electric wire causes the influence to the measurement.
Compared with the prior art, the invention reduces the trouble that the shoe to be measured and the vapor-permeable shoe mold need to be taken out of the test box when the moisture absorption is measured, and can pour out the condensed water in the vapor-permeable shoe mold to reduce the error of the measurement data.
Drawings
Fig. 1 is a schematic overall structure diagram of a high-accuracy finished shoe moisture permeability and moisture absorption performance testing device.
FIG. 2 is a schematic side view of the present invention.
Fig. 3 is a schematic sectional view of the vapor-permeable shoe mold.
Fig. 4 is a schematic structural view of the steam-permeable hole and the hollow column.
FIG. 5 shows a U-bend with condensate, ultrasonic device and heating device
In the figure:
a test chamber 1; a first measuring scale 11; a second measuring scale 12; a placement tray 121; a drain pipe 13; a drain valve 131; a temperature sensor 14; a humidity sensor 15;
a mounting frame 2; a bottom plate 21; an electric lifting leg 22; a vertical rod 23;
a lifting device 24; a lifting base 241; a rack 242; a gear 243;
a turning device 25; a turnover motor 251; a shoe mount 26;
a water vapor generation device 3; a steam inlet pipe 31; a condensate U-bend 311; a condensed water discharge pipe 312; an ultrasonic device 313; a heating device 314; a return pipe 32; a differential pressure sensor 33; a sealing flange 34;
the shoe 4 to be tested; a vapor-permeable shoe mold 5; an opening 51; a sealing strip 511; a vapor-permeable hole 52; a hollow column 53; a microporous membrane 54.
Detailed Description
In order to further explain the technical solution of the present invention, the present invention is explained in detail by the following specific examples.
As shown in fig. 1 to 5, the device for testing moisture permeability and moisture absorption performance of a high-accuracy finished shoe according to the present invention comprises a test box 1, a first measuring scale 11, a second measuring scale 12, a placing tray 121, a mounting rack 2, a water vapor generating device 3, a steam inlet pipe 31, a steam return pipe 32, a differential pressure sensor 33, a shoe 4 to be tested, and a vapor permeable shoe mold 5; the steam inlet pipe 31, the steam return pipe 32 and the differential pressure sensor 33 are connected with the inner cavity of the test box 1, and one ends of the steam inlet pipe 31 and the steam return pipe 32, which are far away from the test box 1, are connected with the steam generating device 3; one end of the steam inlet pipe 31, the steam return pipe 32 and the differential pressure sensor 33, which are positioned in the test box 1, is connected with a horizontally arranged sealing flange 34, the steam-permeable shoe mold 5 is sleeved in a shoe cavity of the shoe 4 to be tested, the steam-permeable shoe mold 5 is provided with an opening 51 at the ankle, and the periphery of the opening 51 is provided with a sealing strip 511 for being in sealing connection with the sealing flange 34; the sealing strip 511 is made of rubber; the first measuring scale 11 is positioned at the bottom of the test box 1 below the sealing flange 34; the mounting frame 2 comprises a bottom plate 21, electric lifting support legs 22, a vertical rod 23, a lifting device 24, a turnover device 25 and a shoe mounting seat 26, wherein the four electric lifting support legs 22 are arranged on the bottom plate 21, the vertical rod 23 is fixedly connected to the upper surface of the bottom plate 21, the lifting device 24 is arranged on the vertical rod 23, and the shoe mounting seat 26 is connected with the lifting device 24 through the turnover device 25; the sole of the shoe 4 to be tested is fixedly connected to the shoe mounting seat 26; the bottom plate 21 is erected above the first measuring scale 11 through four electric lifting legs 22; the inner side wall of the test box 1 is provided with a second measuring scale 12, a temperature sensor 14 and a humidity sensor 15, and the second measuring scale 12 is provided with a placing tray 121.
Therefore, the device and the method for testing the moisture permeability and the moisture absorption performance of the finished shoes with high accuracy enable the ventilated shoe mold 5 to be separated from the sealing flange 34 by arranging the lifting device 24 and the overturning device 25, and pour out the condensed water in the ventilated shoe mold 5 under the overturning effect of the overturning device 25, so that the measurement accuracy is improved. Through the arrangement of the electric lifting supporting legs 22, when the vapor-permeable shoe mold 5 is connected with the sealing flange 34, the bottom plate 21 is separated from the first measuring scale 11, so that the first measuring scale 11 is not stressed, and the influence on the measurement precision caused by long-time pressure acting on the first measuring scale 11 is avoided.
Preferably, the electric lifting leg 22 is an electric telescopic cylinder; the lifting device 24 comprises a lifting seat 241, a rack 242, a gear 243 and a lifting motor (not shown in the figure), the rack 242 is vertically arranged on the vertical rod 23, the gear 243 and the output end of the lifting motor are arranged on the lifting seat 241, the lifting seat 241 is vertically moved along the lifting seat 241 by the engagement of the gear 243 and the rack 242; the turning device 25 is arranged on the lifting seat 241, the turning device 25 comprises a turning motor 521, and an output shaft of the turning motor 521 is fixedly connected with the shoe installation seat 26. The lifting motor drives the gear 243 to rotate, so that the lifting seat 241 moves on the vertical rod 23. After the shoe 4 to be tested and the vapor-permeable shoe mold 5 descend to a certain height, the overturning motor 521 drives the shoe 4 to be tested and the vapor-permeable shoe mold 5 to overturn around a horizontal shaft, and condensed water in the inner cavity of the vapor-permeable shoe mold 5 flows to the heel position along the sole position and then flows out of the vapor-permeable shoe mold 5. Further, the lifting motor and the turning motor 521 are both stepping motors.
Preferably, the bottom of the test chamber 1 is provided with a drain pipe 13, and a drain valve 131 is connected to the drain pipe 13. So conveniently clear up inside test box 1, the comdenstion water can conveniently be discharged outside test box 1.
Preferably, the bottom plate 21 completely covers the first measuring scale 11 from top to bottom, and the upper surface of the bottom plate has a slope of 5 to 10 degrees with the horizontal plane. In this way, the influence of the drained condensate on the first measuring scale 11 is reduced.
Preferably, a plurality of air-permeable holes 52 are formed at the instep and the sole of the air-permeable shoe mold 5, hollow columns 53 extending towards the inner cavity of the air-permeable shoe mold 5 are formed on the air-permeable holes 52, the hollow columns 53 are gradually reduced from the root to the top, and the height of the hollow columns 53 at the sole is greater than that of the hollow columns 53 at the instep. Further, a microporous membrane 54 which is permeable to air and impermeable to water is provided at the opening 51 of the hollow column 53. Preferably, the microporous membrane 54 is an expanded polytetrafluoroethylene membrane. Through setting up hollow post 53, reduced during the comdenstion water passes through steam-permeable hole 52 seepage to the shoes 4 that await measuring, hollow post 53 dwindles from root to top gradually for the entry of hollow post 53 is less than the export, reduces the probability that the comdenstion water that drips enters into hollow post 53. The condensate is further isolated by the provision of the microporous membrane 54.
Preferably, a condensed water U-shaped elbow 311, an ultrasonic device 313 and a heating device 314 are arranged on the steam inlet pipe 31 at one end of the test box 1, which is close to the test box 1, on the outer side of the test box 1, the heating temperature is 35 +/-2 ℃, and the condensed water U-shaped elbow 311, the ultrasonic device 313 and the heating device 314 are sequentially arranged from the steam generating device 3 to the test box 1; the bottom of the condensed water U-shaped elbow 311 is provided with a condensed water discharge pipe 312. The steam generated by the steam generating device 3 is conveyed through the steam inlet pipe 31, the steam in the midway gradually cools the steam to form tiny droplets, the condensed water attached to the inner wall of the steam inlet pipe 31 can be intercepted through the U-shaped elbow 311 of the condensed water, the volume of the tiny droplets in the steam is further reduced through the crushing action of the ultrasonic device 313, and the heating device 314 is matched with the ultrasonic device 313 to supplement energy for the crushed tiny droplets. Thus, the quantity of liquid drops in the water vapor entering the vapor-permeable shoe mold 5 is reduced as much as possible, and the measurement accuracy is improved.
Preferably, be provided with battery (not shown in the figure) and controller on the mounting bracket 2, the battery provides the electric energy for controller, electric lift landing leg 22, elevating gear 24 and turning device 25, the controller is singlechip or PLC, the controller is connected with electric lift landing leg 22, elevating gear 24 and turning device 25 electricity. Through setting up the battery with the controller for mounting bracket 2 need not to be connected with the external world through the electric wire, has reduced because the weight of electric wire causes the influence to measuring. The controller can control the electric lifting supporting legs 22, the lifting device 24 and the turnover device 25 to execute the actions with set programs, and the measurement operation is automatically completed.
A high-accuracy finished shoe moisture permeability and moisture absorption performance testing method comprises the following steps: firstly, adjusting the shoe 4 to be measured for 48 hours in an environment with the temperature of 35 +/-2 ℃ and the relative humidity of 90 +/-5%; the vapor-permeable shoe mold 5 is placed into the adjusted shoe 4 to be measured and the shoe 4 to be measured is mounted on the shoe mounting base 26, and the first measuring scale 11 measures the total weight m1 of the shoe 4 to be measured, the vapor-permeable shoe mold 5 and the mounting frame 2.
Secondly, starting the water vapor generating device 3 to generate water vapor with the temperature of 35 +/-2 ℃ and the relative humidity of 90 +/-5 percent; setting the temperature in the test chamber 1 to 35 +/-2 ℃; the electric lifting support legs 22 jack up the bottom plate 21 to separate the bottom plate 21 from the first measuring scale 11; the lifting device 24 rises along the vertical rod 23, and the opening 51 of the steam-permeable shoe mold 5 is hermetically connected with a sealing flange 34 connected with a steam inlet pipe 31, a steam return pipe 32 and a differential pressure sensor 33; starting timing; the pressure difference between the water vapor in the vapor-permeable shoe mold 5 and the ambient atmosphere is stabilized at 0.12 +/-0.02 kPa.
Thirdly, after the water vapor is introduced for 8 hours, the water vapor is stopped to be introduced, the lifting device 24 descends along the vertical rod 23 to separate the opening 51 of the vapor-permeable shoe mold 5 from the sealing flange 34, and the overturning device 25 drives the shoe mounting seat 26 and the shoe 4 to be tested to rotate 180 degrees around the horizontal axis to pour out the condensed water in the vapor-permeable shoe mold 5; retracting the electric lifting supporting legs 22, and enabling the bottom plate 21 to fall on the first measuring scale 11 to obtain the total weight m2 of the shoe 4 to be measured, the vapor-permeable shoe mold 5 and the mounting rack 2; and calculating to obtain the moisture absorption W of the shoe 4 to be tested, which is m2-m 1.
The electric lifting supporting legs 22 jack up the bottom plate 21 to separate the bottom plate 21 from the first measuring scale 11; the turning device 25 drives the shoe mounting seat 26 and the shoe 4 to be tested to rotate 180 degrees around the horizontal axis, so that the vapor-permeable shoe mold 5 is arranged upwards; the lifting device 24 rises along the vertical rod 23, and the opening 51 of the steam-permeable shoe mold 5 is hermetically connected with a sealing flange 34 connected with a steam inlet pipe 31, a steam return pipe 32 and a differential pressure sensor 33; continuously introducing water vapor, and restarting timing; the pressure difference between the water vapor in the vapor-permeable shoe mold 5 and the ambient atmosphere is stabilized at 0.12 +/-0.02 kPa.
After introducing water vapor for 8 hours, stopping introducing the water vapor, placing 200g of the dried silica gel particles 160 and 200g on the placing tray 121 of the second measuring scale 12, and sealing the test box 1; when the humidity in the test chamber 1 is reduced to a relatively stable value, reading the mass of the silica gel to be m 3; introducing water vapor into the vapor-permeable shoe mold 5 for 4 hours and then stopping introducing the water vapor; when the humidity in the test chamber 1 is relatively stable again, reading the mass meter of the silica gel to be m 4; and calculating to obtain the moisture permeability P ═ m4-m3)/4 of the shoe 4 to be tested.
Compared with the prior art, the invention reduces the trouble that the shoe 4 to be measured and the vapor-permeable shoe mold 5 need to be taken out of the test box 1 when measuring the moisture absorption, and can pour out the condensed water in the vapor-permeable shoe mold 5 to reduce the error of the measurement data.
The above embodiments and drawings are not intended to limit the form and style of the present invention, and any suitable changes or modifications thereof by those skilled in the art should be considered as not departing from the scope of the present invention.
Claims (6)
1. A high-accuracy finished shoe moisture permeability and moisture absorption performance testing device is characterized by comprising a test box, a first measuring scale, a second measuring scale, a placing tray, a mounting frame, a water vapor generating device, a steam inlet pipe, a steam return pipe, a differential pressure sensor, a shoe to be tested and a vapor permeable shoe mold; the steam inlet pipe, the steam return pipe and the differential pressure sensor are connected with the inner cavity of the test box, and one ends of the steam inlet pipe and the steam return pipe, which are far away from the test box, are connected with the steam generation device; one end of the steam inlet pipe, the steam return pipe and the differential pressure sensor, which are positioned in the test box, is connected with a horizontally arranged sealing flange, the steam-permeable shoe mold is sleeved in a shoe cavity of a shoe to be tested, an opening is formed in the ankle part of the steam-permeable shoe mold, and a sealing strip which is used for being connected with the sealing flange in a sealing manner is arranged on the periphery of the opening; the first measuring scale is positioned at the bottom of the test box below the sealing flange; the mounting frame comprises a bottom plate, electric lifting support legs, a vertical rod, a lifting device, a turnover device and a shoe mounting seat, wherein the four electric lifting support legs are arranged on the bottom plate, the vertical rod is fixedly connected to the upper surface of the bottom plate, the lifting device is arranged on the vertical rod, and the shoe mounting seat is connected with the lifting device through the turnover device; the sole of the shoe to be tested is fixedly connected to the shoe mounting seat; after the water vapor is stopped being introduced, the lifting device descends along the vertical rod to separate the opening of the vapor-permeable shoe mold from the sealing flange, and the overturning device drives the shoe mounting seat and the shoe to be tested to rotate 180 degrees around the horizontal shaft to pour out condensed water in the vapor-permeable shoe mold; the bottom plate is erected above the first measuring scale through the four electric lifting supporting legs; a second measuring scale, a temperature sensor and a humidity sensor are arranged on the inner side wall of the test box, and a placing tray is arranged on the second measuring scale;
the bottom of the test box is provided with a drain pipe, and the drain pipe is connected with a drain valve; the bottom plate completely covers the first measuring scale from top to bottom, and the upper surface of the bottom plate and the horizontal plane have a slope of 5-10 degrees;
a plurality of steam-permeable holes are formed at the instep and the sole of the steam-permeable shoe mold, hollow columns extending towards the inner cavity of the steam-permeable shoe mold are formed on the steam-permeable holes, the hollow columns are gradually reduced from the root to the top, and the height of the hollow columns at the sole is greater than that of the instep; and the opening of the hollow column is provided with a breathable and waterproof microporous membrane.
2. The device for testing the moisture permeability and moisture absorption performance of the finished shoes with high accuracy as claimed in claim 1, wherein the electric lifting leg is an electric telescopic cylinder; the lifting device comprises a lifting seat, a rack, a gear and a lifting motor, wherein the rack is vertically arranged on the vertical rod, the gear and the output end of the lifting motor are arranged on the lifting seat, and the lifting seat is meshed with the rack through the gear and vertically moves along the lifting seat; the turnover device is arranged on the lifting seat and comprises a turnover motor, and an output shaft of the turnover motor is fixedly connected with the shoe mounting seat.
3. The device for testing moisture permeability and moisture absorption performance of finished shoes as claimed in claim 2, wherein the lifting motor and the turning motor are stepping motors.
4. The device for testing the moisture permeability and moisture absorption performance of the finished shoes with high accuracy as claimed in claim 1, wherein a condensed water U-shaped elbow, an ultrasonic device and a heating device are arranged on a steam inlet pipe at one end of the test box, which is arranged outside the test box, the heating temperature is 35 +/-2 ℃, and the condensed water U-shaped elbow, the ultrasonic device and the heating device are arranged in sequence from a steam generating device to the direction of the test box; and a condensed water discharge pipe is arranged at the bottom of the condensed water U-shaped elbow.
5. The device for testing the moisture permeability and moisture absorption performance of the finished shoes with high accuracy as claimed in claim 1, wherein a storage battery and a controller are arranged on the mounting frame, the storage battery supplies electric energy to the controller, the electric lifting leg, the lifting device and the overturning device, and the controller is electrically connected with the electric lifting leg, the lifting device and the overturning device.
6. A method for testing moisture permeability and moisture absorption performance of a shoe with high accuracy, which is characterized in that the device for testing moisture permeability and moisture absorption performance of a shoe as claimed in any one of claims 1 to 5 is used, and further comprises the following steps:
firstly, adjusting the shoes to be measured for 48 hours in an environment with the temperature of 35 +/-2 ℃ and the relative humidity of 90 +/-5%; the method comprises the following steps of (1) placing a vapor-permeable shoe mold into a regulated shoe to be measured, installing the shoe to be measured on a shoe installation seat, and measuring the total weight m1 of the shoe to be measured, the vapor-permeable shoe mold and an installation frame by a first measuring scale;
secondly, starting the water vapor generating device to generate water vapor with the temperature of 35 +/-2 ℃ and the relative humidity of 90 +/-5%; setting the temperature in the test chamber to 35 +/-2 ℃; the electric lifting support legs jack up the bottom plate to separate the bottom plate from the first measuring scale; the lifting device rises along the vertical rod, and the opening of the steam-permeable shoe mold is hermetically connected with a sealing flange connected with a steam inlet pipe, a steam return pipe and a differential pressure sensor; starting timing; the pressure difference between the water vapor in the vapor-permeable shoe mold and the ambient atmosphere is stabilized at 0.12 +/-0.02 kPa;
after 8 hours of water vapor is introduced, stopping introducing the water vapor, descending the lifting device along the vertical rod to separate the opening of the vapor-permeable shoe mold from the sealing flange, and driving the shoe mounting seat and the shoe to be tested to rotate 180 degrees around the horizontal shaft by the turnover device to pour out condensed water in the vapor-permeable shoe mold; retracting the electric lifting support legs, and enabling the bottom plate to fall on the first measuring scale to obtain the total weight m2 of the to-be-measured shoe, the vapor-permeable shoe mold and the mounting rack; calculating to obtain the hygroscopicity W = m2-m1 of the shoe to be tested;
fourthly, the electric lifting supporting legs jack up the bottom plate, and the bottom plate is separated from the first measuring scale; the turnover device drives the shoe mounting seat and the shoe to be tested to rotate 180 degrees around the horizontal shaft, so that the air-permeable shoe mold is arranged upwards; the lifting device rises along the vertical rod, and the opening of the steam-permeable shoe mold is hermetically connected with a sealing flange connected with a steam inlet pipe, a steam return pipe and a differential pressure sensor; continuously introducing water vapor, and restarting timing; the pressure difference between the water vapor in the vapor-permeable shoe mold and the ambient atmosphere is stabilized at 0.12 +/-0.02 kPa;
after introducing water vapor for 8 hours, stopping introducing the water vapor, placing 200g of the dried silica gel particles 160 and 200g on a placing tray of a second measuring scale, and sealing the test box; when the humidity in the test chamber is reduced to a relatively stable value, reading the mass meter of the silica gel as m 3; introducing water vapor into the vapor-permeable shoe mold for 4 hours and then stopping introducing the water vapor; when the humidity in the test chamber is relatively stable again, reading the mass meter of the silica gel to be m 4; and calculating to obtain the moisture permeability P = (m4-m3)/4 of the shoe to be tested.
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| IT1307159B1 (en) * | 1999-01-14 | 2001-10-29 | Nottington Holding Bv | EQUIPMENT FOR MEASURING THE BREATHABILITY CAPACITY OF A FOOTWEAR. |
| CN200975968Y (en) * | 2006-11-24 | 2007-11-14 | 李镇峰 | Domestic animals meat water content measurer for arbitration act |
| CN201673086U (en) * | 2010-04-19 | 2010-12-15 | 常州市方嘉电子仪器有限公司 | Automatic measuring instrument for caking index of bituminous coal |
| CN201898953U (en) * | 2010-11-26 | 2011-07-20 | 陕西科技大学 | Tester for water vapor permeability of finished shoes |
| CN202233370U (en) * | 2011-09-29 | 2012-05-30 | 温州职业技术学院 | Moisture absorption and moisture permeability tester for closed shoes |
| CN202335437U (en) * | 2011-10-23 | 2012-07-18 | 温州市质量技术监督检测院 | Moisture absorption and moisture permeability testing instrument for finished shoes |
| CN104330325A (en) * | 2014-10-17 | 2015-02-04 | 郑州轻工业学院 | System for analyzing technical indexes of fuel |
| CN104457251A (en) * | 2014-11-27 | 2015-03-25 | 济南大学 | Lifting device for thermogravimetric analysis furnace |
| CN107660844A (en) * | 2017-10-17 | 2018-02-06 | 晋江诺研机械设计有限公司 | A kind of quick pressing equipment for shoes production |
| CN212083148U (en) * | 2020-04-10 | 2020-12-04 | 黎明职业大学 | Finished shoe moisture permeability and moisture absorption performance testing instrument with good precision |
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