CN107290875B - Sample placing jig and sample placing method - Google Patents
Sample placing jig and sample placing method Download PDFInfo
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- CN107290875B CN107290875B CN201710512332.1A CN201710512332A CN107290875B CN 107290875 B CN107290875 B CN 107290875B CN 201710512332 A CN201710512332 A CN 201710512332A CN 107290875 B CN107290875 B CN 107290875B
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- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000009434 installation Methods 0.000 claims abstract description 15
- 239000004973 liquid crystal related substance Substances 0.000 description 9
- 239000000758 substrate Substances 0.000 description 7
- 238000003825 pressing Methods 0.000 description 6
- 238000004458 analytical method Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000004642 Polyimide Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229920002120 photoresistant polymer Polymers 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/1306—Details
- G02F1/1309—Repairing; Testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
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- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
The invention provides a sample placing jig and a sample placing method. This tool is placed to sample includes the fixed bolster, can be on the fixed bolster sample frame that reciprocates, and clamping device, this clamping device accessible is to the control handle application pressure of its shell side makes two clamping parts of the anchor clamps in the shell part, remove two clamping parts behind the pressure and become the clamping state, can conveniently stably centre gripping crucible, when this tool is applied to and places the sample on thermogravimetric analyzer's balance sample pole, utilize clamping device centre gripping to hold the crucible that contains the sample earlier, and place clamping device in the through-hole of sample frame's installation, remove sample frame after that and make the crucible bottom surface and balance sample pole's upper surface contact, clamping device stops the centre gripping to the crucible this moment, can accurately place the crucible on thermogravimetric analyzer's balance sample pole steadily, the maneuverability of test has been promoted greatly, the loss of test has been reduced.
Description
Technical Field
The invention relates to the field of detection devices, in particular to a sample placing jig and a sample placing method.
Background
A Liquid Crystal Display (LCD) is one of the most widely used flat panel displays, and the LCD panel is a core component of the LCD. The liquid crystal panel is generally composed of a color filter Substrate (CF Substrate), a Thin Film transistor Array Substrate (TFT Array Substrate), and a liquid crystal Layer (liquid crystal Layer) disposed between the two substrates. Generally, the array substrate and the color filter substrate are respectively provided with a pixel electrode and a common electrode. When voltages are applied to the pixel electrodes and the common electrode, an electric field is generated in the liquid crystal layer, which determines the orientation of liquid crystal molecules, thereby adjusting the polarization of light incident to the liquid crystal layer, and displaying images on the liquid crystal panel.
Among flat panel displays, liquid crystal displays have gradually taken the lead in the display field due to their low power consumption, excellent picture quality, and high production yield.
In the routine analysis of TFT-LCD in the laboratory, a thermogravimetric analyzer (TGA) is often used to perform the analysis test of various materials such as photoresist and polyimide alignment film. As shown in fig. 1, in the loading process of the test, a crucible 2 'containing the sample is generally held by tweezers 1', and then the crucible 2 'is transferred and placed on a balance sample rod 3' of a thermogravimetric analyzer to perform an analytical test on the sample. However, since the crucible 2 'is a very small circular cup, it is difficult to control the transfer by the tweezers 1', and the crucible 2 'is very easy to fall, and further the balance sample rod 3' which is an important component of the thermogravimetric analyzer is very easy to damage, which affects the operability of the test and causes unnecessary loss.
Therefore, it is important to provide a new sample placing jig and a new sample placing method to solve the above problems.
Disclosure of Invention
The invention aims to provide a sample placing jig which can conveniently and stably clamp a crucible containing a sample, accurately and stably place the crucible on a balance sample rod of a thermogravimetric analyzer, improve the operability of the test and reduce the loss of the test.
Another object of the present invention is to provide a sample placing method, which can accurately and stably place a crucible containing a sample on a balance sample rod of a thermogravimetric analyzer, thereby improving the operability of the test and reducing the loss of the test.
In order to achieve the above object, the present invention provides a sample placing jig, including: the device comprises a vertical fixing support, a sample rack which is arranged on the fixing support and moves up and down, a fixing device which is arranged on the sample rack and used for fixing the sample rack on the fixing support, and a clamping device which is arranged on the sample rack;
the clamping device comprises a shell, a clamp, two opposite control handles and a positioning ring, wherein the clamp is arranged in the shell, the lower end of the clamp is exposed below the shell, the two opposite control handles penetrate through the side face of the shell and are connected with the clamp, and the positioning ring is arranged on the outer side face of the shell and is positioned below the control handles; the clamp comprises two body parts with upper ends connected, two crossed parts which are hinged with each other and the upper ends of which are respectively connected with the lower ends of the two body parts, two clamping parts which are respectively connected with the lower ends of the two crossed parts and are exposed below the shell, a spring arranged between the two body parts, and two connecting parts which are respectively arranged on the two body parts and are correspondingly connected with the two control handles;
the sample holder is provided with an installation through hole, the outer diameter of the positioning ring is larger than the aperture of the installation through hole, the clamping device is arranged in the installation through hole, and the two clamping parts are exposed below the sample holder.
The sample frame is sleeved on the fixing support, a threaded through hole is formed in one side of the sample frame corresponding to the fixing support, the fixing device is a bolt, the bolt is arranged in the threaded through hole, and the sample frame is fixed on the fixing support through screwing the bolt.
The shell is cylindrical, the mounting through hole is a cylindrical hole, and the outer diameter of the shell is the same as the aperture of the mounting through hole.
The section of each clamping part in the horizontal direction is a curved surface, and the circle centers of the sections of the two clamping parts in the horizontal direction are overlapped.
The invention also provides a sample placing method, which comprises the following steps:
step S1, providing a sample placing jig, a crucible containing the sample, and a thermogravimetric analyzer;
the sample placing jig includes: the device comprises a vertical fixing support, a sample rack which is arranged on the fixing support and moves up and down, a fixing device arranged on the sample rack and a clamping device; the clamping device comprises a shell, a clamp, two opposite control handles and a positioning ring, wherein the clamp is arranged in the shell, the lower end of the clamp is exposed below the shell, the two opposite control handles penetrate through the side face of the shell and are connected with the clamp, and the positioning ring is arranged on the outer side face of the shell and is positioned below the control handles; the clamp comprises two body parts with upper ends connected, two crossed parts which are hinged with each other and the upper ends of which are respectively connected with the lower ends of the two body parts, two clamping parts which are respectively connected with the lower ends of the two crossed parts and are exposed below the shell, a spring arranged between the two body parts, and two connecting parts which are respectively arranged on the two body parts and are correspondingly connected with the two control handles; the sample holder is provided with an installation through hole, and the outer diameter of the positioning ring is larger than the aperture of the installation through hole;
the thermogravimetric analyzer has a one-level sample rod;
step S2, clamping the crucible by using the clamping parts of the clamping device, and placing the clamping device with the crucible in the mounting through hole, wherein the two clamping parts and the crucible clamped by the clamping parts are exposed below the sample rack;
step S3, moving the sample frame on a fixed support to enable the bottom surface of the crucible to be in contact with the upper surface of the balance sample rod, and fixing the sample frame by using a fixing device;
and step S4, stopping clamping the crucible by the clamping device, and placing the crucible on the balance sample rod.
The specific process of clamping the crucible by the clamping part of the clamping device in the step S2 is as follows: applying pressure to two control handles of the clamping device to separate the two clamping parts, aligning the two clamping parts with the crucible, and removing the pressure applied to the two control handles to enable the two clamping parts to clamp the crucible;
the specific process of stopping clamping the crucible by the clamping device in the step S4 is as follows: and applying pressure to the two control handles of the clamping device to separate the two clamping parts from the crucible, and taking the clamping device out of the mounting through hole.
The sample rack is sleeved on the fixing support, a threaded through hole is formed in one side of the sample rack corresponding to the fixing support, the fixing device is a bolt which is arranged in the threaded through hole, and the sample rack is fixed on the fixing support by screwing the bolt in the step S3.
The shell is cylindrical, the mounting through hole is a cylindrical hole, and the outer diameter of the shell is the same as the aperture of the mounting through hole.
The crucible is cylindrical, the section of each clamping part in the horizontal direction is a curved surface, the circle centers of the sections of the two clamping parts in the horizontal direction are overlapped, and the curvature radius of the sections of the two clamping parts in the horizontal direction is the same as that of the side surface of the crucible.
The thermogravimetric analyzer is also provided with a shell, and the fixed support is fixed on the shell of the thermogravimetric analyzer.
The invention has the beneficial effects that: the invention provides a sample placing jig, which comprises a fixed bracket, a sample frame capable of moving up and down on the fixed bracket and a clamping device, the clamping device can separate the two clamping parts of the clamp in the shell by applying pressure to the control handle on the side surface of the shell, the two clamping parts become a clamping state after the pressure is removed, the crucible can be conveniently and stably clamped, when the jig is applied to placing a sample on a balance sample rod of a thermogravimetric analyzer, a crucible containing the sample is clamped by a clamping device, the clamping device is placed in an installation through hole of a sample rack, then, the sample frame is moved to enable the bottom surface of the crucible to be in contact with the upper surface of the balance sample rod, the clamping device stops clamping the crucible at the moment, the crucible can be accurately and stably placed on the balance sample rod of the thermogravimetric analyzer, the operability of the test is greatly improved, and the loss of the test is reduced. According to the sample placing method provided by the invention, the crucible containing the sample can be accurately and stably placed on the balance sample rod of the thermogravimetric analyzer, the test operability is improved, and the test loss is reduced.
Drawings
For a better understanding of the nature and technical aspects of the present invention, reference should be made to the following detailed description of the invention, taken in conjunction with the accompanying drawings, which are provided for purposes of illustration and description and are not intended to limit the invention.
In the drawings, there is shown in the drawings,
FIG. 1 is a schematic view showing a crucible containing a sample placed by tweezers in the prior art;
FIG. 2 is a schematic structural view of a sample placement jig according to the present invention;
FIG. 3 is a schematic structural view of a clamping device of the sample placing jig of the present invention;
FIG. 4 is a schematic structural view of a fixture of the sample placing jig of the present invention;
fig. 5 is a cross-sectional view of the clamping portion of the sample placing jig of the present invention in the horizontal direction;
FIG. 6 is a schematic view of the connection between the control handle and the clamp of the sample placing jig of the present invention;
FIG. 7 is a flow chart of a sample placement method of the present invention;
fig. 8 is a schematic diagram of steps S1 to S3 of the sample placement method of the present invention.
Detailed Description
To further illustrate the technical means and effects of the present invention, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.
Referring to fig. 2 to 6, the present invention provides a sample placing jig, including: the device comprises a vertical fixing support 1, a sample frame 2 which is arranged on the fixing support 1 and moves up and down, a fixing device 3 which is arranged on the sample frame 2 and used for fixing the sample frame 2 on the fixing support 1, and a clamping device 4 which is arranged on the sample frame 2;
referring to fig. 3, 4 and 6, the clamping device 4 includes a housing 41, a clamp 42 disposed in the housing 41 and having a lower end exposed below the housing 41, two opposite control handles 43 penetrating the side of the housing 41 and connected to the clamp 42, and a positioning ring 44 disposed on the outer side of the housing 41 and below the control handles 43; the clamp 42 comprises two body parts 421 with upper ends connected, two cross parts 422 hinged to each other and with upper ends connected to the lower ends of the two body parts 421, two clamping parts 423 connected to the lower ends of the two cross parts 422 and exposed below the housing 41, a spring 424 arranged between the two body parts 421, and two connecting parts 425 arranged on the two body parts 421 and correspondingly connected to the two control handles 43;
the sample holder 2 is provided with an installation through hole 21, the outer diameter of the positioning ring 44 is larger than the aperture of the installation through hole 21, the clamping device 4 is arranged in the installation through hole 21, and the two clamping parts 423 are exposed below the sample holder 2.
The sample placing jig is used for placing a sample on a thermogravimetric analyzer, and the specific working process of the sample placing jig is as follows: first, the crucible containing the sample is clamped by the clamping device 4, specifically, by applying pressure to the two control handles 43, the spring 424 between the two body parts 421 of the clamp 42 is compressed by force, the two body parts 421 move towards each other and the two clamping parts 423 are separated, at this time, the two clamping parts 423 are aligned with the crucible containing the sample, after the alignment, the pressure applied to the two control handles 43 is removed, the spring 424 returns to the original position, the two clamping parts 423 move towards each other while the two body parts 421 are separated, and the crucible containing the sample is clamped, because the present invention only needs to apply force to the clamping device 4 before clamping the crucible, and after the crucible is clamped by the clamping device 4, the force does not need to be continuously applied to the clamping device 4, compared with the prior art that the external force needs to be kept stable to provide enough clamping force during the process of clamping the crucible by using tweezers, the crucible can be conveniently and stably clamped; then, the holding device 4 holding the crucible is placed in the installation through hole 21 of the sample holder 2, due to the existence of the positioning ring 44, the holding device 4 can be conveniently and stably installed on the sample holder 2, at this time, the two holding parts 423 of the holding device 4 and the crucible held by the holding parts are exposed below the sample holder 2, and the crucible is conveniently placed on a balance sample rod of the thermogravimetric analyzer in the following process; afterwards, adjust the position of sample frame 2 on fixed bolster 1, the bottom surface of the crucible that makes clamping part 423 centre gripping contacts with the upper surface of the balance sample pole of thermogravimetric analyzer, perhaps according to actual conditions, make the bottom surface of crucible be a little higher than the upper surface of balance sample pole, then utilize fixing device 3 to fix sample frame 2 on fixed bolster 1, exert pressure to two control handle 43 once more this moment, two clamping part 423 can separate once more, also be with the crucible separation, upwards take out clamping device 4 from installation through-hole 21 simultaneously, thereby the crucible can be accurately placed on the balance sample pole of thermogravimetric analyzer steadily, the operability of test has been promoted greatly, the loss of test has been reduced.
Specifically, the sample holder 2 is sleeved on the fixing support 1, a threaded through hole 22 is formed in one side of the sample holder 2 corresponding to the fixing support 1, the fixing device 3 is a bolt which is arranged in the threaded through hole 22, and the sample holder 2 is fixed on the fixing support 1 by screwing the bolt.
Preferably, the housing 41 is cylindrical, the mounting through hole 21 is cylindrical, and the outer diameter of the housing 41 is the same as the diameter of the mounting through hole 21, so that the clamping device 4 is more stably mounted in the mounting through hole 21, and the shaking of the crucible during operation is reduced.
Preferably, since the conventional crucible for containing the sample is cylindrical, referring to fig. 5, each of the clamping portions 423 of the present invention has a curved cross section in the horizontal direction, and the centers of the cross sections of the two clamping portions 423 in the horizontal direction coincide with each other, and the radius of curvature of the cross section of the two clamping portions 423 in the horizontal direction is designed according to the radius of curvature of the side surface of the crucible for containing the sample.
Referring to fig. 7 in combination with fig. 2 to 6, based on the same inventive concept, the present invention further provides a sample placing method, including the following steps:
step S1, please refer to fig. 8, providing a sample placing jig, a crucible 6 containing the sample, and a thermogravimetric analyzer;
referring to fig. 2 to 6, the sample placing jig includes: the device comprises a vertical fixing support 1, a sample rack 2 which is arranged on the fixing support 1 and moves up and down, a fixing device 3 arranged on the sample rack 2, and a clamping device 4; the clamping device 4 comprises a shell 41, a clamp 42 which is arranged in the shell 41 and the lower end of which is exposed below the shell 41, two opposite control handles 43 which penetrate through the side surface of the shell 41 and are connected with the clamp 42, and a positioning ring 44 which is arranged on the outer side surface of the shell 41 and is positioned below the control handles 43; the clamp 42 comprises two body parts 421 with upper ends connected, two cross parts 422 hinged to each other and with upper ends connected to the lower ends of the two body parts 421, two clamping parts 423 connected to the lower ends of the two cross parts 422 and exposed below the housing 41, a spring 424 arranged between the two body parts 421, and two connecting parts 425 arranged on the two body parts 421 and correspondingly connected to the two control handles 43; the sample holder 2 is provided with a mounting through hole 21, and the outer diameter of the positioning ring 44 is larger than the aperture of the mounting through hole 21;
the thermogravimetric analyzer has a one-day flat sample rod 7.
Specifically, the sample holder 2 is sleeved on the fixing support 1, a threaded through hole 22 is formed in one side of the sample holder 2 corresponding to the fixing support 1, and the fixing device 3 is a bolt which is arranged in the threaded through hole 22.
Preferably, the housing 41 is cylindrical, the mounting through hole 21 is a cylindrical hole, and the outer diameter of the housing 41 is the same as the diameter of the mounting through hole 21.
Preferably, the crucible 6 is cylindrical, each clamping portion 423 has a curved cross section in the horizontal direction, the centers of the two clamping portions 423 in the horizontal cross section are overlapped, and the radius of curvature of the two clamping portions 423 in the horizontal cross section is the same as the radius of curvature of the side surface of the crucible 6.
Specifically, the thermogravimetric analyzer further comprises a shell 5, and the fixing support 1 is fixed on the shell 5 of the thermogravimetric analyzer so as to improve the stability of the sample placing jig.
Step S2, please refer to fig. 8, the crucible 6 is clamped by the clamping portion 423 of the clamping device 4, and the clamping device 4 with the crucible 6 clamped therein is placed in the installation through hole 21, and both the two clamping portions 423 and the crucible 6 clamped therein are exposed below the sample holder 2.
Specifically, the specific process of clamping the crucible 6 by the clamping portion 423 of the clamping device 4 in the step S2 is as follows: when the pressure applied to the two control handles 43 of the holding device 4 is applied to compress the spring 424, the two body portions 421 are moved toward each other while the two holding portions 423 are separated, and the two holding portions 423 are aligned with the crucible 6, and when the pressure applied to the two control handles 43 is removed, the spring 424 returns to move the two holding portions 423 toward each other while the two body portions 421 are separated, and the crucible 6 is held.
Step S3, referring to fig. 8, the sample holder 2 is moved on the fixing support 1, the bottom surface of the crucible 6 is brought into contact with the upper surface of the balance sample rod 7, and the sample holder 2 is fixed by the fixing device 3.
Specifically, the step S3 may also select and adjust the position of the sample holder 2 according to actual conditions so that the bottom surface of the crucible 6 is slightly higher than the upper surface of the balance sample rod 7, thereby improving operability.
Specifically, when the fixing means 3 is a bolt, the step S3 fixes the sample holder 2 on the fixing bracket 1 by tightening the bolt.
Step S4, the holding device 4 stops holding the crucible 6, and places the crucible 6 on the balance sample rod 7.
Specifically, the specific process of the step S4 in which the holding device 4 stops holding the crucible 6 is as follows: the two holding portions 423 are separated from the crucible 6 by applying pressure to the two control handles 43 of the holding device 4, and the holding device 4 is taken out from the mounting through hole 21.
It should be noted that, in the sample placement method of the present invention, only the acting force needs to be applied to the holding device 4 before the crucible 6 is held, and after the crucible 6 is already held by the holding device 4, the acting force does not need to be continuously applied to the holding device 4, compared with the prior art in which a stable external force needs to be maintained to provide a sufficient holding force in the process of holding the crucible by using tweezers, the present invention can conveniently and stably hold the crucible 6, and the holding device 4 holding the crucible 6 is installed on the sample holder 2, and the bottom surface of the crucible 6 is brought into contact with the upper surface of the sample rod 7 or is slightly higher than the upper surface thereof by moving the sample holder 2, and then the holding device 4 and the crucible 6 are separated, so that the crucible 6 can be accurately and stably placed on the sample rod 7 of the thermogravimetric analyzer, thereby greatly improving the operability of the test and reducing the loss of the.
In summary, the sample placing jig of the present invention comprises a fixing bracket, a sample rack capable of moving up and down on the fixing bracket, and a clamping device, the clamping device can separate the two clamping parts of the clamp in the shell by applying pressure to the control handle on the side surface of the shell, the two clamping parts become a clamping state after the pressure is removed, the crucible can be conveniently and stably clamped, when the jig is applied to placing a sample on a balance sample rod of a thermogravimetric analyzer, a crucible containing the sample is clamped by a clamping device, the clamping device is placed in an installation through hole of a sample rack, then, the sample frame is moved to enable the bottom surface of the crucible to be in contact with the upper surface of the balance sample rod, the clamping device stops clamping the crucible at the moment, the crucible can be accurately and stably placed on the balance sample rod of the thermogravimetric analyzer, the operability of the test is greatly improved, and the loss of the test is reduced. The sample placing method can accurately and stably place the crucible containing the sample on the balance sample rod of the thermogravimetric analyzer, improves the test operability and reduces the test loss.
As described above, it will be apparent to those skilled in the art that various other changes and modifications can be made based on the technical solution and the technical idea of the present invention, and all such changes and modifications should fall within the protective scope of the appended claims.
Claims (9)
1. A sample placement jig, comprising: the device comprises a vertical fixing support (1), a sample rack (2) which is arranged on the fixing support (1) and moves up and down, a fixing device (3) which is arranged on the sample rack (2) and used for fixing the sample rack (2) on the fixing support (1), and a clamping device (4) which is arranged on the sample rack (2);
the clamping device (4) comprises a shell (41), a clamp (42) which is arranged in the shell (41) and the lower end of which is exposed below the shell (41), two opposite control handles (43) which penetrate through the side surface of the shell (41) and are connected with the clamp (42), and a positioning ring (44) which is arranged on the outer side surface of the shell (41) and is positioned below the control handles (43); the clamp (42) comprises two body parts (421) with the upper ends connected, two cross parts (422) which are hinged with each other and the upper ends of which are respectively connected with the lower ends of the two body parts (421), two clamping parts (423) which are respectively connected with the lower ends of the two cross parts (422) and are exposed below the shell (41), a spring (424) arranged between the two body parts (421), and two connecting parts (425) which are respectively arranged on the two body parts (421) and are correspondingly connected with the two control handles (43);
the sample holder is characterized in that a mounting through hole (21) is formed in the sample holder (2), the outer diameter of the positioning ring (44) is larger than the aperture of the mounting through hole (21), the clamping device (4) is arranged in the mounting through hole (21), and the two clamping parts (423) are exposed below the sample holder (2).
2. The sample holder according to claim 1, wherein the sample holder (2) is sleeved on the fixing support (1), a threaded through hole (22) is formed on one side of the sample holder (2) corresponding to the fixing support (1), the fixing device (3) is a bolt which is disposed in the threaded through hole (22), and the sample holder (2) is fixed on the fixing support (1) by tightening the bolt.
3. The sample placement jig according to claim 1, characterized in that the housing (41) is cylindrical, the mounting through hole (21) is a cylindrical hole, and the outer diameter of the housing (41) is the same as the diameter of the mounting through hole (21).
4. The sample placing jig according to claim 1, wherein each of the holding portions (423) has a curved cross section in the horizontal direction, and the centers of the two holding portions (423) are coincident with each other in the horizontal cross section.
5. A method of sample placement, comprising the steps of:
step S1, providing a sample placing jig, a crucible (6) containing a sample, and a thermogravimetric analyzer;
the sample placing jig includes: the device comprises a vertical fixing support (1), a sample rack (2) which is arranged on the fixing support (1) and moves up and down, a fixing device (3) arranged on the sample rack (2), and a clamping device (4); the clamping device (4) comprises a shell (41), a clamp (42) which is arranged in the shell (41) and the lower end of which is exposed below the shell (41), two opposite control handles (43) which penetrate through the side surface of the shell (41) and are connected with the clamp (42), and a positioning ring (44) which is arranged on the outer side surface of the shell (41) and is positioned below the control handles (43); the clamp (42) comprises two body parts (421) with the upper ends connected, two cross parts (422) which are hinged with each other and the upper ends of which are respectively connected with the lower ends of the two body parts (421), two clamping parts (423) which are respectively connected with the lower ends of the two cross parts (422) and are exposed below the shell (41), a spring (424) arranged between the two body parts (421), and two connecting parts (425) which are respectively arranged on the two body parts (421) and are correspondingly connected with the two control handles (43); the sample holder (2) is provided with a mounting through hole (21), and the outer diameter of the positioning ring (44) is larger than the aperture of the mounting through hole (21);
the thermogravimetric analyzer has a one-level sample rod (7);
step S2, clamping the crucible (6) by utilizing the clamping part (423) of the clamping device (4), and placing the clamping device (4) clamped with the crucible (6) in the installation through hole (21), wherein the two clamping parts (423) and the crucible (6) clamped by the clamping parts are exposed below the sample rack (2);
step S3, moving the sample rack (2) on the fixed support (1) to enable the bottom surface of the crucible (6) to be in contact with the upper surface of the balance sample rod (7), and fixing the sample rack (2) by using the fixing device (3);
and step S4, stopping clamping the crucible (6) by the clamping device (4), and placing the crucible (6) on the balance sample rod (7).
6. The sample placement method according to claim 5, wherein the sample holder (2) is sleeved on the fixing support (1), and one side of the sample holder (2) is provided with a threaded through hole (22) corresponding to the fixing support (1), and the fixing device (3) is a bolt which is arranged in the threaded through hole (22); in step S3, the sample holder (2) is fixed to the fixing bracket (1) by tightening the bolt.
7. The sample placement method according to claim 5, characterized in that the housing (41) is cylindrical, the mounting through-hole (21) is a cylindrical hole, and the outer diameter of the housing (41) is the same as the diameter of the mounting through-hole (21).
8. The sample placement method according to claim 5, wherein the crucible (6) is cylindrical, each of the holding portions (423) has a curved surface in a horizontal cross section, centers of the horizontal cross sections of the two holding portions (423) coincide with each other, and a radius of curvature of the horizontal cross section of each of the two holding portions (423) is the same as a radius of curvature of a side surface of the crucible (6).
9. The sample placement method according to claim 5, characterized in that the thermogravimetric analyzer further has an outer shell (5), the fixed support (1) being fixed to the outer shell (5) of the thermogravimetric analyzer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710512332.1A CN107290875B (en) | 2017-06-28 | 2017-06-28 | Sample placing jig and sample placing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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Address after: 9-2 Tangming Avenue, Guangming New District, Shenzhen City, Guangdong Province Patentee after: TCL China Star Optoelectronics Technology Co.,Ltd. Address before: 9-2 Tangming Avenue, Guangming New District, Shenzhen City, Guangdong Province Patentee before: Shenzhen China Star Optoelectronics Technology Co.,Ltd. |