CN111663315A - Fiber analysis device of melt-blown fabric - Google Patents
Fiber analysis device of melt-blown fabric Download PDFInfo
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- CN111663315A CN111663315A CN202010540466.6A CN202010540466A CN111663315A CN 111663315 A CN111663315 A CN 111663315A CN 202010540466 A CN202010540466 A CN 202010540466A CN 111663315 A CN111663315 A CN 111663315A
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- 239000004744 fabric Substances 0.000 title claims abstract description 35
- 239000000835 fiber Substances 0.000 title abstract description 54
- 238000005070 sampling Methods 0.000 claims abstract description 67
- 238000006073 displacement reaction Methods 0.000 claims abstract description 41
- 230000003287 optical effect Effects 0.000 claims abstract description 31
- 230000001360 synchronised effect Effects 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims description 4
- 230000000750 progressive effect Effects 0.000 claims description 4
- 230000009286 beneficial effect Effects 0.000 description 7
- 239000000463 material Substances 0.000 description 4
- 230000010365 information processing Effects 0.000 description 3
- 239000011358 absorbing material Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 244000025254 Cannabis sativa Species 0.000 description 1
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 description 1
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 229920001410 Microfiber Polymers 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 235000009120 camo Nutrition 0.000 description 1
- 235000005607 chanvre indien Nutrition 0.000 description 1
- 239000011162 core material Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011487 hemp Substances 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000003658 microfiber Substances 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
Images
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06H—MARKING, INSPECTING, SEAMING OR SEVERING TEXTILE MATERIALS
- D06H3/00—Inspecting textile materials
- D06H3/08—Inspecting textile materials by photo-electric or television means
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Textile Engineering (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Microscoopes, Condenser (AREA)
Abstract
The invention discloses a fiber analysis device of melt-blown fabric, which comprises: the system comprises a first sampling system, a second sampling system, a sample table and a linear displacement system for controlling the first sampling system and the second sampling system to synchronously scan line by line on two orthogonal focusing planes, wherein the sample table is arranged on the linear displacement system; the first sampling system comprises a first digital image processing device and a first optical micro lens; the second sampling system comprises a second digital image processing device and a second optical microscope lens. The technical scheme of the invention realizes the integral analysis of the melt-blown fabric fiber, and solves the problems of submicron scale of superfine fiber and large-span observation of integral centimeter scale of the melt-blown fabric in a mode of synchronous line-by-line scanning of a high-resolution micro-sampling system on two mutually orthogonal focusing planes; meanwhile, the fiber distribution in the melt-blown fabric and the special capillary structure formed by mutually buckling and bonding can be further analyzed.
Description
Technical Field
The invention belongs to the field of textile machinery, and particularly relates to a fiber analysis device of melt-blown fabric.
Background
The melt-blown fabric is the most core material of the mask, polypropylene is used as a main raw material of the melt-blown fabric, and the diameter of the fiber can reach 1-5 microns. The superfine fiber with the unique capillary structure increases the number and the surface area of the fiber in unit area, so that the melt-blown fabric has good filtering property, shielding property, heat insulation property and oil absorption property. Can be used in the fields of air and liquid filtering materials, isolating materials, absorbing materials, mask materials, warm-keeping materials, oil absorbing materials, wiping cloth and the like.
Meltblown webs are nonwovens made by drawing a polymer melt stream from a die orifice with a high velocity stream of hot air to form microfibers which are collected on a screen or drum and bonded to itself. The performance of the meltblown fabric is completely dependent on the fibers of the meltblown fabric and the distribution of the fibers, so that the fibers in the meltblown fabric need to be analyzed, and the analysis content comprises the thickness of the fibers and the three-dimensional structure formed by mutually buckling and bonding the fibers.
Current fiber analysis instruments are directed to fiber tows, such as cotton fibers, wool fibers, hemp fibers, chemical fiber filaments, silk, and the like. The fibers of the meltblown fibers are bonded to one another to form a web which cannot be separated into individual fiber bundles, and thus the conventional fiber analysis apparatus is not suitable for analyzing fibers of meltblown fibers.
The fibers of the melt-blown cloth belong to superfine fibers, the diameters of a large number of fibers are micron-sized, and the diameters of a small number of fibers may be submicron-sized, so that a microscope for observation needs to have a large enough magnification; the length of the fibers of the melt-blown fabric is about decimeter magnitude, the fibers are mutually bent and bonded to form a special capillary structure, and the observation visual field reaches centimeter magnitude when the capillary structure is analyzed; thus, a larger field of view must be obtained by scanning. The special capillary structure formed by mutually buckling and bonding fibers of the melt-blown fabric is a three-dimensional structure, and three-dimensional information is difficult to obtain by plane observation in a single direction, so synchronous scanning observation in multiple directions is required to obtain the information of the three-dimensional structure of the fibers as much as possible.
Disclosure of Invention
To overcome the disadvantages of the prior art, the present invention provides a meltblown fiber analysis apparatus, which can perform an overall analysis of meltblown fibers.
In order to achieve the technical purpose and achieve the technical effect, the invention is realized by the following technical scheme:
a meltblown fabric analysis apparatus, comprising: the device comprises a first sampling system, a second sampling system, a sample table and a linear displacement system for controlling the first sampling system and the second sampling system to synchronously scan line by line on two orthogonal focusing planes, wherein the sample table is arranged on the linear displacement system, and an observed melt-blown sample is placed on the sample table and moves along with the sample table; the first sampling system and the second sampling system are microscopic image acquisition systems, and the first sampling system comprises a first digital image processing device and a first optical microscope lens arranged on the first digital image processing device; the second sampling system comprises a second digital image processing device and a second optical micro-lens arranged on the second digital image processing device.
Furthermore, the first, second, third, fourth and fifth linear sliding tables are respectively and mainly composed of a driving motor, a ball screw, a linear sliding rail, a sliding table and a dustproof shell which are sequentially connected.
Furthermore, the fiber analysis device also comprises a computer control system, the driving motor is connected to the computer control system, the synchronous progressive scanning movement of the linear displacement system is controlled by the computer control system, the first and second digital image processing devices are also connected to the computer control system for image information processing, a large-scene static image synthesized by multiple frames of images can be output, and a dynamic video image in the scanning process can also be output.
Preferably, the first and second digital image processing devices may be industrial digital image processing devices or electronic eyepieces, and include CCD/CMOS image sensors, DSP image information processors, computer interfaces; the computer interface is a wired interface or a wireless interface.
Preferably, the sample table comprises a body frame, a sample bearing surface of the body frame is a light-transmitting plate, and a light-reflecting plate is arranged in the body frame. The observation relation of the light source to the microscope is extremely large, and illumination emitted by the light source is reflected to the light-transmitting plate through the light-reflecting plate and irradiates the bottom of the melt-blown fabric sample. The multi-angle multi-light source irradiation is more beneficial to the fiber analysis of the melt-blown fabric sample. The light source is not limited to ordinary visible light, and light with shorter wavelength is beneficial to improving the observation resolution.
Compared with the prior art, the invention has the following beneficial effects:
the technical scheme of the invention realizes the integral analysis of the melt-blown fabric fiber, and solves the problems of submicron scale of superfine fiber and large-span observation of integral centimeter scale of the melt-blown fabric in a mode of synchronous line-by-line scanning of a high-resolution micro-sampling system on two mutually orthogonal focusing planes; meanwhile, the fiber distribution in the melt-blown fabric and the special capillary structure formed by mutually buckling and bonding can be further analyzed.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings. The detailed description of the present invention is given in detail by the following examples and the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIG. 1 is a schematic structural diagram of a fiber analysis apparatus according to a first embodiment of the present invention.
FIG. 2 is a schematic structural diagram of a second embodiment of a fiber analysis apparatus according to the present invention.
FIG. 3 is a schematic view of a sample stage of a fiber analysis apparatus of the present invention that can receive a bottom light source.
The reference numbers in the figures illustrate: 1. the device comprises a first digital image processing device, a first optical microscope lens, a first linear sliding table, a second optical microscope lens, a second digital image processing device, a second linear sliding table, a sample table, a third linear sliding table, a fourth linear sliding table, a sample table, a fifth linear sliding table, a sample bearing surface, a sample reflecting plate, a sample melt-spraying sample, a first digital image processing device, a second digital image processing device.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
The first embodiment is as follows:
referring to fig. 1, a meltblown fiber analysis apparatus includes: the device comprises a first sampling system, a second sampling system, a sample table 7 and a linear displacement system for controlling the first sampling system and the second sampling system to synchronously scan line by line on two orthogonal focusing planes, wherein the sample table 7 is arranged on the linear displacement system, and an observed melt-blown fabric sample 13 is placed on the sample table 7 and moves along with the sample table 7; the first sampling system comprises a first digital image processing device 1 and a first optical micro lens 2 arranged on the first digital image processing device 1; the second sampling system comprises a second digital image processing device 5 and a second optical micro lens 4 arranged on the second digital image processing device 5.
Preferably, the linear displacement system comprises two one-axis linear displacement systems carrying the sampling system and a three-axis linear displacement system carrying the sample table; the two one-axis linear displacement systems respectively comprise a first linear sliding table 3 and a second linear sliding table 6, and the three-axis linear displacement system comprises a third linear sliding table 8, a fourth linear sliding table 9 and a fifth linear sliding table 10; the first sampling system is fixed on the first linear sliding table 3, and a translation straight line of the first sampling system is vertical to an optical axis of the first optical microscope lens 2; the second sampling system is fixed on the second linear slide rail 6, and the translation straight line of the second sampling system is vertical to the optical axis of the second optical microscope lens 4; the third linear sliding table 8, the fourth linear sliding table 9 and the fifth linear sliding table 10 form a three-axis orthogonal translation system, the sample table 7 is installed on the sliding table of the fourth linear sliding table 9, and the sample table 7 has the capability of translating in a three-dimensional space.
Furthermore, the first, second, third, fourth and fifth linear sliding tables 3,6,8,9 and 10 are respectively and mainly composed of a driving motor, a ball screw, a linear sliding rail, a sliding table and a dustproof shell which are sequentially connected.
Further, the fiber analysis device of the present embodiment further includes a computer control system, the driving motor is connected to the computer control system, the synchronous progressive scanning motion of the linear displacement system is controlled by the computer control system, the first and second digital image processing devices 1 and 5 are also connected to the computer control system for image information processing, and can output a large-scene still image synthesized by multiple frames of images, and also can output a dynamic video image in the scanning process.
Preferably, the first and second digital image processing devices 1 and 5 are industrial digital image processing devices or electronic eyepieces, and comprise a CCD/CMOS image sensor, a DSP image information processor, and a computer interface; the computer interface is a wired interface or a wireless interface.
Preferably, referring to fig. 3, the sample stage 7 includes a body frame, a sample bearing surface 11 of the body frame is a light-transmitting plate 11, and a light-reflecting plate 12 is disposed in the body frame. The observation relation of the light source to the microscope is very large, and the light emitted by the light source is reflected to the light-transmitting plate 11 through the light-reflecting plate and then irradiates the bottom of the meltblown fabric sample 13. The multi-angle multi-light source irradiation is more beneficial to the fiber analysis of the melt-blown fabric sample. The light source is not limited to ordinary visible light, and light with shorter wavelength is beneficial to improving the observation resolution.
The working principle of the embodiment is as follows:
the fifth linear sliding table 10 is adjusted to adjust the object distance between the sample table 7 and the first sampling system, so that focusing can be realized; the fourth linear sliding table 9 is adjusted to adjust the object distance between the sample table 7 and the second sampling system, so that focusing can be realized; the third linear sliding table 8 is driven to drive the sample table 7 to linearly translate along the sliding table of the third linear sliding table 8, and at the moment, the focusing planes of the first sampling system and the second sampling system are not changed, so that one line of sampling in synchronous scanning of two orthogonal planes is realized; and the first linear sliding table 3 is adjusted to move the first sampling system to the next line distance, the second linear sliding table 6 is adjusted to move the second sampling system to the next line distance, and the third linear sliding table 8 is driven to realize the sampling of the second line, so that the synchronous line-by-line scanning of two orthogonal focusing planes can be realized.
Example two:
referring to fig. 2, a meltblown fiber analysis apparatus, comprising: the device comprises a first sampling system, a second sampling system, a sample table 7 and a linear displacement system for controlling the first sampling system and the second sampling system to synchronously scan line by line on two orthogonal focusing planes, wherein the sample table 7 is arranged on the linear displacement system, and an observed melt-blown fabric sample 13 is placed on the sample table 7 and moves along with the sample table 7; the first sampling system comprises a first digital image processing device 1 and a first optical micro lens 2 arranged on the first digital image processing device 1; the second sampling system comprises a second digital image processing device 5 and a second optical micro lens 4 arranged on the second digital image processing device 5.
Preferably, the linear displacement system comprises two-axis linear displacement systems carrying the sampling system and one-axis linear displacement system carrying the sample table; in the two-axis linear displacement systems carrying the sampling system, one of the two linear displacement systems comprises a second linear sliding table 6 and a third linear sliding table 8, the other one of the two linear sliding tables comprises a fourth linear sliding table 9 and a fifth linear sliding table 10, and the one-axis linear displacement system carrying the sample table comprises a first linear sliding table 3; the second linear sliding table 6 and the third linear sliding table 8 form a two-axis orthogonal translation system, the first sampling system is fixed on the third linear sliding table 8, and a translation straight line of the first sampling system is parallel to an optical axis of the first optical microscope lens 2; the fourth linear sliding table 9 and the fifth linear sliding table 10 form another two-axis orthogonal translation system, the second sampling system is fixed on the fourth linear sliding rail 9, and a translation straight line of the second sampling system is parallel to an optical axis of the second optical microscope lens 4; the sample stage 7 is provided on the first linear slide table 3.
Furthermore, the first, second, third, fourth and fifth linear sliding tables 3,6,8,9 and 10 are respectively and mainly composed of a driving motor, a ball screw, a linear sliding rail, a sliding table and a dustproof shell which are sequentially connected.
Further, the fiber analysis device of the present embodiment further includes a computer control system, the driving motor is connected to the computer control system, the synchronous progressive scanning motion of the linear displacement system is controlled by the computer control system, the first and second digital image processing devices 1 and 5 are also connected to the computer control system for image information processing, and can output a large-scene still image synthesized by multiple frames of images, and also can output a dynamic video image in the scanning process.
Preferably, the first and second digital image processing devices 1 and 5 are industrial digital image processing devices or electronic eyepieces, and comprise a CCD/CMOS image sensor, a DSP image information processor, and a computer interface; the computer interface is a wired interface or a wireless interface.
Preferably, referring to fig. 3, the sample stage 7 includes a body frame, a sample bearing surface 11 of the body frame is a light-transmitting plate 11, and a light-reflecting plate 12 is disposed in the body frame. The observation relationship of the light source to the microscope is very large, and the light emitted by the light source is reflected by the reflecting plate to the light-transmitting plate 11 and then irradiates the bottom of the meltblown sample 13. The multi-angle multi-light source irradiation is more beneficial to the fiber analysis of the melt-blown fabric sample. The light source is not limited to ordinary visible light, and light with shorter wavelength is beneficial to improving the observation resolution.
Assuming that the image sensors of the first and second digital image processing devices 2,4 are 8000 × 6000 pixels, in order to clearly see the sub-micron-scale meltblown fibers, 20 pixels are allocated per micron, and the field of view of the image is 400 × 300 microns, i.e., 0.4 × 0.3 mm, a large field of view of about 20 × 2.1 mm can be obtained by two-dimensionally shifting 50 × 7 frames of the image in a line-by-line scanning manner, so that the distribution and structure of the meltblown fibers can be analyzed.
This is why the fiber analysis requires synchronous displacement scanning using two-dimensional orthogonal planes.
The implementation cost of the first embodiment is lower than that of the second embodiment because the sample table 7 is light in weight, the optical microscope lens is relatively heavy, and the cost is higher as the driving load of the linear sliding table is heavier.
Theoretically, only two sampling systems are placed on respective triaxial orthogonal translation systems, and scanning observation of two-dimensional orthogonal surfaces of a fixed sample can be achieved. However, the system needs six shafts in total, is six heavy-load shafts, and has obviously higher cost than five shafts of the invention; the second mode is that the system needs the synchronous displacement motion of the two lenses when the two orthogonal planes are synchronously scanned and observed, which is obviously not the same as the synchronous observation mode of the invention that the two lenses are fixed and only the sample is moved.
The optical microscope lens is assumed to be a fixed focus lens. If a zoom optical microscope lens is used, such a five-axis linear displacement system is still required to realize synchronous line-by-line scanning of two orthogonal surfaces so as to obtain the overall analysis information of the superfine fiber with a large visual field.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A meltblown fabric analysis apparatus, comprising: the system comprises a first sampling system, a second sampling system, a sample table (7) and a linear displacement system for controlling the first sampling system and the second sampling system to synchronously scan line by line on two orthogonal focusing planes, wherein the sample table (7) is arranged on the linear displacement system;
the first sampling system and the second sampling system are microscopic image acquisition systems, and the first sampling system comprises a first digital image processing device (1) and a first optical microscope lens (2); the second sampling system comprises a second digital image processing device (5) and a second optical microscope lens (4).
2. The meltblown fabric analysis apparatus of claim 1, wherein: the linear displacement system comprises two one-axis linear displacement systems carrying the sampling systems and a three-axis linear displacement system carrying the sample platform;
the two one-axis linear displacement systems respectively comprise a first linear sliding table (3) and a second linear sliding table (6), and the three-axis linear displacement system comprises a third linear sliding table (8), a fourth linear sliding table (9) and a fifth linear sliding table (10);
the first sampling system is fixed on the first linear sliding table (3), and the translation straight line of the first sampling system is vertical to the optical axis of the first optical microscope lens (2);
the second sampling system is fixed on the second linear slide rail (6), and the translation straight line of the second sampling system is vertical to the optical axis of the second optical microscope lens (4);
the three-axis orthogonal translation system is composed of the third linear sliding table (8), the fourth linear sliding table (9) and the fifth linear sliding table (10), the sample table (7) is installed on the sliding table of the fourth linear sliding table (9), and the sample table (7) has the capability of translating in a three-dimensional space.
3. The meltblown fabric analysis apparatus of claim 1, wherein: the linear displacement system comprises two-axis linear displacement systems carrying sampling systems and one-axis linear displacement system carrying a sample table;
in the two-axis linear displacement systems carrying the sampling systems, one of the two linear displacement systems comprises a second linear sliding table (6) and a third linear sliding table (8), the other one of the two linear displacement systems comprises a fourth linear sliding table (9) and a fifth linear sliding table (10), and the one-axis linear displacement system carrying the sample table comprises a first linear sliding table (3);
the second linear sliding table (6) and the third linear sliding table (8) form a two-axis orthogonal translation system, the first sampling system is fixed on the third linear sliding table (8), and a translation straight line of the first sampling system is parallel to an optical axis of the first optical microscope lens (2);
the fourth linear sliding table (9) and the fifth linear sliding table (10) form another two-axis orthogonal translation system, the second sampling system is fixed on the fourth linear sliding rail (9), and a translation straight line of the second sampling system is parallel to an optical axis of the second optical microscope lens (4);
the sample table (7) is arranged on the first linear sliding table (3).
4. The meltblown fabric analysis apparatus according to claim 2 or 3, characterized in that: the first, second, third, fourth and fifth linear sliding tables (3, 6,8,9 and 10) are respectively mainly composed of a driving motor, a ball screw, a linear sliding rail, a sliding table and a dustproof shell which are sequentially connected.
5. The meltblown fabric analysis apparatus of claim 1, wherein: the linear displacement system is characterized by further comprising a computer control system, the driving motor is connected to the computer control system, synchronous progressive scanning movement of the linear displacement system is controlled by the computer control system, and the first digital image processing device and the second digital image processing device (1, 5) are also connected to the computer control system to process image information.
6. The meltblown fabric analysis apparatus of claim 1, wherein: the first and second digital image processing devices (1, 5) are industrial digital image processing devices or electronic eyepieces and comprise CCD/CMOS image sensors, DSP image information processors and computer interfaces; the computer interface is a wired interface or a wireless interface.
7. The meltblown fabric analysis apparatus of claim 1, wherein: the sample table (7) comprises a body frame, a sample bearing surface (11) of the body frame is a light-transmitting plate (11), and a light-reflecting plate (12) is further arranged in the body frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010540466.6A CN111663315A (en) | 2020-06-15 | 2020-06-15 | Fiber analysis device of melt-blown fabric |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010540466.6A CN111663315A (en) | 2020-06-15 | 2020-06-15 | Fiber analysis device of melt-blown fabric |
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| CN111663315A true CN111663315A (en) | 2020-09-15 |
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