Quartz crucible diameter measuring device

Abstract

A quartz crucible diameter measuring device disclosed by the present invention comprises a base and a mounting frame, the upper end face of the base is fixedly provided with a positioning platform, the positioning platform is fixedly provided with a positioning clamp, the bottom surface of the mounting frame is rotatably provided with a lifting cylinder, the upper end of the mounting frame is fixedly provided with a motor, and the piston end of the lower end of the lifting cylinder is fixedly provided with a measuring cross bar. Laser range finders are fixedly arranged at the two ends of the bottom of the measuring cross rod, a shading assembly is arranged at the bottom of the measuring cross rod in a sliding mode, and an adjusting air cylinder used for driving the shading assembly to move is fixedly arranged at the upper end of the measuring cross rod. Light beams of the laser range finder are effectively prevented from directly irradiating the surface of the quartz crucible to generate reflection and scattering, the shading assembly can slide on the measuring cross rod to adapt to crucibles with different diameters and can rotate along with the measuring cross rod to measure the diameters of different positions, the shading assembly is always tightly attached to the inner wall and the outer wall of the crucible due to the action of the spring, and the measuring accuracy is improved.

Description

Technical Field

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

[0002] Quartz crucible is an important container with wide applications in many fields. It is usually made of high-purity quartz material and has the characteristics of high temperature resistance and corrosion resistance. Accurately measuring the diameter of the quartz crucible is crucial for its production and use. The appropriate diameter size ensures its effectiveness and reliability in a specific process. For example, in some specific industrial production processes, the diameter accuracy of the quartz crucible is required to be high to ensure product quality and process stability.

[0003] At present, calipers or other equipment are often used to measure the diameter of quartz crucibles. However, these traditional measurement methods have many shortcomings. In contrast, the fastest and most effective instrument for measuring diameters is the laser rangefinder, but there are some technical problems that make it unfeasible to use the laser rangefinder to measure the diameter of quartz crucibles.

[0004] On the one hand, when the laser beam is directly projected onto the surface of the quartz crucible, there will be light problems such as scattering, refraction, and irregular reflection, which will cause the laser beam to be non-unique when it returns for distance measurement, thus resulting in inaccurate distance measurement. On the other hand, when using a laser rangefinder to measure the diameter of the crucible, the laser beam needs to be directly facing the crucible distance measurement point, that is, the emission point of the laser beam must coincide with the center of the upper port of the quartz crucible, which requires the quartz crucible to be accurately positioned. In order to successfully use the laser rangefinder to simply and efficiently measure the diameter of the quartz crucible, the present invention proposes a quartz crucible diameter measuring device to solve the above technical problems. 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 a laser rangefinder is used to measure the diameter of a quartz crucible.

[0007] (II) 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, a positioning platform for placing the quartz crucible is fixedly arranged on the upper end surface of the base, a positioning fixture for adjusting the position of the quartz crucible is fixedly arranged on the positioning platform, a lifting cylinder is rotatably arranged on the bottom surface of the mounting frame, a motor for driving the lifting cylinder to rotate is fixedly arranged on the upper end of the mounting frame, a measuring cross bar is fixedly arranged on the piston end of the lower end of the lifting cylinder, laser rangefinders are fixedly arranged at both ends of the bottom of the measuring cross bar, the measuring directions of the two laser rangefinders are opposite and on the same straight line, a shading component is slidably arranged at the bottom of the measuring cross bar, which 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 directly irradiating the surface of the quartz crucible from reflection or scattering, and an adjusting cylinder for driving the shading component to move its position is fixedly arranged 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 fixedly provided inside the rectangular through slot, a sliding block is slidably provided on the sliding rod, the shading component is fixedly provided at the bottom of the sliding block, and the piston end of the adjusting cylinder is fixedly connected to the sliding block.

[0010] Furthermore, the shading assembly includes a rectangular block fixed at the bottom of the slider, two symmetrical slide grooves are provided on the bottom surface of the rectangular block, a guide rod is fixed inside the slide groove, 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, and shading plates tightly fitting with the inner and outer walls of the quartz crucible are fixed at the bottom of the two sliders 2, the shading plates face the measuring beam of the laser rangefinder and are used to prevent the beam from directly hitting the surface of the quartz crucible and causing reflection or scattering.

[0011] Furthermore, the two shading 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 shading 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 fixedly provided on the side of the vertical plate, the piston end of the clamping cylinder extends into one end of the inner side of the vertical plate and is fixedly provided with an L-shaped folding plate for clamping and positioning the quartz crucible, and the two clamping cylinders operate synchronously.

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

[0014] (III) Technical Effect

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

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

[0017] 2. The clamping cylinder and L-shaped folding plate in the positioning fixture can clamp and position the quartz crucible, ensuring the stability of the quartz crucible during the measurement process and providing guarantee for the accurate measurement of the laser rangefinder. The roller mechanism facilitates the displacement of the quartz crucible on the positioning platform and the adjustment of the position of the quartz crucible so that it can reach the measurement position quickly and accurately.

[0018] 3. Two laser rangefinders are provided, 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 The three-dimensional structure diagram of a quartz crucible diameter measuring device of the present invention is shown in FIG. Figure 1 .

[0020] Figure 2 The three-dimensional structure diagram of a quartz crucible diameter measuring device of the present invention is shown in FIG. Figure 2 .

[0021] Figure 3 The three-dimensional structure diagram of a quartz crucible diameter measuring device of the present invention is shown in FIG. Figure 3 .

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

[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 the B region 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 is necessary to understand that the directions or positional relationships indicated by the terms "upper", "lower", "front", "back", "left", "right", "inside", "outside", "center", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation structure and operation, and therefore cannot be understood as a limitation on the present invention.

[0028] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "provided with", "installed", "connected", "connected" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, it can be a mechanical connection, it can be an electrical connection, it can be a direct connection, it can be indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0030] Combined with Figure 1 To Attachment 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 arranged on the upper end surface of the base 1, a positioning fixture for adjusting the position of the quartz crucible is fixedly arranged on the positioning platform 3, a lifting cylinder 4 is rotatably arranged on the bottom surface of the mounting frame 2, a motor 7 for driving the lifting cylinder 4 to rotate is fixedly arranged on the upper end of the mounting frame 2, a measuring cross bar 5 is fixedly arranged on the piston end of the lower end of the lifting cylinder 4, laser rangefinders 6 are fixedly arranged 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 shading component 8 is slidably arranged at the bottom of the measuring cross bar 5, which 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 directly irradiating the surface of the quartz crucible for reflection and scattering, and an adjusting cylinder 9 for driving the shading component 8 to move its position is fixedly arranged on the upper end of the measuring cross bar 5.

[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, the positioning fixture runs synchronously, and the quartz crucible is positioned 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 a 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 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, so as 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 result, the two laser rangefinders respectively measure the inner and outer diameters of the quartz crucible, and the thickness of the quartz crucible can also be obtained through calculation, after one point measurement 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, so as to measure the diameter and thickness at different positions.

[0032] The measuring crossbar 5 is provided with a rectangular through slot 10, a slide bar 11 is fixed inside the rectangular through slot 10, a slider 12 is slidably arranged on the slide bar 11, a light shielding assembly 8 is fixed at the bottom of the slider 12, and the piston end of the adjusting cylinder 9 is fixedly connected to the slider 12. The light shielding assembly 8 includes a rectangular block 13 fixed at the bottom of the slider 12, two symmetrical slide grooves 14 are arranged on the bottom of the rectangular block 13, a guide rod 15 is fixed inside the slide groove 14, a slider 2 16 is slidably arranged on the guide rod 15, a spring 17 is sleeved on the guide rod 15 and on the outside of the slider 2 16, and a light shielding plate 18 tightly fitting the inner and outer walls of the quartz crucible is fixed at the bottom of the two sliders 2 16, the light shielding plate 18 is directly facing the measuring beam of the laser rangefinder 6 and is used to prevent the beam from being directly projected on the surface of the quartz crucible to cause reflection or scattering. 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 a flaring inclined plate 19.

[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 fixedly provided 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 fixedly provided 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, a roller mechanism is provided on the upper end surface of the positioning platform 3 to facilitate 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 a 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, and 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 cylinder 21 on the side of the vertical plate 20 pushes the piston end to extend into the L-shaped folding plate 22 fixed at one end of the inner side of the vertical plate 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 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. The regulating cylinder 9 is started, driving the slider 12 to slide on the slide bar 11 in the rectangular through slot 10 on the measuring crossbar 5, so that the shading component 8 at the bottom of the slider 12 can be stuck on the upper edge of the quartz crucible and face the laser rangefinder 6, and the lifting cylinder 4 is started. The lifting cylinder 4 drives the measuring crossbar 5 to descend, so that the laser rangefinders 6 at both ends of the bottom of the measuring crossbar 5 are respectively aligned with the inner and outer surfaces of the quartz crucible. After the two shading plates 18 in the shading component 8 move down, they are respectively close to the inner and outer walls of the upper port of the quartz crucible, and their thickness is a fixed value. The shading plate 18 has a slight curvature, or its width is small enough, and it can be regarded as being close to the inner wall of the crucible within the error range.

[0038] 3. The two laser rangefinders 6 respectively measure the inner and outer diameter data of the quartz crucible, and the thickness of the quartz crucible can be obtained through calculation. 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 shading 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 a shading 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 shading 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 can be measured by controlling the forward and reverse rotation of the motor.

[0040] The present invention and its embodiments are described above, and such 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 ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. A quartz crucible diameter measuring device, comprising 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 fixedly arranged on the upper end surface of the base (1), a positioning fixture for adjusting the position of the quartz crucible fixedly arranged on the positioning platform (3), characterized in that: A lifting cylinder (4) is rotatably provided on the bottom surface of the installation frame (2); a motor (7) for driving the lifting cylinder (4) to rotate is fixedly provided on the upper end of the installation frame (2); a measuring crossbar (5) is fixedly provided on the piston end of the lower end of the lifting cylinder (4); laser rangefinders (6) are fixedly provided at both ends of the bottom of the measuring crossbar (5); the measuring directions of the two laser rangefinders (6) are opposite and on the same straight line; a light shielding component (8) is slidably provided on the bottom of the measuring crossbar (5) and 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 irradiated on the surface of the quartz crucible and being reflected or scattered; and an adjusting cylinder (9) for driving the light shielding component (8) to move its position is fixedly provided on the upper end of the measuring crossbar (5).

2. A 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 component (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. A quartz crucible diameter measuring device according to claim 2, characterized in that: The shading assembly (8) comprises a rectangular block (13) fixedly arranged at the bottom of a slider (12); the bottom surface of the rectangular block (13) is provided with two symmetrical slide grooves (14); 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 sleeved on the guide rod (15) and located outside the slider (16); 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) faces the measuring beam of the laser rangefinder (6) and is used to prevent the beam from being directly projected onto the surface of the quartz crucible to cause reflection or scattering.

4. A quartz crucible diameter measuring device according to claim 3, characterized in that: The two shading 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 shading 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) fixedly arranged on the side of the vertical plate (20), an L-shaped folding plate (22) for clamping and positioning the quartz crucible fixedly arranged on one end of the clamping cylinder (21) whose piston end extends into the inner side of the vertical plate (20), and the two clamping cylinders (21) operate synchronously.

6. A 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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