A hot set vickers testing machine

Abstract

This utility model discloses a heat distortion Vicat testing machine in the field of Vicat testing machine technology. It includes a sealed chamber with a control panel installed on the outside. An airtight door is slidably connected to the opening of the sealed chamber. An airtight cavity is formed inside the sealed chamber, and a test platform is installed inside the airtight cavity. A Vicat testing component is installed on top of the test platform. This design, through the airtight door slidably connected to the opening of the sealed chamber, can both open and seal the opening. When the test platform and Vicat testing component are powered on, the airtight door in its sealed state can prevent harmful gases generated by the high-temperature state of the heat transfer oil from leaking out of the sealed chamber. When the test platform and Vicat testing component are not in use, the sealed chamber can also prevent the test platform and Vicat testing component from being corroded by external dust, moisture, and other contaminants by adjusting the closure of the airtight door.

Description

Technical Field

[0001] This utility model relates to the field of Vicat testing machine technology, and in particular to a heat distortion Vicat testing machine. Background Technology

[0002] The heat distortion Vicat tester is a specialized testing device used to test the changes in the mechanical properties of polymer materials (such as plastics and rubber) under heating conditions. It is primarily used to determine the heat distortion temperature (HDT) and Vicat softening temperature (VST) of materials under specified loads and heating rates. In the heat distortion test, the sample is subjected to a certain load, and the temperature at which the sample undergoes a specified deformation as the temperature rises is the heat distortion temperature. In the Vicat test, a constant load is applied through a standard-shaped indenter, and the temperature at which the sample softens to a certain depth is recorded. This equipment is widely used in material quality control, R&D evaluation, and product performance standard testing, helping to determine whether a material possesses good heat resistance, rigidity, and dimensional stability in actual use.

[0003] To test the mechanical properties of new materials under heated conditions, a Vicat testing machine is typically used for heat deformation experiments. Most Vicat testing machines on the market currently employ an open structure. While this facilitates sample clamping and observation, it also exposes several serious shortcomings: Firstly, during idle periods or preheating, the core components are highly susceptible to corrosion from external dust, moisture, and other contaminants, leading to a significant decrease in the sensitivity and lifespan of the temperature control system and displacement sensing devices. Secondly, the open design cannot provide effective sealing for the testing machine under high-temperature operating conditions, failing to prevent potential hazards from harmful high-temperature gases to the operator, and also hindering the safe recirculation and recovery of the high-temperature heat transfer oil discharged after the test. Therefore, its use is subject to certain limitations.

[0004] Based on this, we propose a heat distortion Vicat testing machine to solve the problems mentioned above. Utility Model Content

[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of the present invention, to avoid obscuring the purpose of these documents, and such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0006] Therefore, the purpose of this utility model is to provide a heat distortion Vicat testing machine that can solve the problems of existing open-type Vicat testing machines where the core components are easily corroded when idle or preheating, and where they cannot effectively seal and block harmful gases and safely recirculate and recover high-temperature heat transfer oil during high-temperature operation.

[0007] To solve the above technical problems, this utility model provides a heat distortion Vicat testing machine, which adopts the following technical solution: it includes a sealed chamber, a control panel is installed on the outside of the sealed chamber, an airtight door is slidably connected to the opening of the sealed chamber, an airtight cavity is opened inside the sealed chamber, a test platform is installed inside the airtight cavity, and a Vicat testing component is installed on the top of the test platform; The Vicat test assembly includes a lifting adjustment platform, which is installed between two sets of output ends of the test platform. Several sets of support components are suspended and connected to the bottom of the lifting adjustment platform. Each set of support components has a pressing component in the middle. Each set of support components has several sets of metal weight pans on its top. Test samples are placed at the bottom of each set of support components.

[0008] Optionally, the support component includes a first base plate, a second base plate is disposed on the top of the first base plate, an adjusting rod is fixedly connected between one end of the first base plate and the second base plate, a lifting adjusting frame is slidably connected to the top of the adjusting rod, and a pressure dial gauge is also installed at one end of the lifting adjusting frame.

[0009] Optionally, a placement bracket is installed at both ends of the top of the first substrate, and a positioning sleeve is provided at the center of the top of the second substrate.

[0010] Optionally, the pressing component includes a pressing sleeve that matches the structure of the positioning sleeve. A limiting rod is connected to one bottom side of the pressing sleeve, and the limiting rod and both sides of the positioning sleeve are in sliding fit. A pressing rod is connected to the bottom of the pressing sleeve, and the pressing rod is in sliding fit with the second base plate and the middle part of the positioning sleeve. A pressing head is also installed at one end of the pressing sleeve.

[0011] Optionally, a circular magnetic block is installed at the bottom of the metal weight pan, and a circular groove is provided at the top of both the metal weight pan and the pressure sleeve. The circular groove matches the structure of the circular magnetic block, and the circular groove and the circular magnetic block are interlocked.

[0012] Optionally, the lifting adjustment platform has several sets of heating oil tanks in the middle, the heating oil tanks are matched with the structure of the first base plate and the second base plate, the lifting adjustment platform has an annular guide groove around the heating oil tanks, the annular guide groove has an oil outlet on one side, and the lifting adjustment platform is also equipped with a return container on the side near the oil outlet, the return container and the heating oil tank are connected in a through manner.

[0013] In summary, this utility model has at least one of the following beneficial effects: 1. The heat distortion Vicat testing machine designed in this scheme, by setting up a sealed chamber and airtight doors, can effectively isolate external dust, moisture and pollutants from corroding the test platform and Vicat test components. This protects the core components of the equipment during idle or preheating stages. By adjusting the closure of the airtight doors, harmful gases generated by the high temperature of the heat transfer oil can be prevented from leaking out of the sealed chamber during operation of the test platform and Vicat test components, thereby ensuring the health and safety of operators. At the same time, it extends the service life of the temperature control system and displacement sensing device, ensures the long-term stability and accuracy of test data, and achieves effective control of the test environment and comprehensive protection of the equipment.

[0014] 2. The heat distortion Vicat testing machine designed in this scheme, by setting an annular guide channel, an oil drain port, and a return container on the lifting adjustment platform, can efficiently collect and return the high-temperature heat transfer oil dripping after the test. When the experiment is completed, as the first and second substrates and other components used to support and press down the test sample rise from the heating oil tank, the high-temperature heat transfer oil adhering to their surfaces will naturally drip out under gravity. This dripped heat transfer oil is guided by the annular guide channel to converge at the oil drain port and finally flows into the return container. With the structural design of the return container and the heating oil tank being connected through, the collected high-temperature heat transfer oil can be discharged back into the heating oil tank, realizing the recycling of the heat transfer oil. This process not only improves the utilization rate of the heat transfer oil and reduces the test cost, but also reduces environmental pollution, achieving efficient resource utilization and environmental protection goals. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the sealed chamber structure of this utility model; Figure 3 This is a schematic diagram of the Vicat test assembly structure of this utility model; Figure 4 This is a schematic diagram of the supporting component structure of this utility model; Figure 5 This is a schematic diagram of the pressing component structure of this utility model; Figure 6 This is a schematic diagram of the airtight cavity structure of this utility model.

[0017] Explanation of reference numerals in the attached drawings: 1. Sealed chamber; 2. Control panel; 3. Airtight door; 4. Airtight cavity; 5. Test platform; 6. Vicat test assembly; 7. Lifting adjustment platform; 8. Support component; 9. Pressing component; 10. Metal weight pan; 11. Test sample; 12. First base plate; 13. Second base plate; 14. Adjusting rod; 15. Lifting adjustment frame; 16. Pressure dial gauge; 17. Placement bracket; 18. Positioning sleeve; 19. Pressing sleeve; 20. Limiting rod; 21. Pressing rod; 22. Pressure head; 23. Circular magnetic block; 24. Circular groove; 25. Heating oil tank; 26. Annular guide groove; 27. Oil drain port; 28. Return container. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Example: Refer to Figures 1 to 6 This utility model provides an embodiment of a heat distortion Vicat testing machine, comprising a sealed chamber 1, a control panel 2 installed on the outside of the sealed chamber 1, an airtight door 3 slidably connected to the opening of the sealed chamber 1, an airtight cavity 4 inside the sealed chamber 1, a test platform 5 installed inside the airtight cavity 4, a Vicat testing assembly 6 installed on the top of the test platform 5, the Vicat testing assembly 6 including a lifting adjustment platform 7 installed between two sets of output ends of the test platform 5, several sets of support components 8 suspended and connected to the bottom of the lifting adjustment platform 7, each set of support components 8 having a pressing component 9 in the middle, and several sets of metal... The weight pan 10 and several sets of support components 8 are respectively placed at the bottom of the test sample 11. The heat deformation Vicat tester can open and seal the opening of the sealed chamber 1 by sliding the airtight door 3 at the opening of the sealed chamber 1. When the test platform 5 and Vicat test component 6 are powered on, the airtight door 3 in the sealed state can prevent the harmful gas generated by the heat transfer oil at high temperature from leaking out of the interior of the sealed chamber 1. When the test platform 5 and Vicat test component 6 are not in use, the sealed chamber 1 can also prevent the test platform 5 and Vicat test component 6 from being corroded by external dust, water vapor and other pollutants by adjusting the closing of the airtight door 3.

[0020] The support component 8 includes a first base plate 12, a second base plate 13 on top of the first base plate 12, an adjusting rod 14 fixedly connected between one end of the first base plate 12 and the second base plate 13, a lifting adjustment frame 15 slidably connected to the top of the adjusting rod 14, and a pressure micrometer 16 installed at one end of the lifting adjustment frame 15. Through the coordinated use of the first base plate 12, the second base plate 13, the adjusting rod 14, the lifting adjustment frame 15, and the pressure micrometer 16, the support component 8 can provide stable support and precise downward pressure for the test sample 11 during the test. This design ensures accurate monitoring of the deformation process of the test sample 11 under heating conditions, achieving precise measurement of changes in the material's mechanical properties. Placement brackets 17 are installed at both ends of the top of the first base plate 12, and a positioning sleeve 18 is provided in the middle of the top of the second base plate 13. The positioning sleeve 18, installed in the middle of the top of the second base plate 13, provides precise guidance and positioning for the pressing component 9, ensuring... When pressure is applied, the pressing component 9 can accurately align with the test sample 11, achieving uniform loading and stable pressing of the test sample 11. The pressing component 9 includes a pressing sleeve 19, which is structurally matched with the positioning sleeve 18. A limit rod 20 is connected to one bottom side of the pressing sleeve 19. The limit rod 20 and both sides of the positioning sleeve 18 are in sliding fit. A pressing rod 21 is connected to the bottom of the pressing sleeve 19. The pressing rod 21 is connected to the middle of the second base plate 13 and the positioning sleeve 18. With a sliding fit, a pressure head 22 is also installed at one end of the pressure sleeve 19. The pressure component 9, through the cooperation between the pressure sleeve 19, the limiting rod 20, the pressure rod 21, and the pressure head 22, can ensure that the load provided by the metal weight pan 10 and the measuring force of the pressure dial indicator 16 are accurately applied to the surface of the test sample 11. This structural design can realize concentrated indentation or deformation control of the test sample 11, thereby enabling accurate measurement of the Vicat softening point and heat distortion temperature of the material under heated conditions.

[0021] A circular magnet 23 is installed at the bottom of the metal weight pan 10. Circular grooves 24 are provided at the top of both the metal weight pan 10 and the pressure sleeve 19. The circular grooves 24 and the circular magnets 23 are structurally matched and interlocked. This interlocking design allows for the addition or removal of the metal weight pan 10 as needed to adjust the pressure applied to the test sample 11. Furthermore, the adsorption effect of the circular magnets 23 ensures the stability of the metal weight pan 10 during the test, preventing displacement or detachment due to vibration or other external forces, thus guaranteeing the accuracy and reliability of the test data. Several sets of heating oil tanks 25 are provided in the middle of the lifting adjustment platform 7. The tank 25 is structurally matched with the first substrate 12 and the second substrate 13. The lifting adjustment platform 7 is provided with an annular guide channel 26 around the heating oil tank 25. An oil outlet 27 is provided on one side of the annular guide channel 26. A return container 28 is also installed on the side of the lifting adjustment platform 7 near the oil outlet 27. The return container 28 is connected to the heating oil tank 25. Through the coordinated use of the heating oil tank 25, the annular guide channel 26, the oil outlet 27 and the return container 28, the lifting adjustment platform 7 can efficiently collect the high-temperature heat transfer oil dripping after the test. With the structural design of the return container 28 being connected to the heating oil tank 25, it is also convenient to discharge the collected high-temperature heat transfer oil back into the heating oil tank 25, realizing the recycling of the heat transfer oil.

[0022] Working Principle: The heat distortion Vicat testing machine designed in this scheme mainly consists of key components such as a sealed chamber 1, a control panel 2, an airtight door 3, an airtight cavity 4, a testing platform 5, and a Vicat testing assembly 6. The testing platform 5 and the Vicat testing assembly 6 are carefully installed within the airtight cavity 4 inside the sealed chamber 1. The airtight door 3, installed via a sliding connection at the opening of the sealed chamber 1, allows for flexible opening and sealing. When the testing platform 5 and the Vicat testing assembly 6 are powered on, the sealed airtight door 3 effectively prevents harmful gases generated by the heat transfer oil at high temperatures from leaking out of the sealed chamber 1, ensuring the safety and stability of the experimental environment. When the testing platform 5 and the Vicat testing assembly 6 are idle, the sealed chamber 1, by closing the airtight door 3, reliably prevents the testing platform 5 and the Vicat testing assembly 6 from being corroded by external dust, moisture, and other pollutants, extending the service life and maintenance cycle of the equipment.

[0023] In this heat deformation Vicat testing machine design, at the end of the heat deformation experiment, the first substrate 12, the second substrate 13, and other components used to support and press down the test sample 11 will rise from inside the heating oil tank 25. The high-temperature heat transfer oil adhering to the surfaces of the first substrate 12, the second substrate 13, and other components will naturally drip out under gravity. When the high-temperature heat transfer oil drips from the surfaces of these components onto the surface of the lifting adjustment platform 7, the lifting adjustment platform 7 can efficiently collect the dripping high-temperature heat transfer oil through the close cooperation between the cleverly designed annular guide groove 26, the oil outlet 27, and the return container 28. With the structural design of the through connection between the return container 28 and the heating oil tank 25, the high-temperature heat transfer oil collected on the surface of the lifting adjustment platform 7 can also be discharged back into the heating oil tank 25, realizing the recycling of the heat transfer oil and ensuring the efficiency and economy of the test process.

[0024] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A heat deflection tester comprising a sealed cabin (1), characterized in that: The sealed chamber (1) is equipped with a control panel (2) on the outside, and an airtight door (3) is slidably connected to the opening of the sealed chamber (1). An airtight cavity (4) is opened inside the sealed chamber (1), and a test platform (5) is installed inside the airtight cavity (4). A Vicat test assembly (6) is installed on the top of the test platform (5). The Vicat test assembly (6) includes a lifting adjustment platform (7), which is installed between two sets of output ends of the test platform (5). The bottom of the lifting adjustment platform (7) is connected to several sets of support components (8). Each set of support components (8) has a pressing component (9) in the middle. Each set of support components (8) has several sets of metal weight pans (10) on its top. Each set of support components (8) also has test samples (11) placed at its bottom.

2. A hot creep testing machine according to claim 1, wherein: The support component (8) includes a first base plate (12), a second base plate (13) is provided on the top of the first base plate (12), an adjusting rod (14) is fixedly connected between one end of the first base plate (12) and the second base plate (13), a lifting adjusting frame (15) is slidably connected to the top of the adjusting rod (14), and a pressure dial gauge (16) is also installed at one end of the lifting adjusting frame (15).

3. A hot creep testing machine according to claim 2, wherein: The first substrate (12) has a placement bracket (17) installed at both ends of its top, and the second substrate (13) has a positioning sleeve (18) at the top center.

4. A hot creep testing machine according to claim 3, wherein: The pressing component (9) includes a pressing sleeve (19), which is structurally matched with the positioning sleeve (18). A limiting rod (20) is connected to the bottom of one side of the pressing sleeve (19). The limiting rod (20) and both sides of the positioning sleeve (18) are in sliding fit. A pressing rod (21) is connected to the bottom of the pressing sleeve (19). The pressing rod (21) is in sliding fit with the second base plate (13) and the middle part of the positioning sleeve (18). A pressing head (22) is also installed at one end of the pressing sleeve (19).

5. A hot creep test machine according to claim 4, wherein: A circular magnetic block (23) is installed at the bottom of the metal weight pan (10). A circular groove (24) is provided at the top of both the metal weight pan (10) and the pressure sleeve (19). The circular groove (24) and the circular magnetic block (23) are structurally matched and are interlocked.

6. A hot creep test machine as claimed in claim 1, wherein: The lifting adjustment platform (7) has several sets of heating oil tanks (25) in the middle. The heating oil tanks (25) are structurally matched with the first substrate (12) and the second substrate (13). The lifting adjustment platform (7) has an annular guide groove (26) around the heating oil tanks (25). An oil drain port (27) is provided on one side of the annular guide groove (26). A return container (28) is also installed on the side of the lifting adjustment platform (7) near the oil drain port (27). The return container (28) and the heating oil tanks (25) are connected in a through manner.

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