Method for on-line replacement of transition roller for solar glass production

Abstract

This invention discloses an online replacement method for transition rolls used in solar glass production, comprising the following steps: establishing a specialized work team to check the status of the calender, annealing furnace, and water circulation cooling system; pre-adjusting process parameters; completing the testing and protection of the spare roll; verifying the performance of specialized disassembly and assembly tools; deploying suitable auxiliary support equipment; adjusting the equipment speed and tension to the appropriate range to maintain stable operation; removing glass residue and debris from the installation area and completing a cleaning process; disconnecting the cooling and power supply circuits; removing the old roll and supporting the glass belt with a roller support platform; moving a qualified spare roll along the ground guide track and completing the connection of the cooling and power supply circuits; adjusting the parameters of the new roll and related equipment to production standards; and resuming production after testing for stability. This method enables efficient and safe online replacement of transition rolls, shortens downtime, and ensures installation accuracy and operational stability.

Description

Technical Field

[0001] This invention belongs to the technical field of glass production equipment. Specifically, this invention relates to an online replacement method for transition rollers used in solar glass production. Background Technology

[0002] In the continuous production process of solar glass, the transition roller is a core transmission component connecting the calender and the annealing furnace. Its main function is to smoothly and continuously transport the glass strip formed by the calender to the annealing furnace for subsequent annealing treatment, ensuring the continuity and stability of the production process. Due to the highly continuous and fast-paced nature of solar glass production, the transition roller needs to operate at high speed for extended periods. Simultaneously, to prevent the transition roller from generating excessive heat during prolonged high-speed operation, which could lead to performance degradation and affect the conveying accuracy of the glass strip and the quality of the glass product, continuous water circulation cooling is necessary.

[0003] However, under the harsh conditions of long-term high-speed operation and continuous water circulation cooling, the surface of the transition roller is prone to wear, scratches, and other damage, and the ceramic layer covering the surface is also prone to cracking and peeling. Once the transition roller develops these problems, if it is not replaced in time, it will not only lead to quality defects such as surface imperfections and uneven thickness during the glass belt conveying process, seriously affecting the product quality and pass rate of solar glass; but it may also cause equipment failures such as jamming and breakage due to the performance failure of the transition roller, resulting in production interruption and significant economic losses to the enterprise.

[0004] Currently, the industry generally uses traditional offline replacement methods for replacing the aforementioned transition rollers. However, this existing replacement method has many obvious drawbacks, as follows: Firstly, the replacement process requires shutdown, resulting in significant capacity loss. Current replacement methods necessitate shutting down the production line, disassembling the transition roller's connection structure by hammering, and then completely disassembling and replacing the entire transition roller. After replacement, a lengthy de-bubbling process is required to ensure the production system is free of air bubbles that could affect glass forming quality before production can resume. This process leads to excessively long production interruptions, and each replacement operation results in substantial capacity loss. Statistics show that the combined direct capacity loss from each replacement and the indirect economic losses incurred during subsequent production resumption are considerable.

[0005] Second, the standardization of replacement operations is poor and the operation risk is high. The existing replacement methods lack a unified standardized operation process. In the actual operation process, there are problems of chaotic personnel division of labor, unclear responsible entities for each operation link, and it is easy to have situations of operation omission or repeated operation. At the same time, there is no unified standard for the selection of tools required for replacement operations, and the situation of tool mismatch with operation requirements often occurs, affecting the replacement efficiency and quality. In addition, the adjustment of process parameters involved in the replacement process depends entirely on the experience judgment of operators, lacking scientific theoretical basis and precise adjustment standards, further exacerbating the uncertainty of replacement operations.

[0006] Third, the disassembly, installation and auxiliary system handling are not standardized, which is likely to cause secondary failures. During the disassembly and installation process of the existing replacement methods, the debris cleaning in the installation area of the transition roller is not thorough, and the remaining debris is likely to mix into the glass ribbon or wear equipment components during subsequent production. The existing replacement methods often neglect to carry out standardized disconnection operations on the water circulation cooling system supporting the transition roller. During the disassembly and installation process, it is easy to cause abnormal water flow direction and excessive pressure fluctuation of the cooling water, which in turn causes the ceramic layer of the newly replaced transition roller to burst due to sudden temperature change or pressure shock. This not only directly invalidates the replaced transition roller, but also requires re-replacement operations, further increasing the replacement cost and production interruption time. Summary of the Invention

[0007] The present invention aims to at least solve one of the technical problems existing in the prior art. For this reason, the present invention provides an online replacement method for a transition roller used in solar glass production, aiming to achieve efficient and safe online replacement of the transition roller and shorten the production interruption time.

[0008] In order to achieve the above object, the technical solution adopted by the present invention is: an online replacement method for a transition roller used in solar glass production, including the following steps: S1. Preliminary preparation: Configure a specially trained operation team, check the equipment status of the calender, annealing furnace and the water circulation cooling system supporting the transition roller, pre-adjust the production process parameters, and perform functional testing and protective treatment on the spare transition roller; S2. Preparation of tools and auxiliary equipment: Equip special tools adapted to the disassembly and installation requirements of the transition roller and perform performance verification, and deploy auxiliary supporting equipment adapted to the installation position of the transition roller; S3. Parameter regulation: Adjust the running speed and tension of the calender and the annealing furnace to a preset adaptation range and maintain stable operation; S4. Material emptying and debris cleaning: Confirm that there is no glass residue and debris in the installation area of the transition roller, and perform surface dust blowing and deep cleaning in sequence; S5. Disassembly of the old transition roller: Standardize the cutting off of the water circulation cooling system and the power supply circuit of the transition roller, remove the transition roller to be replaced from the installation position by special tools and temporarily place it, and set up a lifting roller table to support the glass ribbon; S6. Installation of the new transition roller: Move the qualified spare transition roller into the installation position along the preset guide track, and connect the water circulation cooling system and the power supply circuit in sequence. The preset guide track is along the length of the ground rail. S7. Debugging and Production Resumption: Start the new transition roll operation program, gradually increase the operating parameters of the calender, annealing kiln and new transition roll to the normal production standard, and resume normal production after passing the stability test.

[0009] In step S1, the equipment status check includes: checking the temperature of the transmission gears and bearings of the calender and the clearance of the guide mechanism; the tension of the conveyor belt, the motor operating status and the stability of the control system signal transmission of the annealing kiln; the flexibility of the main water inlet valve of the transition roll, the sealing of the connection joint and the water pressure; and recording the current production parameters and cooling water flow rate.

[0010] In step S1, the process parameters are pre-adjusted by the PLC control system, which adjusts the rolling mill speed to 9m / min, the glass thickness to 3-4mm, the tension to 30N, and maintains stable operation for a preset time.

[0011] In step S1, the functional test of the spare transition roller includes forward and reverse rotation test. The single run time of the forward and reverse rotation test is 3 minutes. After the test, the water interface and plug of the spare transition roller are protected against dust.

[0012] In step S2, the special tools include a long shovel for the left push roller, a hook rake for the right pull roller, and an extended cleaning brush. The auxiliary support device is a movable operating platform with a load-bearing capacity of not less than 1000 kg and a buffer structure at the end of the track.

[0013] The long shovel is 2.0m long, has a shovel head width of 90mm, and a shovel head thickness of 11mm; the hook rake is 2.0m long, has a hook opening of 55mm, and a hook thickness of 16mm; the extended rod cleaning brush has a rod length of 1.5m and a brush head width of 25mm.

[0014] In step S3, the parameter adjustment includes: First, reduce the speed of the calender to 5.2 m / min and the speed of the annealing furnace to 9.0 m / min, and maintain stable operation for 5 minutes; then adjust the speed of the calender to 4.5 m / min ± 0.02 m / min and the speed of the annealing furnace to 7.5 m / min ± 0.02 m / min, stabilize the tension at 32 N, and maintain stable operation for 7 minutes.

[0015] In step S4, the deep cleaning uses an extended-handled cleaning brush dipped in environmentally friendly cleaning agent to scrub the track and mounting slot. After scrubbing, the track is blown with low-pressure air to ensure that the particle size of the debris is no larger than 0.08mm and that there is no cleaning agent residue.

[0016] In step S5, the water circulation cooling system is cut off by: closing the main water inlet valve, allowing it to stand for a preset time, then separating the water circuit quick connector, releasing the residual water pressure, and sealing the equipment pipeline interface and the transition roller body water circuit interface with dustproof plugs respectively. The power supply circuit cutoff includes: wearing insulated tools to pull out the aviation plug of the transition roller, fixing the plug and cable in a preset position, wherein the preset position is at least 50cm away from the transmission gear and avoids the water interface area.

[0017] In step S6, after the water circulation cooling system is connected, the water supply is first turned on at 30% of the normal water flow rate, and then gradually increased to the normal water flow rate after running for a preset time. The normal water flow rate is 15L / min, the initial water supply flow rate is 4.5L / min, it is increased to 7.5L / min after running for 5 minutes, and then returned to the normal water flow rate after running for another 5 minutes.

[0018] The online replacement method for transition rollers used in solar glass production of the present invention can achieve efficient and safe online replacement of transition rollers, shorten production interruption time, and ensure that the new transition rollers are installed with high precision and operate stably. Attached Figure Description

[0019] This manual includes the following figures, which illustrate the following: Figure 1 This is a flowchart of the online replacement method for the transition roller in solar glass production according to the present invention; Figure 2 This is a schematic diagram of the lifting roller table. Figure 3 This is the front view of the lifting roller table; Figure 4 This is a side view of the lifting roller table; Figure 5 This is a schematic diagram of the lifting mechanism of the lifting roller table; The markings in the diagram are: 1. Ground rail; 2. Directional wheel; 3. Sliding seat; 4. Support roller; 5. Lifting platform; 6. Lifting mechanism; 7. Buffer block; 8. Support seat. Detailed Implementation

[0020] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, in order to help those skilled in the art to have a more complete, accurate and in-depth understanding of the concept and technical solutions of the present invention, and to facilitate its implementation.

[0021] like Figure 1 As shown, this embodiment of the invention provides an online replacement method for transition rollers used in solar glass production, comprising the following steps: S1. Preliminary preparation: Configure a specially trained work team to check the equipment status of the calender, annealing kiln and transition roll matching water circulation cooling system, pre-adjust production process parameters, and conduct functional tests and protective treatment on the spare transition roll; S2. Preparation of tools and auxiliary equipment: Equip with special tools that are suitable for the disassembly and assembly of the transition roll and verify their performance; deploy auxiliary support equipment that is compatible with the installation position of the transition roll. S3. Parameter control: Adjust the operating speed and tension of the calender and annealing furnace to the preset suitable range to maintain stable operation; S4. Material emptying and debris removal: Confirm that there is no glass residue or debris in the transition roller installation area, and then perform surface dust blowing and deep cleaning in sequence; S5. Disassembly of the old transition roller: Disconnect the water circulation cooling system and power supply circuit of the transition roller in accordance with regulations. Use special tools to remove the transition roller to be replaced from the installation position and temporarily place it. Set up a support roller platform to provide support for the glass belt. S6. Installation of the new transition roller: Move the qualified spare transition roller into the installation position along the preset guide track, and connect the water circulation cooling system and the power supply circuit in sequence. S7. Debugging and Production Resumption: Start the new transition roll operation program, gradually increase the operating parameters of the calender, annealing kiln and new transition roll to the normal production standard, and resume normal production after passing the stability test.

[0022] Specifically, this invention pertains to the field of maintenance technology for solar glass production equipment, specifically relating to online replacement technology for transition roller assemblies. It is particularly suitable for transition roller replacement operations in large-scale solar glass production lines of 500-1500 tons, and is specifically designed for transition rollers with water-cooling systems and ceramic surface structures, adaptable to Φ160mm-Φ220mm×2600mm-4700mm models. As a core transmission component connecting the calender and annealing furnace, the transition roller in such large-scale production lines must withstand long-term high-speed operation loads, while relying on a water-cooling system for temperature control to prevent thermal deformation of the roller from affecting the glass belt conveying accuracy. The ceramic layer on its surface is a key structure for ensuring the surface quality of the glass belt and reducing frictional damage. This ceramic layer is highly sensitive to temperature fluctuations, mechanical impacts, and contamination during disassembly and assembly, and is prone to irreversible damage such as ceramic chipping and scratches due to improper operation.

[0023] Based on the specific technical scenario described above, this invention addresses the structural characteristics of transition rollers in water-cooled systems and ceramic surfaces. Through standardized operating procedures, precise parameter control, specialized tool adaptation, and targeted protective measures, it achieves efficient online replacement of transition rollers on large-scale production lines, filling a gap in existing technologies in this niche field and ensuring the continuity and stability of large-scale production. By streamlining, standardizing, and collaborative operating procedures, and regulating the disconnection and debugging steps of the water-cooled system, efficient and safe online replacement of transition rollers is achieved, shortening production downtime, mitigating the risks of ceramic layer cracking and water leakage, ensuring production continuity and product quality, and reducing replacement costs.

[0024] In step S1 above, the equipment status check includes: checking the temperature of the transmission gears and bearings of the calender and the clearance of the guide mechanism; the tension of the conveyor belt, the motor operating status and the stability of the control system signal transmission of the annealing kiln; the flexibility of the main water inlet valve of the transition roll, the sealing of the connection joint and the water pressure; and recording the current production parameters and cooling water flow rate.

[0025] In step S1 above, the process parameters are pre-adjusted by the PLC control system, which adjusts the rolling mill speed to 9m / min, the glass thickness to 3-4mm, the tension to 30N, and maintains stable operation for a preset time.

[0026] In step S1 above, the functional test of the spare transition roller includes forward and reverse rotation test. The single run time of the forward and reverse rotation test is 3 minutes. After the test, the water interface and plug of the spare transition roller are protected against dust.

[0027] Furthermore, in this embodiment of the invention, the preliminary preparation stage serves as the foundation of the online replacement method for transition rolls. Its purpose is to eliminate potential risks during the replacement operation through standardized personnel configuration, comprehensive equipment status verification, precise process parameter adaptation, and reliable pretreatment of spare rolls, thus laying the foundation for subsequent efficient and safe online replacement operations. The specific operations are as follows: 1. Staffing and Training To ensure the coordination, standardization, and safety of the replacement operation, a specialized operation team of 8-10 people was formed, with clear division of responsibilities for each position: one on-site commander was appointed to coordinate the entire operation process, issue instructions, and handle emergencies; one parameter controller was appointed to be responsible for adjusting, monitoring, and recording production process parameters; 4-6 operators were divided into a left-side push roller group and a right-side pull roller group according to the operation requirements, respectively responsible for pushing, disassembling, and pulling the transition rollers; and one safety supervisor was appointed to supervise the compliance of the operation process, the safety of the working environment, and the standardization of personnel operations throughout the process.

[0028] All operators must undergo specialized and systematic training and pass the assessment before they can be assigned to work. The training content is specifically targeted, focusing on the standardized disconnection process of the cooling water circuit for the transition roller, key points of joint sealing and protection, as well as the physical characteristics of the ceramic surface of the transition roller, damage risk points, and targeted protective measures. This ensures that operators are proficient in key operating skills and avoid problems such as water leakage, ceramic layer cracking, or scratches caused by improper operation.

[0029] 2. Equipment status check Considering the highly interconnected nature of equipment in large-scale production lines of 500-1500 tons, a comprehensive inspection of the core equipment and supporting systems related to the replacement operation is necessary to ensure there are no potential faults. The specific scope of the inspection includes: For calenders: check the meshing state of the calender's transmission gears, whether the bearing operating temperature is within the normal range, and whether the clearance of the guide mechanism meets the assembly standards; For annealing kilns: check the tension uniformity of the annealing kiln conveyor belt, the operating noise and vibration of the drive motor, and the signal transmission stability of the control system to avoid affecting the synchronization of operations due to signal interruption or delay. For water circulation cooling systems: focus on checking the flexibility and sealing performance of the main inlet valve of the water circulation cooling system, the connection sealing of the metal hose quick connector, and monitor whether the water pressure is stable at the standard value of 0.3MPa. Reference parameter recording: Synchronously record key process parameters and the flow rate of cooling water provided by the water circulation cooling system under the current production conditions (standard value is 15L / min), providing a reference basis for subsequent process parameter pre-adjustment and production resumption.

[0030] Only after a comprehensive inspection confirms that all equipment and systems are free of abnormalities can the next work phase begin.

[0031] 3. Pre-adjustment of process parameters The production line's PLC control system is used to pre-adjust production process parameters in a tiered manner to prevent sudden parameter changes from causing instability in glass belt conveying or fluctuations in product quality. The specific operation is as follows: the calender's operating speed is gradually reduced from the normal production speed of 12m / min to 9m / min, while simultaneously adjusting the glass product thickness to a suitable range of 3-4mm, and stabilizing the conveyor belt tension of the glass belt conveyor system at 30N. After adjustment, this parameter condition is maintained for 10 minutes to ensure a stable, interconnected operation of the calender, annealing furnace, and glass belt conveyor system, guaranteeing a smooth transition of the glass belt during subsequent changeovers.

[0032] 4. Pre-treatment of spare rollers To ensure the reliability and installation compatibility of the spare transition roller, rigorous functional testing and protective measures are required. (1) Functional test: Connect the spare transition roller to the workshop dedicated test interface, start the forward and reverse rotation test program of the PLC control system, set the test cycle to 3 minutes for forward rotation and 3 minutes for reverse rotation, monitor the speed stability of the transition roller in real time, and check whether there is abnormal vibration during operation. At the same time, confirm that the direction of the transition roller is consistent with the transmission requirements of the production line. After the test is qualified, disconnect the test interface. (2) Appearance and interface inspection: Carefully inspect the water interface of the spare transition roller to ensure that there is no mechanical damage, no internal blockage, and no defects such as cracks or chipping on the ceramic surface, so as to ensure that it meets the installation and use requirements; (3) Protection and storage: Dustproof covers are used to seal and protect the aviation plug and water interface of the transition roller to prevent foreign objects from entering the interface and affecting the reliability of the connection or damaging the sealing structure. Then, the spare transition roller is placed in the preset special spare position to ensure convenient access and avoid damage during storage.

[0033] In step S2 above, the special tools include a long shovel for the left push roller, a hook rake for the right pull roller, and an extended-bar cleaning brush. The auxiliary support device is a movable lifting roller platform with a load-bearing capacity of not less than 1000 kg, and a buffer structure is provided at the end of the track. The long shovel is 2.0 m long, has a shovel head width of 90 mm, and a shovel head thickness of 11 mm; the hook rake is 2.0 m long, has a hook opening of 55 mm, and a hook thickness of 16 mm; the extended-bar cleaning brush has a rod length of 1.5 m and a brush head width of 25 mm.

[0034] Furthermore, in this embodiment of the invention, the tool and auxiliary equipment preparation stage is a crucial step in ensuring the accuracy, safety, and efficiency of online transition roll replacement operations. This stage focuses on ensuring that the tools and equipment are fully matched to the operational requirements of a 500-1500 ton large-scale production line and the structural characteristics of the transition rolls through specialized adaptation selection, rigorous performance verification, and precise deployment. This avoids operational malfunctions or damage to the transition rolls caused by insufficient tool compatibility or lack of equipment stability. The specific operations are as follows: 1. Selection and inspection of specialized tools Based on the installation space dimensions of the transition roller, the stress requirements for disassembly and assembly, and the ceramic surface protection requirements, specialized tools are selected and adapted accordingly, and rigorous performance verification is conducted to ensure that the tools meet the requirements for operational intensity and precision. (1) Long shovel for pushing the left roller This tool is used for pushing force from the left side during the disassembly of the transition roller. Its specifications are designed as follows: the total length of the long shovel for pushing the left roller is set at 2.0m to fit the operating space dimensions of the transition roller installation area and to accommodate the operation requirements of different length lifting roller tables, ensuring that operators can complete the pushing action within a safe distance; the shovel head width is 90mm to ensure uniform transmission of pushing force and avoid excessive localized force that could cause the transition roller to shift; the shovel head thickness is 11mm to enhance the tool's structural rigidity. The performance verification standard is: when an axial thrust of 100N is applied to the shovel head, the shovel body shows no bending, deformation, or other structural damage, ensuring stable force application and eliminating the risk of tool failure during the pushing process.

[0035] (2) The right-side pull roller is equipped with a hook rake. This tool is used for right-side traction and displacement during the disassembly of the transition roller. The right-side pull roller hook rake is made of carbon steel and includes a rake body and hooks mounted on the rake body. The specifications of the right-side pull roller hook rake are matched to the traction operation requirements: the total length of the rake body is 2.0m, consistent with the long shovel on the left side, ensuring coordinated force application on both sides; the hook opening size is 55mm, adapted to the end force-bearing structure of the transition roller, ensuring a firm hook connection; the hook thickness is 16mm, enhancing the hook's load-bearing capacity. The performance verification standard is: when an axial tensile force of 150N is applied to the hook, there should be no loosening, detachment, or structural breakage of the hook, ensuring smooth displacement of the transition roller during traction and avoiding accidental slippage and damage.

[0036] (3) Custom-made extended-handle fiber-free cleaning brush The transition roller assembly is installed on the ground rail. The custom-designed extended-bar fiber-free cleaning brush is specifically designed for cleaning the narrow spaces in the transition roller installation area (such as ground rail gaps and mounting slots). It effectively avoids the impact of debris residue on the installation accuracy and operational stability of the transition roller. The extended-bar fiber-free cleaning brush includes a brush bar and a brush head mounted on the brush bar. The brush bar is 1.5m long, enabling it to reach into narrow spaces to complete cleaning operations. The brush head is 25mm wide, adapting to the width of the ground rail and mounting slots to ensure comprehensive cleaning coverage. The brush head is fiber-free to prevent fiber shedding and residue during cleaning, and the bristles on the brush head are tightened to ensure no shedding. The brush bar is made of high-strength rigid material, and the bar has been tested to ensure no bending or wobbling, guaranteeing operational precision during cleaning.

[0037] After all special tools have passed the above specifications and performance verification, they must be placed in the designated location according to the work process to ensure easy access and that the tool surface is free of oil and debris to avoid contaminating the ceramic surface of the transition roller or the water interface.

[0038] 2. Deployment of auxiliary equipment The auxiliary equipment uses a movable lifting roller table, whose core function is to achieve temporary load-bearing displacement of the old transition roller and precise conveying and positioning of the new transition roller. The specific deployment requirements are as follows: (1) Equipment selection and adaptation The equipment is equipped with a movable support roller platform, whose design parameters are matched with the weight, size and installation trajectory of the transition roller: the load-bearing capacity of the equipment is not less than 1000kg to meet the load requirements; the track gauge and height of the support roller platform and the installation rail of the transition roller on the production line are consistent, and the roller platform surface is accurately aligned with the axis of the transition roller to ensure that the transition roller can move smoothly along the preset trajectory during the disassembly and assembly process, and avoid jamming or deviation.

[0039] (2) Safety protection design A rubber buffer block is installed at the end of the ground rail. This buffer block has good elastic buffering performance and can effectively absorb the inertial impact force during the movement of the sliding seat 3 of the lifting roller platform, so as to avoid the rigid collision between the sliding seat 3 and the end of the ground rail after the lifting roller platform moves to the end position.

[0040] (3) Precise positioning and locking Before operation, push one of the lifting roller platforms to the designated position aligned with the installation rail of the old transition roller that is about to be removed from the production line. Ensure that the alignment accuracy between the lifting roller platform and the rail is accurate, without any misalignment or excessive gap.

[0041] After the auxiliary equipment is deployed, the mobility of the lifting roller table and the cleanliness of the ground rail surface must be checked to ensure that there are no jams or debris residues, so as to ensure the efficient implementation of subsequent disassembly and assembly operations.

[0042] In step S3 above, parameter adjustment includes: After the safety supervisor confirmed that the working environment met the standards, the parameter controller first reduced the speed of the calender to 5.2 m / min and the speed of the annealing kiln to 9.0 m / min, and maintained stable operation for 5 minutes; then the speed of the calender was adjusted to 4.5 m / min ± 0.02 m / min and the speed of the annealing kiln was adjusted to 7.5 m / min ± 0.02 m / min, and the tension was stabilized at 32 N, and maintained stable operation for 7 minutes to reduce the risk of strip breakage.

[0043] Furthermore, the precise parameter control stage is a crucial process adaptation step for achieving online replacement of the transition rolls. Its purpose is to leverage the strong interconnectivity and production cycle sensitivity of large-scale production lines (500-1500 tons) by adjusting speed and tension in a gradient and synchronized manner. This ensures that the calender, annealing furnace, and glass belt operate under low load and stability, preventing stretching, accumulation, or surface defects in the glass belt caused by sudden parameter changes. This provides a process guarantee for the smooth transport of the glass belt during subsequent transition roll assembly and disassembly. The specific operation is as follows: 1. First gradient parameter adjustment and stable operation The parameter controller smoothly reduced the operating speed of the calender from 9 m / min in the initial preparation stage to 5.2 m / min, and simultaneously adjusted the operating speed of the annealing furnace to 9.0 m / min, so as to form a reasonable speed ratio between the two and ensure that there is no stretching or accumulation of glass ribbon during the conveying process. At the same time, the conveying tension of the glass ribbon conveying system was precisely adjusted to 38N, and the tension data was collected in real time through the production line tension monitoring system to ensure that the tension value does not fluctuate after adjustment and to maintain the flatness of the glass ribbon.

[0044] After the parameters are adjusted, maintain stable operation under this condition for 5 minutes. During this period, the parameter controller continuously tracks the speed stability of the calender and annealing furnace, the changes in motor load, and the glass belt conveying status through the real-time monitoring interface of the PLC control system. Key parameters (speed, tension) are recorded every 1 minute to ensure that the equipment operates without abnormalities, the glass belt does not shift or have surface defects, and that each equipment system is fully adapted to this low-load condition.

[0045] 2. Second round of precise parameter fine-tuning and stable operation After the initial parameter stabilization operation lasted for 5 minutes, a second high-precision parameter fine-tuning was performed to further optimize the adaptability of the operating conditions and provide a safer process window for the transition roll assembly and disassembly. Specific control parameters were as follows: the calender speed was further reduced to 4.50 m / min, with the speed error strictly controlled to not exceed ±0.02 m / min; correspondingly, the annealing furnace speed was adjusted to 7.5 m / min, also controlling the speed error within ±0.02 m / min to ensure accurate speed matching between the two; simultaneously, the glass belt conveyor tension was adjusted to 32 N. This tension value ensures that the glass belt does not slack off or shift, while also reducing the risk of damage to the glass belt due to excessive tension.

[0046] After parameter fine-tuning, maintain stable operation under this condition for 7 minutes. During this period, the parameter controller continuously strengthens monitoring, focusing on whether the speed error is controlled within the preset range, whether the tension is stable without fluctuation, and whether the surface of the glass belt is flat. At the same time, maintain real-time communication with the on-site commander to promptly report the equipment's operating status. If parameter fluctuations exceed the allowable range or equipment malfunctions, immediately suspend subsequent operations, correct parameters or troubleshoot through the PLC control system, and resume the operation process only after stability is restored.

[0047] Through two rounds of gradient and precise parameter adjustments and sufficient stable operation, the production line successfully entered a low-load stable operating condition suitable for online replacement of the transition rollers. This not only ensured the continuous and stable conveying of the glass belt, but also reserved sufficient operating space for subsequent material emptying, transition roller disassembly and assembly, and other operations, effectively avoiding production interruptions or product quality problems caused by mismatched process parameters.

[0048] In step S4 above, deep cleaning is performed by using an extended-handled cleaning brush dipped in environmentally friendly cleaning agent to scrub the floor rails and mounting slots. After scrubbing, the rails are blown with low-pressure air to ensure that the particle size of the debris is no larger than 0.08mm and that there is no cleaning agent residue after cleaning.

[0049] Furthermore, the material emptying and debris removal stage is a crucial preliminary step to ensure the accuracy of online disassembly and assembly of the transition roller and to avoid secondary damage. The specific operations are as follows: 1. Material emptying confirmation The purpose of this step is to confirm that there are no material residues or debris in the area of ​​the ground rail below the lifting roller platform, eliminating the risk of interference between debris and the transition roller during disassembly and assembly. The operation procedure strictly follows the specifications of dual-person main inspection, dedicated person supplementary inspection, and joint confirmation: Two operators serve as the main inspectors, each equipped with a portable high-intensity flashlight with an illumination level of ≥500 lux, ensuring clear identification of tiny glass fragments and dust even in the complex lighting conditions of the production line. The main inspectors must focus on the area below the lifting roller table's ground rail, including the rail surface, mounting slots, and the connection gap with the directional wheel 2. They must slowly and uniformly move along the entire length of the ground rail to illuminate the area, controlling the movement speed to within 0.5 m / min to ensure complete coverage. Simultaneously, a safety supervisor uses an endoscope to conduct supplementary inspections, thoroughly examining blind spots in the flashlight illumination (such as rail corners and gaps) to ensure comprehensive supplementary inspections.

[0050] After the chief inspector and safety supervisor complete their respective inspections, they jointly verify the results. Once they confirm that there is no glass residue, debris, metal particles, or other foreign matter in the track area, they report the inspection findings to the on-site commander. Only after the on-site commander verifies and confirms that everything is correct can the material removal order be formally issued, allowing the subsequent cleaning process to begin. If foreign matter is found during inspection, the process must be immediately paused, the foreign matter removed, and the verification work restarted.

[0051] 2. Preliminary cleanup The initial cleaning aims to remove surface dust from the track area and loose debris from the confined space of the directional wheel 2, preventing dust from spreading or adhering to critical components during the deep cleaning process. The specific operations are as follows: High-pressure air at 0.5 MPa is used for purging. During purging, critical areas such as the electrical control cabinet, gearbox, and water interface of the transition roller must be strictly avoided. Temporary protection can be provided for these areas using protective shields. The purging focus is on the narrow space of the directional wheel 2, the surface of the ground rail, and the opening of the mounting slot. The purging direction is from the inside out along the length of the ground rail, ensuring that the dust is discharged away from the core components of the equipment. After purging, the operator visually inspects the surface dust removal effect. The absence of obvious dust accumulation indicates that the initial cleaning is qualified.

[0052] 3. Deep cleaning Considering the high temperature on the production line, the absorbent sponge is prone to aging and damage due to high temperature, leaving residue. Furthermore, the space in the directional wheel 2 area is confined, making direct wiping by personnel impossible. Therefore, this stage employs a combination of a customized extended-handle cleaning brush and low-pressure blowing to achieve deep cleaning in this confined space. The specific operation is as follows: Select a custom-made, extended-rod, fiber-free cleaning brush that has passed the tool preparation stage. Dip it in environmentally friendly cleaning agent and use it to clean the surface of the track, the mounting slots, and the joints of the guide wheels 2. Use a reciprocating motion for cleaning, and brush each area at least 4 times to ensure that stubborn debris is completely removed. During the cleaning process, control the force applied by the cleaning brush to ≤20N to avoid damaging the guide surface of the track or the rolling surface of the guide wheels 2.

[0053] After brushing, a second purging is performed using low-pressure air at 0.30 MPa. Low-pressure purging prevents high-pressure gas from pushing debris deeper into crevices, while ensuring that cleaning agent residue and loosened micro-debris are thoroughly removed. After purging, two acceptance tests are conducted: first, particle size testing is performed on samples of the cleaned area to ensure that residual debris particle size is ≤0.08 mm, preventing micro-debris from affecting the installation accuracy of the transition roller; second, visual inspection and wiping with test paper confirm the absence of cleaning agent residue. If both tests pass, the deep cleaning is complete; if the tests fail, brushing and purging must be repeated until the standards are met.

[0054] In step S5 above, cutting off the water circulation cooling system includes: closing the main water inlet valve, letting it stand for a preset time, separating the water circuit quick connector, releasing the residual water pressure, and sealing the equipment pipeline interface and the transition roller body water circuit interface with dustproof plugs respectively. Disconnecting the power supply circuit includes: wearing insulated tools to pull out the aviation plug of the transition roller, fixing the plug and cable in a preset position, with the preset position being at least 50cm away from the transmission gear and avoiding the water interface area.

[0055] Furthermore, the specific operations for the transition roller removal stage are as follows: 1. Water shut-off operation Close the main inlet valve of the water circulation cooling system and let it stand for 2 minutes to confirm that the water circuit is cut off; smoothly unlock and disconnect the quick connector of the metal hose connecting the transition roller, release the residual water pressure and then disassemble the hose; use rubber dust plugs to seal the equipment pipeline interface and the roller water circuit interface respectively to prevent foreign matter from entering and moisture from remaining.

[0056] 2. Power-off operation Wearing insulated gloves and using insulated pliers, smoothly unlock and horizontally pull out the HDC-HD-042 aviation plug; after tidying up the cable, use insulated cable ties to fix it to the reserved hook on the equipment bracket, ensuring that it is ≥50cm away from the transmission gear and avoids the water inlet.

[0057] 3. Assembly / disassembly tool alignment and stability test To ensure uniform force application and avoid damage to the ceramic layer during the removal of the transition rollers, a precise alignment and stability test of the specialized tools must be completed first. The operators of the left push roller group precisely align the left push roller, which has passed the tool preparation stage, with the left force-bearing surface of the old transition roller using a long shovel. The aligning area must reach more than 85% of the force-bearing surface, while ensuring that the shovel completely avoids the ceramic surface and water interface area of ​​the transition roller to prevent damage to critical structures during force application. The operators of the right pull roller group insert the hook of the hook rake into the force-bearing groove on the right side of the transition roller, with an insertion depth of ≥30mm. After tightening, the stability of the hook is tested by applying a slight pull force. Once it is confirmed that there is no risk of slippage, the test is stopped. After the tool alignment and stability test is completed, the operators on both sides report to the on-site commander that they are ready and await the removal order.

[0058] 4. Synchronous removal operation of transition rollers This step involves applying force from both sides to ensure the smooth and rapid removal of the transition roller, avoiding damage caused by forceful pushing or pulling. The specific operation is as follows: After the on-site commander issues the removal order, the operators of the left push roller group simultaneously apply a pushing force of 70N / side, and the operators of the right pull roller group simultaneously apply a pulling force of 80N / side. The forces applied on both sides must be synchronized, with a force deviation of ≤5N, to ensure that the transition roller assembly moves smoothly along the ground rail. During the removal process, one operator is assigned to observe the movement status of the transition roller assembly and the contact with the ground rail in real time. If the transition roller is found to be stuck due to residual metal particles or other debris on the ground rail, the on-site commander must be notified immediately, and the force application operation must be suspended. Subsequently, the stuck area should be purged with 0.3MPa low-pressure air to remove the debris before resuming the removal operation. It is strictly forbidden to push or pull the roller while it is stuck to avoid damaging the ceramic layer.

[0059] 5. Temporary relocation and subsequent disposal of old rollers To minimize the waiting time for new roll installation, temporary fixing should be completed first after the old roll is removed. The specific operation is as follows: Once the old transition roll assembly is completely removed from its installation position, the operators on both sides immediately stop applying force. The old roll is temporarily fixed, and the on-site commander immediately instructs the work team to switch to the installation of the new roll. The subsequent transfer of the old roll will be carried out after the installation and commissioning of the new roll is completed: a designated person will push the old roll to the designated old roll storage area and place the old roll stably on the storage rack.

[0060] In step S5 above, after the transition roller is disassembled, a support roller platform is set up to provide support for the glass ribbon being transported to the annealing furnace. The support roller platform is moved to the original position of the old transition roller to provide support for the glass ribbon above, reduce the risk of ribbon breakage, and ensure the continuity of production.

[0061] like Figures 2 to 5 As shown, the lifting roller platform includes a sliding seat 3, multiple directional wheels 2 mounted on the sliding seat 3, a lifting platform 5, a support seat 8 mounted on the lifting platform 5, and rotatable support rollers 4 mounted on the support seat 8. The support rollers 4 are used to contact the glass strip above, and the length of the support rollers 4 is greater than the width of the glass strip. The directional wheels 2 are located at the bottom of the sliding seat 3 and cooperate with the ground rail. The directional wheels 2 move along the ground rail. All directional wheels 2 are arranged in two rows, and all positioning wheels in the same row are on the same straight line parallel to a first direction. The first direction is parallel to the length direction of the ground rail and the axis of the transition roller. Multiple support rollers 4 are provided, with at least two provided. All support rollers 4 are on the same straight line parallel to a second direction. Both the first and second directions are horizontal and perpendicular to each other. The support seat 8 is fixedly mounted on the top of the lifting platform 5. The height of the lifting platform 5 is adjustable, allowing it to be raised and lowered. A lifting mechanism 6 is installed on the sliding seat 3. The top of the lifting mechanism 6 is connected to the lifting platform 5. The lifting mechanism 6 is a scissor-arm type lifting mechanism. By controlling the extension and retraction of the scissor-arm type lifting mechanism 6, the lifting platform 5 can be raised and lowered. The lifting platform 5 drives the support seat 8 and the support roller 4 to rise and fall synchronously, so as to achieve contact and separation with the glass strip above.

[0062] After the old transition roller is removed, the lifting roller platform is immediately moved to the original position of the transition roller, and then the lifting platform 5 is controlled to rise until the support roller 4 contacts the glass strip above, and the support roller 4 provides support for the glass strip above.

[0063] In step S6 above, after the water circulation cooling system is connected, the water supply is first turned on at 30% of the normal water flow rate, and then gradually increased to the normal water flow rate after running for a preset time. The normal water flow rate is 15L / min, the initial water supply flow rate is 4.5L / min, after running for 5 minutes it is increased to 7.5L / min, and after running for another 5 minutes it returns to the normal water flow rate.

[0064] Furthermore, the installation of the new roller is a crucial step in the online replacement operation, and the specific procedures are as follows: 1. Pre-inspection of new rollers This step aims to confirm that the spare transition roll is ready for installation and use, avoiding rework due to defects in the new roll itself. The operation requires a comprehensive verification of appearance, performance, and interface condition. First, the overall appearance and dimensions of the spare transition roller are checked: visual inspection shows that the roller body has no mechanical damage and the dimensional error meets the assembly tolerance requirements of the production line equipment; the ceramic surface is checked in detail to confirm that there are no defects such as cracks, chipped ceramic, or scratches, and that the ceramic layer is firmly bonded to the roller body substrate without the risk of peeling.

[0065] Subsequently, the dust covers on the spare roller's aviation plug and water interface were removed, and a special inspection of the interface was conducted. This confirmed that the interface was free of oil, metal shavings, and other debris; that the pins were free of bending, deformation, or oxidation; and that the interface sealing gaskets were intact and free of aging. The inner wall of the water interface was checked for cleanliness, free of rust and blockages; and that the interface sealing surface was smooth and free of scratches, ensuring the sealing and reliability of subsequent connections. Only after all inspection items passed could the transfer process begin. If any defect was found, the spare roller was immediately replaced, and the inspection procedure was repeated.

[0066] 2. Precise placement and seat alignment This step involves the work team working together to smoothly push the new roller along the ground rail, avoiding collision damage to the ceramic surface throughout the process, ensuring the new roller is accurately seated, and simultaneously pushing out the support roller platform along the ground rail.

[0067] 3. Waterway connection operation The operator holds the main inlet metal hose, aligns the hose quick connector with the new roller water circuit interface, and then presses the quick connector smoothly along the axis until a "click" sound is heard, confirming that the connector buckle is fully locked; after locking, gently pull the base of the connector by hand to check that the connector is not loose or has fallen off.

[0068] After the connection is completed, perform a preliminary leakage check: slightly open the main water inlet valve until the water pressure reaches 0.1MPa, maintain it for 3 minutes, visually observe the joint connection and the area around the new roller water interface to ensure there is no water droplet leakage, and after confirming that the connection is sealed reliably, close the main water inlet valve and wait for subsequent debugging.

[0069] 4. Power-on reset operation Power-on reset must strictly follow electrical safety regulations to ensure precise interface connections and secure connections. Specific procedures are as follows: Operators wearing insulated gloves hold the new roller aviation plug and precisely align it with the corresponding interface on the equipment. Push it in smoothly along the interface guide groove, avoiding rotation or prying during the process to prevent damage to the pins. When a "click" sound is heard from the latches on both sides of the plug, stop pushing it in, gently pull the base of the cable to confirm that the plug connection is secure and not loose, and the power connection is complete.

[0070] 5. Water system commissioning operation The purpose of water circuit debugging is to gradually restore the cooling water flow, avoid sudden changes in water flow rate that could cause temperature fluctuations in the roller body and lead to ceramic layer cracking, and monitor the roller temperature status at the same time. The specific operation is as follows: With the cooperation of the parameter controller and the operator, the main water inlet valve of the new roller is slowly opened, and the initial water flow rate is adjusted to 4.5L / min (30% of the normal working flow rate) through the flow regulating valve. This flow rate is maintained for 5 minutes to allow the roller temperature to gradually adapt to the cooling water flow. Then, the flow rate is increased to 7.5L / min (50% of the normal working flow rate) and continued for 5 minutes. Finally, the flow rate is restored to the normal working flow rate of 15L / min.

[0071] Throughout the commissioning process, an infrared thermometer was used to monitor the surface temperature of the rollers in real time, recording the temperature data every minute to ensure that the rollers did not overheat abnormally. At the same time, the water circuit joints and interfaces were continuously observed for any leakage. If any abnormal temperature or leakage occurred, the main water inlet valve was immediately shut off, the problem was investigated and resolved, and the commissioning process was repeated. After successful commissioning, the subsequent commissioning and production resumption phase began.

[0072] In step S7 above, the operating parameters are gradually increased as follows: first, the speed of the calender is increased to 5.8 m / min and the speed of the annealing furnace is increased to 8.0 m / min, and then the speed is stabilized for 9 minutes; then the speed is increased to 9 m / min and 11 m / min, and the speed is stabilized for 12 minutes; finally, the speed is restored to normal production parameters and then the speed is stabilized for 15 minutes, and the flatness deviation of the glass product is tested to be no greater than 0.01 mm.

[0073] Furthermore, the commissioning and production recovery phase is the final stage to verify the installation quality of the new transition rollers and ensure the smooth return of the production line to normal operating conditions. The specific operations are as follows: 1. Initial debugging This step aims to achieve initial compatibility between the new transition roller and the existing production line equipment. Low-speed operation is used to identify potential installation and connection issues. Specific operating procedures are as follows: The parameter controller initiates the new transition roller operation program via the PLC control system. The core control requirement is to ensure that the speed of the new transition roller is synchronized with that of the calender to avoid uneven force on the glass belt conveyor due to speed differences. Initially, the starting speed of the new transition roller is set to 2.0 m / min, and then gradually increased in increments of 0.8-1.0 m / min every 2 minutes until the speed of the new transition roller is synchronously increased to 4.40 m / min. During this process, the calender speed is maintained at 4.50 m / min and the annealing furnace speed is maintained at 7.50 m / min, and this synchronized operation is maintained for 12 minutes.

[0074] During commissioning, a dedicated person is responsible for monitoring multiple parameters: The production line speed monitoring system collects real-time rotational speed data for the calender, annealing kiln, and new transition rolls, ensuring the speed error is controlled within ±0.03 m / min; the water pressure and flow rate monitoring instrument tracks the cooling water circuit status in real-time, confirming that the water pressure is stable at 0.3 MPa and the flow rate is stable at 15 L / min, with no pressure fluctuations or flow rate decreases; simultaneously, operators visually observe the operation of the new transition rolls, confirming no abnormal vibrations or noises, and that the glass belt is conveyed smoothly without deviation. If any parameter is found to exceed the preset range or the equipment operates abnormally, commissioning is immediately suspended, the problem is investigated and resolved, and the initial commissioning process is restarted.

[0075] 2. Parameter gradient recovery This step involves gradually increasing production parameters to adapt the production line to normal production load, thus avoiding equipment shocks or product quality defects caused by sudden parameter changes. The specific operation is as follows: After initial debugging is successful, the process enters the parameter gradient recovery phase, which is divided into three gradients. Each gradient must maintain stable operation to ensure the compatibility of the equipment and materials. First gradient: The parameter controller increases the speed of the calender to 5.8 m / min and simultaneously increases the speed of the annealing furnace to 8.0 m / min. The speed of the new transition roll is adjusted synchronously with the calender. The operation is maintained under this condition for 9 minutes. During this period, the tension and speed are monitored and there are no fluctuations. No new defects are found on the surface of the glass ribbon. Second gradient: Further increase the speed of the calender to 9m / min, the speed of the annealing furnace to 11m / min, and the speed of the new transition roll to be adapted synchronously, maintain stable operation for 12 minutes, and focus on monitoring the equipment motor load, the operating status of the transmission system and the uniformity of glass ribbon thickness. The third phase involves restoring the production line parameters to normal production standards: a rolling mill speed of 12 m / min, a glass thickness of 0.2 mm, and an annealing furnace speed of 15 m / min. The new transition roll speed is synchronized with the normal production rhythm, and this condition is maintained for 15 minutes. During this stage, sampling inspections of the glass products are required to ensure that they meet production quality requirements.

[0076] 3. Acceptance and withdrawal of personnel This step aims to comprehensively verify the quality of the online changeover operation and confirm that the production line is capable of long-term stable operation. The specific acceptance and withdrawal procedures are as follows: Thirty minutes after the production line resumed normal production, it was confirmed that the new roller was running stably, there was no ceramic cracking on the ceramic surface, and there was no leakage in the cooling water circuit. The "Replacement Acceptance Report" was signed, and the work team withdrew.

[0077] In this embodiment, the entire online replacement operation of the transition roller for solar glass production takes approximately 45 minutes. Compared to the traditional offline replacement method, production interruption time is reduced by 75%, significantly reducing capacity loss. After the new transition roller is put into use, it runs continuously for 24 hours without any malfunctions, the cooling water circuit remains leak-free, and the ceramic surface remains intact without any damage such as ceramic chipping or scratches. Practice has proven that the online replacement method of this invention can achieve efficient, safe, low-loss, and low-cost maintenance of the transition roller, and is fully adaptable to the continuous production needs of large-scale solar glass production lines of 500-1500 tons.

[0078] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution; or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

Claims

1. An online replacement method for transition rollers used in solar glass production, characterized in that, Includes the following steps: S1. Preliminary preparation: Check the equipment status of the calender, annealing kiln and transition roll matching water circulation cooling system, pre-adjust production process parameters, and conduct functional tests and protective treatment on the spare transition rolls. S2. Preparation of tools and auxiliary equipment: Equip with special tools that are suitable for the disassembly and assembly of the transition roller, and deploy auxiliary support equipment that is compatible with the installation position of the transition roller; S3. Parameter control: Adjust the operating speed and tension of the calender and annealing furnace to the preset suitable range to maintain stable operation; S4. Material emptying and debris removal: Confirm that there is no glass residue or debris in the transition roller installation area, and then perform surface dust blowing and deep cleaning in sequence; S5. Disassembly of the old transition roller: Disconnect the water circulation cooling system and power supply circuit of the transition roller in accordance with regulations, remove the transition roller to be replaced from the installation position using special tools, and set up a lifting roller platform to provide support for the glass belt; S6. Installation of the new transition roller: Move the qualified spare transition roller into the installation position along the preset guide track, and connect the water circulation cooling system and the power supply circuit in sequence. S7. Debugging and Production Resumption: Start the new transition roll operation program, gradually increase the operating parameters of the calender, annealing kiln and new transition roll to the normal production standard, and resume normal production after passing the stability test.

2. The online replacement method for the transition roller in solar glass production according to claim 1, characterized in that, In step S1, the equipment status check includes: checking the temperature of the transmission gears and bearings of the calender and the clearance of the guide mechanism; the tension of the conveyor belt, the motor operating status and the stability of the control system signal transmission of the annealing kiln; the flexibility of the main water inlet valve of the transition roll, the sealing of the connection joint and the water pressure; and recording the current production parameters and cooling water flow rate.

3. The online replacement method for the transition roller in solar glass production according to claim 1, characterized in that, In step S1, the process parameters are pre-adjusted by the PLC control system, which adjusts the rolling mill speed to 9m / min, the glass thickness to 3-4mm, the tension to 30N, and maintains stable operation for a preset time.

4. The online replacement method for the transition roller in solar glass production according to any one of claims 1 to 3, characterized in that, In step S1, the functional test of the spare transition roller includes forward and reverse rotation test. The single run time of the forward and reverse rotation test is 3 minutes. After the test, the water interface and plug of the spare transition roller are protected against dust.

5. The online replacement method for the transition roller in solar glass production according to any one of claims 1 to 3, characterized in that, In step S2, the special tools include a long shovel for the left push roller, a hook rake for the right pull roller, and an extended cleaning brush. The auxiliary support device is a movable operating platform with a load-bearing capacity of not less than 1000 kg and a buffer structure at the end of the track.

6. The online replacement method for the transition roller in solar glass production according to claim 5, characterized in that, The long shovel is 2.0m long, has a shovel head width of 90mm, and a shovel head thickness of 11mm; the hook rake is 2.0m long, has a hook opening of 55mm, and a hook thickness of 16mm; the extended rod cleaning brush has a rod length of 1.5m and a brush head width of 25mm.

7. The online replacement method for the transition roller in solar glass production according to any one of claims 1 to 6, characterized in that, In step S3, the parameter adjustment includes: First, reduce the speed of the calender to 5.2 m / min and the speed of the annealing furnace to 9.0 m / min, and maintain stable operation for 5 minutes; then adjust the speed of the calender to 4.5 m / min ± 0.02 m / min and the speed of the annealing furnace to 7.5 m / min ± 0.02 m / min, stabilize the tension at 32 N, and maintain stable operation for 7 minutes.

8. The online replacement method for the transition roller in solar glass production according to any one of claims 1 to 6, characterized in that, In step S4, the deep cleaning involves using an extended-handled cleaning brush dipped in environmentally friendly cleaning agent to scrub the track, followed by blowing with low-pressure air.

9. The online replacement method for transition rollers used in solar glass production according to any one of claims 1 to 6, characterized in that, In step S5, the water circulation cooling system is cut off by: closing the main water inlet valve, allowing it to stand for a preset time, then separating the water circuit quick connector, releasing the residual water pressure, and sealing the equipment pipeline interface and the transition roller body water circuit interface with dustproof plugs respectively. The power supply circuit cutoff includes: wearing insulated tools to pull out the aviation plug of the transition roller, fixing the plug and cable in a preset position, wherein the preset position is at least 50cm away from the transmission gear and avoids the water interface area.

10. The online replacement method for the transition roller in solar glass production according to any one of claims 1 to 6, characterized in that, In step S6, after the water circulation cooling system is connected, the water supply is first turned on at 30% of the normal water flow rate, and then gradually increased to the normal water flow rate after running for a preset time. The normal water flow rate is 15 L / min, the initial water supply flow rate is 4.5 L / min, it is increased to 7.5 L / min after running for 5 minutes, and then returned to the normal water flow rate after running for another 5 minutes.

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