阅读说明：本技术 一种熔喷布的纤维分析装置 (Fiber analysis device of melt-blown fabric ) 是由 李锡放 于 2020-06-15 设计创作，主要内容包括：本发明公开了一种熔喷布的纤维分析装置包括：第一采样系统、第二采样系统、试样台和控制所述第一、二采样系统在两个正交的对焦平面上进行同步逐行扫描的线性位移系统,所述试样台设置在所述线性位移系统上；所述第一采样系统包括第一数码图像处理装置和第一光学显微镜头；所述第二采样系统包括第二数码图像处理装置和第二光学显微镜头。本发明的技术方案实现了对熔喷布纤维的整体分析,通过高分辨率显微采样系统在互相正交的二个对焦平面的同步逐行扫描的方式,解决了超细纤维的亚微米尺度及熔喷布整体厘米尺度的大跨度观察难题；同时可进一步分析熔喷布中的纤维分布及相互屈曲粘结而成的特殊的毛细结构。(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.)

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.

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.