1. The utility model provides a micro visual experimental apparatus of ultra high molecular weight polyethylene powder sintering moulding, includes visual sintering mould, style microscope and display, its characterized in that, visual sintering mould has the die cavity, and the upper end of die cavity is provided with the visual window, and style microscope's objective setting is in visual window top, and style microscope passes through the cable and links to each other with the display, and style microscope sees through the visual window and shows the condition in the die cavity on the display in real time.

2. The microscopic visual experimental apparatus for sintering molding of ultra-high molecular weight polyethylene powder as claimed in claim 1, wherein an annular variable light source is disposed around the outside of the objective lens.

3. The microscopic visual experimental device for sintering molding of ultra-high molecular weight polyethylene powder as claimed in claim 1, wherein the visual sintering mold is placed on the mounting platform, and a heat insulation backing plate is arranged between the visual sintering mold and the mounting platform.

4. The microscopic visual experimental device for sintering molding of ultra-high molecular weight polyethylene powder as claimed in claim 1, wherein a blower for cooling is arranged outside the visual sintering mold, and the position of the blower is higher than the top surface of the visual sintering mold.

5. The microscopic visual experimental device for sintering molding of ultra-high molecular weight polyethylene powder as claimed in any one of claims 1 to 4, wherein the visual sintering mold comprises a cylinder, a base and an end cap, the base and the end cap are detachably connected to two ends of the cylinder to form a cavity, i.e. a mold cavity, wherein the center of the end cap is provided with an observation hole, and the observation hole is sealed by a window glass to form a visual window.

6. The microscopic visual experimental device for sintering molding of ultra-high molecular weight polyethylene powder as claimed in claim 5, wherein the heating ring is installed on the outer wall of the cylinder, and the temperature control thermocouple is installed at the radial position in the middle of the cylinder.

7. The microscopic visual experimental device for sintering molding of ultra-high molecular weight polyethylene powder as claimed in claim 5, wherein the window glass is made of transparent high temperature resistant quartz glass.

8. The microscopic visual experimental device for sintering molding of ultra-high molecular weight polyethylene powder as claimed in any one of claims 1 to 4, wherein the microscope comprises a column, a focusing mechanism and a microscope body, the microscope body is provided with an ocular, an electron ocular and an objective, and the electron ocular is connected with a display through a video cable.

9. The apparatus for microscopic visualization experiment of sintering molding of ultra-high molecular weight polyethylene powder as claimed in claim 8, wherein the focusing mechanism comprises a lifting arm slidably sleeved on the column, and a lens body is fixed on the lifting arm.

10. The microscopic visual experimental device for sintering molding of ultra-high molecular weight polyethylene powder as claimed in claim 9, wherein the lifting arm comprises a connecting block sleeved on the column and a scope hoop fixed on the connecting block, the scope is fixed in the scope hoop, and the connecting block is provided with a height fixing knob and a focusing wheel.

Background

The powder sintering method is the main method for forming the ultra-high molecular weight polyethylene microporous filter element material at present. In the process of preparing the ultra-high molecular weight polyethylene microporous filter element material by a powder sintering method, resin powder particles are heated in a film cavity of a die, the surfaces of the particles are fused and then bonded together, and microscopic channels are formed by gaps among the particles. The method can produce the microporous material of the filter element with the pore diameter of 0.1-10 mu m, and the pore diameter and the porosity of the microporous material are mainly influenced by the particle diameter, the particle size distribution and the like. In order to observe the state change of powder particles in the sintering process from heating to cooling with high definition and to ascertain the micropore forming mechanism of the ultra-high molecular weight polyethylene microporous filter element material prepared by the powder sintering method, a special powder sintering molding experimental device is required to observe and record the morphological change of the sintering process of fine powder which is difficult to distinguish by naked eyes in a microscale, but the existing experimental device cannot achieve the aim.

Disclosure of Invention

In order to solve the problems in the prior art, the invention provides a microscopic visualization experimental device for sintering and molding ultrahigh molecular weight polyethylene powder, and the device can be used for performing visualized microscopic magnification observation and recording on the morphological change of powder particles in the process of preparing the ultrahigh molecular weight polyethylene microporous filter element material by a powder sintering method.

In order to solve the technical problems, the technical scheme of the invention is as follows:

the utility model provides a micro visual experimental apparatus of ultra high molecular weight polyethylene powder sintering moulding, includes visual sintering mould, style microscope and display, visual sintering mould has the die cavity, and the upper end of die cavity is provided with the visual window, and style microscope's objective setting is in visual window top, and style microscope passes through the cable and links to each other with the display, and style microscope sees through the visual window and shows the condition in the die cavity on the display in real time.

An annular variable light source is arranged around the outside of the objective lens.

The visual sintering mold is placed on the mounting platform, and a heat insulation base plate is arranged between the visual sintering mold and the mounting platform.

And a blower for cooling is arranged on the outer side of the visual sintering mold, and the position of the air opening of the blower is higher than the top surface of the visual sintering mold.

The visual sintering mould comprises a barrel, a base and end covers, wherein the base and the end covers are detachably connected to two ends of the barrel to form a cavity, namely a mould cavity, an observation hole is formed in the center of each end cover, and a visual window is formed after the observation hole is sealed by window glass.

The heating ring is installed on the outer wall of the barrel, and the temperature control thermocouple is installed at the radial position of the middle of the barrel.

The window glass is made of transparent high-temperature-resistant quartz glass.

The body type microscope comprises a stand column, a focusing mechanism and a microscope body, wherein an ocular, an electronic ocular and an objective lens are arranged on the microscope body, and the electronic ocular is connected with a display through a video cable.

The focusing mechanism comprises a lifting arm which is sleeved on the stand column in a sliding manner, and a lens body is fixed on the lifting arm.

The lifting arm comprises a connecting block sleeved on the stand column and a lens body hoop fixed on the connecting block, the lens body is fixed in the lens body hoop, and a height fixing knob and a focusing wheel are arranged on the connecting block.

The invention has the technical effects that:

because the top of the visual sintering mold is provided with the window glass made of transparent high-temperature-resistant quartz glass, the upper end of the window glass is provided with the objective lens of the stereomicroscope, under the illumination of the annular variable light source at the lower part of the objective lens, the stereomicroscope can observe the morphological change of the ultra-high molecular weight polyethylene resin powder in the heating mold cavity and the micropore forming process in real time through the observation hole and the window glass in a microscopic amplification (the amplification factor can be adjusted), and high-definition image shooting and storage are carried out through the display connected with the stereomicroscope, so that reliable experimental basis is provided for the research on the micropore forming mechanism of the ultra-high molecular weight polyethylene micropore filter core material prepared by the powder sintering method.

Drawings

The invention will be further described with reference to the accompanying drawings, which are only schematic illustrations and illustrations of the invention, and do not limit the scope of the invention.

FIG. 1 is a schematic structural diagram of an experimental apparatus according to the present invention;

FIG. 2 is a schematic perspective view of a visual sintering mold according to the present invention;

FIG. 3 is a cross-sectional view of a visual sintering die according to the present invention;

FIG. 4 is a photograph showing the morphology of the ultra-high molecular weight polyethylene resin powder during the powder sintering process, taken by the experimental apparatus of the present invention.

Wherein:

1-mounting a platform; 2-a display; 3-a focusing wheel; 4, connecting blocks; 4 a-height fixing knob; 5-upright column; 6-connecting piece; 7-a lens body hoop; 8-HDMI high definition video line connector; 81-HDMI high definition video line; 9-VGA video line connector; 91-VGA video line; 10-an electronic eyepiece; 11-an eyepiece; 12-a mirror body; 13-an annular variable light source; 14-visual sintering mould; 14 a-a base; 14 b-a cylinder; 14 c-end cap; 14 d-window glass; 14 e-a fastening screw; 14 f-thermocouple; 14 g-heating ring; 14 h-fastening screws; 15-heat insulation backing plate; 16-air blower.

Detailed Description

The following detailed description is given with reference to specific examples, but the scope of the present invention is not limited by the specific embodiments.

The invention provides a microscopic visual experimental device for sintering molding of ultra-high molecular weight polyethylene powder, which comprises a visual sintering mold 14, a body type microscope and a display 2, wherein the visual sintering mold is provided with a mold cavity, the upper end of the mold cavity is provided with a visual window, an objective lens of the body type microscope is arranged above the visual window, the body type microscope is connected with the display through a cable, and the condition in the mold cavity is displayed on the display in real time through the visual window by the body type microscope.

Specifically, as shown in fig. 1, the stereomicroscope includes a stand column 5, a focusing mechanism and a lens body 12, the stand column 5 is fixed on the mounting platform 1 through a connecting piece 6, an eyepiece 11, an electronic eyepiece 10 and an objective lens are arranged on the lens body 12, the electronic eyepiece 10 is connected with the display 2 through an HDMI high-definition video line 81 and a VGA video line 91, image information captured by the electronic eyepiece 10 can be transmitted to the display 2 through two video lines in real time, the display 2 displays the image on a screen in an enlarged manner, and the image is convenient to observe, record and store.

The focusing mechanism comprises a lifting arm which is sleeved on the upright post 5 in a sliding way, and a lens body 12 is fixed on the lifting arm. The lifting arm comprises a connecting block 4 sleeved on the upright post 5 and a lens hoop 7 fixed on the connecting block, the lens 12 is fixed in the lens hoop 7, and a height fixing knob 4a and a focusing wheel 3 are arranged on the connecting block 4. For sliding fit's relation between connecting block 4 and the stand 5, can make connecting block 4 drive the mirror staple bolt 7 and the mirror 12 reciprocates perpendicularly through height-adjusting fixed knob 4a, convenient quick focusing, focusing wheel 3 can make the mirror staple bolt 7 along with connecting block 4 slow movement from top to bottom in the vertical direction, is favorable to the accuracy to focus.

The outer wall of the objective lens at the lower end of the lens body 12 is provided with an annular variable light source 13, so that the brightness degree at the observation position can be conveniently adjusted.

The visual sintering mould 14 is arranged below an objective lens of the stereomicroscope, a heat insulation base plate 15 is arranged between the bottom of the visual sintering mould and the mounting platform 1, the heat insulation base plate 15 can be an environment-friendly composite silicate plate with the thickness of 10mm, the application range of the visual sintering mould is-40-700 ℃, when the visual sintering mould works, the temperature is up to 200 ℃, and the heat insulation base plate meets the use requirements of heat insulation and temperature resistance.

As shown in fig. 2 and 3, the visual sintering mold 14 is composed of a base 14a, a cylinder 14b, an end cap 14c, a window glass 14d, a heating ring 14g and a thermocouple 14 f. The end cover 14c and the base 14a are detachably connected to two ends of the cylinder 14b through fastening bolts 14e and 14h, respectively, an inverted cone frustum-shaped observation hole is formed in the center of one side of the end cover 14a, and the window glass 14d is pressed and fixed between the lower end face of the observation hole and the upper end face of the cylinder 14b through the end cover 14c through the fastening bolt 14 e. The window glass 14d, the base 14a and the cylinder 14b are combined to form a closed cylindrical cavity, which is the mold cavity. The base 14a and the end cap 14c are detachable, which facilitates demolding of the sintered and molded microporous product.

The material of the window glass 14d is transparent high-temperature-resistant quartz glass, can bear the working temperature of 200 ℃, has the thickness of 5mm, can bear the pressure generated by material expansion in the sintering process and does not influence the observation of a stereomicroscope on the state change of the material.

The heating ring 14g is installed on the outer wall of the barrel of the visual sintering mold 14, and the temperature control thermocouple 14f is installed at the radial position of the middle of the barrel and used for heating and controlling the temperature of the mold. The heating ring can adopt a stainless steel mica electric heating ring.

In the sintering process, because the mold is in a high-temperature state, the temperature between the mold and the objective lens is overhigh, heat is transferred to surface air, the hot air generates convection operation, the light in the area is changed due to the density change of the air, the refractive index is also changed continuously, interference is generated on the observation of a stereoscopic microscope, and the picture on the display 2 is shaken all the time. Therefore, a cooling blower 16 is arranged on the outer side of the visual sintering mold 14, and the air port of the blower 16 is slightly higher than the top surface of the visual sintering mold 14, so that hot air can be rapidly taken away by air blown by the blower 16, and an observation picture on a display screen is kept stable.

Examples

When the experiment for preparing the ultra-high molecular weight polyethylene (UHMWPE) microporous material by the powder sintering method is performed, firstly, the conducting wires are connected, the base 14a of the visual sintering mold 14 is connected with the cylinder 14b through the fastening bolt 14h, then, the UHMWPE resin powder is filled in the mold cavity to enable the upper surface of the material to be flush with the upper end face of the cylinder 14b, and then, the window glass 14d is tightly pressed and fixed between the lower end face of the observation hole and the upper end face of the cylinder 14b through the end cover 14c and the fastening bolt 14 e. The visual sintering mold 14 is placed under an objective lens of a stereomicroscope, a window glass 14d is vertically upward, a height fixing knob 4a and a focusing wheel 3 of the stereomicroscope are adjusted to enable an image observed through the window glass 14d to present the clearest picture on a screen of a display 2, then a blower 16 is started to enable air blown out nearly horizontally to face the window glass 14d so as to take hot air away, the visual sintering mold 14 is heated and controlled in temperature, in the process, state change of powder particles is observed in real time through the screen of the display 2, and the image is stored, and fig. 4 is a picture of the form of the ultrahigh molecular weight polyethylene resin powder in the embodiment.

The foregoing embodiments illustrate and describe the principles and general features of the present invention and its advantages. It will be understood by those skilled in the art that the present invention is not limited by the embodiments described above, which are given by way of illustration of the principles of the invention and are not to be taken as limiting the scope of the invention in any way, and that various changes and modifications may be made therein without departing from the scope of the invention as defined by the appended claims.