Trimming and polishing process for hot glass on production line for manufacturing float glass
A float glass and production line technology, applied in the field of trimming and polishing technology, can solve the problems of glass edge uniformity and low smoothness, and achieve the effect of precise glass size and straight and smooth trimming
Pending Publication Date: 2022-04-29
国玻新创(北京)科技发展有限公司
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AI-Extracted Technical Summary
Problems solved by technology
However, there is currently no known method for edge trimming and polishing at high temperatures. In the prior art, edge trimmin...
Abstract
The invention relates to a trimming and polishing process for hot glass on a production line for manufacturing float glass. According to the process, a longitudinal trimming and polishing device and a transverse trimming and polishing device are used for carrying out longitudinal trimming and polishing treatment and transverse trimming and polishing treatment on a high-temperature glass plate on the float glass production line. According to the high-temperature glass trimming and polishing process, longitudinal trimming and polishing treatment and transverse trimming and polishing treatment are carried out in sequence, the treated glass enters the next deep processing procedure, the edge of the glass subjected to the trimming and polishing procedure does not need to be subjected to edge grinding treatment in the later period, and the process is carried out on a float glass production line at the temperature of 500-650 DEG C, so that the high-temperature glass is obtained. The whole process is operated at high temperature, the glass treated by the process is accurate in size, the trimmed edge of the glass is flat, smooth, neat and free of edge breakage, the edge quality of the glass is far superior to that of a product produced by a traditional glass edge grinding process at normal temperature, and the technical requirement of glass deep processing is completely met.
Technology Topic
EngineeringManufacturing engineering +7
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Examples
- Experimental program(3)
Example Embodiment
[0040] Example 1
[0041] In the 600t/d float production line, the original plate width is 4000mm, and when producing 5mm glass, the main line glass plate speed is 8 ~ 9 m/min. After on-line cutting, the board size is 3662×2442mm, and it is trimmed and polished.
[0042] The trimming and polishing process of hot glass on the production line for manufacturing float glass, the temperature of the high-temperature glass is 500-650 DEG C, and the specific process is as follows:
[0043] (1) after the longitudinal edge breaking process in the B area of the annealing kiln of the flat glass float production line, the glass plate 1 enters the longitudinal edge trimming and polishing area. When the glass plate runs to this area, the control center sends a message to make the annealing kiln roller table with independent transmission run at a suitable speed, and the longitudinal edge trimming and polishing unit components arranged on both sides of the annealing kiln run to the middle of the annealing kiln at the same time, so that the V-shaped groove 2 of the polishing wheel contacts the longitudinal edge of the glass. At this time, the flame gun is turned on and aimed at the longitudinal edge of the glass to spray fire, and the edge of the glass in operation is heated and softened under the action of the flame, and then a smooth and neat glass edge is formed under the extrusion of the V-shaped groove 2 of the polishing wheel. The vertically trimmed glass plate 1 continues to run and turns to the next horizontal leveling and polishing process;
[0044] Among them, the speed of the longitudinal trimming and polishing roller table of the annealing kiln is 8.3m/min, and the longitudinal trimming and polishing device is composed of 2×8 polishing wheels and three trimming flame guns, which are respectively arranged on both sides of the annealing kiln. The polishing wheels and the trimming flame guns 3 are controlled by a control center, which is respectively connected with the polishing wheels and the trimming flame guns 3 in communication, and the polishing wheels and the trimming flame guns 3 are arranged in one-to-one correspondence. The polishing wheel consists of a heat-resistant stainless steel wheel body and a high-temperature bearing; the trimming flame gun consists of a flame gun body and an air pipe; and the trimming flame gun is made of heat-resistant stainless steel. The fuel 4 of the trimming flame gun is a mixture of acetylene and oxygen at a volume ratio of 2:5. The pressure of acetylene and oxygen is 0.07MPa and 0.4MPa, respectively. The temperature of the flame (front part) from the trimming flame gun 3 is 2000℃.
[0045] (2) The glass plate 1 after the longitudinal trimming and polishing in step (1) moves forward to the horizontal trimming process. When the glass plate 1 enters the horizontal trimming and polishing area, the control center sends a message to suspend the operation of the roller table with independent transmission. The trimming and polishing unit components (front and rear groups) arranged above the roller table of the annealing kiln move to the lower part of the annealing kiln at the same time, so that the center line of the V-shaped groove 2 of the polishing wheel coincides with the thickness center line of the glass plate 1. At this time, The polis wheel moves toward that direction close to the glass, so that the polis wheel contacts the two lateral edges of the glass, then the lateral trimming polis device reciprocates along the lateral edge of the glass plate 1, and at the same time, the control center sends a message, and the trimming flame gun 3 is turned on and aims at the lateral edge of the glass plate to spray fire, so that the edge of the glass is softened by heating under the action of the flame, and a smooth and neat glass edge is formed under the extrusion action of the polishing wheel;
[0046] The horizontal trimming and polishing device consists of 20 unit parts in each row (one row at the front and one row at the back), and the unit parts are composed of polishing wheels and trimming flame guns, which are arranged in one-to-one correspondence; the polishing wheels are composed of heat-resistant stainless steel wheel bodies and high-temperature bearings; the trimming flame guns are composed of flame gun bodies and air pipes; and the trimming flame guns are made of heat-resistant stainless steel. The distance between adjacent unit parts is 200mm, the reciprocating pitch is 250mm, the fuel 4 of the trimming flame gun is a mixture of acetylene and oxygen according to the volume ratio of 2:5, the outlet pressure of acetylene is 0.07MPa, the outlet pressure of oxygen is 0.4MPa, and the temperature of the flame (front part) from the trimming flame gun 3 is 2000℃.
[0047] The glass plate after the lateral trimming and polishing treatment continues to move forward to the next process, and the control center sends a message to reset the lateral trimming and polishing device and wait for the next piece of glass to be in place. The size of the glass plate trimmed and polished in this embodiment is 3660.5×2440.7mm, and the diagonal deviation is 2.6 mm. The edge of the glass is flat and smooth, neat and free of edge collapse, which completely meets the technical requirements of glass deep processing.
Example Embodiment
[0048] Example 2
[0049] In the 600t/d float production line, the original plate width is 4000mm, and when 8mm glass is produced, the speed of the main line glass plate is 5 ~ 7 m/min. After on-line cutting, the board size is 3660×2440mm, and it is trimmed and polished.
[0050] The trimming and polishing process of hot glass on the production line for manufacturing float glass, the temperature of the high-temperature glass is 500-650 DEG C, and the specific process is as follows:
[0051] (1) after the longitudinal edge breaking process in the B area of the annealing kiln of the flat glass float production line, the glass plate 1 enters the longitudinal edge trimming and polishing area. When the glass plate runs to this area, the control center sends a message to make the annealing kiln roller table with independent transmission run at a suitable speed, and the longitudinal edge trimming and polishing unit components arranged on both sides of the annealing kiln run to the middle of the annealing kiln at the same time, so that the V-shaped groove 2 of the polishing wheel contacts the longitudinal edge of the glass. At this time, the flame gun is turned on and aimed at the longitudinal edge of the glass to spray fire, and the edge of the glass in operation is heated and softened under the action of the flame, and then a smooth and neat glass edge is formed under the extrusion of the V-shaped groove 2 of the polishing wheel. The vertically trimmed glass plate 1 continues to run and turns to the next horizontal leveling and polishing process;
[0052] Among them, the speed of the longitudinal trimming and polishing roller table of the annealing kiln is 5.2m/min, and the longitudinal trimming and polishing device is composed of 2×8 polishing wheels and 3 trimming flame guns, which are respectively arranged on both sides of the annealing kiln. The polishing wheels and the trimming flame guns 3 are controlled by a control center, which is respectively connected with the polishing wheels and the trimming flame guns 3 in communication, and the polishing wheels and the trimming flame guns 3 are arranged in one-to-one correspondence. The polishing wheel consists of a heat-resistant stainless steel wheel body and a high-temperature bearing; the trimming flame gun consists of a flame gun body and an air pipe; and the trimming flame gun is made of heat-resistant stainless steel. The fuel 4 of the trimming flame gun is a mixture of acetylene and oxygen at a volume ratio of 2:5. The pressure of acetylene and oxygen is 0.07MPa and 0.4MPa, respectively. The temperature of the flame (front part) from the trimming flame gun 3 is 2000℃.
[0053] (2) The glass plate 1 after the longitudinal trimming and polishing in step (1) moves forward to the horizontal trimming process. When the glass plate 1 enters the horizontal trimming and polishing area, the control center sends a message to suspend the operation of the roller table with independent transmission. The trimming and polishing unit components (front and rear groups) arranged above the roller table of the annealing kiln move to the lower part of the annealing kiln at the same time, so that the center line of the V-shaped groove 2 of the polishing wheel coincides with the thickness center line of the glass plate 1. At this time, The polis wheel moves toward that direction close to the glass, so that the polis wheel contacts the two lateral edges of the glass, then the lateral trimming polis device reciprocates along the lateral edge of the glass plate 1, and at the same time, the control center sends a message, and the trimming flame gun 3 is turned on and aims at the lateral edge of the glass plate to spray fire, so that the edge of the glass is softened by heating under the action of the flame, and a smooth and neat glass edge is formed under the extrusion action of the polishing wheel;
[0054] The horizontal trimming and polishing device consists of 20 unit parts in each row (one row at the front and one row at the back), and the unit parts are composed of polishing wheels and trimming flame guns, which are arranged in one-to-one correspondence; the polishing wheels are composed of heat-resistant stainless steel wheel bodies and high-temperature bearings; the trimming flame guns are composed of flame gun bodies and air pipes; and the trimming flame guns are made of heat-resistant stainless steel. The distance between adjacent unit parts is 200mm, the reciprocating pitch is 250mm, the fuel 4 of the trimming flame gun is a mixture of acetylene and oxygen according to the volume ratio of 2:5, the outlet pressure of acetylene is 0.07MPa, the outlet pressure of oxygen is 0.4MPa, and the temperature of the flame (front part) from the trimming flame gun 3 is 2000℃.
[0055] The glass plate after the lateral trimming and polishing treatment continues to move forward to the next process, and the control center sends a message to reset the lateral trimming and polishing device and wait for the next piece of glass to be in place. The size of the glass plate trimmed and polished in this embodiment is 3659.5×2439.7mm, and the diagonal deviation is 2.1 mm. The edge of the glass is flat and smooth, neat and free of edge collapse, which completely meets the technical requirements of glass deep processing.
Example Embodiment
[0056] Example 3
[0057] In the 600t/d float production line, the original plate width is 4000mm, and when producing 12mm glass, the main line glass plate speed is 3 ~ 5 m/min. After on-line cutting, the board size is 3,660 x 2,440 mm, and it is trimmed and polished.
[0058] The trimming and polishing process of hot glass on the production line for manufacturing float glass, the temperature of the high-temperature glass is 500-650 DEG C, and the specific process is as follows:
[0059] (1) after the longitudinal edge breaking process in the B area of the annealing kiln of the flat glass float production line, the glass plate 1 enters the longitudinal edge trimming and polishing area. When the glass plate runs to this area, the control center sends a message to make the annealing kiln roller table with independent transmission run at a suitable speed, and the longitudinal edge trimming and polishing unit components arranged on both sides of the annealing kiln run to the middle of the annealing kiln at the same time, so that the V-shaped groove 2 of the polishing wheel contacts the longitudinal edge of the glass. At this time, the flame gun is turned on and aimed at the longitudinal edge of the glass to spray fire, and the edge of the glass in operation is heated and softened under the action of the flame, and then a smooth and neat glass edge is formed under the extrusion of the V-shaped groove 2 of the polishing wheel. The vertically trimmed glass plate 1 continues to run and turns to the next horizontal leveling and polishing process;
[0060] Among them, the speed of the longitudinal trimming and polishing roller table of the annealing kiln is 3.5m/min, and the longitudinal trimming and polishing device is composed of 2×8 polishing wheels and 3 trimming flame guns, which are respectively arranged on both sides of the annealing kiln. The polishing wheels and the trimming flame guns 3 are controlled by a control center, which is respectively connected with the polishing wheels and the trimming flame guns 3 in communication, and the polishing wheels and the trimming flame guns 3 are arranged in one-to-one correspondence. The polishing wheel consists of a heat-resistant stainless steel wheel body and a high-temperature bearing; the trimming flame gun consists of a flame gun body and an air pipe; and the trimming flame gun is made of heat-resistant stainless steel. The fuel 4 of the trimming flame gun is a mixture of acetylene and oxygen at a volume ratio of 2:5. The pressure of acetylene and oxygen is 0.07MPa and 0.4MPa, respectively. The temperature of the flame (front part) from the trimming flame gun 3 is 2000℃.
[0061] (2) The glass plate 1 after the longitudinal trimming and polishing in step (1) moves forward to the horizontal trimming process. When the glass plate 1 enters the horizontal trimming and polishing area, the control center sends a message to suspend the operation of the roller table with independent transmission. The trimming and polishing unit components (front and rear groups) arranged above the roller table of the annealing kiln move to the lower part of the annealing kiln at the same time, so that the center line of the V-shaped groove 2 of the polishing wheel coincides with the thickness center line of the glass plate 1. At this time, The polis wheel moves toward that direction close to the glass, so that the polis wheel contacts the two lateral edges of the glass, then the lateral trimming polis device reciprocates along the lateral edge of the glass plate 1, and at the same time, the control center sends a message, and the trimming flame gun 3 is turned on and aims at the lateral edge of the glass plate to spray fire, so that the edge of the glass is softened by heating under the action of the flame, and a smooth and neat glass edge is formed under the extrusion action of the polishing wheel;
[0062] The horizontal trimming and polishing device consists of 20 unit parts in each row (one row at the front and one row at the back), and the unit parts are composed of polishing wheels and trimming flame guns, which are arranged in one-to-one correspondence; the polishing wheels are composed of heat-resistant stainless steel wheel bodies and high-temperature bearings; the trimming flame guns are composed of flame gun bodies and air pipes; and the trimming flame guns are made of heat-resistant stainless steel. The distance between adjacent unit parts is 200mm, the reciprocating pitch is 250mm, the fuel 4 of the trimming flame gun is a mixture of acetylene and oxygen according to the volume ratio of 2:5, the outlet pressure of acetylene is 0.07MPa, the outlet pressure of oxygen is 0.4MPa, and the temperature of the flame (front part) from the trimming flame gun 3 is 2000℃.
[0063] The glass plate after the lateral trimming and polishing treatment continues to move forward to the next process, and the control center sends a message to reset the lateral trimming and polishing device and wait for the next piece of glass to be in place. The size of the glass plate after trimming and polishing in this embodiment is 3660×2440mm, and the diagonal deviation is 2.4mm The edge of the glass is flat and smooth, neat and free of edge collapse, which completely meets the technical requirements of glass deep processing.
PUM
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