Borosilicate glass tube on-line annealing furnace

Abstract

The application provides a borosilicate glass tube online annealing furnace, and belongs to the technical field of annealing furnaces, which comprises a support frame, a horizontal slide and a furnace body. The top of the support frame is provided with a lifting plate which is in sliding fit with the support frame along the height direction. A stop structure is arranged between the lifting plate and the support frame. The horizontal slide is in sliding fit with the lifting plate in the horizontal direction, and the sliding direction of the horizontal slide can be close to or away from the glass tube. The top of the horizontal slide is provided with a working end close to the glass tube. The furnace body is connected to the working end of the horizontal slide. One side of the furnace body is provided with an annealing tank, and both ends of the furnace body are in communication with the annealing tank. The furnace body is provided with a heating assembly at the position of the annealing tank. Compared with the prior art, the horizontal slide can drive the furnace body to be close to or away from the glass tube in the horizontal direction. For glass tubes of different lengths, the horizontal position of the horizontal slide is adjusted so that the cutting position of the glass tube can pass through the annealing tank, thereby solving the problem that the existing annealing furnace cannot be adjusted according to the length of the glass tube.

Description

Technical Field

[0001] This application belongs to the field of annealing furnace technology, specifically relating to an online annealing furnace for borosilicate glass tubes. Background Technology

[0002] During the production of borosilicate glass tubes, one end of the tube needs to be cut. Before cutting, the cutting area is heated with a flame, and then the tube is cut using a blade with a thickness smaller than the heated area. After cutting, the cutting area needs to be annealed to reduce stress at the cutting point.

[0003] The existing annealing furnaces include gas-fired annealing furnaces and electrically heated annealing furnaces; the existing electrically heated annealing furnaces include a furnace body with a through groove in the front and back direction for the glass tube to pass through, and an electric heating wire is installed in the furnace body to achieve the purpose of heating; during the movement of the glass tube through the through groove, the glass tube is annealed.

[0004] In the prior art, the annealing furnace is directly fixed at the end of the production line, so the annealing furnace in the prior art cannot be adjusted according to the length of the glass tube. Utility Model Content

[0005] This application provides an online annealing furnace for borosilicate glass tubes, which aims to solve the problem that existing annealing furnaces cannot be adjusted according to the length of the glass tube.

[0006] To achieve the above objectives, the technical solution adopted in this application is as follows: An online annealing furnace for borosilicate glass tubes is provided, comprising: A support frame is provided with a lifting plate at the top, the lifting plate being slidably engaged with the support frame along the height direction; an anti-falling structure is provided between the lifting plate and the support frame; A horizontal carriage slides in a horizontal direction with the lifting plate, and the sliding direction of the horizontal carriage can be close to or away from the glass tube; the top of the horizontal carriage has a working end close to the glass tube. A furnace body is connected to the working end of the horizontal carriage; one side of the furnace body has an annealing groove for the end of the glass tube to pass through, and both ends of the furnace body are connected to the annealing groove; the furnace body has a heating component at the position of the annealing groove.

[0007] In one possible implementation, the furnace body is provided with heating grooves at the bottom, top and sides of the annealing groove, and each heating groove is provided with a heating component; each heating groove is connected to a mesh plate at the position where it communicates with the annealing groove, so that the heat in the heating groove can be transferred to the annealing groove.

[0008] In one possible implementation, each of the heating components includes: At least two high-temperature resistant support bricks, each of which has mounting holes; The silicon carbide heating rod is connected at both ends to the mounting holes on the corresponding high-temperature resistant support bricks.

[0009] In one possible implementation, both ends of the furnace body are connected to adjustment plates, and there are two adjustment plates at each end of the furnace body; The two adjusting plates have a space between them for the glass tube to pass through, and each adjusting plate can be adjusted in position along the height direction.

[0010] In one possible implementation, each of the adjustment plates has a strip groove arranged along the height direction, and the end of the furnace body has a threaded hole corresponding to the strip groove; The adjusting plate is provided with a bolt at the position of the strip groove, and the bolt is threadedly engaged with the threaded hole on the furnace body to abut the adjusting plate.

[0011] In one possible implementation, the horizontal carriage includes: A slide rail is connected to the top of the lifting plate; the bottom of the furnace body has a slider that slides in cooperation with the slide rail. An adjusting screw is rotatably mounted on the lifting plate, and the lifting plate has a support plate for supporting the adjusting screw; the bottom of the furnace body has an adjusting part that is threadedly engaged with the adjusting screw; The adjusting screw extends from the lifting plate at one end, and the extended end of the adjusting screw has a handle.

[0012] In one possible implementation, there are two slide rails, and the bottom of the furnace body is fixedly provided with support parts at positions corresponding to the two slide rails respectively; The adjustment part is disposed between the two support parts, and the two ends of the adjustment part are respectively connected to the corresponding support parts; the number of sliders corresponds one-to-one with the number of slide rails, and the sliders are fixed on the corresponding support parts.

[0013] In one possible implementation, the support frame is provided with a lifting hole, and the bottom of the lifting plate has a column that slides with the lifting hole; The support frame is rotatably equipped with a lifting screw, and the column has a threaded hole that is threaded to engage with the lifting screw.

[0014] In one possible implementation, the anti-fall structure includes: A housing is fixed to the top of the support frame; the housing has a through hole coaxially arranged with the lifting screw; A worm gear is rotatably disposed within the housing; the worm gear is fixedly connected to the lifting screw. A worm gear is rotatably disposed within the housing; the worm gear meshes with the worm wheel, and a handle is connected to one end of the worm gear.

[0015] In one possible implementation, the column is provided with a guide rail, and the support frame has a guide groove that slides with the guide rail; The bottom of the lifting plate is also fixed with a guide rod, and the top of the support frame has a through hole for sliding engagement of the guide rod.

[0016] This application provides an online annealing furnace for borosilicate glass tubes. Compared with the prior art, the lifting plate slides and cooperates with the support frame along the height direction. The lifting plate can be adjusted according to the height of the glass tube production line or the height of the glass tube itself, thereby changing the height of the furnace body so that the annealing tank can be aligned with the glass tube cutting position in height. The horizontal slide can drive the furnace body to move closer to or further away from the glass tube in the horizontal direction. For glass tubes of different lengths, the horizontal position of the horizontal slide can be adjusted so that the cutting position of the glass tube can pass through the annealing tank, thereby solving the problem that existing annealing furnaces cannot be adjusted according to the length of the glass tube. Attached Figure Description

[0017] Figure 1 A schematic diagram of an online annealing furnace for borosilicate glass tubes provided in an embodiment of this application; Figure 2 for Figure 1 Enlarged diagram of section A in the middle; Figure 3 A schematic diagram of the horizontal carriage portion of an online annealing furnace for borosilicate glass tubes provided in an embodiment of this application; Figure 4 for Figure 3 Enlarged diagram of section B; Figure 5 for Figure 3 Enlarged diagram of section C; Figure 6 A schematic diagram of the furnace body of an online annealing furnace for borosilicate glass tubes provided in an embodiment of this application; Figure 7 A schematic diagram of the lifting screw section of an online annealing furnace for borosilicate glass tubes provided in an embodiment of this application; Figure 8 A schematic diagram of the worm gear and worm shaft portion of an online annealing furnace for borosilicate glass tubes provided in an embodiment of this application; Figure 9 A schematic diagram of the guide rod portion of an online annealing furnace for borosilicate glass tubes provided in an embodiment of this application; Figure 10 for Figure 9Enlarged schematic diagram of section D in the middle; Figure 11 This is a schematic diagram of the connecting frame portion of an online annealing furnace for borosilicate glass tubes, provided as an embodiment of this application.

[0018] Explanation of reference numerals in the attached drawings: 1. Support frame; 11. Lifting hole; 12. Support structure; 13. Connecting frame; 14. Sliding part; 2. Horizontal slide; 21. Working end; 22. Slide rail; 23. Adjusting screw; 24. Slider; 25. Support plate; 3. Furnace body; 31. Annealing tank; 32. Heating tank; 33. Mesh plate; 34. High-temperature resistant support brick; 35. Silicon carbide heating rod; 36. Adjusting plate; 37. Strip groove; 38. Adjusting part; 39. Support part; 4. Lifting plate; 41. Column; 42. Protrusion; 43. Guide rail; 44. Guide rod; 5. Handle; 6. Lifting screw; 61. Housing; 611. Support rod; 62. Worm gear; 63. Worm. Detailed Implementation

[0019] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0020] Please refer to the following: Figures 1 to 11 This application describes an online annealing furnace for borosilicate glass tubes. The online annealing furnace for borosilicate glass tubes includes a support frame 1, a horizontal slide 2, and a furnace body 3. The top of the support frame 1 is provided with a lifting plate 4, which slides along the height direction with the support frame 1. An anti-falling structure is provided between the lifting plate 4 and the support frame 1. The horizontal slide 2 slides horizontally with the lifting plate 4, and the sliding direction of the horizontal slide 2 can be close to or away from the glass tube. The top of the horizontal slide 2 has a working end 21 close to the glass tube. The furnace body 3 is connected to the working end 21 of the horizontal slide 2. One side of the furnace body 3 has an annealing groove 31 for the end of the glass tube to pass through, and both ends of the furnace body 3 are connected to the annealing groove 31. A heating assembly is provided at the position of the annealing groove 31 in the furnace body 3.

[0021] This application provides an online annealing furnace for borosilicate glass tubes. Compared with the prior art, the lifting plate 4 slides and engages with the support frame 1 along the height direction. The lifting plate 4 can be adjusted according to the height of the glass tube production line or the height of the glass tube itself, thereby changing the height of the furnace body 3 so that the annealing tank 31 can be aligned with the glass tube cutting position in height. The horizontal slide 2 can drive the furnace body 3 to move closer to or further away from the glass tube in the horizontal direction. For glass tubes of different lengths, by adjusting the horizontal position of the horizontal slide 2, the cutting position of the glass tube can pass through the annealing tank 31, thereby solving the problem that existing annealing furnaces cannot be adjusted according to the length of the glass tube.

[0022] It should be noted that the annealing furnace in this application is located on one side of the production line, which can transport the glass tube. The side of the production line away from the annealing furnace has a baffle, and the other end of the glass tube contacts the baffle to align the other end of the glass tube. The cut end of the glass tube can pass through the annealing groove 31 of the furnace body 3 to anneal the cut position of the glass tube.

[0023] When the furnace body 3 slides to the limit position close to the production line, the furnace body 3 is at the closest position to the baffle on the production line. When the glass tube is longer than the length between the baffle and the furnace body 3, the furnace body 3 is slid outward in the horizontal direction so that the furnace body 3 can accommodate a longer glass tube, so that the cutting position of the longer glass tube can pass through the annealing groove 31.

[0024] In some embodiments, such as Figures 1 to 11 As shown, the furnace body 3 is provided with heating grooves 32 at the bottom, top and sides of the annealing groove 31, and each heating groove 32 is provided with a heating component; each heating groove 32 is connected to the annealing groove 31 at the position where it communicates with the annealing groove 31, so that the heat in the heating groove 32 can be transferred to the annealing groove 31.

[0025] Heating tanks 32 are distributed at the bottom, top and sides of annealing tank 31, which allows the heating components to heat the glass tube cutting position in annealing tank 31 from multiple directions, forming a surrounding heating environment, making the temperature distribution around the cutting position more uniform, and avoiding local overheating or insufficient temperature from affecting the annealing effect; by adjusting the height of furnace body 3, the cutting position of glass tube can be placed in the middle of the height direction of annealing tank 31.

[0026] By setting a mesh plate 33 inside the annealing tank 31, it can ensure that the heat in the heating tank 32 is smoothly transferred to the annealing tank 31 to meet the required annealing temperature; on the other hand, it can prevent the heating component from directly contacting the glass tube, preventing the glass tube from being scratched and damaged by the heating component; the mesh plate 33 does not contact the glass tube, so there is no friction between the mesh plate 33 and the glass tube; when the glass tube breaks, the mesh plate 33 can block large pieces of broken glass, reducing the large pieces of broken glass falling into the heating tank 32 below.

[0027] The annealing temperature of furnace body 3 is between 500℃ and 600℃, while the melting temperature of broken glass is 1700℃. Therefore, the broken glass will not melt after falling onto the mesh plate 33. During annealing, the height of the annealing furnace is adjusted so that the glass tube is located in the middle of furnace body 3. If the glass tube breaks, and the broken glass will not interfere with subsequent glass tubes, annealing can continue. After production is completed, the broken glass on furnace body 3 is cleaned up. If the broken glass will interfere with subsequent glass tubes, the machine needs to be stopped. Then, furnace body 3 is slid outward, and large pieces of broken glass on mesh plate 33 are removed using clamping tools. Then, furnace body 3 is moved to the annealing position to continue annealing the glass tubes.

[0028] In some embodiments, such as Figures 1 to 11 As shown, each heating component includes at least two high-temperature resistant support bricks 34 and a silicon carbide heating rod 35; each high-temperature resistant support brick 34 has a mounting hole; both ends of the silicon carbide heating rod 35 are respectively connected to the mounting holes on the corresponding high-temperature resistant support brick 34; the high-temperature resistant support bricks 34 are fixed inside the furnace body 3.

[0029] The high-temperature resistant support brick 34 can maintain structural stability in the high-temperature working environment of the annealing furnace, providing reliable support for the silicon carbide heating rod 35, preventing the silicon carbide heating rod 35 from deforming or shifting due to high temperature, and ensuring the stability of heating the annealing tank 31.

[0030] The silicon carbide heating rod 35 has the characteristics of high temperature resistance, high heating efficiency and uniform heating. Its two ends are precisely installed on the support brick through the mounting holes, and it can continuously and stably output heat, so that the temperature in the annealing tank 31 is maintained in a suitable annealing range. Compared with traditional heating elements, it can reduce the fluctuation of annealing quality caused by the instability of heating element performance and improve the reliability of annealing process.

[0031] In some embodiments, such as Figures 1 to 11 As shown, both ends of the furnace body 3 are connected to adjustment plates 36, and there are two adjustment plates 36 at each end of the furnace body 3; there is a space between the two adjustment plates 36 for the glass tube to pass through, and each adjustment plate 36 can be adjusted in the height direction.

[0032] The space formed by the two adjusting plates 36 allows the glass tube to pass through smoothly. By adjusting the position of the adjusting plates 36 along the height direction, the height of the space can be changed to accommodate glass tubes of different diameters. This avoids both excessive heat loss from the end of the annealing tank 31 due to excessive gap and damage caused by friction between the glass tube and the adjusting plates 36 due to insufficient gap.

[0033] After adjusting the position of the adjusting plate 36, the distance between the two adjusting plates 36 at the same end of the furnace body 3 is slightly larger than the diameter of the glass tube. Therefore, when the glass tube passes through the two adjusting plates 36, the glass tube will not come into contact with the two adjusting plates 36.

[0034] In some embodiments, such as Figures 1 to 11 As shown, each adjusting plate 36 has a strip groove 37 arranged along the height direction, and the end of the furnace body 3 has a threaded hole corresponding to the strip groove 37; wherein, the adjusting plate 36 is provided with a bolt at the position of the strip groove 37, and the bolt is threadedly engaged with the threaded hole on the furnace body 3 to abut the adjusting plate 36.

[0035] The groove 37 provides guidance for the height adjustment of the adjusting plate 36, ensuring that the adjusting plate 36 always moves in a straight line during the height adjustment process; the bolt and threaded hole mating structure allows the adjusting plate 36 to be fixed on the furnace body 3 simply by tightening the bolt after the adjusting plate 36 is adjusted to the appropriate position, reducing the movement of the adjusting plate 36 during the annealing process.

[0036] The adjustment method described above is simple and convenient to operate. If the diameter of the glass tube changes, the height of the adjustment plate 36 can be adjusted to match glass tubes of different diameters.

[0037] In some embodiments, such as Figures 1 to 11 As shown, the horizontal slide 2 includes a slide rail 22 and an adjusting screw 23; the slide rail 22 is connected to the top of the lifting plate 4; the bottom of the furnace body 3 has a slider 24 that slides with the slide rail 22; the adjusting screw 23 is rotatably mounted on the lifting plate 4, and the lifting plate 4 has a support plate 25 for supporting the adjusting screw 23; the bottom of the furnace body 3 has an adjusting part 38 that is threaded with the adjusting screw 23; wherein, one end of the adjusting screw 23 extends out of the lifting plate 4, and the extended end of the adjusting screw 23 has a handle 5; the position of the adjusting screw 23 and the lifting plate 4 is relatively fixed, and the adjusting screw 23 and the lifting plate 4 are rotatably engaged.

[0038] The sliding engagement between the slide rail 22 and the slider 24 provides a stable guide for the horizontal movement of the furnace body 3, ensuring that the furnace body 3 moves along a fixed trajectory as it approaches or moves away from the glass tube.

[0039] By rotating the handle 5 to drive the adjusting screw 23 to rotate, the furnace body 3 can be driven to move smoothly and accurately in the horizontal direction, and the moving distance of the furnace body 3 can be precisely controlled; the support plate 25 provides stable support for the adjusting screw 23, preventing the adjusting screw 23 from bending or shifting during rotation, and ensuring the stability of the transmission.

[0040] In some embodiments, such as Figures 1 to 11As shown, there are two slide rails 22, and the bottom of the furnace body 3 is fixedly provided with support parts 39 at the corresponding positions of the two slide rails 22; wherein, the adjustment part 38 is disposed between the two support parts 39, and the two ends of the adjustment part 38 are fixedly connected to the corresponding support parts 39 respectively; the number of sliders 24 corresponds one-to-one with the number of slide rails 22, and the sliders 24 are fixed on the corresponding support parts 39.

[0041] By setting the slider 24 at the bottom of the support plate 25 and sliding it in conjunction with the slide rail 22, the position of the furnace body 3 can be adjusted in the horizontal direction, and the distance between the bottom of the furnace body 3 and the lifting plate 4 can be raised, providing space for the setting of the adjustment part 38 and the adjustment screw 23.

[0042] The adjustment part 38 is located between the two support parts 39 and connected to the support parts 39, so that when the adjustment screw 23 drives the furnace body 3 to move through the adjustment part 38, the driving force can be evenly transmitted to the two support parts 39, thereby driving the furnace body 3 to move smoothly and improving the stability of the furnace body 3 during the movement.

[0043] In some embodiments, such as Figures 1 to 11 As shown, the support frame 1 is provided with a lifting hole 11, and the bottom of the lifting plate 4 has a column 41 that slides with the lifting hole 11; wherein, the support frame 1 is rotatably provided with a lifting screw 6, and the column 41 has a threaded hole that is threaded with the lifting screw 6; the column 41 has a protrusion 42, and the threaded hole is provided on the protrusion 42.

[0044] The sliding fit of the column 41 within the lifting hole 11 provides a reliable guide for the height adjustment of the lifting plate 4, ensuring that the lifting plate 4 moves smoothly in the vertical direction during the lifting process.

[0045] The lifting screw 6 is threaded into the threaded hole on the column 41. By rotating the lifting screw 6, the column 41 can be driven to lift the lifting plate 4. The height of the furnace body 3 can be adjusted according to the height of the glass tube production line or the height of the glass tube cutting position.

[0046] A support structure 12 is fixedly installed on the support frame 1, and the other end of the lifting screw 6 is rotatably engaged with the support structure 12.

[0047] In some embodiments, such as Figures 1 to 11 As shown, the anti-fall structure includes a housing 61, a worm gear 62, and a worm 63; the housing 61 is fixed to the top of the support frame 1; the housing 61 has a through hole coaxially arranged with the lifting screw 6; the worm gear 62 is rotatably disposed inside the housing 61; the worm gear 62 is fixedly connected to the lifting screw 6; the worm 63 is rotatably disposed inside the housing 61; the worm 63 meshes with the worm gear 62, and one end of the worm 63 is connected to a handle 5; a support rod 611 is fixedly provided at the bottom of the housing 61, which can raise the position of the housing 61 and provide rotation space for the handle 5.

[0048] The meshing structure of the worm gear 62 and the worm 63 has a self-locking characteristic. The worm gear 62 can only be driven to rotate by the worm 63, while the worm gear 62 cannot drive the worm 63 to rotate. After the lifting plate 4 is adjusted to the required height, it effectively prevents the lifting screw 6 from rotating on its own due to the weight of the furnace body 3 or equipment vibration, thereby avoiding the accidental descent of the lifting plate 4 and ensuring the stability of the position of the lifting plate 4 and the furnace body 3.

[0049] The worm wheel 62 and the lifting screw 6 are driven to rotate by rotating the handle 5 at the end of the worm 63, which improves the convenience of operation; the housing 61 can protect the worm wheel 62 and the worm 63 and reduce the dust and impurities entering the housing 61.

[0050] In some embodiments, such as Figures 1 to 11 As shown, the column 41 is provided with a guide rail 43, and the support frame 1 has a guide groove that slides with the guide rail 43; the bottom of the lifting plate 4 is also fixedly provided with a guide rod 44, and the top of the support frame 1 has a through hole for sliding engagement with the guide rod 44; the bottom of the support frame 1 is fixedly provided with a connecting frame 13, and a sliding part 14 is fixedly provided on the connecting frame 13, with a guide groove provided on the sliding part 14; the lifting hole 11 has a gap on one side of the guide rail 43 for accommodating the guide rail 43, and the other three side walls of the column 41 are in contact with the corresponding side walls of the lifting hole 11.

[0051] The guide rail 43 on the column 41 cooperates with the guide groove on the support frame 1, forming a double guiding structure with the column 41 and the lifting hole 11, which further improves the stability and accuracy of the lifting plate 4 during the height adjustment process and ensures the accuracy of the furnace body 3 during the height adjustment process.

[0052] The guide rod 44 at the bottom of the lifting plate 4 slides with the through hole on the support frame 1, providing additional guidance for the lifting of the lifting plate 4 and making the lifting plate 4 more stable during the lifting process.

[0053] The dual-guide structure also reduces the stress and wear on each guide component, extends the service life of the components, and improves the overall stability and durability of the equipment.

[0054] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An online annealing furnace for borosilicate glass tubes, characterized in that, include: A support frame is provided with a lifting plate at the top, and the lifting plate is slidably engaged with the support frame along the height direction; A fall-prevention structure is provided between the lifting plate and the support frame; A horizontal carriage slides in a horizontal direction with the lifting plate, and the sliding direction of the horizontal carriage can be close to or away from the glass tube; the top of the horizontal carriage has a working end close to the glass tube. A furnace body is connected to the working end of the horizontal carriage; one side of the furnace body has an annealing groove for the end of the glass tube to pass through, and both ends of the furnace body are connected to the annealing groove; the furnace body has a heating component at the position of the annealing groove.

2. The borosilicate glass tube online annealing furnace as described in claim 1, characterized in that, The furnace body is provided with heating grooves at the bottom, top and sides of the annealing groove, and each heating groove is provided with a heating component; each heating groove is connected to a mesh plate at the position where it communicates with the annealing groove, so that the heat in the heating groove can be transferred to the annealing groove.

3. The borosilicate glass tube online annealing furnace as described in claim 2, characterized in that, Each of the heating components includes: At least two high-temperature resistant support bricks, each of which has mounting holes; The silicon carbide heating rod is connected at both ends to the mounting holes on the corresponding high-temperature resistant support bricks.

4. The online annealing furnace for borosilicate glass tubes as described in claim 1, characterized in that, Both ends of the furnace body are connected to adjustment plates, and there are two adjustment plates at each end of the furnace body; The two adjusting plates have a space between them for the glass tube to pass through, and each adjusting plate can be adjusted in position along the height direction.

5. The online annealing furnace for borosilicate glass tubes as described in claim 4, characterized in that, Each of the adjustment plates has a strip groove arranged along the height direction, and the end of the furnace body has a threaded hole corresponding to the strip groove; The adjusting plate is provided with a bolt at the position of the strip groove, and the bolt is threadedly engaged with the threaded hole on the furnace body to abut the adjusting plate.

6. The borosilicate glass tube online annealing furnace as described in claim 1, characterized in that, The horizontal carriage includes: A slide rail is connected to the top of the lifting plate; the bottom of the furnace body has a slider that slides in cooperation with the slide rail. An adjusting screw is rotatably mounted on the lifting plate, and the lifting plate has a support plate for supporting the adjusting screw; the bottom of the furnace body has an adjusting part that is threadedly engaged with the adjusting screw; The adjusting screw extends from the lifting plate at one end, and the extended end of the adjusting screw has a handle.

7. The borosilicate glass tube online annealing furnace as described in claim 6, characterized in that, There are two slide rails, and the bottom of the furnace body is fixedly provided with support parts at the positions corresponding to the two slide rails respectively; The adjustment part is disposed between the two support parts, and the two ends of the adjustment part are respectively connected to the corresponding support parts; the number of sliders corresponds one-to-one with the number of slide rails, and the sliders are fixed on the corresponding support parts.

8. The borosilicate glass tube online annealing furnace as described in claim 1, characterized in that, The support frame is provided with lifting holes, and the bottom of the lifting plate has a column that slides with the lifting holes; The support frame is rotatably equipped with a lifting screw, and the column has a threaded hole that is threaded to engage with the lifting screw.

9. The online annealing furnace for borosilicate glass tubes as described in claim 8, characterized in that, The anti-fall structure includes: A housing is fixed to the top of the support frame; the housing has a through hole coaxially arranged with the lifting screw; A worm gear is rotatably disposed within the housing; the worm gear is fixedly connected to the lifting screw. A worm gear is rotatably disposed within the housing; the worm gear meshes with the worm wheel, and a handle is connected to one end of the worm gear.

10. The online annealing furnace for borosilicate glass tubes as described in claim 8, characterized in that, The column is provided with a guide rail, and the support frame has a guide groove that slides with the guide rail; The bottom of the lifting plate is also fixed with a guide rod, and the top of the support frame has a through hole for sliding engagement of the guide rod.

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