Crucible packaging tool for differential scanning calorimeter

Abstract

The utility model provides a crucible packaging tool for a differential scanning calorimeter, which comprises a fixed shell, the bottom end of the fixed shell is connected with a base in a sliding manner, a plurality of lower dies are arranged in the base, and a crucible is arranged on the surface of each lower die; the top end of the fixing shell is slidably connected with a pressing die, a plurality of fixing holes are formed in the pressing die, and upper dies are installed in the fixing holes. The upper die is in threaded connection with the first screw, and the top end of the first screw is clamped in the fixing hole; a rubber pad is mounted between the top end of the upper die and the pressing die; a stamping block is connected into the upper die in a sliding mode, and the stamping block extrudes a crucible cover. A first spring is installed in the upper die, and the two ends of the first spring abut against the first screw and the stamping block correspondingly. The crucible packaging tool for the differential scanning calorimeter has the advantages that a plurality of crucibles can be packaged at the same time, and the packaging effect is good.

Description

Technical Field

[0001] This utility model relates to the field of differential scanning calorimetry, and in particular to a crucible packaging tool for differential scanning calorimetry. Background Technology

[0002] Thermal analyzers are a type of conventional analytical instrument that plays a crucial role in materials science and related fields. They allow for the continuous measurement and analysis of the thermal properties of materials under programmed temperature and atmospheric conditions. Thermal analysis techniques are widely used in physics, chemistry, materials science, biology, medicine, environment, and chemical engineering. Differential scanning calorimetry (DSC) is one of the most commonly used analytical techniques in thermal analysis. It can be widely used to study phase transitions, reactions, and thermodynamic properties (such as specific heat capacity and enthalpy change) of materials.

[0003] When using differential scanning calorimetry (DSC) to detect the physical and chemical properties of materials, it is usually necessary to seal the material to be tested in a crucible, and then use a sample preparation device to encapsulate the material inside the crucible. Currently, these sample preparation devices are typically only compatible with one size of crucible, and crucibles of different sizes are incompatible with the sample preparation device. In addition, only one crucible can be encapsulated at a time during sample preparation, which has disadvantages such as low efficiency and easy confusion between different samples.

[0004] Therefore, it is necessary to provide a new crucible packaging tool for differential scanning calorimeters to solve the above problems. Utility Model Content

[0005] The technical problem solved by this utility model is to provide a crucible sealing tool for a differential scanning calorimeter that can simultaneously seal multiple crucibles and has a good sealing effect.

[0006] To solve the above-mentioned technical problems, the present invention provides a crucible packaging tool for a differential scanning calorimeter, comprising: a fixed shell, the bottom end of which is slidably connected to a base, a plurality of lower molds being installed inside the base, and a crucible being placed on the surface of the lower molds; a pressing mold being slidably connected to the top end of the fixed shell, the pressing mold having a plurality of fixing holes inside, and an upper mold being installed inside the fixing holes; the upper mold being threadedly connected to a first screw, and the tip of the first screw being engaged inside the fixing holes; a rubber pad being installed between the top end of the upper mold and the pressing mold; a stamping block being slidably connected inside the upper mold, the stamping block pressing the crucible cover; and a first spring being installed inside the upper mold, with both ends of the first spring abutting against the first screw and the stamping block, respectively.

[0007] Preferably, the second screw is threaded to the lower mold, and one end of the second screw is engaged inside the base.

[0008] Preferably, the top surface of the lower mold is provided with a mounting hole, and the crucible is placed inside the mounting hole.

[0009] Preferably, a plurality of first connecting rods are symmetrically installed inside the fixed shell, and a plurality of second connecting rods are installed at the surface edge of the base; the second connecting rods are slidably connected to the interior of the first connecting rods, and a second spring is installed inside the first connecting rods, with one end of the second spring abutting against the top surface of the second connecting rod.

[0010] Preferably, the lower mold and the upper mold are in one-to-one correspondence, and the centers of the corresponding lower mold, the upper mold and the mounting hole are located on the same straight line.

[0011] Compared with related technologies, the crucible sealing tool for differential scanning calorimeter provided by this utility model has the following advantages:

[0012] This utility model provides a crucible encapsulation tool for a differential scanning calorimeter. In use, the fixed shell and the base are placed on a table. The crucible is placed inside the mounting hole, and the material to be tested is placed inside the crucible. Then, the crucible lid is placed on the surface of the crucible. A pressing mold is placed inside the fixed shell. The stamping block on one side of the pressing mold abuts against the surface of the crucible lid, pressing the pressing mold. The pressing mold and the base are close to each other. The stamping block presses the crucible lid downwards. During the stamping process, the first spring inside the upper mold acts as a buffer, gradually increasing the pressure of the stamping block on the crucible lid, preventing a sudden and rapid increase in pressure. This facilitates the stamping block pressing the crucible lid into the interior of the crucible, while preventing the surface of the crucible lid from cracking during the pressing process. Furthermore, as the stamping force gradually increases, the rubber pad between the upper molds is compressed. The upper mold acts as a buffer, allowing each upper mold to move upwards and reducing the pressure it receives. It also helps to evenly distribute the compressive force from the pressing mold to each upper mold, ensuring uniform force on the crucible lid, consistent crucible pressing, and improved crucible packaging quality. After packaging, the pressing mold can be removed, allowing for simultaneous packaging of multiple crucibles, improving packaging efficiency. The pressed crucibles are located at the top of the lower mold, making them easy to distinguish and preventing confusion after packaging. Furthermore, when the size of the crucible to be packaged changes, the first and second screws are rotated to remove the upper mold from the pressing mold and the lower mold from the base. The corresponding lower and upper molds are then replaced, and screws are used to fix the lower and upper molds to the base and pressing mold respectively, facilitating the packaging of crucibles of different sizes. Attached Figure Description

[0013] Figure 1 A schematic diagram of a preferred embodiment of the crucible packaging tool for a differential scanning calorimeter provided by this utility model;

[0014] Figure 2 for Figure 1 The diagram shows an exploded view of the fixed shell and pressing mold structure.

[0015] Figure 3 for Figure 1 The diagram shows the internal structure of the fixed shell.

[0016] The following are the labels in the diagram: 1. Fixed shell, 2. Pressing mold, 21. Fixing hole, 3. First screw, 4. Lower mold, 41. Mounting hole, 5. Base, 6. Rubber pad, 7. Crucible, 71. Crucible cover, 8. First spring, 9. Stamping block, 10. Upper mold, 11. Second screw, 12. First connecting rod, 13. Second spring, 14. Second connecting rod. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Please see Figures 1 to 3 , Figure 1 A schematic diagram of a preferred embodiment of the crucible packaging tool for a differential scanning calorimeter provided by this utility model; Figure 2 for Figure 1 The diagram shows an exploded view of the fixed shell and pressing mold structure. Figure 3 for Figure 1The diagram shows the internal structure of the fixed shell. The crucible encapsulation tool for the differential scanning calorimeter includes: a fixed shell 1, with a base 5 slidably connected to its bottom end; multiple lower molds 4 are installed inside the base 5, and a crucible 7 is placed on the surface of each lower mold 4; a pressing mold 2 is slidably connected to the top end of the fixed shell 1; the pressing mold 2 has multiple fixing holes 21 inside, and an upper mold 10 is installed inside each fixing hole 21; the upper mold 10 is threadedly connected to a first screw 3, and the top end of the first screw 3 is engaged inside the fixing hole 21; a rubber pad 6 is installed between the top end of the upper mold 10 and the pressing mold 2; a stamping block 9 is slidably connected inside the upper mold 10, and the stamping block 9 presses against the crucible cover 71; a first spring 8 is installed inside the upper mold 10, and the two ends of the first spring 8 respectively abut against the first screw 3 and the stamping block 9. In use, the fixing shell 1 and the base 5 are placed on a table. The crucible 7 is placed inside the mounting hole, and the material to be tested is placed inside the crucible 7. Then, the crucible lid 71 is placed on the surface of the crucible 7. The pressing mold 2 is placed inside the fixing shell 1. The stamping block 9 on one side of the pressing mold 2 abuts against the surface of the crucible lid 71, squeezing the pressing mold 2. The pressing mold 2 and the base 5 are close to each other. The stamping block 9 presses the crucible lid 71 downward. During the stamping process, the first spring 8 inside the upper mold 10 acts as a buffer, so that the squeezing force of the stamping block 9 on the crucible lid 71 gradually increases, preventing them from colliding. The sudden and rapid increase in extrusion pressure facilitates the stamping block 9 to press the crucible cover 71 into the interior of the crucible 7, while preventing the surface of the crucible cover 71 from cracking during the extrusion process. As the stamping pressure gradually increases, the rubber pads 6 between the upper molds 10 are compressed, and the rubber pads 6 act as a buffer. Each upper mold 10 has room to move upward to reduce the pressure it receives, and at the same time, it helps to evenly distribute the extrusion pressure on the pressing mold 2 to each upper mold 10, thereby making the crucible cover 71 subjected to uniform force and improving the packaging quality of the crucible 7. After packaging is completed, the pressing mold 2 can be removed, thereby realizing the simultaneous packaging of multiple crucibles 7 and improving packaging efficiency.

[0019] The second screw 11 is threadedly connected to the lower mold 4, and one end of the second screw 11 is locked inside the base 5 in order to use the second screw 11 to fix the lower mold 4 inside the base 5.

[0020] The top surface of the lower mold 4 is provided with a mounting hole 41, and the crucible 7 is placed inside the mounting hole 41 in order to facilitate the placement and fixing of the crucible 7 on the top surface of the lower mold 4.

[0021] Multiple first connecting rods 12 are symmetrically installed inside the fixed shell 1, and multiple second connecting rods 14 are installed at the surface edge of the base 5. The second connecting rods 14 are slidably connected to the interior of the first connecting rods 12. A second spring 13 is installed inside the first connecting rod 12, and one end of the second spring 13 abuts against the top surface of the second connecting rod 14. In order to facilitate the base 5 to squeeze the second spring 13 when it slides upward inside the fixed shell 1 to compress the crucible 7, the second spring 13 plays a buffering role to avoid excessive compression force. The second spring 13, the first connecting rods 12 and the second connecting rods 14 limit and guide the base 5 to prevent the base 5 from completely separating from the fixed shell 1, and to make the base 5 move linearly inside the fixed shell 1.

[0022] The lower mold 4 and the upper mold 10 are in one-to-one correspondence, and the centers of the corresponding lower mold 4, the upper mold 10 and the mounting hole 41 are located on the same straight line. In order to facilitate the upper mold 10 and the lower mold 4 to approach each other to compress the crucible 7 and the crucible cover 71.

[0023] The working principle of the crucible packaging tool for differential scanning calorimeter provided by this utility model is as follows: Before packaging, select the corresponding fixing plate 3 and pressing mold 2 according to the size of the crucible 5, place the fixing plate 3 and the base 6 into the inside of the fixed mold, then place the crucible 5 into the inside of the fixing hole 31, and place the material to be tested into the inside of the crucible 5. After the material is placed, cover the surface of the crucible 5 with the crucible cover 51; place the pressing mold 2 into the inside of the fixed mold, align the pressing hole 21 with the crucible cover 51, and press the pressing mold 2 downward. The pressing mold 2 presses the crucible cover 51 downward and pushes the fixing plate 3 and the second connecting rod 8 downward to press the spring 9. During this process, the pressing mold 2 pre-presses the crucible cover 51. When the guide post 4 touches the surface of the base 6, as the pressing mold 2 continues to move downward, the crucible cover 51 and the crucible 5 are pressed and fixed together, completing the packaging. Furthermore, when the size of the crucible 5 to be packaged changes, the first screw 3 and the second screw 11 are rotated to remove the upper mold 10 from the inside of the pressing mold 2 and the lower mold 4 from the inside of the base 5. The lower mold 4 and the upper mold 10 corresponding to the crucible 5 are then replaced. The lower mold 4 and the upper mold 10 are then fixed to the inside of the base 5 and the pressing mold 2 respectively using screws, thereby facilitating the packaging of crucibles 5 of different sizes.

[0024] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, such as thermogravimetric analyzers and laser thermal conductivity meters, are similarly included within the patent protection scope of this utility model.

Claims

1. A crucible sealing tool for a differential scanning calorimeter, characterized in that, include: A fixed shell (1) is slidably connected to a base (5) at the bottom end of the fixed shell (1). Multiple lower molds (4) are installed inside the base (5), and a crucible (7) is placed on the surface of the lower mold (4). The top of the fixed shell (1) is slidably connected to the pressing mold (2), and the pressing mold (2) has a plurality of fixing holes (21) inside. The upper mold (10) is installed inside the fixing holes (21); the upper mold (10) is threadedly connected to the first screw (3), and the top of the first screw (3) is stuck inside the fixing hole (21); a rubber pad (6) is installed between the top of the upper mold (10) and the pressing mold (2); a stamping block (9) is slidably connected inside the upper mold (10), and the stamping block (9) presses the crucible cover (71); a first spring (8) is installed inside the upper mold (10), and the two ends of the first spring (8) abut against the first screw (3) and the stamping block (9) respectively.

2. The crucible sealing tool for differential scanning calorimetry according to claim 1, characterized in that, The second screw (11) is threadedly connected to the lower mold (4), and one end of the second screw (11) is locked inside the base (5).

3. The crucible sealing tool for differential scanning calorimetry according to claim 2, characterized in that, The top surface of the lower mold (4) is provided with a mounting hole (41), and the crucible (7) is placed inside the mounting hole (41).

4. The crucible sealing tool for a differential scanning calorimeter according to claim 1, characterized in that, Multiple first connecting rods (12) are symmetrically installed inside the fixed shell (1), and multiple second connecting rods (14) are installed at the surface edge of the base (5); the second connecting rods (14) are slidably connected to the inside of the first connecting rods (12), and a second spring (13) is installed inside the first connecting rods (12), and one end of the second spring (13) abuts against the top surface of the second connecting rods (14).

5. The crucible sealing tool for a differential scanning calorimeter according to claim 3, characterized in that, The lower mold (4) and the upper mold (10) are in one-to-one correspondence, and the centers of the corresponding lower mold (4), upper mold (10) and mounting hole (41) are located on the same straight line.

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