KR101482980B1 - A Roll mold to prepare transmission electron microscopy specimens for in-situ straining observation - Google Patents

Abstract

The roll mold for producing a sample for real-time tensile transmission electron microscopic observation according to the present invention comprises: an upper roller and a lower roller rotating with respect to a rotation center which does not intersect with each other; and an elastic restoring force And a rotation urging portion for urging the upper roller and the lower roller to rotate in opposite directions by providing a rotating force to any one of the upper roller and the lower roller, The outer surface of the lower roller is formed with a plurality of forming portions for pressing a thin plate material to form a sample for real time tensile transmission electron microscopic observation.

Description

[0001] The present invention relates to a roll mold for preparing samples for real-time tensile transmission electron microscope observation,

The present invention relates to a roll mold for producing a sample for observing a real time transmission electron microscope and a transmission electron microscope. More particularly, the present invention relates to a roll mold for continuously receiving a thin sheet material, rolling motion with respect to a thin sheet material, And a roll mold for producing a sample for observing in real time a tensile transmission electron microscope capable of producing a sample for observation.

The present invention relates to a roll mold for producing a sample for observing in real time a tensile transmission electron microscope capable of continuously forming a large number of samples when a roll mold is rotated, provided with a molding part at a large number of outer surfaces of the roll mold.

The present invention relates to a roll mold for producing a sample for observing in real time a tensile transmission electron microscope capable of simultaneously obtaining samples of various shapes by having different shapes of forming parts.

A sample for real-time tensile transmission electron microscope observation was prepared as shown in Fig. 1, in which the fixing holes 1 and 2 were perforated at both ends, respectively, and the length and width of the sample were rectangles of 2.5 mm x 11.5 mm, A pair of slots 3 and 4 are punched side by side to form a cross section between the slots 3 and 4. The area A is the observation area of the TEM during the strain test and forms the outer cross section of the slot 3, And the B site is formed as a supporting part for maintaining the shape of the observation area A.

Also, since the sample SP has a relatively thin thickness and a complicated shape and an exact dimensional condition is required, the sample SP is limited to be manufactured manually.

Accordingly, Korean Patent No. 10-0884232 discloses a sample production apparatus for a strain test of a transmission electron microscope.

2, a hole for forming the lower holder 10, the fixing holes 1 and 2 and the slots 3 and 4 is formed, and the lower holder 10, A die holder 20 mounted on the die holder 10, a guide post 30 vertically installed on the upper portion of the lower holder 10, a hole 30 formed in the die holder 20 so as to be movable up and down on the guide post 30, And a punch assembly 50 which is fixed to an upper holder 40 guided by the guide posts 30 and is lifted up and down to hit a perforation hole intended for a sample SP, And an elastic member 50 installed on the guide post 30 to support the upper holder 40 so that the punch assembly 50 can be guided by the guide posts 30 and move up and down.

However, the conventional manufacturing apparatus having the above-described configuration has the following problems.

That is, the fabrication apparatus must sequentially perform the blanking process of holes (1,2), slots (3,4), and samples (SP) while moving the sample material by a predetermined pitch. The sample can be made.

Therefore, there is a problem that the productivity is lowered.

In addition, the holes 1 and 2 must be performed several times as a guide hole for positioning when puncturing the slots 3 and 4 or blanking the sample SP. However, even if the conveying distance of the sample material is irregular There is a problem that the holes 1 and 2 are extended and can not act as guides.

In addition, the defect rate increases sharply due to the above-described problems, and the dimensional accuracy is also not satisfactory.

SUMMARY OF THE INVENTION The object of the present invention is to solve the problems of the prior art as described above, and it is an object of the present invention to provide a method and apparatus for continuously observing a transmission electron microscope by continuously supplying a thin plate material, And to provide a roll mold for producing a sample for real-time tensile transmission electron microscope observation.

It is another object of the present invention to provide a roll mold for manufacturing a sample for observing in real time a tensile transmission electron microscope such that a plurality of samples can be continuously produced when a roll mold is rotated, .

It is still another object of the present invention to provide a roll mold for manufacturing a sample for real-time tensile transmission electron microscope observation in which shapes of a plurality of formed portions are configured differently so that samples of various shapes can be simultaneously obtained.

The roll mold for producing a sample for real-time tensile transmission electron microscopic observation according to the present invention comprises: an upper roller and a lower roller rotating with respect to a rotation center which does not intersect with each other; and an elastic restoring force And a rotation urging portion for urging the upper roller and the lower roller to rotate in opposite directions by providing a rotating force to any one of the upper roller and the lower roller, The outer surface of the lower roller is formed with a plurality of forming portions for pressing a thin plate material to form a sample for real time tensile transmission electron microscopic observation.

The upper roller and the lower roller are provided at one side thereof with a guide for limiting the movement of the upper roller and the lower roller in the direction of the rotation axis while maintaining a state where the upper roller and the lower roller are engaged with each other at the time of rotation.

The shaping section is characterized by being provided with a shearing force to the thin plate material by being fitted or protruded at positions corresponding to each other on the outer peripheral surfaces of the upper roller and the lower roller.

The forming unit is formed by being recessed only on an outer circumferential surface of any one of the upper roller and the lower roller, thereby providing a shear force to the thin plate material.

The upper roller and the lower roller provide a frictional force to the sheet material during rotation to force the sheet material to be conveyed.

And the upper roller and the lower roller are continuously in line contact when rotating.

And the sample is passed between the upper roller and the lower roller and then stays stuck on the thin plate material.

In the present invention, a thin sheet material is continuously supplied, and a thin sheet material is line-contacted while rolling in a rolling direction to provide a shear force, thereby enabling continuous production of a sample for a transmission electron microscope observation.

Therefore, there is an advantage that continuous production of samples having high dimensional accuracy is possible and ease of use is improved.

In addition, in the present invention, there is an advantage that a plurality of shaped portions can be configured differently and samples of various shapes can be obtained at the same time.

1 is a perspective view showing the appearance of a sample for general real-time tensile transmission electron microscope observation.
2 is a perspective view showing a configuration of a sample manufacturing apparatus according to the prior art.
3 is a photograph of a sample prepared using a roll mold for producing a sample for real-time tensile transmission electron microscope observation according to the present invention.
4 is a longitudinal sectional view showing the internal structure of a roll mold for producing a sample for real-time tensile transmission electron microscope observation according to the present invention.
5 is a side elevational side view showing the internal structure of a roll mold for producing a sample for real-time tensile transmission electron microscopic observation according to the present invention.
6 is a partial cross-sectional view showing the action of rollers constituting the recess in the roll mold for producing a sample for real-time tensile transmission electron microscope observation according to the present invention.
Figure 7 is an enlarged view of one embodiment of Figure 6;
Figure 8 is an enlarged view of another embodiment of Figure 6;
9 and 10 are cross-sectional views of a sheet material produced via a roll mold for producing a sample for real time tensile transmission electron microscopic observation according to the present invention.

The construction of the roll mold 100 for producing a sample for real-time tensile transmission electron microscope observation according to the present invention will be described with reference to FIGS. 3 and 4 attached hereto.

FIG. 3 is a photograph of a sample prepared using a roll mold 100 for producing a sample for real-time tensile transmission electron microscope observation according to the present invention, and FIG. 4 is a graph showing a real-time Tensile Transmission Electron Microscope There is shown a longitudinal sectional view showing the internal structure of a roll mold 100 for producing a sample for use in the present invention.

Prior to this, terms and words used in the present specification and claims should not be construed in a conventional and dictionary sense, and the inventor may appropriately define the concept of the term in order to describe its invention in the best possible way It should be construed as meaning and concept consistent with the technical idea of the present invention.

Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely preferred embodiments of the present invention, and are not intended to represent all of the technical ideas of the present invention. Therefore, various equivalents It should be understood that water and variations may be present.

The roll mold 100 for producing a sample for real-time tensile transmission electron microscopic observation according to the present invention is for producing a sample T for real time tensile transmission electron microscope observation as shown in FIG. 3, (T) can be continuously manufactured.

That is, the roll mold 100 is configured to be able to produce various shapes of samples T by providing shear force to the thin plate material W by continuously supplying and rotating the thin plate material W.

4, the roll mold 100 includes a base 110 on which a plurality of components are supported and mounted, and a pair of rolls 110, which are rotated in opposite directions on the base 110, The upper roller 120 and the lower roller 130 form a sample T while rolling in a rolling motion and a supporting table rotatably supporting an upper rotating shaft 122 serving as a rotating center of the upper roller 120 A compression means 150 coupled to the upper side of the support 140 for rotatably supporting a lower rotation shaft 132 which is a rotation center of the lower roller 130, And a rotating force unit 160 for applying a rotational force provided from the outside to one of the upper and lower rotating shafts 122 and 132 to force the remaining of the upper rotating shaft 122 and the lower rotating shaft 132 to cooperate with each other.

The base 110 supports the loads of the upper roller 120, the lower roller 130, the support 140, the compression means 150 and the rotation urging portion 160 and is firmly coupled to the support 140 Thereby restricting the movement of the lower roller 130.

A lower rotation shaft 132 is axially coupled to the upper portion of the support table 140 so as to support the rotation of the lower rotation shaft 132. The upper roller 120 and the lower roller 130 can control the separation distance .

The upper roller 120 and the lower roller 130 generate a frictional force on the thin plate material W passing between them and forcefully transfer the thin plate material W to generate a shearing force to produce a sample T .

Therefore, the compression means 150 is provided to more effectively generate such frictional force and shear force.

In the embodiment of the present invention, the lower portion of the compression means 150 is fixedly coupled to the support base 140, the upper portion of the compression means 150 is configured to be rotatable through the upper rotation shaft 122, A restoring force is generated so that the upper roller 120 acts to apply pressure in the direction of approaching the lower roller 130.

Therefore, the compression means 150 is provided with an elastic member 152 for generating an elastic restoring force, and the elastic member 152 is preferably applied with a tension spring having an elastic restoring force in a tensioned state.

The upper roller 120 and the lower roller 130 generate a shearing force on the thin plate material W to form the sample T. That is, the forming unit 170 is provided on the outer circumferential surfaces of the upper roller 120 and the lower roller 130, and the forming unit 170 is configured such that when the upper roller 120 and the lower roller 130 are rotated, It is possible to manufacture a sample T having a shape corresponding to the forming portion 170 by generating a shearing force by contacting the upper surface or the lower surface of the work W.

In the exemplary embodiment of the present invention, a plurality of the forming units 170 are formed on the upper and lower rollers 120 and 130, respectively.

When the rolling of the sheet material W is performed by the counterclockwise rotation of the upper roller 120 and the lower roller 130, the sheet material W is separated from the upper roller 120 and the lower roller 130 130, and the sample T can be formed by receiving a shearing force when the molding unit 170 is contacted with the sample.

The upper roller 120 and the lower roller 130 are rotated with respect to the rotation center parallel to each other so that the outer circumferential surface is in line contact with the outer surface of the thin plate material W to generate a shearing force, 150 to generate a larger shearing force by a force (compressive force) in a direction close to each other.

The upper rotation shaft 122 and the lower rotation shaft 132 are configured to rotate in opposite directions and have the same rotation speed. The upper rotation shaft 122 and the lower rotation shaft 132 are configured to interlock with each other by the rotation urging unit 160.

That is, in the embodiment of the present invention, the rotating force unit 160 is constructed such that a pair of spur gears are engaged with each other. In the spur gear coupled to the lower rotating shaft 132, a rotating force provided from the outside is transmitted to the lower rotating shaft 132 A force transmitting portion 162 is provided.

The rotation urging unit 160 may be constituted by a belt, a pulley, a motor, or the like as long as the upper rotation shaft 122 and the lower rotation shaft 132 cooperate with each other in opposite directions and can rotate at the same time.

The upper roller 120 and the lower roller 130 are provided with a guide 180 for increasing the dimensional accuracy of the sample T during the production of the sample T by providing a shear force to the thin plate material W.

The guide 180 restricts the movement of the upper roller 120 and the lower roller 130 in the longitudinal direction of the upper rotation shaft 122 or the lower rotation shaft 132 to prevent the forming unit 170 from being shaken .

The guide 180 may be configured to have different outer diameters on the left and right sides of the upper roller 120 and the lower roller 130, So that relative movement of the lower roller 130 and the lower roller 130 can be restricted.

5 is a side sectional view showing the internal structure of a roll mold 100 for producing a sample T for real time tensile transmission electron microscope according to the present invention.

The upper roller 120 and the lower roller 130 rotate in opposite directions and the sheet material W positioned on the left side is conveyed in the right direction by the friction force between the upper roller 120 and the lower roller 130, do.

A shearing force is applied to the thin plate material W by the forming unit 170 formed on the upper roller 120 and the lower roller 130 so that the sample T can be formed, It is possible to increase the shearing force applied to the thin plate material W by pushing both sides of the pressing block 154 downward and forcing the pressure in the direction in which the upper rotating shaft 122 approaches the lower rotating shaft 132. [

6 is a partial cross-sectional view showing the action of rollers constituting a recess in the roll mold 100 for producing a sample (T) for real-time tensile transmission electron microscopy according to the present invention.

As shown in the figure, the forming unit 170 is formed at positions corresponding to the outer circumferential surfaces of the upper roller 120 and the lower roller 130, respectively, so that shear force is applied to the thin plate material W in the vicinity of the thin plate material W .

The forming unit 170 can be variously modified and will be described with reference to FIGS. 7 and 8

Fig. 7 is an enlarged view of one embodiment of Fig. 6, and Fig. 8 is an enlarged view of another embodiment of Fig.

As shown in FIG. 7, the forming unit 170 may be formed as a concave-convex shape which can be combined with the upper roller 120 and the lower roller 130 as shown in FIG. 7, and the upper roller 120 and the lower roller 130 130 may be recessed only on the outer circumferential surface.

That is, the outer circumferential surfaces of the upper roller 120 and the lower roller 130 may be controlled to rotate while maintaining a state of being separated by a dimension smaller than the thickness of the thin plate, thereby providing a shearing force to the thin plate material W.

More specifically, the upper roller 120 has a protruding molding part 170, and the outer peripheral surface of the lower roller 130 has a recessed molding part 170, Shear force can be generated in the thin plate material W.

As shown in FIG. 8, the forming unit 170 is formed only on the outer circumferential surface of the lower roller 130. When the upper roller 120 and the lower roller 130 are closely spaced apart from each other, A shear force can be generated by restricting the thin plate to have a small dimension so that the forming portion 170 of the lower roller 130 is filled with the thin alloy plate.

Accordingly, the forming unit 170 can be modified in various ways as long as the frictional force and the shearing force can be generated simultaneously by the rotation of the upper roller 120 and the lower roller 130.

9 and 10 are sectional views of a thin plate material W produced via a roll mold 100 for producing a sample T for real time tensile transmission electron microscopy according to the present invention.

As shown in these drawings, the thin plate material W may obtain a sample T adhered in a stepped shape after receiving the shearing force by the forming unit 170 while passing through the roll metal mold 100.

That is, since the thin plate material W has a very thin thickness, for example, a thickness of 100 μm or less, a predetermined shearing force is applied to the plate material W, and when the plate material is positioned in the downward direction as shown in FIGS. 9 and 10, It may be separated from the sheet material W by a force.

Of course, the sample T may be configured to fall downward after passing through the roll metal mold 100 without maintaining the state of being adhered to the thin plate material W in a stepped state as shown in FIGS.

10, the direction of the shearing force applied to the composite material may be provided in various directions so that the outer circumference of the fixing hole H and the sample T may be formed at the same time.

The scope of the present invention is not limited to the above-described embodiments, and many other modifications based on the present invention will be possible to those skilled in the art within the scope of the present invention.

100. Roll mold 110. Base
120. Upper roller 122. Upper rotary shaft
130. Lower roller 132. Lower shaft
140. Support 150. Compression means
152. Elastic member 154. Pressing block
160. Turning force part 162. Force transmitting part
170. Molding part 180. Guide
H. Fixing Hole T. Sample
W. Sheet material

Claims (7)

delete An upper roller and a lower roller that rotate with respect to a rotation center having the same outer diameter and do not cross each other,
A compression means for providing a resilient restoring force to any one of the upper roller and the lower roller to generate a compressive force in a thin plate material having a thickness of 100 mu m or less and located between the upper roller and the lower roller;
A rotation urging unit that is gear-engaged with one of the upper roller and the lower roller and urges the upper roller and the lower roller to rotate in opposite directions at the same speed,
And a guide for restricting the movement of the upper roller and the lower roller in the rotation axis direction by maintaining a state where the upper roller and the lower roller have different outer diameters and are positioned on the same straight line and are engaged with each other at the time of rotation,
Wherein a plurality of molding parts for forming a sample for real time tensile transmission electron microscope observation are formed on the outer surfaces of the upper roller and the lower roller with a depth that is shallower than the thickness of the thin plate material and a part of the thin plate material is received therein. Roll mold for the production of samples for electron microscope observation.
The apparatus according to claim 2,
And a shearing force is applied to the thin plate material by being fitted or protruded at a position corresponding to each other on the outer circumferential surface of the upper roller and the lower roller.
The apparatus according to claim 2,
Wherein the first and second rollers are formed only on the outer circumferential surface of the upper roller and the lower roller to provide a shear force to the thin plate material.
5. The roll mold of claim 3 or 4, wherein the upper and lower rollers provide a frictional force to the sheet material during rotation to force the sheet material.
6. The roll mold of claim 5, wherein the upper roller and the lower roller are continuously in line contact upon rotation.
7. The roll mold of claim 6, wherein the sample passes between an upper roller and a lower roller, and remains stably attached to the sheet material.

Images