Stamping device for powder sample preparation of transmission electron microscope

Abstract

The utility model belongs to the technical field of electron microscope sample preparation, and particularly relates to a stamping device for transmission electron microscope powder sample preparation, which comprises a base, a shell arranged at the top of the base, a shaking mechanism arranged between the base and the shell, a bin door arranged at one end of the shell, and a storage bin arranged in the shell far away from the bin door, a triangular sliding block is slidably installed in the storage bin, a partition plate is hinged between the storage bin and the interior of the shell, and a supporting plate is hinged to the inner bottom of the shell. The storage bin is arranged in the shell, and the triangular sliding block in the storage bin is connected with the bin door through the pull rod, so that the triangular sliding block can be pulled to move to jack up one side of the supporting plate after a sample is compressed and formed and the bin door is opened; and meanwhile, the inclination of the supporting plate is used as a material guide plate, so that the material blocks can be conveniently taken out, and the use is more convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of electron microscope sample preparation, and relates to a stamping device for preparing powder samples for a transmission electron microscope. Background Art

[0002] Due to the high surface energy of powder samples and the large gaps between powder particles, it is not conducive to the observation of transmission electron microscopes. By pressing the powder sample into a thin slice with a thickness between dozens of nanometers and hundreds of nanometers suitable for transmission electron microscope observation, the gaps between powder particles can be eliminated, the contact area between particles can be increased, the density of the powder sample can be increased, which is conducive to the penetration of the electron beam, so as to obtain a clearer transmission electron microscope imaging effect. At the same time, by pressing, the distribution uniformity of the powder is improved, which helps to improve the accuracy of transmission electron microscope observation and analysis.

[0003] At present, when compacting powder materials, after the original powder material is poured into the sample tank, the situation of uneven distribution may occur, resulting in one side of the compacted sample being relatively tight and the other side being relatively loose, affecting the compacting and forming effect. In addition, there is also the problem that the pressed sample is not easy to take out. Summary of the Invention

[0004] Based on the problems existing in the prior art, the purpose of the utility model is to provide a stamping device for preparing powder samples for a transmission electron microscope, so as to solve the problems of poor forming effect caused by uneven tablet pressing and inconvenience in taking out in the prior art.

[0005] Based on the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A stamping device for preparing powder samples for a transmission electron microscope, comprising a base, a housing is arranged on the top of the base, a shaking mechanism is arranged between the base and the housing, a hatch door is arranged at one end of the housing, and a storage bin is arranged inside the housing away from the hatch door. A triangular slider is slidably installed inside the storage bin, a partition plate is hinged between the storage bin and the inside of the housing, a support plate is hinged to the inner bottom of the housing, support blocks are fixed on both sides of the bottom of the support plate away from the hatch door, a pull rod is hinged on the triangular slider, and one end of the pull rod away from the triangular slider is hinged to the hatch door. A telescopic cylinder is fixed on the top of the housing, and the output end of the telescopic cylinder extends into the housing, and a pressing plate is installed at the output end of the telescopic cylinder.

[0007] In this application, a jitter mechanism is provided between the base and the housing to facilitate jitter dispersion of the powder material placed on the support plate, so that it is evenly distributed, improving the uniformity of tablet pressing and the forming effect of tablet pressing. In addition, to facilitate the removal of the sample after tablet pressing, through the structural arrangement of the triangular slider, partition board, support plate and the pull rod hinged to the door of the bin, when the bin door is opened, the pull rod pulls the triangular slider, pushing the partition board to make the support plate tilt towards the door body, so as to facilitate the removal of the sample on the support plate.

[0008] Preferably, a sample groove is provided on the support plate, and a punch head matching with the sample groove is provided on the pressing plate. Further preferably, the sample grooves are of various different sizes.

[0009] On the support plate, various different sizes of sample grooves adapted to electron microscope observation can be provided. Through the stamping cooperation between the punch head and the sample groove, it can meet the simultaneous stamping preparation of samples of various different sizes during electron microscope sample preparation, improving the sample preparation efficiency.

[0010] For example, when the amount of sample is small, it is very difficult to prepare a qualified transmission electron microscope sample with a small amount of sample using the existing punching sample preparation device with a fixed size, and there is often an uneven distribution. However, the various different sizes of sample grooves provided on the support plate of this application can use the sample groove with a small aperture when the amount of sample is small, so as to press out a transmission electron microscope sample with a thickness and uniformity meeting the requirements.

[0011] Preferably, the jitter mechanism includes a spring and a vibration motor. The spring is located between the base and the housing, and the top of the spring is fixedly connected to the housing, and the bottom of the spring is fixedly connected to the base. The vibration motor is fixed at the bottom of the housing.

[0012] Preferably, limiting rods are evenly arranged on the top of the base, and limiting grooves matching with the limiting rods are provided at the bottom of the housing. The inner diameter of the limiting groove is larger than the end face area of the limiting rod.

[0013] Preferably, two sets of telescopic cylinders are provided.

[0014] Preferably, a placement groove is provided on one side of the top of the base away from the storage bin, and a collection hopper is arranged inside the placement groove.

[0015] Preferably, a handle is fixed on the bin door, and a rubber grip is provided on the handle.

[0016] The beneficial effects of the present utility model are:

[0017] A stamping device for preparing powder samples for a transmission electron microscope provided by the present utility model. The arrangement of the jitter mechanism composed of a spring and a vibration motor between the base and the housing can jitter the housing after the feeding on the support plate is completed, flatten the raw materials placed on the support plate, and ensure a uniform forming effect. In addition, the setting of the storage bin inside the housing, using the triangular slider inside the storage bin connected to the bin door through a pull rod, enables the device to pull the triangular slider to move during the opening of the bin door after compression molding, lift one side of the support plate, so that the stamping formed material block on the support plate loosens or detaches with the inclination of the support plate, and at the same time, utilize the inclination of the support plate as a guide plate for use, facilitating the removal of the sample preparation material after stamping and making it more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a side sectional view of the stamping device for the embodiment;

[0019] Figure 2 It is a side sectional view of the use state of the stamping device for the embodiment;

[0020] Figure 3 It is the front view of the stamping device for the embodiment.

[0021] In the figure: 1 - base, 2 - housing, 3 - bin door, 4 - support plate, 5 - support block, 6 - storage bin, 7 - triangular slider, 8 - partition board, 9 - pull rod, 10 - telescopic cylinder, 11 - pressing plate, 111 - pressing head, 12 - spring, 13 - vibration motor, 14 - limiting rod, 15 - limiting groove, 16 - collecting hopper, 17 - placing groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] To make the technical solutions of the present utility model clearer and more definite for those skilled in the art, the present utility model will be further described in detail below with reference to the embodiments and the accompanying drawings, but the embodiments of the present utility model are not limited thereto.

[0023] As Figures 1 to 3 shown, this embodiment provides a stamping device for preparing powder samples for a transmission electron microscope, including a base 1. A housing 2 is arranged on the top of the base 1. A jitter mechanism is arranged between the base 1 and the housing 2. A bin door 3 is arranged at one end of the housing 2. And a storage bin 6 is arranged inside the housing 2 away from the bin door 3. A triangular slider 7 is slidably installed inside the storage bin 6. A partition board 8 is hinged between the storage bin 6 and the inside of the housing 2. A support plate 4 is hinged to the inner bottom of the housing 2. Support blocks 5 are fixed on both sides of the bottom of the support plate 4 away from the bin door 3. A pull rod 9 is hinged to the triangular slider 7, and one end of the pull rod 9 away from the triangular slider 7 is hinged to the bin door 3. A telescopic cylinder 10 is fixed on the top of the housing 2, and the output end of the telescopic cylinder 10 extends into the interior of the housing 2. A pressing plate 11 is installed at the output end of the telescopic cylinder 10.

[0024] The jitter mechanism is as Figure 1 shown, including a spring 12 and a vibration motor 13. The spring 12 is located between the base 1 and the housing 2, and the top of the spring 12 is fixedly connected to the housing 2, and the bottom of the spring 12 is fixedly connected to the base 1. The vibration motor 13 is fixed to the bottom of the housing 2. The vibration of the vibration motor 13 is used to drive the housing 2 to vibrate, and the materials placed on the support plate 4 in the housing 2 are jittered and flattened to ensure uniform distribution of the materials. In order to further improve the efficiency of punching and sample preparation, sample slots of various different sizes are opened on the support plate 4, and a pressing head 111 matching the sample slots is provided on the pressing plate 11. Through the stamping cooperation between the pressing head 111 and the sample slots, various different sizes of tablet samples suitable for electron microscope observation are prepared.

[0025] The top of the base 1 is uniformly provided with limit rods 14, and the bottom of the housing 2 is provided with limit slots 15 matching the limit rods 14. The inner diameter of the limit slots 15 is larger than the end face area of the limit rods 14. The limit rods 14 are limited by the limit slots 15 to ensure the stability between the housing 2 and the base 1.

[0026] There are two sets of telescopic cylinders 10, which improve the extrusion effect of the device.

[0027] A placement groove 17 is opened on one side of the top of the base 1 away from the storage bin 6, and a collection hopper 16 is arranged inside the placement groove 17. The collection hopper 16 is used to collect the debris falling inside the housing 2 to ensure the cleanliness of the site.

[0028] A handle is fixed on the bin door 3, and a rubber grip is arranged on the handle to facilitate opening the bin door 3.

[0029] The working process of the punching device for preparing powder samples for transmission electron microscopy provided in this embodiment is as follows:

[0030] Put the raw materials into the sample slots of the support plate 4 in the housing 2, then start the vibration motor 13 to drive the housing 2 to jitter, and shake the raw materials in the sample slots of the support plate 4 evenly. Then start the telescopic cylinder 10 to drive the pressing plate 11 to move downward to extrude the raw materials. After extrusion and forming, open the bin door 3. During the opening process of the bin door 3, the triangular slider 7 is driven by the pull rod 9 to slide into the bottom of the support plate 5 from the inside of the storage bin 6, and one end of the support plate 5 is lifted. The formed material block slides or loosens from the support plate 5 and is taken out manually. The material block sliding from the support plate 5 slides out from the bin door 3. At the same time, as the support plate 5 tilts, the debris accumulated on the surface area of the support plate 5 also slides down and enters the inside of the collection hopper 16 for storage. After the material block slides out, close the bin door 3, and the triangular slider 7 resets. Repeat the above steps to compress the powder materials.

[0031] As described above, it is only a further embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the scope disclosed by the present utility model, according to the technical solution and its concept of the present utility model, makes equivalent substitutions or changes, and all belong to the protection scope of the present utility model.

Claims

1. A stamping device for preparing a powder sample for a transmission electron microscope, characterized in that: It includes a base (1), a housing (2) is arranged on the top of the base (1), a shaking mechanism is arranged between the base (1) and the housing (2), a bin door (3) is arranged at one end of the housing (2), and a storage bin (6) is arranged inside the housing (2) far away from the bin door (3). A triangular slider (7) is slidably installed inside the storage bin (6). A partition plate (8) is hinged between the storage bin (6) and the inside of the housing (2). A support plate (4) is hinged to the inner bottom of the housing (2). Support blocks (5) are fixed on both sides of the bottom of the support plate (4) far away from the bin door (3). A pull rod (9) is hinged to the triangular slider (7), and one end of the pull rod (9) far away from the triangular slider (7) is hinged to the bin door (3). A telescopic cylinder (10) is fixed on the top of the housing (2), and the output end of the telescopic cylinder (10) extends into the inside of the housing (2). A pressing plate (11) is installed at the output end of the telescopic cylinder (10).

2. The stamping device for preparing a powder sample for a transmission electron microscope according to claim 1, wherein A sample groove is formed on the support plate, and a pressing head (111) matching the sample groove is arranged on the pressing plate.

3. The stamping device for preparing powder samples for a transmission electron microscope according to claim 1, wherein: The shaking mechanism includes a spring (12) and a vibration motor (13). The spring (12) is located between the base (1) and the housing (2), the top of the spring (12) is fixedly connected to the housing (2), the bottom of the spring (12) is fixedly connected to the base (1), and the vibration motor (13) is fixed to the bottom of the housing (2).

4. A stamping device for preparing powder samples for a transmission electron microscope according to claim 1, characterized in that: Limit rods (14) are evenly arranged on the top of the base (1), a limit groove (15) matching the limit rods (14) is arranged at the bottom of the housing (2), and the inner diameter of the limit groove (15) is larger than the end face area of the limit rods (14).

5. A stamping device for preparing powder samples for a transmission electron microscope according to claim 1, characterized in that: Two groups of telescopic cylinders (10) are provided.

6. The stamping device for preparing powder samples for a transmission electron microscope according to claim 1, characterized in that: A placement groove (17) is formed on one side of the top of the base (1) far away from the storage bin (6), and a collection hopper (16) is arranged inside the placement groove (17).

7. A stamping device for preparing a powder sample for a transmission electron microscope according to claim 1, characterized in that: A handle is fixed on the bin door (3), and a rubber grip is arranged on the handle.

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