CN111186988B - Method and system for controlling angular speed of short roller - Google Patents
Method and system for controlling angular speed of short roller Download PDFInfo
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- CN111186988B CN111186988B CN201911399109.6A CN201911399109A CN111186988B CN 111186988 B CN111186988 B CN 111186988B CN 201911399109 A CN201911399109 A CN 201911399109A CN 111186988 B CN111186988 B CN 111186988B
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B17/00—Forming molten glass by flowing-out, pushing-out, extruding or drawing downwardly or laterally from forming slits or by overflowing over lips
- C03B17/06—Forming glass sheets
- C03B17/068—Means for providing the drawing force, e.g. traction or draw rollers
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B17/00—Forming molten glass by flowing-out, pushing-out, extruding or drawing downwardly or laterally from forming slits or by overflowing over lips
- C03B17/06—Forming glass sheets
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- Materials Engineering (AREA)
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- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
Abstract
The invention discloses a method and a system for controlling the angular speed of a short roller, which can control the angular speed of the roller in real time, thereby ensuring the same linear speed among the rollers and ensuring the quality of glass. Comprises the following steps; 1. detecting the starting radius R1 of the fixed roller and the starting radius R2 of the floating roller; 2. detecting the offset d1 of the glass ribbon and the offset d2 of the floating roller during the stretching process of the glass ribbon; the offset d1 of the glass ribbon is the abrasion loss of the fixed roller, and the difference value between the offset d2 of the floating roller and the offset d1 of the glass ribbon is the abrasion loss of the floating roller; 3. calculating the worn radius of the fixed roller to be R1-d1 and the worn radius of the floating roller to be R2- (d2-d 1); 4. calculating a target angular velocity value omega according to a formula omega = V/R; wherein V is the linear velocity required by the roller; r is the radius of the roller, namely the radius of the fixed roller or the floating roller after being worn; 5. and adjusting the angular speed of the fixed roller or the floating roller to the target angular speed value omega obtained by calculation in the fourth step.
Description
Technical Field
The invention belongs to the field of glass manufacturing, and relates to a method and a system for controlling the angular speed of a short roller.
Background
The overflow down-draw method is used for preparing glass by utilizing the short roller to draw and stretch the glass strip, the front end of the short roller is provided with a cylindrical coating layer, and the coating layer is contacted with the glass in the process of drawing and stretching the glass strip, and the coating layer can be gradually lost due to the friction between the coating layer and the glass, and the outer diameter of the coating layer can be changed. The short roller is used in pairs when the short roller pulls, stretches the glass area, divide into fixed roll and floating roll, and two rollers rotate in opposite directions, and for obtaining the better glass of quality, the position that two rollers contacted with the glass area requires the same linear velocity, because the function of fixed roll and floating roll is different, the coating external diameter of two rollers changes and also is different, can cause the linear velocity difference at two rollers and glass area contact position, causes the influence to the glass quality. In addition, since the short rolls are provided with a plurality of groups of fixed rolls and floating rolls from top to bottom when the short rolls draw and stretch the glass ribbon, the starting positions of the upper group of rolls and the lower group of rolls are the same, the roll coating layers are different in outer diameter due to abrasion, and unfavorable lower pulling force or upper pushing force is generated for the glass ribbon in the preparation of the glass ribbon, which also affects the quality of the glass. It is desirable to control the rotational speed of the stub rolls so that the fixed and floating rolls have the same linear speed at the portion of the glass ribbon that contacts the glass ribbon.
Disclosure of Invention
The present invention is directed to overcome the above-mentioned shortcomings of the prior art, and provides a method and a system for controlling the angular velocity of a short roller, which can control the angular velocity of the roller in real time, thereby ensuring the same linear velocity between the rollers and ensuring the quality of glass.
In order to achieve the purpose, the invention adopts the following technical scheme to realize the purpose:
a method of controlling the angular velocity of a stub roll comprising the steps of;
detecting the initial radius R1 of a fixed roller and the initial radius R2 of a floating roller;
detecting the offset d1 of the glass ribbon and the offset d2 of the floating roll in the process of stretching the glass ribbon; the offset d1 of the glass ribbon is the abrasion loss of the fixed roller, and the difference value between the offset d2 of the floating roller and the offset d1 of the glass ribbon is the abrasion loss of the floating roller;
step three, calculating the worn radius of the fixed roller to be R1-d1, and the worn radius of the floating roller to be R2- (d2-d 1);
step four, calculating a target angular velocity value omega according to a formula omega which is V/R;
wherein V is the linear velocity required by the roller; r is the radius of the roller, namely the radius of the fixed roller or the floating roller after being worn;
and step five, adjusting the angular speed of the fixed roller or the floating roller to the target angular speed value omega obtained by calculation in the step four.
Preferably, the angular velocity ω of the roll is controllably adjusted when the offset d2 of the dancer differs from the offset d1 of the glass ribbon by more than a first threshold value and/or the offset d2 of the glass ribbon by more than a second threshold value.
Preferably, when the offset amount d1 of the glass ribbon exceeds the set threshold value, after the angular velocity adjustment of the fixed roller or the dancer roller is completed, the fixed roller is horizontally moved in the dancer roller direction by the offset amount d1 of the glass ribbon.
Preferably, the rotational speed of a motor connected to the roller is controlled while adjusting the change in the angular velocity of the roller.
A system for controlling the angular velocity of a short roll includes a glass ribbon position detection sensor, a dancer roll controller, and a fixed roll controller;
the glass belt position detection sensor is vertical to the surface of the glass belt and is used for measuring the offset of the glass belt; the floating roller sensor is fixed on the floating roller base and used for detecting the horizontal moving distance of the floating roller base;
the input end of the fixed roller controller is connected with the position detection sensor of the glass ribbon; the fixed roller controller is used for calculating a target angular velocity value to be adjusted of the fixed roller, controlling a motor of the fixed roller and adjusting the angular velocity of the fixed roller to the target angular velocity value;
the input end of the floating roll sensor is connected with the output ends of the glass belt position detection sensor and the floating roll sensor; the floating roller controller is used for calculating a target angular velocity value of the floating roller to be adjusted, controlling a motor of the floating roller and adjusting the angular velocity of the floating roller to the target angular velocity value.
Preferably, a fixed roller sensor is fixed on the fixed roller base, and the fixed roller sensor is used for detecting the horizontal movement distance of the fixed roller base.
Further, the fixed roller sensor and the floating roller sensor both adopt displacement sensors, and the glass belt position detection sensor adopts a non-contact displacement sensor.
Preferably, the glass ribbon position detection sensor is disposed within a distance of less than 20mm above the fixed roll or the dancer roll.
Preferably, the floating roll controller and the fixed roll controller both adopt PLC.
Compared with the prior art, the invention has the following beneficial effects:
the invention discloses a method for controlling the angular speed of a roller, which comprises the steps of detecting the offset of a glass belt and the offset of a floating roller to obtain the worn radius of the roller, knowing the worn radius of the roller and the required linear speed through a formula of the relationship among the linear speed, the angular speed and the radius to obtain and change the rear angular speed, further controlling the angular speed of the roller, and controlling the angular speed of the roller in real time, thereby ensuring that the linear speeds of a fixed roller and the floating roller are the same.
Further, after the angular velocity adjustment of the fixed roller and the floating roller is completed, the fixed roller is horizontally moved to correct the offset of the glass ribbon.
The invention discloses a system for controlling the angular speed of a roller, which is characterized in that a sensor is arranged to obtain the offset of a glass belt, the horizontal moving distance of a fixed roller and the horizontal moving distance of a floating roller, the angular speed values which need to be reached by the fixed roller and the floating roller are obtained by calculating through a program stored in a controller, and the controller is used for controlling the rotating speed of motors of the fixed roller and the floating roller, so that the linear speeds of the fixed roller and the floating roller are the same.
Drawings
FIG. 1 is a schematic diagram of a glass forming process;
FIG. 2 is a schematic view of rollers holding glass;
FIG. 3 is a schematic view of the horizontal movement of the rollers;
FIG. 4A is a state where the rollers grip the glass at the initial position;
FIG. 4B is a state in which the rollers are worn to grip the glass;
FIG. 4C is a schematic view of the glass ribbon after position correction;
FIG. 4D is a schematic diagram showing defects generated by the difference in linear velocity between the upper and lower pairs of short rolls;
fig. 5 is a schematic view of a pair of rollers.
Wherein: 1-a glass ribbon; 2-a fixed roller; 3-a floating roll; 4-glass ribbon position detection sensor; 5-a fixed roll sensor; 6-floating roll sensor; 7-a dancer controller; 8-feeding pipe; 9-overflow forming a cavity; 10-short roll pulling assembly; 11-a follow-up cutter; 12-groove; 13-an overflow vessel; 14-edge rollers; 15-a glass sheet; 16-a first crank arm; 17-a mandril; 18-a first counterweight; 19-a connecting rod; 20-a fixed roller base; 21-a dancer roll base; 22-a second crank arm; 23-a second counterweight; 24-fixed roll controller.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
as shown in FIG. 1, a forming process in a glass manufacturing system comprising a plurality of pairs of stub rolls is shown and, more particularly, may include a feed tube 8, an overflow forming cavity 9, a stub roll pulling assembly 10, and a follower cutter 11. The molten and clarified glass flows through the feed pipe 8 into the trough 12 of the overflow receptacle 13 in the overflow forming cavity 9, then overflows from both sides of the overflow receptacle 13 and flows down along the sides, and is fused together at the bottom of the overflow receptacle 13, and the edge rollers 14, the stub pulling assembly 10 form the molten glass down into the glass ribbon 1, and the glass ribbon 1 and the vertical line of the bottom are coincident, and then the glass ribbon 1 is scored by the follower cutter 11 to cut the glass ribbon 1 into glass sheets 15.
As shown in fig. 1, the short roll drawing assembly 10 comprises a plurality of sets of short rolls that grip along the edge of the glass ribbon 1 and draw the glass ribbon 1 downward, a dancer controller 7, and a fixed roll controller 24, the controller 7 controlling the angular velocity of each short roll, i.e., the linear velocity of the portion of the roll in contact with the glass ribbon 1.
The output ends of two controllers 7 of a fixed roller controller 24 are respectively connected with the input end of a motor of the fixed roller 2, and the input end of the fixed roller controller 24 is connected with a glass belt position detection sensor 4; the fixed roller controller 24 is configured to calculate a target angular velocity value of the fixed roller 2 that needs to be adjusted, control a motor of the fixed roller 2, and adjust the angular velocity of the fixed roller 2 to the target angular velocity value;
the input end of the floating roll sensor 6 is connected with the output ends of the glass belt position detection sensor 4 and the floating roll sensor 6; the dancing roller controller 7 is used for calculating a target angular velocity value of the dancing roller 3 to be adjusted, controlling a motor of the dancing roller 3, and adjusting the angular velocity of the dancing roller 3 to the target angular velocity value.
As shown in fig. 2 and 3, each pair of short rolls comprises a fixed roll 2 and a floating roll 3, the fixed roll 2 and the floating roll 3 are parallel to each other, the fixed roll 2 and the floating roll 3 rotate in opposite directions, the initial outer diameter and the initial angular velocity of the fixed roll 2 and the floating roll 3 are clamped and drawn through the glass ribbon 1 therebetween, the contact portion between the fixed roll 2 and the floating roll 3 and the glass ribbon 1 has the same initial linear velocity, a predetermined distance is provided between the fixed roll 2 and the floating roll 3 when the glass ribbon 1 is initially clamped and drawn, the fixed roll 2 has an initial fixed position P0, the floating roll 3 has an initial floating position P1, so that the floating roll 3 exerts a certain force on the glass ribbon 1, and the glass ribbon 1 has an initial position P2.
As shown in fig. 3, the fixed roll 2 and the floating roll 3 can be driven by the base to move horizontally to clamp the glass, and when the glass clamping device starts to work, the fixed roll 2 and the floating roll 3 are at a starting fixed position P0 and a starting floating position P1, and the starting positions of the fixed roll 2 and the floating roll 3 are determined according to the glass ribbon 1 which is coincident with the bottom plumb line of the overflow container 13, namely, the central lines of the fixed roll 2 and the floating roll 3 are coincident with the center of the glass ribbon 1. Fixed roller 2 is through first crank arm 16, ejector pin 17 and first counter weight 18 fixed position, it is specific, fixed roller base 20 is connected to the crank arm, the corner is articulated, can rotate, first connecting arm one end is articulated with first crank arm 16, the other end is articulated with fixed roller base 20, can drive fixed roller base 20 horizontal motion when first crank arm 16 rotates, 2 horizontal motion of fixed roller promptly, first counter weight 18 exerts pressure at first crank arm 16 tip, ejector pin 17 supports first crank arm 16, prevent first crank arm 16 because the rotation that produces of exerting pressure of self weight and first counter weight 18, ejector pin 17's height can be adjusted, can restrict the turned angle of first crank arm 16 from this, and then restrict the position of fixed roller 2.
As also shown in fig. 3, the dancer 3 is not limited by the lift pins 17, and after the dancer 3 clamps the glass ribbon 1, the dancer 3 can horizontally float along with the influence of the thickness of the glass ribbon 1 and other factors, and the force applied to the glass ribbon 1 by the dancer 3 can change the position of the second counterweight 23 on the second crank arm 22 for management and control.
As shown in fig. 4A to 4B, a state in which the fixed roller 2 and the floating roller 3 pinch the glass ribbon 1 at the initial position; as the fixed roller 2 and the floating roller 3 are used, the roll diameter of the fixed roller 2 and the roll diameter of the floating roller 3 are less worn by contact with the glass ribbon 1, and the glass ribbon 1 is biased toward the fixed roller 2 from the start position P3 by the pressing force of the floating roller 3 because the position of the fixed roller 2 is not moved, and the state of fig. 4B appears. The roll diameter is reduced and the variation amounts of the two rolls are not completely the same, and the initial angular velocities of the fixed roll 2 and the floating roll 3 are the same, it is known that V ═ ω R, the linear velocity of the portion in contact with the glass ribbon 1 in fig. 4B has changed compared to fig. 4A, and when the change in the roll diameter exceeds a certain range, a defect is caused to the glass, and at this time, the angular velocity of the rolls needs to be corrected so that the linear velocity reaches the initial linear velocity.
As can be seen from fig. 4B, the second position of the glass ribbon 1 is shifted by d1 from the start position P2, and the second position of the dancer roller 3 is shifted by d2 from the start position P1, where the shifting of the glass ribbon 1 is caused by the wear of the fixed roller 2, so the amount of wear of the fixed roller 2 is equal to the shift amount d1 of the glass ribbon 1. The offset of the dancer roll 3 is caused by both the abrasion of the fixed roll 2 and the abrasion of the dancer roll 3, and the abrasion amount of the dancer roll 3 is equal to the offset amount of the dancer roll 3 minus the offset amount d1 of the glass ribbon 1. The monitoring point of the glass belt 1 position change has a direct relation with the abrasion loss values of the fixed roller 2 and the floating roller 3, as shown in fig. 2, the monitoring point of the glass belt 1 position detection device on the glass is close to the circumference of the fixed roller 2 or the floating roller 3 in the height direction, is better less than 20mm and is positioned in the width area of the roller clamping glass belt 1, the deviation of the detection result and the actual movement amount of the glass is larger due to an overlarge range, and the effect of the whole scheme is weakened. The position of the monitoring point of the position detecting device of the glass ribbon 1 on the glass in the horizontal direction is within the range where the rollers nip the glass. The sensing device can measure the position of the ribbon 1 over different rolls to meet the needs of the different rolls. The glass ribbon 1 position detection device employs non-contact displacement measurement.
As shown in fig. 4D, the upper and lower pairs of short rolls have different roll diameters due to different roll service times and wear amounts, the lower pair of short rolls have a smaller roll diameter and the upper pair of short rolls have a larger roll diameter, and if the angular velocities are the same, the linear velocity of the lower pair of short rolls is less than the linear velocity of the upper pair of short rolls, and the state shown in fig. 4D occurs between the two pairs of short rolls of the glass ribbon 1, which cannot meet the requirements of the glass ribbon 1 for warpage and stress, and also requires the aforementioned short roll rotation speed control scheme to keep the linear velocities of the upper and lower short rolls consistent.
The right part of fig. 5 shows a method for measuring the offset d2 of the dancer roll 3, the roll is assembled with the base through a bearing, the dancer roll sensor 6 is fixed on the support frame of the short roll traction assembly, and the dancer roll sensor 6 detects the displacement of the base of the dancer roll 3, namely the offset of the dancer roll 3. The left part of fig. 5 shows the measurement of the amount of translation of the fixed roll 2, as used by the dancer roll 3. When the position of the fixed roller 2 is kept constant during operation, and when the offset amount d1 of the glass ribbon 1 is too large, that is, the abrasion amount of the fixed roller 2 is too large, it is necessary to translate the fixed roller 2 to offset the positional deviation of the glass ribbon 1 caused by the abrasion amount, as shown in the position of fig. 4C. The translation distance of the fixed roll 2 is monitored by a fixed roll sensor 5, and the fixed roll sensor 5 is fixed on a support frame of the short roll traction assembly. The horizontal displacement of the fixed roller 2 can be seen in fig. 3, and the height of the ejector rod 17 is adjusted, so that the crank arm rotates to drive the base and the fixed roller 2 to horizontally move. The fixed roll sensor 5 and the floating roll sensor 6 may employ displacement sensors.
The short roller rotation speed control scheme comprises the steps that a glass belt 1 position detection device monitors the offset d1 of a glass belt 1 after a fixed roller 2 is worn, a floating roller sensor 6 monitors the offset d2 of a floating roller 3 after the fixed roller 2 and the floating roller 3 are worn, a controller 7 receives the above two signals, when the difference between the offset d2 of the floating roller 3 and the offset d1 of the glass belt 1 is larger than a first threshold value and/or the offset d1 of the glass belt 1 is larger than a second threshold value, the floating roller controller 7 and a fixed roller controller 24 respectively calculate the respective abrasion amounts of the floating roller 3 and the fixed roller 2, the abrasion amounts of the fixed roller 2 are converted into the variation of the roller radius, the abrasion amount of the fixed roller 2 is d1, and the abrasion amount of the floating roller 3 is d2-d 1.
According to the formula V ═ ω R or ω ═ V/R.
V, ω and R are the initial linear velocity, initial angular velocity and initial radius of the roller, respectively, when the fixed roller 2 and the floating roller 3 are worn, their radii become R-d1 and R- (d2-d1), the linear velocity V value of the roller needs to be kept unchanged in application, and when R is changed, the angular velocity ω needs to be adjusted accordingly to ensure the V value according to the formula ω V/R.
The output ends of the floating roll controller 7 and the fixed roll controller 24 are respectively connected with the input ends of the motors of the fixed roll 2 and the floating roll 3; the input end of each controller 7 is connected with the output ends of the glass ribbon position detection sensor 4 and the floating roll sensor 6; the controller 7 controls the rotational speed of the motor connected to the roller as the change in the angular velocity of the roller is adjusted.
The dancer controller 7 and the fixed roller controller 24 control the angular velocities of the dancer roller 3 and the fixed roller 2 in accordance with the change amount of the roller radius, and control the linear velocities of the fixed roller 2 and the dancer roller 3 at the starting linear velocity. Meanwhile, when the offset d1 of the glass ribbon 1 exceeds the second threshold value, after the angular velocity adjustment of the fixed roller 2 or the floating roller 3 is completed, the fixed roller controller 24 sends a signal for correcting the position of the glass ribbon 1, and horizontally moves the fixed roller 2 toward the floating roller 3 by the offset d1 of the glass ribbon 1, so as to correct the position of the glass ribbon 1.
The above-mentioned contents are only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited thereby, and any modification made on the basis of the technical idea of the present invention falls within the protection scope of the claims of the present invention.
Claims (6)
1. A method of controlling the angular velocity of a stub roll comprising the steps of;
detecting a starting radius R1 of a fixed roller (2) and a starting radius R2 of a floating roller (3);
detecting the offset d1 of the glass ribbon (1) and the offset d2 of the floating roller (3) in the stretching process of the glass ribbon (1); the offset d1 of the glass ribbon (1) is the abrasion loss of the fixed roller (2), and the difference value between the offset d2 of the floating roller (3) and the offset d1 of the glass ribbon (1) is the abrasion loss of the floating roller (3);
step three, calculating the worn radius of the fixed roller (2) to be R1-d1, and the worn radius of the floating roller (3) to be R2- (d2-d 1);
step four, calculating a target angular velocity value omega according to a formula omega = V/R;
wherein V is the linear velocity required by the roller; r is the radius of the roller, namely the radius of the worn fixed roller (2) or floating roller (3);
step five, adjusting the angular speed of the fixed roller (2) or the floating roller (3) to the target angular speed value omega obtained by calculation in the step four;
when the difference between the offset d2 of the floating roller (3) and the offset d1 of the glass ribbon (1) is larger than a first threshold value and/or the offset d2 of the glass ribbon (1) is larger than a second threshold value, the angular speed omega of the roller is controlled and adjusted; controlling the rotating speed of a motor connected with the roller when the angular speed of the roller is adjusted to be changed;
when the offset d1 of the glass ribbon (1) exceeds a set threshold value, after the angular velocity adjustment of the fixed roller (2) or the floating roller (3) is completed, the fixed roller (2) is horizontally moved towards the floating roller (3), and the moving distance is the offset d1 of the glass ribbon (1).
2. A system for controlling the angular velocity of a short roll is characterized by comprising a glass ribbon position detection sensor (4), a floating roll sensor (6), a floating roll controller (7) and a fixed roll controller (24);
the glass belt position detection sensor (4) is vertical to the surface of the glass belt (1) and is used for measuring the offset of the glass belt (1); the floating roller sensor (6) is fixed on a support frame of the short roller traction assembly, and the floating roller sensor (6) is used for detecting the horizontal moving distance of the floating roller base (21);
the fixed roller controller (24) is connected with the input end of a motor of the fixed roller (2), and the input end of the fixed roller controller (24) is connected with the glass belt position detection sensor (4); the fixed roller controller (24) is used for calculating a target angular velocity value of the fixed roller (2) to be adjusted according to the method of claim 1, controlling a motor of the fixed roller (2) and adjusting the angular velocity of the fixed roller (2) to the target angular velocity value;
the floating roll controller (7) is connected with the input end of a motor of the floating roll (3), and the input end of the floating roll sensor (6) is connected with the output ends of the glass belt position detection sensor (4) and the floating roll sensor (6); the dancing roll controller (7) is used for calculating a target angular velocity value of the dancing roll (3) to be adjusted according to the method of claim 1, and controlling the motor of the dancing roll (3) to adjust the angular velocity of the dancing roll (3) to the target angular velocity value.
3. A system for controlling angular velocity of stub rolls according to claim 2, wherein a fixed roll sensor (5) is fixed to the support frame of the stub roll pulling assembly, the fixed roll sensor (5) being adapted to detect the horizontal movement distance of the fixed roll base (20).
4. A system for controlling the angular velocity of short rolls according to claim 3, wherein the fixed roll sensor (5) and the floating roll sensor (6) each employ a displacement sensor, and the glass ribbon position detection sensor (4) employs a non-contact displacement sensor.
5. A system for controlling the angular velocity of short rolls according to claim 2, characterized in that the ribbon position detection sensor (4) is disposed within a distance of less than 20mm above the fixed roll (2) or the floating roll (3).
6. A system for controlling the angular velocity of short rolls according to claim 2, characterized in that the floating roll controller (7) and the fixed roll controller (24) both use PLC.
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| CN201911399109.6A CN111186988B (en) | 2019-12-30 | 2019-12-30 | Method and system for controlling angular speed of short roller |
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| CN201911399109.6A CN111186988B (en) | 2019-12-30 | 2019-12-30 | Method and system for controlling angular speed of short roller |
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| CN112094059B (en) * | 2020-08-22 | 2022-06-24 | 福建三明南方水泥有限公司 | Preparation process of high-grade cement based on modified fluorgypsum |
| CN112157126A (en) * | 2020-09-01 | 2021-01-01 | 山东钢铁集团日照有限公司 | Control method for reducing abrasion of roller way |
| CN112710239B (en) * | 2020-11-25 | 2022-07-01 | 彩虹（合肥）液晶玻璃有限公司 | Measuring device for short roller floating amount in substrate glass forming furnace |
| CN112941951B (en) * | 2021-04-13 | 2023-02-17 | 福建省青山纸业股份有限公司 | Method for detecting and adjusting first pressing speed of paper machine pressing part |
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| JP4753067B2 (en) * | 2005-08-18 | 2011-08-17 | 日本電気硝子株式会社 | Sheet glass forming method |
| CN102906035B (en) * | 2010-05-20 | 2015-10-07 | 康宁股份有限公司 | Fusion drawing ribbon position control scheme |
| KR101300909B1 (en) * | 2011-03-30 | 2013-08-27 | 아반스트레이트코리아 주식회사 | Method and apparatus for making glass sheet |
| US9315409B2 (en) * | 2011-11-29 | 2016-04-19 | Corning Incorporated | Glass manufacturing apparatus and methods |
| TWI570075B (en) * | 2012-05-31 | 2017-02-11 | 康寧公司 | Glass manufacturing apparatus and methods for manufacturing a glass ribbon |
| US20200308040A1 (en) * | 2016-06-21 | 2020-10-01 | Corning Incorporated | Multi-elevation drive apparatus for a glass manufacturing apparatus with tension control in bottom of draw |
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