TEM clamp

Abstract

The invention relates to the technical field of clamps, in particular to a TEM clamp which comprises a base, a sliding way is formed in the top of the base, and a threaded rod is fixedly connected into the sliding way. When a sample is clamped by a clamping silica gel pad, the clamping silica gel pad is more attached to the surface of the sample due to the fact that the material of the clamping silica gel pad is very soft, the inner side wall of the clamping silica gel pad is provided with a plurality of distribution grooves, and a plurality of magnetic balls are arranged in the distribution grooves, so that when the clamping silica gel pad is used for clamping the sample, the clamping silica gel pad is more tightly attached to the surface of the sample. The dense magnetic balls can be attached to the surface of the sample, due to the fact that the number of the magnetic balls is large, repulsive force exists among the multiple magnetic balls, and the magnetic balls attached to the outer wall of the sample can tightly clamp the outer wall of the sample through the repulsive force of other magnetic balls. Furthermore, the surface, attached to the outer wall of the sample, of the clamping silica gel pad can disperse the acting force on the magnetic ball, so that the stress is more uniform when the sample is clamped.

Description

Technical Field

[0001] The invention relates to a TEM fixture, belonging to the field of fixtures. Background Art

[0002] The TEM clamp is a special device used to fix and position samples in a transmission electron microscope. Its core function is to ensure that the sample maintains a stable and precise position under electron beam irradiation to achieve high-resolution imaging. The principle of the EM clamp is to set up several springs, one end of which is fixed with a clamping rod. Then, several clamping rods can clamp samples of different shapes. The clamping rod in contact with the sample will retract, and the sample will be clamped by the force of the spring. Then, multiple clamping rods will move according to the shape of the sample, so that samples of different shapes can be clamped.

[0003] The TEM clamp in the prior art clamps the sample by means of a plurality of clamping rods. The clamping rods in contact with the sample surface retract and clamp the sample by means of spring force. Due to the large number of clamping rods, samples of different shapes can be clamped. However, since the clamping rods have a certain diameter, there is a certain gap between the clamping ends. Therefore, when the sample is clamped, the portion of its surface between the multiple clamping ends does not receive the clamping force, resulting in uneven force on the surface of the sample when it is clamped, thereby reducing the clamping stability of the device and the clamping effect. Summary of the Invention

[0004] In view of the deficiencies in the prior art, the present invention aims to provide a TEM fixture to solve the problems raised in the above background technology.

[0005] In order to achieve the above-mentioned purpose, the present invention is implemented through the following technical solution: a TEM clamp, including a base, a slide is provided on the top of the base, a threaded rod is fixedly connected to the inside of the slide, a moving box is slidably connected to the inner wall of the slide, a driving component is provided inside the moving box, a clamping box is fixedly connected to the top of the moving box, a moving block is slidably connected to the inner wall of the clamping box, and a clamping component is provided on one side of the moving block.

[0006] The clamping component includes a clamping silicone pad fixedly connected to one side of the moving block, a groove is provided inside the clamping silicone pad, a distribution groove is provided on the inner wall of the groove, a magnetic ball is provided inside the distribution groove, a silicone airbag is fixedly connected to the inside of the groove, an air pipe is fixedly connected to one side of the silicone airbag, a moving plate is fixedly sleeved on the outer wall of the air pipe, and a constant pressure component is provided inside the clamping box.

[0007] Specifically, the driving component includes a bearing and a rotating rod. The bearing is embedded in the inner wall of the moving box. The inner ring of the bearing is fixedly sleeved with a threaded sleeve. The threaded sleeve is threadedly connected to the threaded rod. The outer wall of the threaded sleeve is fixedly sleeved with a first bevel gear. The rotating rod is rotatably sleeved on the inner wall of the moving box. One end of the rotating rod extending to the inside of the moving box is fixedly connected with a second bevel gear, and the second bevel gear is meshed with the first bevel gear.

[0008] Specifically, one end of the rotating rod extending to the outside of the moving box is fixedly connected to a rotating disk, and an outer wall of the rotating disk is fixedly connected to a rotating handle.

[0009] Specifically, a limiting channel is provided on the inner side wall of the slideway, one end of the rotating rod passes through the limiting channel and extends to the outside of the base, and the outer wall of the rotating rod is slidably connected to the inner wall of the limiting channel.

[0010] Specifically, one end of the air pipe passes through the clamping silicone pad and the moving block and extends to the interior of the clamping box, and the outer wall of the moving plate is slidably connected to the inner wall of the clamping box.

[0011] Specifically, the constant pressure component includes an air cylinder fixedly connected to the inner wall of the clamping box, the inner wall of the air cylinder is fixedly sleeved with an air outlet pipe, the outer wall of the air outlet pipe is provided with an electric air valve, the outer wall of the air cylinder is provided with an air pressure detection gauge, the outer wall of the air outlet pipe is fixedly connected to an air pump, and a constant pressure tube is provided on one side of the air pump.

[0012] Specifically, one end of the air outlet pipe passes through the clamping box and extends to the outside of the clamping box, and the air outlet pipe is fixedly connected to the clamping box.

[0013] Specifically, one end of the constant pressure tube passes through the gas cylinder and extends to the interior of the gas cylinder, and the constant pressure tube is fixedly connected to the gas cylinder.

[0014] Specifically, a sealing member is fixedly connected to one side of the air cylinder. The sealing member is a circular ring structure and is slidably connected to the air pipe.

[0015] Specifically, a limiting sliding groove is provided on the inner wall of the air cylinder, a limiting slider is fixedly installed on the outer wall of the air pipe, and the limiting slider is slidably connected to the limiting sliding groove.

[0016] Beneficial effects of the present invention:

[0017] 1. A TEM clamp of the present invention clamps the sample by a clamping silicone pad. Since the material of the clamping silicone pad is very soft, the clamping silicone pad fits the sample surface better. Since the inner side wall of the clamping silicone pad is provided with a plurality of distribution grooves, a plurality of magnetic balls are provided inside the plurality of distribution grooves. Therefore, when the clamping silicone pad clamps the sample, dense magnetic balls will fit on the surface of the sample. Since the magnetic balls are magnetic and there are a large number of them, there will be a repulsive force between the multiple magnetic balls. Therefore, the magnetic balls fitting the outer wall of the sample will tightly clamp the outer wall of the sample through the repulsive force of other magnetic balls. Therefore, the side of the clamping silicone pad fitting on the outer wall of the sample will disperse the force of the magnetic balls, so that the force on the sample is more uniform when being clamped, thereby improving the clamping stability of the device and improving the clamping effect of the device.

[0018] 2. A TEM clamp of the present invention drives the moving block to move into the inside of the clamping box after clamping the sample through the clamping silicone pad, and then the air pipe moves into the inside of the air cylinder, and then the gas inside the air cylinder enters the silicone airbag through the air pipe, and then the silicone airbag drives the clamping silicone pad to have a clamping force on the sample. When the air pressure inside the air cylinder is large, it means that the clamping force on the sample is too large, and then the air pressure detection meter will detect it, and the electric air valve will open to exhaust through the air outlet pipe, thereby protecting the clamped sample.

[0019] 3. A TEM clamp of the present invention rotates the handle by manipulation, and then the second bevel gear drives the first bevel gear to rotate, and then the threaded sleeve rotates. Since the threaded sleeve is threadedly connected to the threaded rod, the threaded sleeve will move on the threaded rod, and then the moving box slides inside the slide, which can drive the clamping box to move in the direction of another clamping box. After the sample is clamped and fixed and the sample is observed, the handle is manipulated in the reverse direction to drive the clamping box to reset through the same principle, and then the sample can be removed, making the operation of the device simple and easy to use, bringing great convenience to the user.

[0020] 4. A TEM clamp of the present invention can be used to clamp and fix the sample and observe the sample. After the sample is clamped and fixed and the sample is observed, the handle is rotated in the reverse direction to drive the clamping box to reset through the same principle, and then the sample can be removed. At this time, the silicone airbag is no longer squeezed, and the inside of the air cylinder is no longer in a high-pressure state. The air pump can inflate the inside of the air cylinder through the constant pressure tube, so that the air pressure inside the air cylinder returns to its original state, and will not affect the next clamping work, further meeting the use requirements of the device and improving the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Other features, objects and advantages of the present invention will become more apparent upon reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0022] Figure 1 This is a structural schematic diagram of a TEM fixture of the present invention;

[0023] Figure 2 Schematic diagram of the structure of the adjustment plate in the present invention;

[0024] Figure 3 Schematic diagram of the interior of the liquid level tube in the present invention;

[0025] Figure 4 It is a structural diagram of the collection frame in the present invention;

[0026] Figure 5 Schematic diagram of the structure of the distribution trough;

[0027] Figure 6 Schematic diagram of the internal structure of the fixed column in the present invention;

[0028] Figure 7 Schematic diagram of the internal structure of the fixed column in the present invention.

[0029] In the figure: 1. Base; 2. Slide; 3. Threaded rod; 4. Moving box; 41. Bearing; 42. Threaded sleeve; 43. First bevel gear; 44. Rotating rod; 45. Rotating disk; 46. Second bevel gear; 47. Rotating handle; 5. Clamping box; 6. Moving block; 61. Clamping silicone pad; 62. Groove; 63. Silicone airbag; 64. Air pipe; 641. Air cylinder; 642. Limiting slide groove; 643. Seal; 644. Air outlet pipe; 645. Electric air valve; 646. Air pressure detection gauge; 647. Air pump; 648. Constant pressure tube; 65. Moving plate; 7. Distribution trough; 71. Magnetic ball; 8. Limiting channel. DETAILED DESCRIPTION

[0030] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0031] See also Figure 1-Figure 7 The present invention provides a technical solution: a TEM fixture, comprising a base 1, a slide 2 is provided on the top of the base 1, a threaded rod 3 is fixedly connected to the inside of the slide 2, a moving box 4 is slidably connected to the inner wall of the slide 2, a driving component is provided inside the moving box 4, a clamping box 5 is fixedly connected to the top of the moving box 4, a moving block 6 is slidably connected to the inner wall of the clamping box 5, and a clamping component is provided on one side of the moving block 6;

[0032] The clamping component includes a clamping silicone pad 61 fixedly connected to one side of the moving block 6, a groove 62 is provided inside the clamping silicone pad 61, a distribution groove 7 is provided on the inner wall of the groove 62, a magnetic ball 71 is provided inside the distribution groove 7, a silicone airbag 63 is fixedly connected to the inside of the groove 62, an air pipe 64 is fixedly connected to one side of the silicone airbag 63, a moving plate 65 is fixedly sleeved on the outer wall of the air pipe 64, a constant pressure component is provided inside the clamping box 5, there are two clamping boxes 5, and the other clamping box 5 is fixedly connected to the top of the base 1.

[0033] See also Figure 1-Figure 2 The driving component includes a bearing 41 and a rotating rod 44. The bearing 41 is embedded in the inner wall of the moving box 4. The inner ring of the bearing 41 is fixedly sleeved with a threaded sleeve 42. The threaded sleeve 42 is threadedly connected to the threaded rod 3. The outer wall of the threaded sleeve 42 is fixedly sleeved with a first bevel gear 43. The rotating rod 44 is rotatably sleeved on the inner wall of the moving box 4. One end of the rotating rod 44 extending to the inside of the moving box 4 is fixedly connected to the second bevel gear 46. The second bevel gear 46 is meshed with the first bevel gear 43. The end of the rotating rod 44 extending to the outside of the moving box 4 is fixedly connected to a rotating disk 45. The outer wall of the rotating disk 45 A rotating handle 47 is fixedly connected to the wall, and a limiting channel 8 is provided on the inner wall of the slide 2. One end of the rotating rod 44 passes through the limiting channel 8 and extends to the outside of the base 1. The outer wall of the rotating rod 44 is slidably connected to the inner wall of the limiting channel 8. The rotating handle 47 is controlled to rotate, and then the second bevel gear 46 drives the first bevel gear 43 to rotate, thereby rotating the threaded sleeve 42. Since the threaded sleeve 42 is threadedly connected to the threaded rod 3, the threaded sleeve 42 will move on the threaded rod 3, and then the moving box 4 slides inside the slide 2, which can drive the clamping box 5 to move in the direction of another clamping box 5.

[0034] See also Figures 1-4 One end of the air pipe 64 passes through the clamping silicone pad 61 and the moving block 6 and extends to the inside of the clamping box 5. The outer wall of the moving plate 65 is slidably connected to the inner wall of the clamping box 5. The material of the clamping silicone pad 61 is soft, and the silicone airbag 63 can support the clamping silicone pad 61. When the moving block 6 is subjected to the force to move into the inside of the clamping box 5, it will drive the air pipe 64 to move, and the air pipe 64 will drive the moving plate 65 to move.

[0035] See also Figure 1-Figure 7The constant pressure component includes an air cylinder 641 fixedly connected to the inner wall of the clamping box 5, and the inner wall of the air cylinder 641 is fixedly sleeved with an air outlet pipe 644. The outer wall of the air outlet pipe 644 is provided with an electric air valve 645. One end of the air outlet pipe 644 passes through the clamping box 5 and extends to the outside of the clamping box 5. The air outlet pipe 644 is fixedly connected to the clamping box 5. An air pressure detection gauge 646 is provided on the outer wall of the air cylinder 641. An air pump 647 is fixedly connected to the outer wall of the air outlet pipe 644. A constant pressure pipe 648 is provided on one side of the air pump 647. One end of the constant pressure pipe 648 passes through the air cylinder 641 and extends to the interior of the air cylinder 641. The constant pressure pipe 648 is fixedly connected to the air cylinder 641. A sealing member 643 is fixedly connected to one side of the air cylinder 641. The sealing member 643 is a circular ring structure. The sealing member 643 is slidably sleeved with the air pipe 64. The inner wall of the air cylinder 641 is provided with a limited The limiting slide groove 642 and the outer wall of the air pipe 64 are fixedly installed with a limiting slider, and the limiting slider is slidably connected to the limiting slide groove 642. After clamping the sample, the clamping silicone pad 6 will drive the moving block 6 to move into the inside of the clamping box 5, and then the air pipe 64 will move into the inside of the air cylinder 641, and then the gas inside the air cylinder 641 will enter the silicone airbag 63 through the air pipe 64, and then the silicone airbag 63 will drive the clamping silicone pad 61 to have a clamping force on the sample. Since the material of the clamping silicone pad 61 is very soft, the clamping silicone pad 61 fits the sample surface more closely. When the air pressure inside 641 is larger at the same time, it means that the clamping force on the sample is too large, and then the air pressure detection meter 646 will detect it, and the electric air valve 645 will open to exhaust through the air outlet pipe 644, thereby maintaining a constant pressure inside the air cylinder 641 according to actual conditions.

[0036] Working principle: Step 1: There are two clamping boxes 5, and the other clamping box 5 is fixedly connected to the top of the base 1. The two clamping boxes 5 have the same structure. The sample is placed between the two clamping boxes 5, and the rotating handle 47 is operated to rotate, and then the second bevel gear 46 drives the first bevel gear 43 to rotate, and then the threaded sleeve 42 rotates. Since the threaded sleeve 42 is threadedly connected to the threaded rod 3, the threaded sleeve 42 will move on the threaded rod 3, and then the moving box 4 slides inside the slide 2, which can drive the clamping box 5 to move toward the other clamping box 5, thereby realizing the clamping silicone pad 61 to wrap the sample, thereby clamping the sample;

[0037] Step 2: After clamping the sample, the clamping silicone pad 6 will drive the moving block 6 to move into the clamping box 5, and then the air pipe 64 will move into the air cylinder 641. Then the gas inside the air cylinder 641 will enter the silicone airbag 63 through the air pipe 64, and then the silicone airbag 63 will drive the clamping silicone pad 61 to exert a clamping force on the sample. When the air pressure inside the air cylinder 641 is large, it means that the clamping force on the sample is too large, and then the air pressure detection meter 646 will detect it, and the electric air valve 645 will open, exhausting air through the air outlet pipe 644, thereby achieving constant pressure inside the air cylinder 641 according to actual conditions;

[0038] Step 3: Since the material of the clamping silicone pad 61 is very soft, the clamping silicone pad 61 fits the sample surface better. Since the inner side wall of the clamping silicone pad 61 is provided with a plurality of distribution grooves 7, a plurality of magnetic balls 71 are provided inside the distribution grooves 7. When the clamping silicone pad 61 clamps the sample, the dense magnetic balls 71 will fit on the surface of the sample. Since the magnetic balls 71 are magnetic and there are a large number of them, there will be a repulsive force between the multiple magnetic balls 71. The magnetic balls 71 that fit on the outer wall of the sample will tightly clamp the outer wall of the sample through the repulsive force of other magnetic balls 71. The side of the clamping silicone pad 61 that fits on the outer wall of the sample will disperse the force of the magnetic balls 71, thereby achieving a more uniform force when the sample is clamped.

[0039] Step 4: After the sample is clamped and fixed and the sample is observed, the handle 47 is rotated in the reverse direction to drive the clamping box 5 to reset through the same principle, and then the sample can be removed. At this time, the silicone airbag 63 is no longer squeezed, and the inside of the air cylinder 64 is no longer in a high-pressure state. The air pump 647 can inflate the inside of the air cylinder 64 through the constant pressure tube 648, so that the air pressure inside the air cylinder 64 returns to its original state, which will not affect the next clamping work.

[0040] Although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A TEM fixture, comprising a base (1), characterized in that: A slideway (2) is provided on the top of the base (1), a threaded rod (3) is fixedly connected to the interior of the slideway (2), a moving box (4) is slidably connected to the inner wall of the slideway (2), a driving component is provided inside the moving box (4), a clamping box (5) is fixedly connected to the top of the moving box (4), a moving block (6) is slidably connected to the inner wall of the clamping box (5), and a clamping component is provided on one side of the moving block (6); The clamping component comprises a clamping silicone pad (61) fixedly connected to one side of the moving block (6); a groove (62) is provided inside the clamping silicone pad (61); a distribution groove (7) is provided on the inner wall of the groove (62); a magnetic ball (71) is provided inside the distribution groove (7); a silicone airbag (63) is fixedly connected inside the groove (62); an air pipe (64) is fixedly connected to one side of the silicone airbag (63); a moving plate (65) is fixedly sleeved on the outer wall of the air pipe (64); and a constant pressure component is provided inside the clamping box (5).

2. A TEM fixture according to claim 1, characterized in that: The driving component comprises a bearing (41) and a rotating rod (44), wherein the bearing (41) is embedded in the inner wall of the moving box (4), the inner ring of the bearing (41) is fixedly sleeved with a threaded sleeve (42), the threaded sleeve (42) is threadedly connected to the threaded rod (3), the outer wall of the threaded sleeve (42) is fixedly sleeved with a first bevel gear (43), the rotating rod (44) is rotatably sleeved on the inner wall of the moving box (4), and one end of the rotating rod (44) extending to the inside of the moving box (4) is fixedly connected with a second bevel gear (46), and the second bevel gear (46) is meshedly connected with the first bevel gear (43).

3. A TEM fixture according to claim 2, characterized in that: One end of the rotating rod (44) extending to the outside of the moving box (4) is fixedly connected to a rotating disk (45), and the outer wall of the rotating disk (45) is fixedly connected to a rotating handle (47).

4. A TEM fixture according to claim 2, characterized in that: A limiting channel (8) is provided on the inner side wall of the slideway (2), one end of the rotating rod (44) passes through the limiting channel (8) and extends to the outside of the base (1), and the outer wall of the rotating rod (44) is slidably connected to the inner wall of the limiting channel (8).

5. The TEM fixture according to claim 1, wherein: One end of the air pipe (64) passes through the clamping silicone pad (61) and the moving block (6) and extends to the interior of the clamping box (5), and the outer wall of the moving plate (65) is slidably connected to the inner wall of the clamping box (5).

6. The TEM fixture according to claim 1, wherein: The constant pressure component comprises an air cylinder (641) fixedly connected to the inner wall of the clamping box (5); an air outlet pipe (644) is fixedly sleeved on the inner wall of the air cylinder (641); an electric air valve (645) is provided on the outer wall of the air outlet pipe (644); an air pressure detection gauge (646) is provided on the outer wall of the air cylinder (641); an air pump (647) is fixedly connected to the outer wall of the air outlet pipe (644); and a constant pressure pipe (648) is provided on one side of the air pump (647).

7. A TEM fixture according to claim 6, characterized in that: One end of the air outlet pipe (644) passes through the clamping box (5) and extends to the outside of the clamping box (5), and the air outlet pipe (644) is fixedly connected to the clamping box (5).

8. The TEM fixture according to claim 6, wherein: One end of the constant pressure tube (648) passes through the gas cylinder (641) and extends to the interior of the gas cylinder (641), and the constant pressure tube (648) is fixedly connected to the gas cylinder (641).

9. The TEM fixture according to claim 6, wherein: A sealing member (643) is fixedly connected to one side of the air cylinder (641), and the sealing member (643) is a circular ring structure. The sealing member (643) is slidably connected to the air pipe (64).

10. The TEM fixture according to claim 6, wherein: The inner wall of the air cylinder (641) is provided with a limiting sliding groove (642), and the outer wall of the air pipe (64) is fixedly mounted with a limiting slider, and the limiting slider is slidably connected to the limiting sliding groove (642).

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