A device for online detection and polishing of annealing rollers

Abstract

The present invention discloses a device for online inspection and polishing of annealing rollers, comprising: a slide rail mounted below the annealing roller; a water-cooled base plate slidably mounted on top of the slide rail; and a double-rod cylinder mounted on top of the water-cooled base plate. A U-shaped fastener is fixedly mounted on the output end of the double-rod cylinder, and a polishing block is tightly placed within the open end of the U-shaped fastener. The polishing block is used to polish the annealing roller. The present invention provides a device for online inspection and polishing of annealing rollers. The device detects and determines whether there is foreign matter on the annealing roller through pressure changes of a pressure sensor, and then polishes the foreign matter in a targeted manner using the polishing block. While polishing, other pressure sensors simultaneously detect the polishing effect.

Description

Technical Field

[0001] The invention belongs to the technical field of glass substrate processing and manufacturing, and in particular relates to a device for online detection and polishing of annealing rollers. Background Art

[0002] The annealing lehr is one of the three major thermal equipment in a float glass production line. It is the final stop in the hot-end process of glass manufacturing and is crucial to the overall production success of the hot-end. For float glass, the annealing rollers are the carriers that transport the glass through the annealing lehr. Foreign matter on the rollers can scratch the glass or cause micro-defects on the surface.

[0003] Liquid tin plays an indispensable role in the float glass forming process. When the glass sheet leaves the molten tin, it will be contaminated with a certain amount of tin. While some of this tin is carried away by the transition rollers as it passes through the annealing lehr, some of it still enters the annealing lehr. This tin, upon contact with air in the high-temperature zone of the annealing lehr, is easily oxidized into SnO and SnO2. Over extended periods of operation, the mixture of tin, SnO, and SnO2 adhering to the annealing rollers accumulates and hardens, affecting the quality of the glass.

[0004] For float TFT glass, which has very stringent quality requirements, any defects larger than 100 microns, deformations, or severe streaks will affect the visual quality of the display. Therefore, the accumulation of substances on these annealing rollers is fatal to float TFT glass.

[0005] Ordinary float glass contains alkali metal ions, and their main method of dealing with this enrichment is to spray SO2. SO2 reacts with Na in the glass. + The reaction generates Na2SO4, which forms a protective film on the glass surface, reducing the impact of tin and tin oxide adhering to the annealing rollers on the glass. However, float liquid crystal display glass does not contain alkali metal ions. Annealing rollers with foreign matter can only be replaced with new rollers. After the rollers have cooled, they must be manually polished and cleaned based on experience. However, this operation is not only time-consuming and labor-intensive, but the rollers may also be damaged by rapid cooling and heating. It also disrupts the annealing lehr's process and cannot be restored in a short period of time, often resulting in large amounts of glass being discarded. Furthermore, when manually polishing annealing rollers, the judgment of whether the rollers have been polished properly is mainly based on whether the rollers are smooth by hand. This makes it impossible to quantify the polishing effect. The judgment results obtained by people with different tactile sensitivities may vary greatly, lack consistency, and have poor repeatability, which is not conducive to evaluating the polishing effect. Summary of the Invention

[0006] The purpose of the present invention is to overcome the above problems existing in the prior art and provide a device for online detection and grinding of annealing rollers. The device detects and determines whether there are foreign objects on the annealing rollers through the pressure changes of the pressure sensor, and grinds the foreign objects in a targeted manner through the grinding block. During the grinding process, other pressure sensors will synchronously detect the grinding effect.

[0007] In order to achieve the above technical objectives and the above technical effects, the present invention is implemented through the following technical solutions:

[0008] A device for online detection and grinding of annealing rollers, comprising:

[0009] A slide rail, the slide rail being installed below the annealing roller;

[0010] A water-cooling base plate, the water-cooling base plate being slidably mounted on the top of the slide rail;

[0011] A double-rod cylinder, the double-rod cylinder being mounted on the top of the water-cooled base plate, the output end of the double-rod cylinder being fixedly mounted with a U-shaped fastener, the open end of the U-shaped fastener being tightly fitted with a grinding block, the grinding block being used for grinding the annealing roller;

[0012] A pressure detection mechanism, comprising a plurality of lifting cylinders, wherein the output ends of the plurality of lifting cylinders are fixedly mounted with pressure sensors, and the signal input ends of the plurality of pressure sensors are all provided with probes;

[0013] A controller, the controller being used to control the double-rod cylinder and the pressure sensor and to collect relevant data information of the double-rod cylinder and the pressure sensor;

[0014] A control system, which is used to aggregate and analyze relevant data information collected by the controller and issue instructions to the controller based on the analysis results;

[0015] A threading crawler, which is used for storing lines;

[0016] A driving mechanism is used to drive the water-cooling base plate to slide on the slide rail.

[0017] Furthermore, an arc-shaped grinding groove is provided on the top surface of the grinding block, and the arc-shaped grinding groove can be closely fitted with the exterior of the annealing roller.

[0018] Furthermore, the bottom of the grinding block is fixed in the open end of the U-shaped fastener by means of bolts.

[0019] Furthermore, the material of the grinding block includes one of oilstone, white graphite or graphite.

[0020] Furthermore, one end of the probe away from the pressure sensor is an arc-shaped surface, which is used to fit tightly with the outside of the annealing roller.

[0021] Furthermore, the angle between the lifting cylinder and the water-cooling base plate is 60-90°.

[0022] Furthermore, a guide rod is fixedly installed on the side of the water-cooled base plate, a guide wheel is installed on the other end of the guide rod, and the threading track is wound around the guide wheel.

[0023] Furthermore, a water-cooling cover is fixedly mounted on the top surface of the water-cooling base plate, and a through-hole is opened on the top surface of the water-cooling cover so as to match the double-rod cylinder and the lifting cylinder. The outer shells of the double-rod cylinder and the lifting cylinder are both fixed in the through-holes by a sealed connection method.

[0024] A mounting area is formed between the water-cooling cover and the water-cooling base plate;

[0025] Water cooling pipes are installed inside the water cooling base plate and the water cooling cover.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] 1. The present invention provides a device for online detection and grinding of annealing rollers. The device detects and determines whether there are foreign objects on the annealing rollers through the pressure changes of the pressure sensor, and grinds the foreign objects in a targeted manner through the grinding block. During the grinding process, other pressure sensors will synchronously detect the grinding effect.

[0028] 2. The device for online detection and polishing of annealing rollers provided by the present invention realizes online polishing of annealing rollers, avoids the loss of manpower and material resources caused by roller replacement, and effectively improves production efficiency.

[0029] 3. The device for online detection and polishing of annealing rollers provided by the present invention can pre-detect whether there are foreign objects on the annealing rollers and clean them in time. The cleaning process will not affect the production conditions, thus ensuring the continuity and stability of production and effectively improving production efficiency.

[0030] 4. The device for online detection and polishing of annealing rollers provided by the present invention is provided with a pressure sensor, which can digitize the conditions of the annealing rollers before and after polishing through pressure display, so as to facilitate the evaluation of the polishing effect.

[0031] 5. The device for online detection and polishing of annealing rollers provided by the present invention has a simple structure, a small size, and is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0033] Figure 1 It is a partial structural diagram of the device for online detection and polishing of annealing rollers provided by the present invention;

[0034] Figure 2 It is a structural schematic diagram of the device for online detection and polishing of annealing rollers provided by the present invention.

[0035] Among them, the accompanying drawings are marked as: 1. slide rail; 2. water-cooled base plate; 3. double-rod cylinder; 4. U-shaped fastener; 5. grinding block; 51. arc-shaped grinding groove; 6. pressure detection mechanism; 61. lifting cylinder; 62. pressure sensor; 63. probe; 7. controller; 8. threading track; 21; guide rod; 22. guide wheel; 23. water-cooled hood. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0037] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0038] like Figures 1 to 2 As shown, a device for online detection and grinding of annealing rollers includes a slide rail 1, a water-cooled base plate 2, a drive mechanism, a double-rod cylinder 3, a grinding block 5, a pressure detection mechanism 6, a controller 7, a control system 11, and a threading track 8;

[0039] Slide rail 1 is installed parallel to and just below the annealing roller, and both ends of the slide rail 1 are installed inside the annealing furnace;

[0040] The water-cooling base plate 2 is slidably mounted on the top of the slide rail 1;

[0041] Two sliding blocks are installed on the bottom surface of the water-cooling base plate 2. The two sliding blocks fit into the upper end of the outer side of the slide rail 1 to prevent the water-cooling base plate 2 from separating from the slide rail 1.

[0042] A driving mechanism, which is used to drive the water-cooling base plate 2 to slide on the slide rail 1;

[0043] The drive mechanism consists of a drive motor, a drive shaft, a driven shaft, sprockets mounted on the drive shaft and the driven shaft, a chain wound around the sprockets, and a slider fixedly mounted on the chain. The drive mechanism can be installed at both ends of the slide rail 1. The working process is as follows: the drive motor drives the drive shaft to rotate, which drives the slider to move through the chain transmission. The slider is fixedly connected to the water-cooled base plate 2, thereby driving the water-cooled base plate 2 to slide on the slide rail 1.

[0044] A double-rod cylinder 3 is mounted on the top of the water-cooled base plate 2. A U-shaped fastener 4 is fixedly mounted on the output end of the double-rod cylinder 3. A grinding block 5 is tightly placed in the open end of the U-shaped fastener 4. The grinding block 5 is used to grind the annealing roller.

[0045] The top surface of the grinding block 5 is provided with an arc-shaped grinding groove 51, which is used to place the annealing roller. The arc-shaped grinding groove 51 can fit the annealing roller and increase the grinding area, thereby improving the grinding efficiency.

[0046] The bottom of the grinding block 5 is fixed to the open end of the U-shaped fastener 4 by bolt connection. This fixing method not only prevents the grinding block 5 from falling off during the grinding process, but also facilitates the replacement or disassembly of the grinding block 5.

[0047] The material of the grinding block 5 includes any one of oilstone, white graphite or graphite. These grinding materials will not damage the annealing roller and have a hardness suitable for grinding.

[0048] The specific process of grinding the annealing roller is as follows: by starting the double-rod cylinder 3, the arc-shaped grinding groove 51 on the top surface of the grinding block 5 is closely attached to the outside of the annealing roller, and the pressure of the double-rod cylinder 3 is kept constant. At this time, the driving mechanism is started to make the water-cooled bottom plate 2 slide slowly on the slide rail 1, thereby fully grinding the annealing roller;

[0049] During normal production, the annealing roller rotates continuously. By adopting this device, the surface of the annealing roller can be polished while the annealing roller is operating normally, without disrupting the normal operation of the annealing roller.

[0050] The double-rod cylinder 3 is a high-precision double-rod cylinder that can be connected to the external controller 7 signal. The controller 7 can also be connected to the external control system 11. The control system 11 is used to issue instructions to the controller 7 and receive relevant data information transmitted by the controller;

[0051] After the grinding block 5 is on top of the outside of the annealing roller, the control system 11 sends instructions to the controller 7 or directly inputs parameters on the controller 7 to change the pressure of the input compressed air, accurately adjusts the grinding force of the grinding block 5 on the annealing roller, and feeds back relevant data to the external controller 7 and the control system 11.

[0052] The pressure detection mechanism 6 includes a plurality of lifting cylinders 61. Pressure sensors 62 are fixedly mounted at the output ends of the plurality of lifting cylinders 61. Signal input ends of the plurality of pressure sensors 62 are each provided with a probe 63. The other ends of the plurality of probes 63 are in close contact with the annealing roller.

[0053] The side of the probe 63 that contacts the annealing roller is an arc-shaped surface, which is used to fit tightly against the outside of the annealing roller;

[0054] The probe 63 is resistant to high temperatures and has a lower hardness than the annealing roller. It is a rod made of metal or other materials, and has an arc-shaped top that can fit tightly against the outside of the annealing roller.

[0055] The base of the lifting cylinder 61 is fixedly mounted on the top of the water-cooling base plate 2, and the angle between the lifting cylinder 61 and the water-cooling base plate 2 is 60-90°;

[0056] A plurality of lifting cylinders 61 are provided to detect the polishing effect of the exterior of the annealing roller. The plurality of lifting cylinders 61 can be arranged around the double-rod cylinder 3 so that the plurality of probes 63 can contact different positions on the exterior of the annealing roller. When an abnormality occurs, the pressure sensor 62 can quickly capture the abnormal pressure change and transmit the abnormal change information to the external controller 7, and finally transmit it to the control system 11 for analysis.

[0057] Before grinding, the pressure sensor 62 located at the front end of the water-cooled base plate 2 transmits the pressure change information to the control system 11. The control system 11 issues instructions to the controller 7 or directly inputs parameters on the controller 7 to change the pressure of the input compressed air. The controller 7 controls the double-rod cylinder 3 to rise and perform the grinding process.

[0058] During the actual grinding process, the pressure sensors 62 located on both sides of the annealing roller can be used to detect the grinding effect in a timely manner;

[0059] A controller 7 is used to control the double-rod cylinder 3 and the pressure detection mechanism 6. The controller 7 is also used to control the operation of the drive motor on the drive mechanism;

[0060] The controller 7 is a conventional PLC controller, which can also be used to collect relevant data information of each circuit component, and can also issue instructions to each circuit component to control the operation of each circuit component.

[0061] The controller 7 is externally connected to a control system 11, which is used to collect and analyze the relevant data information of each circuit component collected by the controller 7, and issue instructions to the controller 7 based on the analysis results to control the corresponding circuit components to perform specified actions;

[0062] Threading track 8, used for storing lines;

[0063] A guide rod 21 is fixedly mounted on the side of the water-cooling base plate 2, and a guide wheel 22 is mounted on the other end of the guide rod 21. The threading track 8 is wound around the guide wheel 22 and guided by the guide wheel 22 to ensure that the line can run along with the various circuit components without interfering with the movement of the circuit components.

[0064] A water-cooling cover 23 is fixedly mounted on the top surface of the water-cooling base plate 2. The top surface of the water-cooling cover 23 is provided with through holes adapted to the double-rod cylinder 3 and the lifting cylinder 61. The outer shells of the double-rod cylinder 3 and the lifting cylinder 61 are both fixed in the through holes in a sealed connection manner.

[0065] A mounting area is formed between the water-cooling cover 23 and the water-cooling base plate 2;

[0066] Water cooling pipes are installed inside the water-cooling base plate 2 and the water-cooling cover 23. The water cooling pipes are connected to a cooling water tank. After cooling water is passed into the water cooling pipes through the cooling water tank, the interior of the installation area can be cooled by water.

[0067] The connection between the water-cooling bottom plate 2 and the water-cooling cover 23 adopts a sealing design to prevent the hot air inside the annealing furnace from entering the water-cooling cover 23 and affecting the stable operation of various internal equipment.

[0068] The circuit components provided in the present invention are all conventional high-temperature resistant components, and the pipelines used therein are all high-temperature resistant pipelines.

[0069] The specific working steps of the present invention are as follows:

[0070] Step a: The controller 7 controls the lifting cylinder 61 to rise, so that one of the probes 63 presses against the annealing roller. The probe 63 is marked as probe 1#, the pressure sensor 62 under the probe 1# is marked as pressure sensor 1#, and the lifting cylinder 61 connected to the pressure sensor 1# is marked as lifting cylinder 1#. When the pressure transmitted by the pressure sensor 1# reaches the working pressure, the lifting cylinder 1# stops rising.

[0071] Step b: After the annealing roller rotates one circle, if the data fed back by the 1# pressure sensor at that location is normal, the water-cooled bottom plate 2 continues to slide. When the sliding distance is equal to the coverage width of the 1# probe, the sliding stops. After the annealing roller rotates one circle, the detection data fed back by the 1# pressure sensor is used to determine whether there is a foreign object at that location.

[0072] Step c: Repeat step b;

[0073] Step d: When the detection data is abnormal, the controller 7 controls the double-rod cylinder 3 to lift the grinding block 5 until the grinding block 5 is in contact with the annealing roller and the lifting pressure of the double-rod cylinder 3 reaches the set value and stops rising; at the same time, the lifting cylinder 61 at other positions is raised; wherein the lifting cylinder 61 at other positions is marked as 2# lifting cylinder, the pressure sensor 62 connected to the output end of the 2# lifting cylinder is marked as 2# pressure sensor, and the probe 63 connected to the 2# pressure sensor is marked as 2# probe;

[0074] The 2# probe on the 2# lifting cylinder presses against the annealing roller. When the pressure transmitted by the 2# pressure sensor on the 2# lifting cylinder reaches the working pressure, the 2# lifting cylinder stops rising.

[0075] Step e: The annealing roller rotates one circle, and the detection data fed back by the 2# pressure sensor is used to determine whether there is a foreign object there; if so, repeat this operation until the feedback data of the 2# pressure sensor reaches the normal range;

[0076] Step f: Grinding block 5 and probe #2 are retracted to their original positions, and the online device continues to slide. When the sliding distance is equal to the coverage width of probe #1, the sliding stops. After the annealing roller rotates one circle, the detection data fed back by pressure sensor #1 is used to determine whether there is a foreign object in the area.

[0077] Step g: Repeat the above operation until the online device has completely inspected and polished the annealing roller surface within the glass quality zone.

[0078] This working step can also be used for positioning grinding. It is only necessary to move the water-cooled bottom plate 2 to the corresponding positioning point, that is, the position corresponding to the scratch or surface micro-defect of the glass plate, and use the above working steps to position grind the annealing roller.

[0079] The present invention provides a device for online detection and grinding of annealing rollers. The device detects online and determines whether there are foreign objects on the annealing rollers through the pressure changes of the pressure sensor 62, and grinds the foreign objects in a targeted manner through the grinding block 5. While grinding, other pressure sensors 62 will synchronously detect the grinding effect.

[0080] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0081] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications fall within the scope of the invention as claimed.

Claims

1. A device for online detection and polishing of annealing rollers, characterized in that: include: A slide rail (1), the slide rail (1) being installed below the annealing roller; A water-cooling base plate (2), wherein the water-cooling base plate (2) is slidably mounted on the top of the slide rail (1); A double-rod cylinder (3), the double-rod cylinder (3) is mounted on the top of the water-cooled base plate (2), a U-shaped fastener (4) is fixedly mounted on the output end of the double-rod cylinder (3), a grinding block (5) is tightly placed in the open end of the U-shaped fastener (4), and the grinding block (5) is used for grinding the annealing roller; A pressure detection mechanism (6), the pressure detection mechanism (6) comprising a plurality of lifting cylinders (61), pressure sensors (62) being fixedly mounted on output ends of the plurality of lifting cylinders (61), and probes (63) being provided on signal input ends of the plurality of pressure sensors (62); A controller (7), the controller (7) being used to control the double-rod cylinder (3) and the pressure sensor (62), and to collect relevant data information of the double-rod cylinder (3) and the pressure sensor (62); A control system (11), wherein the control system (11) is used to summarize and analyze relevant data information collected by the controller (7), and issue instructions to the controller (7) based on the analysis results; A threading crawler (8), the threading crawler (8) is used for storing the line; A driving mechanism, the driving mechanism being used to drive the water-cooling base plate (2) to slide on the slide rail (1); One end of the probe (63) away from the pressure sensor (62) is an arc-shaped surface, which is used to fit tightly against the outside of the annealing roller; A water-cooling cover (23) is fixedly mounted on the top surface of the water-cooling base plate (2), and a through hole is opened on the top surface of the water-cooling cover (23) to match the double-rod cylinder (3) and the lifting cylinder (61), and the outer shell of the double-rod cylinder (3) and the outer shell of the lifting cylinder (61) are fixed in the through hole by a sealed connection method; An installation area is formed between the water-cooling cover (23) and the water-cooling base plate (2); Water cooling pipes are installed inside the water cooling base plate (2) and the water cooling cover (23).

2. The device for online inspection and polishing of annealing rollers according to claim 1, characterized in that: The top surface of the grinding block (5) is provided with an arc-shaped grinding groove (51), and the arc-shaped grinding groove (51) can be closely fitted with the outside of the annealing roller.

3. The device for online inspection and polishing of annealing rollers according to claim 1, characterized in that: The bottom of the grinding block (5) is fixed in the open end of the U-shaped fastener (4) by bolt connection.

4. The device for online inspection and polishing of annealing rollers according to claim 1, characterized in that: The material of the grinding block (5) includes one of oilstone, white graphite or graphite.

5. The device for online inspection and polishing of annealing rollers according to claim 1, characterized in that: The angle between the lifting cylinder (61) and the water-cooling base plate (2) is 60-90°.

6. The device for online inspection and polishing of annealing rollers according to claim 1, characterized in that: A guide rod (21) is fixedly mounted on the side of the water-cooling base plate (2), a guide wheel (22) is mounted on the other end of the guide rod (21), and the threading track (8) is wound around the guide wheel (22).

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