Rapid low-temperature quartz special sintering furnace for high-performance optical element

Abstract

The invention belongs to the technical field of quartz processing, and discloses a rapid low-temperature quartz special sintering furnace for a high-performance optical element, which comprises a support frame, a camera and a sintering furnace, and also comprises a monitoring mechanism comprising a sealing cover, the upper end surface of the sealing cover is communicated with a second air pipe, one side of the second air pipe is communicated with a first ball valve and a first air pipe, and the other side of the second air pipe is communicated with a second ball valve; one side of the first ball valve communicates with a cooling box, a second valve rod is rotationally installed on the outer wall of the first ball valve, a second grooved wheel is installed on the outer wall of the second valve rod, and a parallel sensor is installed on the outer wall of the cooling box; the lifting mechanism comprises a hydraulic rod, the outer wall of the hydraulic rod communicates with a second oil pipe and a first oil pipe, the outer wall of the second oil pipe communicates with a second ball valve, a first valve rod is rotationally installed on the outer wall of the second ball valve, and a first grooved wheel is installed on the outer wall of the first valve rod; the adjusting mechanism comprises a cam, and an extrusion rod is installed on the outer wall of the cam. The problem that the problem checking range cannot be effectively narrowed due to the fact that existing equipment cannot monitor the gas concentration is solved.

Description

Technical Field

[0001] The invention relates to the technical field of quartz processing, in particular to a fast low-temperature quartz special sintering furnace for high-performance optical elements. Background Art

[0002] Optical components play a vital role in modern science and technology and are widely used in many fields such as communications, medical treatment, aerospace, and national defense. Among them, the quality of high-performance optical components directly affects the performance of related equipment and systems. As an important optical component, optical fiber occupies a core position in the field of communications. As a key raw material for optical fiber manufacturing, the quality of optical fiber preform plays a decisive role in the performance of the final optical fiber product.

[0003] The Chinese patent disclosed "An optical fiber preform processing equipment with fracture detection" with application number 202410526032.9, includes a base plate, a sintering furnace and a detection assembly, a fixed plate is arranged above the base plate, a guide rod is fixedly connected to the fixed plate, and the guide rod is fixedly connected to the base plate, a screw is rotatably connected to the fixed plate, a lifting platform is threadedly connected to the screw, and the lifting platform is slidably connected to the guide rod, a connecting shaft is rotatably connected to the lifting platform, a second gear is fixedly connected to the connecting shaft, a second rack meshing with the second gear is arranged on one side of the second gear, a third transmission rod is fixedly connected to the second rack, a slide groove is opened on the fixed plate, and a first electric push rod is fixedly connected to the fixed plate.

[0004] The device simplifies the production steps by installing a detection device on the side of the sintering furnace. However, the device cannot monitor the gas concentration when processing optical fiber preforms, which will result in a lack of relevant gas parameter information as a reference after detecting defects in the optical fiber preforms, and thus cannot effectively narrow the scope of problem investigation and make timely adjustments, ultimately leading to reduced production efficiency. In order to solve this problem, the present invention proposes a fast low-temperature quartz special sintering furnace for high-performance optical components. Summary of the invention

[0005] The purpose of the present invention is to provide a fast low-temperature quartz special sintering furnace for high-performance optical elements. The present invention solves the problem that the existing equipment cannot monitor the gas concentration and thus cannot effectively narrow the scope of problem investigation.

[0006] To achieve the above object, the present invention provides the following technical solution: a fast low-temperature quartz special sintering furnace for high-performance optical elements, comprising a support frame, a camera and a sintering furnace located on the support frame, and also comprising: The monitoring mechanism comprises a sealing cover, wherein the upper end surface of the sealing cover is connected to a second air pipe, the second air pipe is respectively connected to a first ball valve and a first air pipe on a side away from the sealing cover, the first ball valve is connected to a cooling box on a side away from the second air pipe, a second valve stem is rotatably mounted on an outer wall of the first ball valve, a second groove wheel is mounted on an outer wall of the second valve stem, and a parallel sensor is mounted on an outer wall of the cooling box; when the first ball valve is opened, part of the gas passes through the cooling box and is monitored by the parallel sensor; The lifting mechanism comprises a hydraulic rod, the outer wall of the hydraulic rod is respectively connected with a second oil pipe and a first oil pipe, the outer wall of the second oil pipe is connected with a second ball valve, the outer wall of the second ball valve is rotatably mounted with a first valve stem, and the outer wall of the first valve stem is mounted with a first groove wheel; when oil flows into the first oil pipe, the hydraulic rod extends to drive the sealing cover to descend, and when oil flows into the second oil pipe, the hydraulic rod contracts to drive the sealing cover to rise; The adjusting mechanism comprises a driving assembly and two electric telescopic rods, wherein the electric telescopic rods are symmetrically mounted on the sealing cover, the output shaft of the electric telescopic rod is mounted with a supporting ring, the upper end surface of the supporting ring is rotatably mounted with a cam, and the outer wall of the cam is symmetrically mounted with an extrusion rod; when the electric telescopic rod is extended or retracted, the cam is driven to move by the supporting ring, and the cam drives the extrusion rod to squeeze the first groove wheel or the second groove wheel, thereby controlling the opening and closing of the second ball valve or the first ball valve.

[0007] Preferably, the upper end surface of the hydraulic rod is fixedly mounted on the support frame, a second support plate is mounted on the side of the hydraulic rod away from the support frame, a plurality of first round rods are evenly mounted on the lower end surface of the second support plate, a first support plate is mounted on the lower end surface of the first round rods, and the upper end surface of the cooling box is mounted on the first support plate.

[0008] Preferably, the driving assembly includes a servo motor, the upper end face of the servo motor is fixedly mounted on the second support plate, the output shaft of the servo motor is mounted with a second round rod, a limiting rod is symmetrically mounted on the outer wall of the second round rod, and the cam is sleeved outside the second round rod and the limiting rod.

[0009] Preferably, the second round rod is located away from the servo motor and passes through the first support plate and is rotatably connected to the sealing cover.

[0010] Preferably, a plurality of limit blocks are evenly installed on the outer wall of the cam, and the limit blocks and the outer wall of the cam are sleeved with positioning plates, and the lower end surface of the positioning plate is rotatably installed on the first supporting plate.

[0011] Preferably, the first air pipe is connected to a collecting pipe on a side away from the second air pipe, and the collecting pipe is connected to a cooling box.

[0012] Preferably, the outer wall of the sintering furnace is connected to an air inlet pipe.

[0013] Preferably, the second valve stem passes through the first support plate and is rotatably connected to the first valve stem.

[0014] Preferably, the first air pipe is fixedly installed under the cooling box by means of a buckle.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention is provided with a monitoring mechanism. In the early stage, the parallel sensor continuously detects the gas concentration. When it is stable in the later stage, the second valve stem will drive the first ball valve to open and close, so that the exhaust gas can intermittently pass through the cooling box and be monitored by the parallel sensor. At this time, the exhaust gas can be more directly discharged from the collection tank from the first air pipe. Under the premise of not affecting the monitoring, it can not only reduce the monitoring time of the parallel sensor and extend its service life, but also reduce the workload of the cooling box, reduce power consumption, and achieve energy saving.

[0016] 2. The present invention is provided with a lifting mechanism and a servo motor. When the sintering of the optical fiber preform is completed, the second oil pipe works, the hydraulic rod contracts, and drives the optical fiber preform to rise. At this time, the camera performs detection. At the same time, the electric telescopic rod extends to drive the support ring to rise, and the support ring drives the cam to rise. The cam drives the first groove wheel to rotate through the extrusion rod and disengages from the second groove wheel. The first groove wheel intermittently drives the first valve stem to rotate, and the first valve stem opens and closes the second ball valve. At this time, the hydraulic rod will intermittently rise, thereby causing the optical fiber preform to intermittently rise. At the same time, the optical fiber preform is driven to rotate by the servo motor, so the camera detection can be more comprehensive.

[0017] 3. The present invention is provided with an adjustment mechanism. When the cam drives the extrusion rod to move up and down, the extrusion rod will respectively abut and engage with the first groove wheel and the second groove wheel, thereby completing the opening and closing of the second ball valve and the first ball valve, and can operate stably in harsh environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 for Figure 1 Schematic diagram from another perspective; Figure 3 for Figure 1 Another perspective diagram; Figure 4 It is a schematic diagram of a cooling box of the present invention; Figure 5 for Figure 4 The enlarged schematic diagram of point A in the middle; Figure 6 This is a schematic diagram of the upper side of the first support plate of the present invention; Figure 7 for Figure 6 The enlarged schematic diagram of point B in the middle; Figure 8 for Figure 6 Sectional view; Fig. 9 It is an exploded schematic diagram of the regulating mechanism of the present invention.

[0019] In the figure: 1, support frame; 2, first support plate; 3, cooling box; 4, opening; 5, air inlet pipe; 6, hydraulic rod; 7, first oil pipe; 8, second support plate; 9, first round rod; 10, optical fiber preform; 11, camera; 12, sintering furnace; 13, electric telescopic rod; 14, sealing cover; 15, second oil pipe; 16, parallel sensor; 17, collecting pipe; 18, first air pipe; 19, second round rod; 20, first ball valve; 21, second air pipe; 22, servo motor; 23, positioning plate; 24, second ball valve; 25, first groove wheel; 26, second groove wheel; 27, first valve stem; 28, second valve stem; 29, extrusion rod; 30, cam; 31, limit block; 32, support ring; 33, limit rod. DETAILED DESCRIPTION

[0020] In order to more clearly understand the purpose, technical solutions and advantages of the present application, the present application is described and illustrated below in conjunction with the accompanying drawings and embodiments.

[0021] See also Figures 1 to 9 The present invention provides a technical solution: a fast low-temperature quartz special sintering furnace for high-performance optical elements, comprising a support frame 1, a camera 11 and a sintering furnace 12 located on the support frame 1, and also comprising: The monitoring mechanism comprises a sealing cover 14, wherein the upper end surface of the sealing cover 14 is connected to a second air pipe 21, wherein the second air pipe 21 is respectively connected to a first ball valve 20 and a first air pipe 18 on a side away from the sealing cover 14, wherein the first ball valve 20 is connected to a cooling box 3 on a side away from the second air pipe 21, wherein a second valve stem 28 is rotatably mounted on an outer wall of the first ball valve 20, wherein a second groove wheel 26 is mounted on an outer wall of the second valve stem 28, and wherein a parallel sensor 16 is mounted on an outer wall of the cooling box 3; when the first ball valve 20 is opened, part of the gas passes through the cooling box 3 and is monitored by the parallel sensor 16 (the parallel sensor 16 comprises a chlorine sensor, a hydrogen chloride sensor and an oxygen sensor); The lifting mechanism includes a hydraulic rod 6, the outer wall of which is connected to a second oil pipe 15 and a first oil pipe 7 respectively, the outer wall of the second oil pipe 15 is connected to a second ball valve 24, the outer wall of the second ball valve 24 is rotatably mounted with a first valve stem 27, and the outer wall of the first valve stem 27 is mounted with a first groove wheel 25; when oil flows into the first oil pipe 7, the hydraulic rod 6 extends to drive the sealing cover 14 to descend, and when oil flows into the second oil pipe 15, the hydraulic rod 6 contracts to drive the sealing cover 14 to rise; The adjusting mechanism includes a driving assembly and two electric telescopic rods 13, wherein the electric telescopic rods 13 are symmetrically mounted on the sealing cover 14, and the output shaft of the electric telescopic rod 13 is mounted with a support ring 32, and a cam 30 is rotatably mounted on the upper end surface of the support ring 32, and an extrusion rod 29 is symmetrically mounted on the outer wall of the cam 30; when the electric telescopic rod 13 is extended or retracted, the cam 30 is driven to move by the support ring 32, and the cam 30 drives the extrusion rod 29 to squeeze the first groove wheel 25 or the second groove wheel 26, so as to control the opening and closing of the second ball valve 24 or the first ball valve 20.

[0022] Further, such as Figure 1 As shown, the upper end surface of the hydraulic rod 6 is fixedly mounted on the support frame 1, a second support plate 8 is mounted on the side of the hydraulic rod 6 away from the support frame 1, a plurality of first round rods 9 are evenly mounted on the lower end surface of the second support plate 8, a first support plate 2 is mounted on the lower end surface of the first round rod 9, the upper end surface of the cooling box 3 is mounted on the first support plate 2, and an opening 4 is opened on the outer wall of the support frame 1; The output shaft of the hydraulic rod 6 extends out and presses on the support frame 1 , thereby driving the second support plate 8 and the first support plate 2 to descend at the opening 4 .

[0023] Further, such as Figure 5 and Figure 8 As shown, the driving assembly includes a servo motor 22, the upper end surface of the servo motor 22 is fixedly mounted on the second support plate 8, the output shaft of the servo motor 22 is mounted with a second round rod 19, the outer wall of the second round rod 19 is symmetrically mounted with a limit rod 33, the cam 30 is sleeved outside the second round rod 19 and the limit rod 33, and the second round rod 19 is away from the servo motor 22. The side passes through the first support plate 2 and is rotatably connected to the sealing cover 14; When the servo motor 22 rotates, it drives the second round rod 19 to rotate, and the second round rod 19 drives the optical fiber preform rod 10 to rotate. At the same time, the second round rod 19 drives the cam 30 to rotate through the limiting rod 33.

[0024] Further, such as Fig. 9 As shown, a plurality of limit blocks 31 are evenly installed on the outer wall of the cam 30, and the limit blocks 31 and the outer wall of the cam 30 are sleeved with a positioning plate 23, and the lower end surface of the positioning plate 23 is rotatably installed on the first support plate 2; When the cam 30 moves, it drives the limit block 31 to move on the positioning plate 23, and drives the positioning plate 23 to rotate through the limit block 31. The positioning plate 23 intermittently positions the first groove wheel 25 and the second groove wheel 26 to prevent deviation.

[0025] Further, such as Figure 4 As shown, the first air pipe 18 is connected to a collecting pipe 17 at a side away from the second air pipe 21, and the collecting pipe 17 is connected to the cooling box 3; The exhaust gas will enter the collecting pipe 17 through the first air pipe 18 and the cooling box 3, and the exhaust gas will be diverted, thereby reducing the power consumption of the cooling box 3.

[0026] Further, such as Figure 1 As shown, the outer wall of the sintering furnace 12 is connected with an air inlet pipe 5.

[0027] Further, such as Figure 8 As shown, the second valve stem 28 passes through the first support plate 2 and is rotatably connected to the first valve stem 27 .

[0028] Further, such as Figure 4 As shown, the first air pipe 18 is fixedly installed below the cooling box 3 by means of buckles.

[0029] Further, such as Figure 8 As shown, an ultrasonic sensor is installed on the upper end surface of the first support plate 2; When the electric telescopic rod 13 needs to be extended or retracted, only when the ultrasonic sensor detects the squeezing rod 29, the electric telescopic rod 13 works, and the squeezing rod 29 completes the lifting and lowering on the side away from the first groove wheel 25 and the second groove wheel 26 to prevent damage caused by collision.

[0030] Working principle: Step 1: After the external power supply and controller are connected, the second oil pipe 15 and the first oil pipe 7 are connected to the external hydraulic oil tank, the collecting pipe 17 is connected to the waste gas collecting tank, and the air inlet pipe 5 is connected to the storage tank of the gas required for sintering the optical fiber preform rod 10.

[0031] Step 2: Install the optical fiber preform 10 on the second round rod 19 at the center of the sealing cover 14. At this time, the first oil pipe 7 is controlled to work, and the hydraulic rod 6 begins to extend. The hydraulic rod 6 drives the first support plate 2 to descend at the opening 4 on the support frame 1 through the second support plate 8 and the first round rod 9. When the optical fiber preform 10 descends into the sintering furnace 12, the sealing cover 14 seals the sintering furnace 12. At this time, the sintering furnace 12 is controlled to heat up, and the air intake pipe 5 starts to intake air.

[0032] Step 3: When the sintering furnace 12 starts to work, the servo motor 22 starts to rotate, and drives the optical fiber preform 10 to rotate through the second round rod 19, so that the sintering is more uniform. At the same time, the second round rod 19 drives the cam 30 to rotate through the limit rod 33, and the cam 30 drives the extrusion rod 29 to rotate, and the cam 30 drives the positioning plate 23 to rotate through the limit block 31. At this time, the electric telescopic rod 13 does not work, the cam 30 rotates on the support ring 32, and the extrusion rod 29 does not engage with the first groove wheel 25 and the second groove wheel 26.

[0033] Step 4: The gas in the sintering furnace 12 flows out through the second air pipe 21 and enters the cooling box 3 and the first air pipe 18. The gas cooled in the cooling box 3 is monitored by the parallel sensor 16 to prevent the parallel sensor 16 from being damaged by excessive temperature, and then discharged from the collecting pipe 17 to the collecting tank. At this time, the first air pipe 18 can reduce the workload of the cooling box 3, reduce power consumption, and achieve energy saving.

[0034] Step 5: As sintering proceeds, when the optical fiber preform 10 is sintered to the later stage, the reaction tends to be stable. At this time, the parallel sensor 16 detects that the data fluctuation is not large, and controls the electric telescopic rod 13 to contract. The electric telescopic rod 13 drives the support ring 32 to descend, and the support ring 32 drives the cam 30 to descend. At this time, the cam 30 drives the extrusion rod 29 to descend, and the extrusion rod 29 drives the second groove wheel 26 to rotate. The second groove wheel 26 drives the second valve stem 28 to rotate. The second valve stem 28 opens and closes the first ball valve 20, which enables the exhaust gas to intermittently pass through the cooling box 3 and be monitored by the parallel sensor 16. At this time, the exhaust gas can be more directly discharged from the first air pipe 18 to the collection tank. Under the premise of not affecting the monitoring, the service life of the parallel sensor 16 is extended, and the workload of the cooling box 3 can be reduced, thereby achieving energy saving; Step 6: When the optical fiber preform 10 is sintered, the second oil pipe 15 works, the hydraulic rod 6 contracts, and drives the optical fiber preform 10 to rise. At this time, the camera 11 performs detection. At the same time, the electric telescopic rod 13 extends to drive the support ring 32 to rise. The support ring 32 drives the cam 30 to rise. The cam 30 drives the first groove wheel 25 to rotate through the extrusion rod 29 and disengages from the second groove wheel 26. The first groove wheel 25 intermittently drives the first valve stem 27 to rotate. The first valve stem 27 opens and closes the second ball valve 24. At this time, the hydraulic rod 6 will intermittently rise, so that the optical fiber preform 10 intermittently rises. At the same time, the optical fiber preform 10 is driven to rotate by the servo motor 22, so that the camera 11 can detect more comprehensively. If there is a defect in the optical fiber preform 10 at this time, the gas concentration data monitored by the parallel sensor 16 can be viewed to quickly determine the root cause of the problem.

[0035] In this article, relational terms such as first and second, etc. are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0036] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A fast low-temperature quartz special sintering furnace for high-performance optical elements, comprising a support frame (1), a camera (11) and a sintering furnace (12) located on the support frame (1), characterized in that: Also includes: The monitoring mechanism comprises a sealing cover (14), the upper end surface of the sealing cover (14) is connected to a second air pipe (21), the second air pipe (21) is connected to a first ball valve (20) and a first air pipe (18) on a side away from the sealing cover (14), the first ball valve (20) is connected to a cooling box (3) on a side away from the second air pipe (21), a second valve stem (28) is rotatably mounted on an outer wall of the first ball valve (20), a second groove wheel (26) is mounted on an outer wall of the second valve stem (28), and a parallel sensor (16) is mounted on an outer wall of the cooling box (3); when the first ball valve (20) is opened, part of the gas passes through the cooling box (3) and is monitored by the parallel sensor (16); The lifting mechanism comprises a hydraulic rod (6), the outer wall of the hydraulic rod (6) is respectively connected to a second oil pipe (15) and a first oil pipe (7), the outer wall of the second oil pipe (15) is connected to a second ball valve (24), the outer wall of the second ball valve (24) is rotatably mounted with a first valve rod (27), and the outer wall of the first valve rod (27) is mounted with a first groove wheel (25); when oil flows into the first oil pipe (7), the hydraulic rod (6) extends, driving the sealing cover (14) to descend, and when oil flows into the second oil pipe (15), the hydraulic rod (6) contracts, driving the sealing cover (14) to ascend; The regulating mechanism comprises a driving assembly and two electric telescopic rods (13), wherein the electric telescopic rods (13) are symmetrically mounted on a sealing cover (14), an output shaft of the electric telescopic rod (13) is mounted with a support ring (32), an upper end surface of the support ring (32) is rotatably mounted with a cam (30), and an outer wall of the cam (30) is symmetrically mounted with an extrusion rod (29); when the electric telescopic rod (13) is extended or retracted, the support ring (32) drives the cam (30) to move, and the cam (30) drives the extrusion rod (29) to squeeze the first groove wheel (25) or the second groove wheel (26), thereby controlling the opening and closing of the second ball valve (24) or the first ball valve (20).

2. The rapid low-temperature quartz special sintering furnace for high-performance optical components according to claim 1, characterized in that: The upper end surface of the hydraulic rod (6) is fixedly mounted on the support frame (1); a second support plate (8) is mounted on the side of the hydraulic rod (6) away from the support frame (1); a plurality of first round rods (9) are evenly mounted on the lower end surface of the second support plate (8); the first support plate (2) is mounted on the lower end surface of the first round rods (9); and the upper end surface of the cooling box (3) is mounted on the first support plate (2).

3. The rapid low-temperature quartz special sintering furnace for high-performance optical components according to claim 2, characterized in that: The drive assembly comprises a servo motor (22), the upper end surface of the servo motor (22) is fixedly mounted on the second support plate (8), the output shaft of the servo motor (22) is mounted with a second round rod (19), the outer wall of the second round rod (19) is symmetrically mounted with a limit rod (33), and the cam (30) is sleeved outside the second round rod (19) and the limit rod (33).

4. The rapid low-temperature quartz special sintering furnace for high-performance optical components according to claim 3, characterized in that: The side of the second round rod (19) away from the servo motor (22) passes through the first support plate (2) and is rotatably connected to the sealing cover (14).

5. The rapid low-temperature quartz special sintering furnace for high-performance optical components according to claim 2, characterized in that: A plurality of limit blocks (31) are evenly mounted on the outer wall of the cam (30); the limit blocks (31) and the outer wall of the cam (30) are sleeved with a positioning plate (23); and the lower end surface of the positioning plate (23) is rotatably mounted on the first support plate (2).

6. The rapid low-temperature quartz special sintering furnace for high-performance optical components according to claim 1, characterized in that: The first air pipe (18) is connected to a collecting pipe (17) on a side away from the second air pipe (21), and the collecting pipe (17) is connected to a cooling box (3).

7. The rapid low-temperature quartz special sintering furnace for high-performance optical components according to claim 1, characterized in that: The outer wall of the sintering furnace (12) is connected to an air inlet pipe (5).

8. The rapid low-temperature quartz special sintering furnace for high-performance optical components according to claim 1, characterized in that: The second valve stem (28) passes through the first support plate (2) and is rotatably connected to the first valve stem (27).

9. The rapid low-temperature quartz special sintering furnace for high-performance optical components according to claim 1, characterized in that: The first air pipe (18) is fixedly mounted below the cooling box (3) by means of a buckle.

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