Crucible pressing device

Abstract

The utility model relates to the technical field of DSC test sample preparation, in particular to a crucible pressing device which comprises a sample preparation box, a supporting block is arranged in the middle of the interior of the sample preparation box, and a plurality of crucible cap elastic bases are evenly arranged on one side of the supporting block in the sample preparation box. A plurality of crucible elastic bases are uniformly arranged on the other side of the supporting block in the sample preparation box, a crucible cap pressing plate is arranged above the crucible elastic bases, a crucible pressing plate is arranged above the crucible elastic bases, guide rails are arranged on the two sides of the sample preparation box, the guide rails are higher than the supporting block, and the crucible pressing plate is arranged above the crucible elastic bases. A pull rod assembly moving along the guide rail is arranged in the guide rail, and a rubber roller moving along with the pull rod assembly is arranged in the pull rod assembly. According to the utility model, a plurality of crucibles and crucible caps can be processed at the same time, batch penetration of the crucible caps and pressing of the crucibles are realized, and the preparation efficiency of DSC test samples is remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to DSC test sample preparation technical field, specifically relates to a crucible pressing device. BACKGROUND

[0002] Differential Scanning Calorimetry (DSC) is a kind of thermal analysis method, used to measure the relationship between the power difference input to sample and reference and temperature under the program control temperature. This technology is widely used in material science, chemistry, pharmacy and other fields, and the method generates DSC curve by recording the rate of sample heat absorption or heat release (i.e. heat flow rate), which can provide various thermodynamic and kinetic parameters, such as specific heat capacity, reaction heat, transition heat, phase diagram, reaction rate, crystallization rate, polymer crystallinity and sample purity, etc.

[0003] Traditional sample preparation process is complicated and inefficient, and manual piercing of crucible cap is required, then the crucible, sample and crucible cap are placed one by one, and then pressed. This operation method not only consumes time and effort, but also has many uncontrollable factors. For example, the hole position and size of the crucible cap piercing hole are often difficult to keep consistent, which will cause the heat flow data of the sample to fluctuate in DSC test, thereby affecting the accuracy of the test results. In addition, the pressing degree of the crucible and the crucible cap also has differences, and such differences will also adversely affect the test results.

[0004] At the same time, due to the small volume of DSC test sample, precise balance, tweezers or dropper and other fine tools are usually used for sampling. When batch sampling is prepared, researchers need to frequently switch between sampling, crucible pressing and other work links, which not only greatly reduces the sampling efficiency, but also increases the risk of operation errors.

[0005] Patent CN217277211U discloses an automatic rebound type small crucible piercing hole pressing device, which can ensure the size consistency of the crucible cap piercing hole to a certain extent, thereby reducing the test data fluctuation caused by hole difference, however, it cannot solve the problem of inconsistent pressing degree of the crucible when repeated sampling, and cannot effectively improve the overall efficiency of DSC sampling. UTILITY MODEL CONTENTS

[0006] To solve the problems existing in the prior art, the utility model provides a crucible pressing device.

[0007] In order to achieve the above object, the technical scheme of the utility model is: a crucible pressing device, including sample preparation box, the inside middle of sample preparation box is provided with support block, the inside of sample preparation box is provided with a plurality of crucible cap elastic base evenly on the one side of support block, the inside of sample preparation box is provided with a plurality of crucible elastic base evenly on the other side of support block, the top of crucible cap elastic base is provided with crucible cap pressing plate, the top of crucible elastic base is provided with crucible pressing plate, the both sides of sample preparation box are provided with guide rail, the height of guide rail is higher than support block, the guide rail is provided with pull rod assembly moving along guide rail, the pull rod assembly is provided with rubber roller moving along with pull rod assembly.

[0008] Further, the sample preparation box includes a sample preparation box base, a plurality of crucible elastic base mounting holes and a plurality of crucible cap elastic base mounting holes are respectively arranged above the sample preparation box base, the crucible elastic base mounting holes are provided with the crucible elastic bases, and the crucible cap elastic base mounting holes are provided with the crucible cap elastic bases.

[0009] Further, the sample preparation box base rear is provided with a baffle, and the height of the baffle is higher than that of the guide rail.

[0010] Further, the crucible cap elastic base includes a base I matched with the crucible cap elastic base mounting hole, a spring I is arranged on the base I, a perforating needle is arranged at the inner center of the spring I, the other end of the spring I is provided with a crucible cap seating, the crucible cap seating is provided with a crucible cap through hole, and the height of the perforating needle is less than that of the spring I.

[0011] Further, the bottom of the crucible cap pressing plate is provided with a crucible cap pressing table matched with the shape of the crucible cap seating, and the bottom center of the crucible cap pressing table is provided with a pressing table groove corresponding to the crucible cap through hole.

[0012] Further, one side of the top of the crucible cap pressing plate is provided with a crucible cap pressing plate inclined part.

[0013] Further, the crucible elastic base includes a base II matched with the crucible elastic base mounting hole, a spring II is arranged on the base II, and the other end of the spring II is provided with a crucible seating.

[0014] Further, the bottom of the crucible pressing plate is provided with a crucible pressing table matched with the shape of the crucible seating.

[0015] Further, one side of the top of the crucible pressing plate is provided with a crucible pressing plate inclined part.

[0016] Furthermore, the pull rod assembly includes a left slider and a right slider respectively disposed in the left and right guide rails, a pull rod is disposed between the left slider and the right slider, and a round rod is disposed through the rubber roller, with the two ends of the round rod being rotatably disposed in the left slider and the right slider respectively.

[0017] The beneficial effects achieved by this utility model are as follows:

[0018] 1. This utility model can process multiple crucibles and crucible caps simultaneously, realizing batch crucible cap piercing and crucible pressing, which significantly improves the preparation efficiency of DSC test samples.

[0019] 2. The position and size of the piercing hole in the crucible cap of this utility model are controlled by the spring and piercing needle inside the elastic base of the crucible cap, which ensures the consistency and accuracy of the piercing hole and reduces the fluctuation of test data caused by the difference in hole size. When the crucible is pressed, the rubber roller applies uniform pressure to the crucible plate, so that the pressing strength of each crucible is consistent, avoiding the deviation of DSC test data caused by the difference in pressing size.

[0020] 3. This utility model combines multiple sampling and pressing processes into a centralized process, reducing the number of times researchers need to switch between different processes, thereby reducing the risk of operational errors and improving the reliability and accuracy of DSC test data, providing strong support for research in materials science, chemistry, pharmacy and other fields.

[0021] 4. The present invention, through the design of the crucible cap elastic base and the crucible elastic base, enables the crucible cap and the crucible to be stably placed inside the crucible cap elastic base and the crucible elastic base, and is not easy to slip off or move. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the disassembled structure of this utility model;

[0023] Figure 2 This is a top view of the disassembled structure of this utility model;

[0024] Figure 3 This is a bottom view of the disassembled structure of this utility model;

[0025] Figure 4 This is a right view of the disassembled structure of this utility model;

[0026] Figure 5 This is a schematic diagram of the overall structure of the elastic base of the crucible cap;

[0027] Figure 6 This is a schematic diagram of the overall structure of the crucible's elastic base;

[0028] Figure 7 This is a diagram showing the usage state of this utility model.

[0029] The markings in the diagram are as follows: 1. Round rod; 2. Pull rod assembly; 3. Rubber roller; 4. Elastic base of crucible cap; 5. Elastic base of crucible; 6. Crucible pressure plate; 7. Crucible cap pressure plate; 8. Sample preparation box; 21. Left slider; 22. Right slider; 23. Pull rod; 41. Base one; 42. Spring one; 43. Crucible cap mounting seat; 44. Perforating needle; 45. Through hole of crucible cap; 51. Base two; 52. Spring two; 53. Crucible mounting seat; 61. Crucible pressure platform; 62. Inclined part of crucible pressure plate; 71. Crucible cap pressure platform; 72. Pressure platform groove; 73. Inclined part of crucible cap pressure plate; 81. Mounting hole of crucible elastic base; 82. Mounting hole of crucible elastic base; 83. Sample preparation box base; 84. Support block; 85. Baffle; 86. Guide rail. Detailed Implementation

[0030] To better understand the purpose, structure, and function of this utility model, the following description, in conjunction with the accompanying drawings, provides a more detailed account of a crucible pressing device according to this utility model.

[0031] like Figures 1 to 7 As shown, a crucible pressing device includes a sample preparation box 8. A support block 84 is disposed in the middle of the sample preparation box 8, dividing the sample preparation box 8 into two equal internal spaces. Several crucible cap elastic bases 4 are disposed in the internal space on one side of the support block 84, and the crucible cap elastic bases 4 are evenly disposed in the sample preparation box 8. Several crucible elastic bases 5 are disposed in the internal space on the other side of the support block 84, and the crucible elastic bases 5 are evenly disposed in the sample preparation box 8. A crucible cap pressure plate 7 is disposed above the crucible cap elastic bases 4, and the width of the crucible cap pressure plate 7 matches the width of the space where the crucible cap elastic bases 4 are located. A crucible pressure plate 6 is disposed above the crucible elastic bases 5, and the width of the crucible pressure plate 6 matches the width of the space where the crucible elastic bases 5 are located. The sample preparation box 8 is equipped with guide rails 86 on the left and right sides. The horizontal height of the guide rails 86 is higher than the horizontal height of the support block 84. A pull rod assembly 2 that can move along the guide rails 86 is installed inside the guide rails 86. A rubber roller 3 that moves together with the pull rod assembly 2 is installed inside the pull rod assembly 2.

[0032] The sample preparation box 8 comprises a sample preparation box base 83 which is cuboid in shape. A plurality of crucible elastic base mounting holes 81 are arranged on one side of a support block 84 above the sample preparation box base 83. A crucible elastic base 5 is arranged in each of the crucible elastic base mounting holes 81. The size of the crucible elastic base 5 matches the size of the crucible elastic base mounting hole 81. A plurality of crucible cap elastic base mounting holes 82 are arranged on the other side of the support block 84 above the sample preparation box base 83. A crucible cap elastic base 4 is arranged in each of the crucible cap elastic base mounting holes 82. The size of the crucible cap elastic base 4 matches the size of the crucible cap elastic base mounting hole 82. A baffle 85 is arranged at the rear of the sample preparation box base 83. The baffle 85 is arranged perpendicularly to the support block 84. The horizontal height of the baffle 85 is higher than the horizontal height of the guide rail 86. This prevents the pull rod assembly 2 from moving out of the guide rail 86 due to inertia when moving in the guide rail 86, and ensures stable movement of the pull rod assembly 2 in the guide rail 86.

[0033] The pull rod assembly 2 comprises a left sliding block 21 arranged in the left guide rail 86 and a right sliding block 22 arranged in the right guide rail 86. A pull rod 23 is arranged between the left sliding block 21 and the right sliding block 22 to connect the left sliding block 21 and the right sliding block 22. The pull rod 23 is in the shape of a "N" character. A rubber roller 3 is rotatably arranged between the left sliding block 21 and the right sliding block 22. A circular rod 1 is arranged through the center of the side wall of the rubber roller 3. The two ends of the circular rod 1 are rotatably arranged in the left sliding block 21 and the right sliding block 22, respectively.

[0034] The crucible cap elastic base 4 comprises a base one 41 which is in the shape matching the crucible cap elastic base mounting hole 82. A spring one 42 is arranged on the base one 41. A perforating needle 44 is arranged in the middle of the spring one 42. The perforating needle 44 is arranged on the base one 41. The vertical height of the perforating needle 44 is less than the vertical height of the spring one 42. A crucible cap seating 43 is arranged at the other end of the spring one 42. The top of the crucible cap seating 43 is in the shape matching the DSC crucible cap. A ring-shaped thin wall is arranged at the outer edge of the top of the crucible cap seating 43. The inner diameter of the ring-shaped thin wall is consistent with the outer diameter of the outside of the crucible cap. A crucible cap through hole 45 is arranged at the middle of the crucible cap seating 43. The position of the crucible cap through hole 45 corresponds to the position of the perforating needle 44. When the spring one 42 is compressed, the perforating needle 44 penetrates through the crucible cap through hole 45 in the crucible cap seating 43 and pierces the crucible cap in the crucible cap seating 43.

[0035] A crucible cap pressing plate 7 is arranged above the crucible cap elastic base 4, the crucible cap pressing plate 7 is a rectangular plate with a certain thickness, the width of the crucible cap pressing plate 7 matches the space width where the crucible cap elastic base 4 is arranged, the bottom of the crucible cap pressing plate 7 is provided with crucible cap pressing tables 71 matching the number and shape of the crucible cap setting seats 43, the crucible cap pressing tables 71 are cylindrical structures, the shape of the crucible cap pressing tables 71 matches the shape of the DSC crucible cap, the bottom of the crucible cap pressing table 71 is provided with a pressing table groove 72 at the middle position, the pressing table groove 72 corresponds to the position of the crucible cap through hole 45 on the crucible cap setting seat 43, and the pressing table groove 72 can accommodate the perforating needle 44 passing through the crucible cap through hole 45.

[0036] When the crucible cap pressing plate 7 is pressed on the crucible cap elastic base 4, the horizontal height of the top of the crucible cap pressing plate 7 is slightly higher than the horizontal height of the supporting block 84, the top of the crucible cap pressing plate 7 is provided with a crucible cap pressing plate inclined part 73 away from the side of the baffle 85 of the sample preparation box 8, the crucible cap pressing plate inclined part 73 has a certain inclination, which facilitates the pulling rod 23 to pull the rubber roller 3, so that the left sliding block 21 and the right sliding block 22 at both ends of the rubber roller 3 enter the guide rail 86, thereby enabling the rubber roller 3 to exert uniform pressure on the rubber cap pressing plate.

[0037] The crucible elastic base 5 comprises a base two 51, the shape of the base two 51 matches the shape of the crucible elastic base mounting hole 81, the base two 51 is provided with a spring two 52, the other end of the spring two 52 is provided with a crucible setting seat 53, the top of the crucible setting seat 53 matches the shape of the DSC crucible, the top of the crucible setting seat 53 is provided with a ring-shaped thin wall at the outer edge, and the inner diameter of the circular thin wall is consistent with the outer diameter of the crucible. The vertical height of the crucible elastic base 5 when the spring two 52 is in a free state is consistent with the vertical height of the crucible cap elastic base 4 when the spring one 42 is in a free state.

[0038] A crucible pressing plate 6 is arranged above the crucible elastic base 5, the crucible pressing plate 6 is a rectangular plate with a certain thickness, the width of the crucible pressing plate 6 matches the space width where the crucible elastic base 5 is arranged, and the bottom of the crucible pressing plate 6 is provided with crucible pressing tables 61 matching the number and shape of the crucible setting seats 53, the crucible pressing tables 61 are cylindrical structures, and the shape of the crucible pressing tables 61 matches the shape of the DSC crucible.

[0039] When the crucible pressing plate 6 is pressed on the crucible elastic base 5, the horizontal height of the top of the crucible pressing plate 6 is slightly higher than the horizontal height of the supporting block 84, the top of the crucible pressing plate 6 is provided with a crucible pressing plate inclined part 62 away from the side of the baffle 85 of the sample preparation box 8, the crucible pressing plate inclined part 62 has a certain inclination, which facilitates the pulling rod 23 to pull the rubber roller 3, so that the left sliding block 21 and the right sliding block 22 at both ends of the rubber roller 3 enter the guide rail 86, thereby enabling the rubber roller 3 to exert uniform pressure on the rubber pressing plate.

[0040] The utility model uses the following steps when using:

[0041] 1) the required number of crucible cap elastic base 4 is placed to the corresponding crucible cap elastic base mounting hole 82 in the test;

[0042] 2) the crucible cap is put into the crucible cap seat 43, and the crucible cap is attached to the crucible cap seat 43;

[0043] 3) the crucible cap pressing plate 7 is pressed on the top of the crucible cap base, the crucible cap pressing plate inclined part 73 in the crucible cap pressing plate 7 is away from the baffle 85 of the sample preparation box 8, and the crucible cap pressing platform 71 below the crucible cap pressing plate 7 is aligned with the crucible cap in the crucible cap seat 43;

[0044] 4) the pull rod 23 is pulled, the left slider 21 and the right slider 22 at both ends of the pull rod 23 are entered into the corresponding guide rail 86, the rubber roller 3 is moved to the top of the crucible cap pressing plate 7 through the crucible cap pressing plate inclined part 73, the rubber roller 3 is moved above the crucible cap pressing plate 7, the crucible cap pressing plate 7 is moved downward, the compression spring one 42 is compressed, the perforating needle 44 in the middle of the spring one 42 is passed through the through hole 45 of the crucible cap, the crucible cap is pierced, and the perforating needle 44 is entered into the pressing platform groove 72 at the bottom of the crucible cap pressing plate 7, so that the perforation work of the crucible cap is completed;

[0045] 5) the required number of crucible elastic base 5 is placed to the corresponding crucible elastic base mounting hole 81 in the test, and the crucible is put into the crucible seat 53 above the crucible elastic base 5, so that the crucible is attached to the crucible seat 53;

[0046] 6) the sample is added into the crucible, the perforated crucible cap or the unperforated crucible cap is covered, and then the crucible pressing plate 6 is arranged above the crucible elastic base 5, the crucible pressing plate inclined part 62 in the crucible pressing plate 6 is away from the baffle 85 of the sample preparation box 8, and the crucible pressing platform 61 below the crucible pressing plate 6 is aligned with the crucible cap in the crucible seat 53;

[0047] 7) the pull rod 23 is pulled, the left slider 21 and the right slider 22 at both ends of the pull rod 23 are entered into the corresponding guide rail 86, the rubber roller 3 is moved to the top of the crucible pressing plate 6 through the crucible pressing plate inclined part 62, the rubber roller 3 is moved above the crucible pressing plate 6, the crucible pressing plate 6 is moved downward, the compression spring two 52 is compressed by the same distance, the spring two 52 is elastically deformed by the same distance, under the action of the elastic force of the spring two 52, the force of the crucible and the crucible cover is kept consistent, and the crucible pressing of the batch DSC sample is completed.

[0048] It can be understood that the utility model is described through some embodiments, and the person skilled in the art knows that various changes or equivalent replacements can be made to these features and embodiments without departing from the spirit and scope of the utility model. In addition, under the guidance of the utility model, these features and embodiments can be modified to adapt to specific conditions and materials without departing from the spirit and scope of the utility model. Therefore, the utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the application belong to the scope protected by the utility model.

Claims

1. A crucible pressing device, characterized in that: The sample preparation box (8) includes a support block (84) in the middle of its interior. Several crucible cap elastic bases (4) are evenly arranged on one side of the support block (84) inside the sample preparation box (8). Several crucible elastic bases (5) are evenly arranged on the other side of the support block (84) inside the sample preparation box (8). A crucible cap pressure plate (7) is arranged above the crucible cap elastic base (4). A crucible pressure plate (6) is arranged above the crucible elastic base (5). Guide rails (86) are arranged on both sides of the sample preparation box (8). The height of the guide rails (86) is higher than that of the support block (84). A pull rod assembly (2) that moves along the guide rail (86) is arranged inside the guide rail (86). A rubber roller (3) that moves together with the pull rod assembly (2) is arranged inside the pull rod assembly (2).

2. The crucible pressing device according to claim 1, characterized in that: The sample preparation box (8) includes a sample preparation box base (83). Several crucible elastic base mounting holes (81) and several crucible cap elastic base mounting holes (82) are respectively provided on the sample preparation box base (83). The crucible elastic base (5) is provided in the crucible elastic base mounting hole (81), and the crucible cap elastic base (4) is provided in the crucible cap elastic base mounting hole (82).

3. The crucible pressing device according to claim 2, characterized in that: A baffle (85) is provided behind the sample preparation box base (83), and the height of the baffle (85) is higher than that of the guide rail (86).

4. The crucible pressing device according to claim 2, characterized in that: The crucible cap elastic base (4) includes a base (41) that matches the crucible cap elastic base mounting hole (82). A spring (42) is provided on the base (41). A perforating needle (44) is provided at the center of the spring (42). A crucible cap mounting seat (43) is provided at the other end of the spring (42). A crucible cap through hole (45) is provided in the crucible cap mounting seat (43). The height of the perforating needle (44) is less than the height of the spring (42).

5. The crucible pressing device according to claim 4, characterized in that: The bottom of the crucible cap pressure plate (7) is provided with a crucible cap pressure platform (71) that matches the shape of the crucible cap mounting base (43). At the center of the bottom of the crucible cap pressure platform (71) is a pressure platform groove (72) that corresponds to the crucible cap through hole (45).

6. The crucible pressing device according to claim 5, characterized in that: The crucible cap pressure plate (7) has an inclined part (73) on one side of its top.

7. The crucible pressing device according to claim 2, characterized in that: The crucible elastic base (5) includes a base two (51) that matches the crucible elastic base mounting hole (81), a spring two (52) is provided on the base two (51), and a crucible placement seat (53) is provided at the other end of the spring two (52).

8. The crucible pressing device according to claim 7, characterized in that: The bottom of the crucible pressure plate (6) is provided with a crucible pressure platform (61) that matches the shape of the crucible mounting base (53).

9. A crucible pressing device according to claim 8, characterized in that: The crucible pressure plate (6) has an inclined part (62) on one side of its top.

10. The crucible pressing device according to claim 1, characterized in that: The pull rod assembly (2) includes a left slider (21) and a right slider (22) respectively disposed in the left and right guide rails (86). A pull rod (23) is disposed between the left slider (21) and the right slider (22). A round rod (1) is disposed through the rubber roller (3). The two ends of the round rod (1) are rotatably disposed in the left slider (21) and the right slider (22) respectively.

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