A quartz crucible diameter measuring device

Abstract

The invention discloses a quartz crucible diameter measuring device, comprising a base and a mounting frame, wherein a positioning platform is fixedly provided on the upper end surface of the base, a positioning fixture is fixedly provided on the positioning platform, a lifting cylinder is rotatably provided on the bottom surface of the mounting frame, a motor is fixedly provided on the upper end of the mounting frame, a measuring cross bar is fixedly provided on the piston end of the lower end of the lifting cylinder, laser rangefinders are fixedly provided on both ends of the bottom of the measuring cross bar, a light shielding component is slidably provided on the bottom of the measuring cross bar, and an adjusting cylinder for driving the light shielding component to move a position is fixedly provided on the upper end of the measuring cross bar. Compared with the prior art, the advantages of the present invention are that, by providing the light shielding component, the laser rangefinder light beam is effectively prevented from being directly reflected and scattered on the surface of the quartz crucible, the light shielding component can slide on the measuring cross bar to adapt to crucibles of different diameters, and can rotate with the measuring cross bar to measure diameters at different positions, and due to the action of the spring, the light shielding component is always in close contact with the inner and outer walls of the crucible, thereby improving measurement accuracy.

Description

Technical Field

[0001] The present invention relates to the technical field of quartz crucible detection devices, in particular to a quartz crucible diameter measuring device. Background Art

[0002] Quartz crucibles are important containers used in a wide range of applications. They are typically made of high-purity quartz and possess properties such as high-temperature and corrosion resistance. Accurately measuring the diameter of quartz crucibles is crucial for their production and use. The appropriate diameter ensures their effectiveness and reliability in specific processes. For example, certain industrial production processes require high diameter accuracy to ensure product quality and process stability.

[0003] Currently, quartz crucible diameters are often measured using calipers or other devices. However, these traditional measurement methods have numerous drawbacks. The fastest and most effective diameter measurement instrument is a laser rangefinder, but applying laser rangefinders to quartz crucible diameter measurement presents several technical challenges.

[0004] On the one hand, a laser beam directly projected onto the surface of a quartz crucible can cause scattering, refraction, and irregular reflection, resulting in non-uniform light on the return path of the laser beam, leading to inaccurate distance measurement. On the other hand, when using a laser rangefinder to measure the crucible's diameter, the laser beam must be aligned directly with the crucible's distance measurement point. That is, the laser beam's emission point must coincide with the center of the upper end of the quartz crucible, requiring precise positioning of the quartz crucible. To successfully and efficiently measure the diameter of a quartz crucible using a laser rangefinder, the present invention proposes a quartz crucible diameter measurement device to address these technical issues. Summary of the Invention

[0005] (1) Technical issues

[0006] The present invention aims to provide a quartz crucible diameter measuring device to solve the problems of light interference and precise positioning faced when using a laser rangefinder to measure the diameter of a quartz crucible.

[0007] (2) Technical content

[0008] In order to solve the above technical problems, the technical solution of the present invention is: a quartz crucible diameter measuring device, comprising a base and a mounting frame fixedly arranged on the upper end surface of the base, the upper end surface of the base is fixedly provided with a positioning platform for placing the quartz crucible, the positioning platform is fixedly provided with a positioning fixture for adjusting the position of the quartz crucible, a lifting cylinder is rotatably provided on the bottom surface of the mounting frame, a motor for driving the lifting cylinder to rotate is fixedly provided on the upper end of the mounting frame, a measuring cross bar is fixedly provided on the piston end of the lower end of the lifting cylinder, laser rangefinders are fixedly provided at both ends of the bottom of the measuring cross bar, the measuring directions of the two laser rangefinders are relative and on the same straight line, a light shielding component is slidingly provided on the bottom of the measuring cross bar, which is in close contact with the inner and outer walls of the quartz crucible and is used to prevent the laser rangefinder light beam from directly hitting the surface of the quartz crucible and causing reflection or scattering, and an adjusting cylinder for driving the light shielding component to move its position is fixedly provided on the upper end of the measuring cross bar.

[0009] Furthermore, a rectangular through slot is provided on the measuring crossbar, a sliding rod is fixed inside the rectangular through slot, a slider is slidably provided on the sliding rod, the shading assembly is fixed at the bottom of the slider, and the piston end of the adjusting cylinder is fixedly connected to the slider.

[0010] Furthermore, the shading assembly includes a rectangular block fixed to the bottom of the slider, and two left-right symmetrical sliding grooves are provided on the bottom surface of the rectangular block. A guide rod is fixed inside the sliding groove, and a slider 2 is slidably provided on the guide rod. A spring is provided on the guide rod and on the outer side of the slider 2. A shading plate that fits tightly with the inner and outer walls of the quartz crucible is fixed at the bottom of each of the two sliders. The shading plate faces the measuring beam of the laser rangefinder and is used to prevent the beam from directly hitting the surface of the quartz crucible and causing reflection or scattering.

[0011] Furthermore, the two light shielding plates are both arranged in an arc shape to match the curvature of the surface of the quartz crucible, and the lower ends of the light shielding plates are both integrally formed with a flared inclined plate.

[0012] Furthermore, the positioning fixture includes vertical plates fixed on the left and right sides of the upper end surface of the positioning platform, a clamping cylinder is fixed on the side of the vertical plate, and the piston end of the clamping cylinder extends into one end of the inner side of the vertical plate and is fixed with an L-shaped folding plate for clamping and positioning the quartz crucible, and the two clamping cylinders operate synchronously.

[0013] Furthermore, the upper end surface of the positioning platform is provided with a roller mechanism for facilitating the displacement of the quartz crucible. The roller mechanism includes a groove provided on the upper end surface of the positioning platform, and a plurality of rollers are rotatably provided inside the groove.

[0014] (3) Technical effects

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] 1. By setting up a light-shielding component, the laser rangefinder beam is effectively prevented from being reflected and scattered on the surface of the quartz crucible when it is directly hit, ensuring the uniqueness of the light during the return distance measurement, thereby greatly improving the measurement accuracy. The light-shielding component can slide on the measuring crossbar to adapt to crucibles of different diameters and can rotate with the measuring crossbar to measure diameters at different positions. Due to the action of the spring, the light-shielding component is always close to the inner and outer walls of the crucible, improving measurement accuracy.

[0017] 2. The clamping cylinder and L-shaped folding plate in the positioning fixture clamp and position the quartz crucible, ensuring its stability during measurement and guaranteeing accurate measurement with the laser rangefinder. The roller mechanism facilitates the movement of the quartz crucible on the positioning platform, facilitating adjustment of the quartz crucible's position, enabling it to quickly and accurately reach the measurement position.

[0018] 3. Two laser rangefinders are set up, and are located inside and outside the quartz crucible respectively, for measuring the inner and outer diameters of the quartz crucible, so as to calculate the thickness of the quartz crucible, thereby improving practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of a quartz crucible diameter measuring device of the present invention. Figure 1 .

[0020] Figure 2 This is a schematic diagram of the three-dimensional structure of a quartz crucible diameter measuring device of the present invention. Figure 2 .

[0021] Figure 3 This is a schematic diagram of the three-dimensional structure of a quartz crucible diameter measuring device of the present invention. Figure 3 .

[0022] Figure 4 It is a schematic diagram of the main structure of a quartz crucible diameter measuring device of the present invention.

[0023] Figure 5 It is a left-side structural schematic diagram of a quartz crucible diameter measuring device of the present invention.

[0024] Figure 6 It is a structural schematic diagram of region A of a quartz crucible diameter measuring device of the present invention.

[0025] Figure 7 It is a structural schematic diagram of region B of a quartz crucible diameter measuring device of the present invention.

[0026] As shown in the figure: 1. Base; 2. Mounting frame; 3. Positioning platform; 4. Lifting cylinder; 5. Measuring crossbar; 6. Laser rangefinder; 7. Motor; 8. Shading assembly; 9. Adjusting cylinder; 10. Rectangular through slot; 11. Slide bar; 12. Slider; 13. Rectangular block; 14. Slide groove; 15. Guide rod; 16. Slider 2; 17. Spring; 18. Shading plate; 19. Expanding inclined plate; 20. Vertical plate; 21. Clamping cylinder; 22. L-shaped folding plate; 23. Groove; 24. Roller; 25. Quartz crucible body. DETAILED DESCRIPTION

[0027] In the description of the present invention, it should be understood that the terms "up", "down", "front", "back", "left", "right", "inside", "outside", "center", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction structure and operation, and therefore cannot be understood as a limitation on the present invention.

[0028] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "provided with," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections, direct connections, indirect connections via an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0029] The present invention will be described in further detail below with reference to the accompanying drawings.

[0030] Combined with attachment Figure 1 To the attached Figure 7 A quartz crucible diameter measuring device comprises a base 1 and a mounting frame 2 fixedly arranged on the upper end surface of the base 1, a positioning platform 3 for placing the quartz crucible is fixedly provided on the upper end surface of the base 1, a positioning fixture for adjusting the position of the quartz crucible is fixedly provided on the positioning platform 3, a lifting cylinder 4 is rotatably provided on the bottom surface of the mounting frame 2, a motor 7 for driving the lifting cylinder 4 to rotate is fixedly provided on the upper end of the mounting frame 2, a measuring cross bar 5 is fixedly provided on the piston end of the lower end of the lifting cylinder 4, a laser rangefinder 6 is fixedly provided at both ends of the bottom of the measuring cross bar 5, the measuring directions of the two laser rangefinders 6 are opposite and on the same straight line, a light shielding component 8 is slidingly provided at the bottom of the measuring cross bar 5, which is tightly fitted with the inner and outer walls of the quartz crucible and is used to prevent the laser rangefinder light beam from directly hitting the surface of the quartz crucible and causing reflection and scattering, and an adjusting cylinder 9 is fixedly provided on the upper end of the measuring cross bar 5 for driving the light shielding component 8 to move its position.

[0031] The working principle of a quartz crucible diameter measuring device of the present invention is as follows: a positioning fixture fixes the quartz crucible on a positioning platform 3, and the positioning fixture operates synchronously to position the quartz crucible at the center of the positioning platform 3. The center of the circle of the upper end of the quartz crucible, the center of the positioning platform, and the light emission point of the laser rangefinder 6 located inside the quartz crucible are on the same vertical line. The lifting cylinder 4 can control the height of the measuring crossbar 5 so that the two laser rangefinders 6 are respectively aligned with the inner and outer surfaces of the quartz crucible. The shading component 8 is stuck on the upper edge of the quartz crucible and directly faces the laser rangefinder to prevent the light beam of the laser rangefinder 6 from being directly reflected and scattered on the surface of the quartz crucible, thereby ensuring the accuracy of the measurement results. The two laser rangefinders measure the inner and outer diameters of the quartz crucible respectively, and the thickness of the quartz crucible can also be obtained through calculation. After the measurement of one point is completed, the motor 7 is started to drive the lifting cylinder 4 and the measuring crossbar 5 to rotate to adjust the positions of the laser rangefinder 6 and the shading component 8 to measure the diameter and thickness at different positions.

[0032] The measuring crossbar 5 is provided with a rectangular through-slot 10, within which a slide rod 11 is fixedly mounted. A slider 12 slides slidably mounted on the slide rod 11. A light shielding assembly 8 is fixedly mounted at the bottom of the slider 12, and the piston end of the regulating cylinder 9 is fixedly connected to the slider 12. The light shielding assembly 8 comprises a rectangular block 13 fixed to the bottom of the slider 12. The bottom surface of the rectangular block 13 is provided with two symmetrical slide grooves 14. A guide rod 15 is fixedly mounted within the slide grooves 14. A slider 16 slides slidably mounted on the guide rod 15. A spring 17 is mounted on the guide rod 15 and on the outside of the slider 16. Light shields 18 are fixedly mounted at the bottom of each slider 16, tightly fitting the inner and outer walls of the quartz crucible. The light shields 18 face the measuring beam of the laser rangefinder 6 and prevent the beam from being directly reflected or scattered on the surface of the quartz crucible. Both light shields 18 are curved to match the curvature of the quartz crucible surface, and each has an integrally formed flared bevel 19 at its lower end.

[0033] In this embodiment, as a preferred technical solution, the positioning fixture includes a vertical plate 20 fixed on the left and right sides of the upper end surface of the positioning platform 3, a clamping cylinder 21 is fixed on the side of the vertical plate 20, and the piston end of the clamping cylinder 21 extends into one end of the inner side of the vertical plate 20 and is fixed with an L-shaped folding plate 22 for clamping and positioning the quartz crucible, and the two clamping cylinders 21 operate synchronously.

[0034] In this embodiment, as a preferred technical solution, the upper end surface of the positioning platform 3 is provided with a roller mechanism for facilitating the displacement of the quartz crucible. The roller mechanism includes a groove 23 provided on the upper end surface of the positioning platform 3, and a plurality of rollers 24 are rotatably provided inside the groove 23.

[0035] The working process of the quartz crucible diameter measuring device of the present invention is as follows:

[0036] 1. Place the quartz crucible on the roller mechanism on the upper end face of the positioning platform 3. The roller mechanism includes a groove 23 provided on the upper end face of the positioning platform 3. A number of rollers 24 are rotatably provided inside the groove 23 to facilitate the displacement and position adjustment of the quartz crucible. Start the positioning fixture, which includes vertical plates 20 fixed on the left and right sides of the upper end face of the positioning platform 3. The clamping cylinders 21 on the side of the vertical plates 20 push the piston end into the L-shaped folding plate 22 fixed at one end of the inner side of the vertical plates 20. The two clamping cylinders 21 operate synchronously to clamp the quartz crucible and position it at the center of the positioning platform 3, so that the three points, namely the center of the upper end of the quartz crucible, the center of the positioning platform 3, and the light emission point of the laser rangefinder 6 located inside the quartz crucible, are on the same vertical line.

[0037] 2. Activate the regulating cylinder 9, driving the slider 12 to slide on the slide bar 11 within the rectangular slot 10 on the measuring crossbar 5, so that the light shielding assembly 8 at the bottom of the slider 12 can be locked on the upper edge of the quartz crucible and aligned with the laser rangefinder 6. Activate the lifting cylinder 4, which drives the measuring crossbar 5 downward, so that the laser rangefinders 6 at both ends of the bottom of the measuring crossbar 5 are aligned with the inner and outer surfaces of the quartz crucible. After moving downward, the two light shielding plates 18 in the light shielding assembly 8 are respectively in close contact with the inner and outer walls of the upper end of the quartz crucible. Their thickness is fixed, and the light shielding plates 18 have a slight curvature or are sufficiently narrow that they can be considered to be in close contact with the inner wall of the crucible within the error range.

[0038] 3. The two laser rangefinders 6 respectively measure the inner and outer diameters of the quartz crucible. The thickness of the quartz crucible can be calculated. The distance between the beam emission point of the laser rangefinder 6 at the outer end of the measuring crossbar 5 and the beam emission point of the other laser rangefinder 6 is a fixed value H. Therefore, the data measured by the laser rangefinder located inside the quartz crucible plus the thickness of the light shielding plate 18 is the inner diameter of the quartz crucible. The fixed value H minus the data measured by the laser rangefinder located outside the quartz crucible, minus the thickness of one light shielding plate 18, is the outer diameter of the quartz crucible. The difference between the inner and outer diameters is the crucible thickness.

[0039] 4. Adjust the measuring position. After one point measurement is completed, start the motor 7. The motor 7 drives the lifting cylinder 4 and the measuring crossbar 5 to rotate, thereby adjusting the position of the laser rangefinder 6 and the light shielding component 8 to measure the diameter and thickness at different positions. It should be noted that the maximum rotation angle of the measuring crossbar 5 is 180°. The inner and outer diameters and thickness of the entire crucible upper port are measured by controlling the forward and reverse rotation of the motor.

[0040] The present invention and its embodiments are described above. This description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by this and, without departing from the purpose of the present invention, designs structures and embodiments similar to this technical solution without inventiveness, they shall fall within the scope of protection of the present invention.

Claims

1. A quartz crucible diameter measuring device, comprising a base (1) and a mounting frame (2) fixedly provided on the upper end surface of the base (1), a positioning platform (3) for placing the quartz crucible fixedly provided on the upper end surface of the base (1), a positioning fixture for adjusting the position of the quartz crucible fixedly provided on the positioning platform (3), characterized in that: The bottom surface of the mounting frame (2) is rotatably provided with a lifting cylinder (4); the upper end of the mounting frame (2) is fixedly provided with a motor (7) for driving the lifting cylinder (4) to rotate; the piston end of the lower end of the lifting cylinder (4) is fixedly provided with a measuring crossbar (5); both ends of the bottom of the measuring crossbar (5) are fixedly provided with laser rangefinders (6); the measuring directions of the two laser rangefinders (6) are opposite and on the same straight line; the bottom of the measuring crossbar (5) is slidably provided with a light shielding component (8) that is tightly fitted with the inner and outer side walls of the quartz crucible and is used to prevent the laser rangefinder light beam from being directly incident on the surface of the quartz crucible and being reflected or scattered; the upper end of the measuring crossbar (5) is fixedly provided with an adjusting cylinder (9) for driving the light shielding component (8) to move its position.

2. The quartz crucible diameter measuring device according to claim 1, characterized in that: The measuring crossbar (5) is provided with a rectangular through slot (10), a slide bar (11) is fixedly provided inside the rectangular through slot (10), a slider (12) is slidably provided on the slide bar (11), a light shielding assembly (8) is fixedly provided at the bottom of the slider (12), and a piston end of the regulating cylinder (9) is fixedly connected to the slider (12).

3. The quartz crucible diameter measuring device according to claim 2, characterized in that: The shading assembly (8) includes a rectangular block (13) fixedly arranged at the bottom of the slider (12), two symmetrical slide grooves (14) are provided on the bottom surface of the rectangular block (13), a guide rod (15) is fixedly arranged inside the slide groove (14), a slider (16) is slidably arranged on the guide rod (15), a spring (17) is provided on the guide rod (15) and on the outside of the slider (16), and a shading plate (18) tightly fitted with the inner and outer walls of the quartz crucible is fixedly arranged at the bottom of the two sliders (16), the shading plate (18) is directly facing the measuring beam of the laser rangefinder (6) and is used to prevent the beam from being directly incident on the surface of the quartz crucible and causing reflection or scattering.

4. The quartz crucible diameter measuring device according to claim 3, characterized in that: The two light shielding plates (18) are both arranged in an arc shape to match the curvature of the surface of the quartz crucible, and the lower ends of the light shielding plates (18) are both integrally formed with an expanded inclined plate (19).

5. The quartz crucible diameter measuring device according to claim 1, characterized in that: The positioning fixture comprises vertical plates (20) fixedly arranged on the left and right sides of the upper end surface of the positioning platform (3); a clamping cylinder (21) is fixedly arranged on the side of the vertical plate (20); a piston end of the clamping cylinder (21) extends into one end of the inner side of the vertical plate (20); and an L-shaped folding plate (22) for clamping and positioning the quartz crucible is fixedly arranged thereon; the two clamping cylinders (21) operate synchronously.

6. The quartz crucible diameter measuring device according to claim 1, characterized in that: The upper end surface of the positioning platform (3) is provided with a roller mechanism for facilitating the displacement of the quartz crucible. The roller mechanism comprises a groove (23) provided on the upper end surface of the positioning platform (3), and a plurality of rollers (24) are rotatably provided inside the groove (23).

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