High-temperature melt density measuring device

Abstract

The utility model provides a high-temperature melt density measuring device which comprises a base, a high-temperature furnace mounted above the base, a sample bearing assembly, a first lifting sliding table mounted on the base, a furnace door connected to the first lifting sliding table, and a second lifting sliding table connected to the second lifting sliding table and capable of driving the furnace door to move up and down so as to enable the furnace door to be separated from or abut against the lower part of the high-temperature furnace; the lower end of the sample bearing assembly is supported on the furnace door and can move upwards to be separated from the furnace door; the upper clamp is connected to the lower end of the sample bearing assembly; the lower clamp is butted with the upper clamp; the second lifting sliding table enables the lower clamp and the upper clamp to achieve up-down butt joint and further drives the sample bearing assembly to move upwards to be separated from the furnace door or enables the lower clamp to be separated from the upper clamp; the force sensor is arranged below the lower clamp, and the first industrial camera is arranged on one side of the high-temperature furnace and is used for recording the liquid level height change of the molten sample. The device can be used for detecting the density values of various melts in a molten state at different high temperatures on line.

Description

Technical Field

[0001] This utility model relates to the field of high-temperature physical property measurement technology, specifically to a high-temperature melt density measuring device. Background Technology

[0002] High-temperature melts generally refer to substances in a molten state with temperatures above 800K. Precise measurements of the physical properties of high-temperature melts can reflect their microscopic and kinetic properties. The density of high-temperature melts has a richer physical meaning and important applications, such as determining the type and purity of materials, studying surface tension, viscosity, and diffusion, controlling metal processing techniques, and calculating the structure factor of molten metals. For lava systems, accurate density values ​​can derive properties such as the partial molecular volume and, to a certain extent, determine the composition of the electrolyte.

[0003] Currently, the main methods for measuring the density of high-temperature melts are the common pressure gauge method, hydrometry method, Archimedes' method, and dilatation method. The pressure gauge method and dilatation method are suitable for measuring the density of low-temperature molten salts and low-melting-point metals; the hydrometry method is suitable for determining the density of volatile and easily flowing melts, and is often used for rapid and rough determinations. The Archimedes' method is simple and accurate, and is widely used to determine the density of various high-temperature melts.

[0004] Currently, the measurement of melt density generally uses a balance with a viscometer attached, combined with Archimedes' principle. However, this method has several problems: (1) The viscometer itself has a large mass, requiring a large range for the balance, which reduces the accuracy of buoyancy measurement; (2) The viscometer is constantly attached to the balance, which is under load and not fixed, inevitably affecting the accuracy of viscosity testing; (3) Using a method where three corundum rods clamp the crucible for fixation, if there are a large amount of volatiles in the melt or the melt overflows, the corundum rods and crucible will stick together and cannot be separated after cooling, requiring the entire set to be replaced, resulting in a significant burden on testing costs; (4) Melt density measurement relies solely on the balance, making it impossible to verify its accuracy and reliability. If a machine vision method is used to monitor changes in the liquid level, the test results can be mutually verified. Therefore, the existing testing devices have large errors, and their stability, accuracy, and reliability do not meet the requirements for guiding production. Moreover, they generally suffer from high testing costs and low experimental repeatability. Therefore, it is necessary to design a stable, reliable, and high-precision high-temperature melt density testing device. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model proposes a high-temperature melt density measuring device, comprising:

[0006] Base;

[0007] A high-temperature furnace, mounted above the base via a first bracket, is used to heat the sample to a molten state.

[0008] A sample carrier assembly, which is used to carry the sample to be tested and can drive the sample to be tested into the furnace cavity of the high-temperature furnace;

[0009] A first lifting slide is installed on the base, and a furnace door is connected to it via a second bracket. The first lifting slide can move the furnace door up and down, so that it can detach from or abut against the bottom of the high-temperature furnace. The lower end of the sample carrying component is supported on the furnace door and can move upward to detach from the furnace door.

[0010] An upper clamp connected to the lower end of the sample carrier assembly and a lower clamp docking with the upper clamp;

[0011] The second lifting slide is used to drive the lower clamp to move up and down, so that the lower clamp and the upper clamp can be docked and further drive the sample carrying component to move upward and get away from the furnace door or to get the lower clamp away from the upper clamp.

[0012] A force sensor installed below the lower clamp is used to measure the force changes of the force-bearing assembly consisting of the lower clamp, the upper clamp, the sample carrying assembly, and the sample to be tested.

[0013] A first industrial camera is installed on one side of the high-temperature furnace to record the changes in the liquid level of the molten sample.

[0014] The rotor, positioned above the sample carrier assembly, is capable of extending into the molten sample.

[0015] As a further explanation of this utility model, the sample carrying assembly includes a crucible holder and a crucible mounted on the crucible holder;

[0016] The crucible base has an inverted conical structure, and a circular hole is provided on the furnace door. The lower end of the inverted conical structure is engaged with the circular hole and can extend below it, while the upper end extends into the furnace cavity. The bottom end of the crucible base is fixedly connected to the upper clamp.

[0017] As a further explanation of this utility model, a square groove is provided on the crucible holder, and the crucible has a square shape, so that the crucible can be locked in the square groove.

[0018] As a further explanation of this utility model, a thermocouple is also provided on one side of the crucible base, and the thermocouple is fixedly connected to the furnace door.

[0019] As a further explanation of this utility model, the upper clamp is composed of an upper connecting cylinder and an upper clamping seat fixedly connected, and the lower clamp is composed of a lower connecting cylinder and a lower clamping seat fixedly connected, and the upper clamping seat and the lower clamping seat can be docked.

[0020] As a further explanation of this utility model, the bottom surface of the upper clamping seat and the top surface of the lower clamping seat are respectively a concave spherical surface and a convex spherical surface, so that the upper clamping seat and the lower clamping seat can achieve concentric positioning when they are docked.

[0021] As a further explanation of this utility model, the device also includes a horizontally moving slide;

[0022] The horizontal moving slide is connected to the bottom of the second lifting slide, and is used to drive the second lifting slide to move back and forth in the horizontal direction, thereby realizing the reciprocating movement of the lower clamp in the horizontal direction.

[0023] As a further explanation of this utility model, a second industrial camera is fixedly connected to the second lifting slide via a third bracket. The height of the second industrial camera matches the top of the lower clamp, and it is used to monitor whether the lower clamp and the upper clamp are aligned.

[0024] As a further explanation of this utility model, a horizontal support plate is also fixedly connected to the second lifting slide. The force sensor is installed on the horizontal support plate. A connecting flange is provided at the bottom of the lower clamp and the top of the force sensor. The upper and lower connecting flanges are locked together by adjusting bolts and nuts.

[0025] As a further explanation of this utility model, a horizontal tilt sensor is also installed on the horizontal support plate, which is used to detect whether the lower clamp is horizontal.

[0026] Compared with the prior art, the present invention has the following beneficial technical effects:

[0027] This invention can detect the density of metals and their compounds, inorganic materials or mixtures thereof, and various melts in their molten state at different high temperatures online. Clear outline images of the sample in its high-temperature molten state are obtained in real time using an industrial camera, and the density value of the experimental sample in that state can be calculated.

[0028] Other features and advantages of this technical solution will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the technical solution. The objectives and other advantages of this technical solution can be realized and obtained by means of the structures particularly pointed out in the written description and the accompanying drawings.

[0029] The technical solution of this invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0030] The accompanying drawings are provided to further illustrate the present technical solution and form part of the specification. They are used together with the embodiments of the present technical solution to explain the present technical solution, but do not constitute a limitation thereof. In the accompanying drawings:

[0031] Figure 1 A schematic diagram of the overall structure of the high-temperature melt density measuring device provided by this utility model.

[0032] Figure 2 A schematic diagram of the connection structure between the sample carrier component and the furnace door provided by this utility model.

[0033] Figure 3 This is a schematic diagram of the structure of the horizontal moving slide provided by this utility model.

[0034] Explanation of reference numerals in the attached figures:

[0035] First support 1, second support 2, first lifting slide 3, lower clamp 4, lower clamping seat 401, lower connecting cylinder 402, base 5, force sensor 6, connecting flange 7, horizontal support plate 8, horizontal moving slide 9, servo motor 901, lead screw 902, nut seat 903, limit plate 904, guide rail 905, support seat 906, second lifting slide 10, horizontal tilt sensor 11, third support 12, second industrial camera 13, upper clamp 14, upper clamping seat 141, upper connecting cylinder 142, high temperature furnace 15, furnace cavity 151, furnace door 16, thermocouple 17, crucible 18, rotor 19, crucible seat 20. Detailed Implementation

[0036] The preferred embodiments of this technical solution are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only for illustration and explanation of this technical solution and are not intended to limit this technical solution.

[0037] like Figure 1As shown, this utility model provides a high-temperature melt density measuring device, including: a base 5; a high-temperature furnace 15 mounted on the base 5 via a first bracket 1, used to heat the sample to a molten state; a sample carrying assembly, used to carry the sample to be tested and capable of driving the sample to be tested into the furnace cavity 151 of the high-temperature furnace 15; a first lifting slide 3 mounted on the base 5, on which a furnace door 16 is connected via a second bracket 2, the first lifting slide 3 being able to drive the furnace door 16 up and down, so that it detaches from or abuts against the bottom of the high-temperature furnace 15; the lower end of the sample carrying assembly supports the furnace door 16 and can move upward to detach from the furnace door 16; and a component connected to the lower end of the sample carrying assembly... The system includes an upper clamp 14 and a lower clamp 4 docking with the upper clamp 14; a second lifting slide 10, which drives the lower clamp 4 to move up and down, so that the lower clamp 4 docks with the upper clamp 14 and further drives the sample carrying assembly to move upward and detach from the furnace door 16 or detach the lower clamp 4 from the upper clamp 14; a force sensor 6 installed below the lower clamp 4, which measures the force changes of the force-bearing assembly consisting of the lower clamp 4, the upper clamp 14, the sample carrying assembly, and the sample to be tested; a first industrial camera installed on one side of the high-temperature furnace 15, which records the liquid level changes of the molten sample; and a rotor 19 installed above the sample carrying assembly, which can extend into the molten sample.

[0038] When using the above measuring device, the sample material to be tested is first heated to the target temperature at a specified heating rate and kept at that temperature. The second lifting slide 10 is then activated to move the lower clamp 4 upward, so that the lower clamp 4 and the upper clamp 14 are aligned vertically and further move the sample carrying assembly upward to detach from the furnace door 16 and become suspended. After the force sensor 6 reading stabilizes, it is zeroed. At this time, the first industrial camera (not shown in the figure) on one side of the high-temperature furnace 15 records the liquid level position H0. Then, the corundum rotor 19 is lowered. When the reading of the force sensor 6 begins to increase, it indicates that the rotor 9 has contacted the liquid surface. The rotor 19 is lowered until it is 10 mm away from the bottom of the sample container in the sample carrying assembly. The first industrial camera records the liquid level position H1 at this time. After the force sensor 6 reading stabilizes, it can be expressed as the buoyancy. According to the traditional Archimedes method (hydrostatic weighing method), the melt density can be calculated from the volume (known) of the corundum rotor 19. The Archimedes method is simple in principle and has a wide testing temperature range. It can achieve simultaneous measurement of density and surface tension. The main factors causing errors are the influence of surface tension and the machining accuracy of the sinker system. H1-H0 is the height of the liquid level rise. The inner diameter of the corundum crucible is known. The immersion volume of the rotor can also be obtained by visual observation through an industrial camera. The measured melt density is verified, thereby improving the measurement accuracy.

[0039] It should be noted that a window is provided on one side of the high-temperature furnace for monitoring the melting process of the material, and also for the first industrial camera to monitor changes in the liquid level. The first lifting slide 3 is designed to move the furnace door 16 up and down, allowing it to detach from or abut against the bottom of the high-temperature furnace 15. When it is necessary to add samples or replace the sample carrier assembly, the first lifting slide 3 moves the furnace door 16 down, thereby lowering the sample carrier assembly and detaching it from the furnace cavity 151 to perform the aforementioned operations. After completing the sample addition or sample carrier assembly replacement operations, the furnace door 16 can be raised again to send the sample carrier assembly into the furnace cavity 151.

[0040] In addition to measuring melt density, this device can also be used to measure the mass change of a sample during heating, i.e., thermogravimetric analysis, and thus qualitatively determine the chemical reactions occurring in the material. When the material reacts to generate a gas phase, it will lead to a decrease in mass. The weight change of the system can be monitored in real time by force sensor 6, which can specifically be a high-precision gravity sensor.

[0041] In some feasible ways, such as Figure 2 As shown, the sample carrying assembly specifically includes a crucible holder 20 and a crucible 18 mounted on the crucible holder 20. The crucible holder 20 has an inverted conical structure, and a circular hole is provided on the furnace door 16. The lower end of the inverted conical structure is engaged with the circular hole and can extend to its lower end, while the upper end extends into the furnace cavity 151. The bottom end of the crucible holder 20 is fixedly connected to the upper clamp 14. The crucible base 20 is designed to facilitate the engagement and disengagement of the sample carrying component from the furnace door 16. When the second lifting slide 10 moves the lower clamp 4 upward, the lower clamp 4 first engages with the upper clamp 14, and then further moves the sample carrying component upward to disengage from the furnace door 16 and become suspended. As the second lifting slide 10 moves the lower clamp 4 downward, the sample carrying component and the upper clamp 14 will slowly move downward with the lower clamp 4 under the action of gravity until the crucible base 20 is engaged in the round hole on the furnace door 16. At this time, when the second lifting slide 10 continues to move the lower clamp 4 downward, the lower clamp 4 will disengage from the upper clamp 14.

[0042] In some feasible ways, such as Figure 2 As shown, a square groove is provided on the crucible holder 20, and the crucible 18 has a square shape, allowing it to be securely clamped within the square groove. This design allows the crucible to be directly positioned on the crucible holder, with the square groove ensuring concentricity with the rotor. This design solves the problem of needing to replace the support when the melt overflows or evaporates in existing crucible clamping devices using three corundum rods, saving manpower and resources and reducing costs.

[0043] In some feasible ways, such as Figure 2As shown, a thermocouple 17 is also provided on one side of the crucible holder 20. The thermocouple 17 is fixedly connected to the furnace door 16. The setting of the thermocouple can facilitate real-time monitoring of the heating temperature of the sample, so that the sample can be heated to the specified target temperature and the temperature of the melt can be monitored in real time.

[0044] In some feasible embodiments, the upper clamp 14 is composed of an upper connecting cylinder 142 and an upper clamping seat 141 fixedly connected, and the lower clamp 4 is composed of a lower connecting cylinder 402 and a lower clamping seat 401 fixedly connected. The upper clamping seat 141 and the lower clamping seat 401 can be docked. The bottom surface of the upper clamping seat 141 and the top surface of the lower clamping seat 401 are respectively a concave spherical surface and a convex spherical surface, enabling the upper clamping seat 141 and the lower clamping seat 401 to achieve concentric positioning during docking.

[0045] In some feasible embodiments, the device further includes a horizontal moving slide 9; the horizontal moving slide 9 is connected to the bottom of the second lifting slide 10 and is used to drive the second lifting slide 10 to reciprocate in the horizontal direction, thereby realizing the reciprocating movement of the lower clamp 4 in the horizontal direction. The setting of the horizontal moving slide 9 enables the lower clamp 4 to reciprocate in the horizontal direction. When the first lifting slide 3 drives the furnace door 16 to move downward, in order to avoid the lower clamp 4 obstructing its travel, the lower clamp 4 can be moved to one side by the horizontal moving slide 9, so that the furnace door 16 and the sample carrying assembly can be lowered smoothly.

[0046] In some feasible implementations, a second industrial camera 13 is fixedly connected to the second lifting slide 10 via a third bracket 12. The height of the second industrial camera 13 matches the top of the lower clamp 4, and it is used to monitor whether the lower clamp 4 and the upper clamp 14 are aligned. Since the horizontal moving slide 9 causes the lower clamp 4 to displace in the horizontal direction, there may be slight errors when the lower clamp 4 returns to below the upper clamp 14 (because the coaxiality of the upper and lower clamps has been checked during assembly, there is no displacement of the lower clamp 4 in the other direction of the horizontal direction). When the lower clamp 4 is not aligned, there is no need to adjust it in the other direction. Therefore, the second industrial camera 13 is set to monitor whether the lower clamp 4 and the upper clamp 14 are aligned. When the second lifting slide 10 moves the lower clamp 4 upward to dock with the upper clamp 14, the second industrial camera 13 can detect whether the lower clamp 4 and the upper clamp 14 are aligned. When it detects that the lower clamp 4 and the upper clamp 14 are not aligned, the horizontal moving slide 9 will adjust the lower clamp 4 in the horizontal direction according to the deviation detected by the second industrial camera 13 until the lower clamp 4 and the upper clamp 14 are aligned.

[0047] In some feasible implementations, a horizontal support plate 8 is also fixedly connected to the second lifting slide 10. A force sensor 6 is mounted on the horizontal support plate 8. Connecting flanges 7 are provided at the bottom of the lower clamp 4 and the top of the force sensor 6. The upper and lower connecting flanges 7 are locked together by adjusting bolts and nuts. A horizontal tilt sensor 11 is also installed on the horizontal support plate 8. The horizontal tilt sensor 11 is used to detect whether the lower clamp 4 is level. This horizontal tilt sensor 11 is provided to ensure the horizontality of the lower clamp 4 during installation. The horizontal tilt sensor 11 can detect whether the bottom of the lower clamp 4 is level during installation. If it is not level, the tightness of the adjusting bolts in different positions can be adjusted until the horizontal tilt sensor 11 detects that the bottom is level.

[0048] It should also be noted that the horizontal moving slide 9, the first lifting slide 3, and the second lifting slide 10 in this device all adopt a classic screw drive structure to achieve horizontal or vertical movement, such as... Figure 3 As shown, taking the horizontal sliding slide 9 as an example, it includes a servo motor 901, a lead screw 902, a nut seat 903, a limiting plate 904, a guide rail 905, and a support base 906. The servo motor 901 is fixed on the support base 906. The two ends of the lead screw 902 are rotatably connected to both sides of the support base 906. The output shaft of the servo motor 901 is fixedly connected to the end of the lead screw 902. The guide rail 905 is distributed on both sides of the lead screw 902 and fixedly connected to both sides of the support base 906. The nut seat 903 is engaged with the lead screw 902, and its two sides are slidably connected to the guide rail 905. The upper end of the nut seat 903 is slidably connected to the limiting plate 904. Both sides of the limiting plate 904 are slidably connected to the guide rail 905. The support base 906 is fixedly connected. The bottom support base of the second lifting slide 10 is fixedly connected to the upper end of the nut seat 903. The connection method of the servo motor, lead screw, nut seat, limit plate and guide rail assembly in the second lifting slide 10 is the same as that of the corresponding components in the horizontal moving slide 9. The horizontal support plate 8 and the third bracket 12 are both fixedly connected to the nut seat on the second lifting slide 10. The support base of the first lifting slide 3 is fixedly connected to the base 5. The connection method of the servo motor, lead screw, nut seat, limit plate and guide rail assembly in the first lifting slide 3 is the same as that of the corresponding components in the horizontal moving slide 9. The second bracket 2 is fixedly connected to the nut seat on the first lifting slide 3.

[0049] The testing procedure for the high-temperature melt density measuring device provided by this utility model is as follows:

[0050] 1. Lower the furnace door 16 and place the crucible 18 containing the sample material in the designated position on the crucible stand 20;

[0051] 2. Raise the furnace door 16 to the bottom of the high-temperature furnace 15, start the second lifting slide 10 to raise the lower clamp 4 until it coincides with the upper clamp 14, and continue to raise it until the reading of the force sensor 6 is stable (not exceeding 10 mm). Observe whether the lower clamp 4 and the upper clamp 14 are aligned through the second industrial camera 13. If they do not meet the requirements, adjust the horizontal position of the lower clamp 4 through the horizontal moving slide 9 until the upper and lower clamps are aligned.

[0052] 3. Lower the lower clamp 4 via the second lifting slide 10 until the upper and lower clamps 14 disengage;

[0053] 4. Start the high-temperature furnace 15 to heat the sample. After holding the sample at the target temperature for a specified time, start the second lifting slide 10 again to lift the lower clamp 4 until it overlaps with the upper clamp 14. Then continue to lift the crucible seat 20 until it is suspended from the furnace door 16. At this time, the reading of the force sensor 6 is stable and unchanged. Then clear the reading of the force sensor 6 to zero.

[0054] 5. The first industrial camera on one side of the high-temperature furnace 15 records the liquid level H0 at this time;

[0055] 6. Lower the rotor 9 at a certain rate. When the reading of the force sensor 6 starts to increase, it means that the rotor 9 has come into contact with the liquid surface. Continue to lower the rotor 9 until it is 10 mm away from the bottom of the crucible 18. The first industrial camera records the liquid surface position H1 at this time. After stabilization, record the reading of the force sensor 6, and the density of the melt can be calculated.

[0056] Note: H1-H0 is the height of the liquid level rise. The inner diameter of crucible 18 is known. The immersion volume of the rotor can also be obtained through visual observation using an industrial camera to verify the measured melt density and improve measurement accuracy.

[0057] Obviously, those skilled in the art can make various modifications and variations to this technical solution without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this technical solution and their equivalents, this technical solution also intends to include these modifications and variations.

Claims

1. A high-temperature melt density measuring device, characterized in that, include: Base (5); A high-temperature furnace (15) is mounted above the base (5) via a first support (1), which is used to heat the sample to bring it into a molten state; A sample carrier assembly is used to carry the sample to be tested and to drive the sample to be tested into the furnace cavity (151) of the high-temperature furnace (15); The first lifting slide (3) is installed on the base (5), and the furnace door (16) is connected to it by the second bracket (2). The first lifting slide (3) can drive the furnace door (16) to move up and down, so that it can be separated from or abut against the bottom of the high temperature furnace (15). The lower end of the sample carrying component is supported on the furnace door (16) and can move upward to separate from the furnace door (16). The upper clamp (14) is connected to the lower end of the sample carrier assembly and the lower clamp (4) is docked with the upper clamp (14). The second lifting slide (10) is used to drive the lower clamp (4) to move up and down, so that the lower clamp (4) and the upper clamp (14) can be docked and further drive the sample carrying component to move up and get away from the furnace door (16) or to get the lower clamp (4) away from the upper clamp (14). The force sensor (6) installed below the lower clamp (4) is used to measure the force changes of the force-bearing components consisting of the lower clamp (4), the upper clamp (14), the sample bearing component, and the sample to be tested. A first industrial camera is installed on one side of the high-temperature furnace (15) to record the changes in the liquid level of the molten sample. The rotor (19) positioned above the sample carrier assembly is capable of extending into the molten sample.

2. The high-temperature melt density measuring device as described in claim 1, characterized in that, The sample carrying assembly includes a crucible holder (20) and a crucible (18) mounted on the crucible holder (20). The crucible base (20) has an inverted conical structure. A circular hole is provided on the furnace door (16). The lower end of the inverted conical structure is engaged with the circular hole and can extend to its lower end. The upper end extends into the furnace cavity (151). The bottom end of the crucible base (20) is fixedly connected to the upper clamp (14).

3. The high-temperature melt density measuring device as described in claim 2, characterized in that, The crucible holder (20) has a square groove, and the crucible (18) has a square shape, so that the crucible (18) can be locked in the square groove.

4. The high-temperature melt density measuring device as described in claim 2, characterized in that, A thermocouple (17) is also provided on one side of the crucible holder (20), and the thermocouple (17) is fixedly connected to the furnace door (16).

5. The high-temperature melt density measuring device as described in claim 1, characterized in that, The upper clamp (14) is composed of an upper connecting cylinder (142) and an upper clamping seat (141) fixedly connected. The lower clamp (4) is composed of a lower connecting cylinder (402) and a lower clamping seat (401) fixedly connected. The upper clamping seat (141) and the lower clamping seat (401) can be docked.

6. The high-temperature melt density measuring device as described in claim 5, characterized in that, The bottom surface of the upper clamping seat (141) and the top surface of the lower clamping seat (401) are respectively a concave spherical surface and a convex spherical surface, so that the upper clamping seat (141) and the lower clamping seat (401) can achieve concentric positioning when they are docked.

7. The high-temperature melt density measuring device as described in claim 1, characterized in that, The device also includes a horizontally movable slide (9). The horizontal moving slide (9) is connected to the bottom of the second lifting slide (10), and is used to drive the second lifting slide (10) to move back and forth in the horizontal direction, thereby realizing the reciprocating movement of the lower clamp (4) in the horizontal direction.

8. The high-temperature melt density measuring device as described in claim 1, characterized in that, A second industrial camera (13) is fixedly connected to the second lifting slide (10) via a third bracket (12). The height of the second industrial camera (13) matches the top of the lower clamp (4), and it is used to monitor whether the lower clamp (4) and the upper clamp (14) are aligned.

9. The high-temperature melt density measuring device as described in claim 1, characterized in that, A horizontal support plate (8) is fixedly connected to the second lifting slide (10). The force sensor (6) is installed on the horizontal support plate (8). A connecting flange (7) is provided at the bottom of the lower clamp (4) and the top of the force sensor (6). The upper and lower connecting flanges (7) are locked together by adjusting bolts and nuts.

10. The high-temperature melt density measuring device as described in claim 9, characterized in that, A horizontal tilt sensor (11) is also installed on the horizontal support plate (8), which is used to detect whether the lower clamp (4) is horizontal.

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