CN109641773A - Glass manufacturing equipment and method - Google Patents

Abstract

Glass manufacturing equipment and method are provided.Method is comprising steps of a) form the glass tape with width；C) operation drawing roller arrangement, it includes at least a pair of of drawing roller and at least a pair of of driving device, at least a pair of roller that draws includes that the first drawing roller and second draw roller, at least a pair of of driving device includes the second driving device for driving the first first driving device for drawing roller and driving second to draw roller, to be in the drawing path drawing glassribbons being laterally extended along with width, rotate the first drawing roller with a surface of drawing glassribbons with the first rotation condition, second, which draws roller, is rotated with the second rotation condition with another surface of drawing glassribbons；B) determine whether the first driving current of the first driving device for being supplied to driving the first drawing roller is mutually significantly different with the second driving current of the second driving device for being supplied to driving the second drawing roller；And c) when the first and second driving currents are determined as significantly different, change at least one of first and second rotation conditions.

Description

Glass manufacturing equipment and method

Technical field

The application is according to 35U.S.C. § 119, it is desirable that on May 23rd, the 2016 South Korea patent application series submitted No. 2016/0063049 priority, it is herein based on this application and its full text is incorporated herein by reference.

Present disclose relates generally to glass manufacturing equipments and method.More specifically, this disclosure relates to using at least a pair of It draws roller and carrys out drawing glassribbons, to manufacture the glass manufacturing equipment and method of sheet glass.

Background technique

Known fusion process (for example, overflow down draw technique) is the method to form the glass flake of high quality, described high-quality The glass flake of amount can be used for various devices, such as flat-panel monitor.Because compared with the sheet glass produced by other methods, The sheet glass of fusion process production has excellent surface flatness and smoothness, to be the glass that production is used for flat-panel monitor The optimization technique of glass piece.

Summary of the invention

Technical problem

Several glass manufacturing equipments (including the glass manufacturing equipment described above using fusion process) are by a pair It draws and is drawn between roller to form glass tape.When such drawing roller when used for a long time, it may occur however that two of pairing drawings The difference of draw conditions and/or abrasion loss between roller.This species diversity may have negative effect for product quality.Therefore, A kind of new solution is needed to overcome this problem.

Solution to the problem

The various aspects of the disclosure are intended to reduce the difference of the draw conditions of pairing drawing roller and/or are intended to make up pairing and draw The difference of the abrasion loss of roller processed, so that manufacture has the glass tape of excellent quality.

According to one aspect, the method for manufacturing glass tape may include:

A) glass tape with width is formed；

B) operation draws the drawing roller arrangement of roller comprising at least a pair, and at least a pair of roller that draws includes the first drawing roller Draw roller with second, thus along path drawing glassribbons are drawn, the drawings path and the width be in be laterally extended so that First drawing roller is rotated with the first rotation condition, with a surface of the first draw conditions drawing glassribbons, and makes the second drawing Roller processed is rotated with the second rotation condition, with another surface of the second draw conditions drawing glassribbons；

C) whether the first and second draw conditions of evaluation mutually have significantly different；And

D) when the first and second draw conditions of evaluation are mutually significantly different, change in the first and second rotation conditions At least one, to reduce the difference between the first and second draw conditions.

According to other side, the method for manufacturing glass tape may include:

A) glass tape with width is formed；

B) operation draws the drawing roller arrangement of roller comprising at least a pair, and at least a pair of roller that draws includes the first drawing roller Draw roller with second, thus along path drawing glassribbons are drawn, the drawings path and the width be in be laterally extended so that First drawing roller is rotated with the first rotation condition, with a surface of drawing glassribbons, and makes the second drawing roller with second turn Dynamic condition rotation, with another surface of drawing glassribbons；

C) whether the first abrasion loss of the first drawing roller that the first drawing of evaluation roller is worn away wears away with the second drawing roller Second draw roller the second abrasion loss it is significantly different, and

D) when the first abrasion loss of evaluation and mutually significantly different the second abrasion loss, change the first and second rotation conditions At least one of, to compensate the difference between the first abrasion loss and the second abrasion loss.

According to other side, the method for evaluating draw conditions may include:

A) operation includes at least a pair of drawing roller arrangement for drawing roller and at least a pair of of driving device, at least a pair of of drawing Roller processed includes first drawing roller and second and drawing roller, and at least a pair of of driving device includes that driving described first draws roller One driving device and the second driving device for driving the second drawing roller, to draw the piece with width along path is drawn Material, the drawing path is in be laterally extended with the width, so that the first drawing roller is rotated with the first rotation condition, to draw piece One surface of material, and the second drawing roller is rotated with the second rotation condition, to draw another surface of sheet material；

B) monitoring is supplied to the first driving current of the first driving device of driving the first drawing roller and is supplied to driving the Two draw the second driving current of the second driving device of roller；And

C) the first and second driving currents are based on, first and second draw conditions are evaluated.

According to other side, the method that evaluation draws the abrasion loss of roller may include:

A) operation includes at least a pair of drawing roller arrangement for drawing roller and at least a pair of of driving device, at least a pair of of drawing Roller processed includes first drawing roller and second and drawing roller, and at least a pair of of driving device includes that driving described first draws roller One driving device and the second driving device for driving the second drawing roller, to draw the piece with width along path is drawn Material, the drawing path and the width are in being laterally extended, so that the first drawing roller rotation to be to draw a surface of sheet material, and So that the second drawing roller is rotated to draw another surface of sheet material；

B) monitoring is supplied to the first driving current of the first driving device of driving the first drawing roller and is supplied to driving the Two draw the second driving current of the second driving device of roller；And

C) the first and second driving currents, the first abrasion loss of the first drawing roller that evaluation the first drawing roller is worn away are based on And second drawing roller wear away second draw roller the second abrasion loss.

According to other side, the method for manufacturing glass tape may include:

B) glass tape with width is formed；

C) operation includes at least a pair of drawing roller arrangement for drawing roller and at least a pair of of driving device, at least a pair of of drawing Roller processed includes first drawing roller and second and drawing roller, and at least a pair of of driving device includes that driving described first draws roller One driving device and the second driving device for driving the second drawing roller, thus along path drawing glassribbons are drawn, it is described Path is drawn with the width in being laterally extended, so that first draws roller with the rotation of the first rotation condition with the one of drawing glassribbons A surface, and the rotation of the second drawing roller is rotated with the second rotation condition with another surface of drawing glassribbons；

D) determine be supplied to driving first drawing roller first driving device the first driving current whether be supplied to drive Second driving current of the second driving device of dynamic second drawing roller is mutually significantly different；And

E) when determining that the first and second driving currents are mutually significantly different, change in the first and second rotation conditions extremely It is one few.

According to other side, glass manufacturing equipment may include:

Forming device, configuration are shaped to the glass tape with width；

Roller arrangement is pulled, is configured to from forming device along drawing path drawing glassribbons, the drawing path and institute Width is stated in being laterally extended, the drawing roller arrangement include it is at least a pair of draw roller and at least a pair of driving device, it is described at least It includes that the first drawing roller and second draw roller that a pair, which draws roller, and at least a pair of of driving device includes driving first drawing The first driving device of roller and the second driving device for driving the second drawing roller；And

Control device is configured to:

The drawing roller arrangement is run, so that the first drawing roller is rotated with the first rotation condition, with the drawing of the first draw conditions One surface of glass tape processed, and the second drawing roller is rotated with the second rotation condition, glass is drawn with the second draw conditions Another surface of band；

Determine be supplied to driving first drawing roller first driving device the first driving current whether be supplied to driving Second driving current of the second driving device of the second drawing roller is mutually significantly different；And

When determining that the first driving current and the second driving current are mutually significantly different, change the first and second rotation conditions At least one of.

May include: according to roller apparatus on the other hand, is pulled

Roller arrangement is pulled, the glass tape that there is width along path drawing is drawn, the drawing path and institute are configured to Width is stated in being laterally extended, the drawing roller arrangement include it is at least a pair of draw roller and at least a pair of driving device, it is described at least It includes that the first drawing roller and second draw roller that a pair, which draws roller, and at least a pair of of driving device includes driving first drawing The first driving device of roller and the second driving device for driving the second drawing roller；And

Control device is configured to:

The drawing roller arrangement is run, so that the first drawing roller is rotated with the first rotation condition, with the drawing of the first draw conditions One surface of glass tape processed, and the second drawing roller is rotated with the second rotation condition, glass is drawn with the second draw conditions Another surface of band；

Determine be supplied to driving first drawing roller first driving device the first driving current whether be supplied to driving Second driving current of the second driving device of the second drawing roller is mutually significantly different；And

When determining that the first driving current and the second driving current are mutually significantly different, change the first and second rotation conditions At least one of.

Detailed description of the invention

In conjunction with attached drawing, pass through the above and other target described below that can be more clearly understood that the disclosure, characteristic and excellent Gesture, in which:

Fig. 1 is the schematic diagram of the glass manufacturing equipment according to an illustrative embodiments, for manufacturing sheet glass；

Fig. 2A to 2C is the schematic diagram according to the drawing roller apparatus of first illustrative embodiments；

Fig. 3 is the schematic diagram according to the drawing roller apparatus of second illustrative embodiments；

Fig. 4 is the schematic diagram according to the drawing roller apparatus of third illustrative embodiments；

Fig. 5 is the schematic diagram according to the drawing roller apparatus of the 4th illustrative embodiments；

Fig. 6 is the schematic diagram according to the drawing roller apparatus of the 5th illustrative embodiments；

Fig. 7 A to 7C is the schematic diagram according to the sheet separation device of an illustrative embodiments；

Fig. 8 A and 8B are the schematic diagram and flow chart according to some embodiments respectively, they are shown in a manner of conceptual The method that evaluation example draws the abrasion loss difference between roller；

The flow chart of Fig. 9 is shown in a manner of conceptual according to some embodiments to the method for having passed through Fig. 8 B The method that the difference of the abrasion loss of evaluation compensates；

The flow chart of Figure 10 shows the drawing for drawing roller drawing glassribbons according to some embodiments in a manner of conceptual The assessment method of condition difference processed；

The flow chart of Figure 11 shows that reduction is commented by the method for Figure 10 according to some embodiments in a manner of conceptual The method of fixed draw conditions difference；

The flow chart of Figure 12 shows the specific example of the method for Fig. 9 and Figure 11；

The chart of Figure 13 A and 13B are shown in front of and after the method for executing Figure 12, the period institute shorter for one section Difference between the driving current value of acquisition；And

The chart of Figure 14 A and 14B are shown in front of and after the method for executing Figure 12, for one section of longer time section institute Difference between the driving effect force value of acquisition.

Execute preferred forms of the invention

Mode is described implementation of the disclosure below with reference to the accompanying drawings, so that the technical staff in disclosure field can be easily Implement present disclosure.

The description of the specific illustrative embodiment of the disclosure is presented by reference to attached drawing.They are not intended to exhaustion Property or be intended to for the disclosure being restricted to precise forms disclosed herein, and based on introduction above, those skilled in the art Member can obviously carry out many different improvements and changes.

Therefore, the scope of the present disclosure is not limited to aforementioned embodiments, but is limited by appended claims and its equivalent form It is fixed.

In this document full text, it should referring to attached drawing, wherein unless otherwise stated, identical appended drawing reference and note Number different attached drawings are used in indicate same or similar component.In the following description, the known function combined herein can be omitted It include that they cause the theme of the disclosure unclear to prevent with the detailed description of component.

Fig. 1 to Fig. 6 shows the glass manufacturing equipment 300 and pulling roller for constructing and running according to several exemplary embodiment Equipment 440,540,640,740 and 840.Although herein drawing roller apparatus 440,540,640,740 and 840 is described as being used for Using the glass manufacturing equipment 300 of downdraw fusion technique, it should be understood that drawing 440,540,640,740 and of roller apparatus 840 can be used for any other kinds of glass manufacturing equipment of drawing glassribbons 305.Therefore, it should not construct in a restricted way Drawing roller apparatus 440,540,640,740 and 840 disclosed herein.

Fig. 1 is the schematic diagram of an illustrative embodiments of glass manufacturing equipment 300, use drawing roller apparatus 440, 540, one in 640,740 and 840 manufactures glass tape.Glass manufacturing equipment 300 includes melt container 310, Fining vessel 315, mixing vessel 320, transferring case 325, forming containers 335 pull roller apparatus 440,540,640,740 or 840 and piece Material separator 900.

In melt container 310, glass batch materials material is introduced as indicated by arrow 312, and its fusing forms melten glass 326.Fining vessel 315 have receive the melten glass 326 from melt container 310 high temperature processing area, and there from Bubble is removed in melten glass 326.Fining vessel 315 (passing through clarifier-mixing vessel connecting tube 322) is connected to mixing vessel 320.In addition, mixing vessel 320 is connected with transferring case 325 by from mixing vessel to transferring case connecting tube 327.It passes It passs container 325 and melten glass 326 is passed by forming device 335 by downcomer 330.Forming device 335 has entrance 332, melten glass 326 is introduced by entrance 332.The groove 337 of the inflow forming containers 335 of melten glass 326 and then overflow are simultaneously Two sides 338a and 338b are flowed down to, its root 339 fuses together later.In root 339, two melten glass 326 flow Rejoin (for example, fusion), is pulled down later by pulling roller apparatus 440,540,640,740 and 840 with draw direction 306 System is to form glass tape 305.Then, 900 pairs of the sheet separation device glass tapes 305 through drawing are crossed, and thereafter split into list Block sheet glass 355.

Referring to fig. 2 to Fig. 6, drawing roller apparatus 440,540,640,740 and 840 is described more fully below.

Fig. 2A to 2C is the accompanying drawings of the drawing roller apparatus 440 constructed according to an illustrative embodiments. As shown in Figure 2 A, drawing roller apparatus 440 includes drawing roller arrangement and control device 446 (for example, programmable logic controller (PLC) 446).Pulling roller arrangement includes that the first drawing roller draws roller to 444 to 442 and second.When the first edge part of glass tape 305 305a is when drawing roller to drawing between 442 associated two rollers 450a and 450b with first, and when the phase of glass tape 305 To second edge portion 305b when drawing roller to drawing between 444 associated two rollers 452a and 452b with second, control Device 446 controls the two rollers to 442 and 444.In some embodiments, roller is drawn to can tilt vertically downward, thus Horizontal drawing tension (that is, the direction of tension is vertical with draw direction 306) and lower drawing tension are generated in glass tape 305 (that is, tension For draw direction 306).In these examples, the two draw roller and are not placed up inclination to 442 and 444, because of this meeting Cause departing from desired compressing force on glass tape 305, this meeting is so that the deformation of glass tape 305 and compression.In addition, depending on processing Condition, it may be desirable to which roller 450a and 450b tilt down with roller 450a and 450b tilting down on another side on side Be different (it is noted that the drawing roller apparatus 740 discussed relative to Fig. 5 do not have vertically downward inclined roller 450a, 450b, 452a and 452b, but there is horizontal roller 450a, 450b, 452a and 452b).

If necessary, roller 450a, 450b, 452a and 452b can also be positioned to have scheduled subtended angle, described pre- Fixed subtended angle is horizontal angle θ, and the respective face of roller 450a, 450b, 452a and 452b for tilting down may be positioned so that relative to glass The corresponding main surface 305c and 305d of glass band 305 is in the horizontal angle θ (C referring to fig. 2) (it is noted that carrying out relative to Fig. 5 The drawing roller apparatus 740 of discussion has horizontal roller 450a, 450b, 452a and 452b, and if necessary, these are specific Roller also may be positioned so that with scheduled subtended angle).Positive subtended angle θ generates horizontal drawing tension 448a, this is preferred.On the contrary, negative Subtended angle θ generates compressing force on glass tape 305, this be it is undesirable because such active force can make glass tape 305 deformation and Be pressurized (it is noted that the drawing roller apparatus 440 that Fig. 2 C is shown has positive subtended angle θ).

Pulling roller apparatus 440 includes driving device 454a, 454b, 456a and 456b, for driving corresponding roller, for example, Servo motor can be used or without using gearcase.

Fig. 3 is the related figure according to the drawing roller apparatus 540 of an illustrative embodiments.As shown in figure 3, pulling roller is set Standby 540 in addition to component relevant to the drawing roller apparatus 440 described at the beginning is (that is, first draws roller to the 442, second drawing roller To 444 and control device 446 (for example, programmable logic controller (PLC) 446)) except, it further include additional drawing roll assembly 500. Drawing roller includes that (there are two end 502a and 502b for tool, they have been optionally coated with compressible resistance to for the first drawing roller 502 to 500 The covering of fiery roller) and second draw roller 504 (there are two tools end 504a and 504b, they have been optionally coated with compressible refractory roll Covering), they extend across glass tape 305.

Increase drawing roll assembly 500, which can also provide, is set for drawing tension 48b and 448c under the difference in glass tape The ability of control.Position can control in band in the case where they are between forming device 335 to 442 and 444 for example, drawing roller Drawing tension 448b, and draw roll assembly 500 can control in band position at them with drawing roller between 442 and 444 Lower drawing tension 448c.

Pulling roller apparatus 540 includes driving device 454a, 454b, 456a, 456b, 506 and 508, for driving accordingly Roller.

Fig. 4 is the accompanying drawings according to the drawing roller apparatus 640 of an illustrative embodiments.As shown in figure 4, drawing Roller apparatus 640 is in addition to component relevant to the drawing roller apparatus 440 described at the beginning is (that is, first draws roller to the 442, second drawing Roller processed is to 444 and control device 446 (for example, programmable logic controller (PLC) 444)) except, it further include the third and fourth drawing roller To 602 and 604.According to the present embodiment, third draw roller to 602 position be located at first draw roller to 442 directly below, And have there are two roller 606a and 606b, between them the first edge part 305a of drawing glassribbons 305.Similarly, Four draw rollers is located at second and draws roller to 444 directly below to 604 position, and has there are two roller 608a and 608b, 305b is divided in the opposing second edge edge of drawing glassribbons 305 between them.In some embodiments, third and fourth roller is drawn It is inclined vertically downward to can be, but in other embodiments, the third and fourth drawing roller is horizontal positioned to can be 's.

Increase and draws roller to 602 and 064 offer to the horizontal drawing tension 448a and 448d and drop-down web tension in band The ability that the different set of 448b and 448c is controlled.For example, upper drawing roller can control position in band to 442 and 444 Their horizontal drawing tension 448a between forming device 335 and lower drawing tension 448b and lower drawing roller can to 602 and 604 To control in band position in them and upper withdrawing roll to the horizontal drawing tension 448d and lower drawing tension 448c between 442 and 444.

Pulling roller apparatus 640 includes driving device 454a, 454b, 456a, 456b, 610a, 610b, 612a and 612b, is used In the corresponding roller of driving.

Fig. 5 is the accompanying drawings according to the drawing roller apparatus 740 of an illustrative embodiments.As shown in figure 5, drawing Roller apparatus 740 includes first drawing roller and drawing roller to 444 and control device 446 (for example, computer 446 or can to 442, second Programmed logic controller 446).When the first edge part 305a of glass tape 305 is drawing roller to 442 relevant two to first When being drawn between horizontal roller 450a and 450b, and when the opposing second edge edge of glass tape 305 divides 305b to draw with second When roller between 444 relevant two horizontal rollers 452a and 452b to drawing, control device 446 is by controlling the two rollers to 442 With 444, the lower drawing tension 448b in glass tape 305 has been efficiently controlled.

If necessary, horizontal roller 450a, 450b, 452a and 452b can also be (automatic (such as to pass through control device 446) or manually) it is positioned to that there is scheduled positive subtended angle, this controls the horizontal drawing active force 448a's generated on glass tape 305 Amount.In addition, drawing roller apparatus 740 can be combined with drawing roll assembly 500 (referring to Fig. 3) or the third and fourth drawing roller pair 602 and 604 (referring to fig. 4).

Fig. 6 is the accompanying drawings according to the drawing roller apparatus 840 of an illustrative embodiments.

Drawing roller apparatus 840 includes that (there are two end 842a and 842b for tool, they are applied for the first drawing roller 842 as shown in Figure 6 Cover the covering of compressible refractory roll) and second draw roller 844 (there are two tools end 844a and 844b, they are coated with compressible Refractory roll covering), they extend across the edge 305a and 305b of glass tape 305 and drawing glassribbons 305.Draw roller apparatus 840 further include being connected to the driving device 846 of the first drawing roller 842 in a manner of operational and being connected to second in a manner of operational Draw the driving device 846 of roller 844.In addition, drawing roller apparatus 840 may also be combined with drawing roller centering shown in Fig. 2A to 5 It is at least one.

Fig. 7 A to 7C shows the sheet separation device 900 according to an illustrative embodiments.

Fig. 7 A is shown when the leading edge of glass tape 305 enters the area that sheet material removes sub-component 915 by scribing line sub-component 921 The overall construction of sheet separation device 900 when domain.Sub-component 921 of crossing includes that anvil machine 923, scriber 925 and scriber pass Defeated device 927.Scribing line sub-component can be mobile scriber/movement anvil machine type, this is known to related fields, but such as If fruit needs, other kinds of scoring system also can be used, for example, the system based on laser.

It includes frame 917 (for example, rectangular frame) that sheet material, which removes sub-component 915, carries sheet material engaged element 919 (for example, being arranged in 4 pane engaged elements of 4 corners of frame, size is less than the width and length of sheet material 355). For example, sheet material engaged element 919 can be soft vacuum chuck, but if necessary, other equipment also can be used It engages sheet glass (for example, fixture).

It includes transmitter 929 that sheet material, which removes sub-component 915, is connected by connection component 931 with frame 917.Transmitter 929 can be the automation equipment of industrial robot and/or fixation, for providing linear and rotation for frame and connection component and moving It is dynamic.Connection component 913, which realizes, to be separated once sheet material 355 occurs in defiber 947 from band 305, frame 917 and is attached to frame Relative to transmitter controlled " falling " occurs for the sheet glass of frame 917, and the defiber 947 extends at least across glass tape 305 A part of width, direction are vertical with draw direction 306.

Fig. 7 B is shown forms defiber 947 by scriber 925 in glass tape 305.Sheet material is also shown in the figure Engaged element 919 has engaged sheet glass.This engagement can occur before or after crossing to sheet material.It can adopt With sheet material engaged element relative to the rigid arrangement of sheet material be used in combination sufficiently soft engaged element (for example, soft vacuum chuck, This not will lead to the excessive movement of sheet material) it is engaged to realize.

Sub-component 915 either is removed with sheet material before or after scribing line and engages sheet material, and removing sub-component 915 should Sheet material is attached to before applying bending moment (so that sheet material 355 is separated from band 305).

Fig. 7 C display applies bending moment.It as shown in the picture, can be with towards the side of the first side of sheet material (uncrossed side) To bending moment is applied, using anvil machine 923 as the stopper to rotate around it.For example, sheet material engaged element 919 can be Scribing line lower section engage with the uncrossed side of glass tape 305, and by transmitter 929, glass tape 305 be lower than the part crossed with Open the direction rotation of scribing line.Thus the tensile stress being applied in scribing line causes crack growth relevant to scribing line to pass through glass The thickness of band, thus from glass tape separation of glasses piece.In some embodiments, connection component 931 makes separated immediately The trailing edge of sheet glass leaves the leading edge of the glass tape 305 of continuous moving.In this way it is possible to make to sheet glass, right Glass tape or the edge damage caused by sheet glass and glass tape the two minimize.

According to the glass manufacturing equipment 300 of illustrative embodiments as described herein include at least one draw roller to extremely A few driving device pair.Draw roller to can be selected from drawing roller as shown in Fig. 2A to Fig. 6 to 442,444,500,602, One of 604 and 842/844.Driving device to can be selected from driving device as shown in Fig. 2A to Fig. 6 to 454a/ One of 454b, 456a/456b, 506/508,610a/610b, 612a/612b and 846/848.For understanding reason, with What is involved is draw roller to 442 and driving device to 454a and 454b for lower description.But those skilled in the art understand and know, The principle of the disclosure which will be described can be applied to other draw rollers to 444,500,602,604 and 842/844 and its His driving device is to 456a/456b, 506/508,610a/610b, 612a/612b, and/or 846/848.

Fig. 8 A and 8B are the schematic diagram and flow chart according to some embodiments respectively, they are shown in a manner of conceptual The method that evaluation draws the abrasion difference between roller.

Control device 446 controls the driving current for being supplied to first driving device 454a and the second driving device 454b, from And makes the first drawing roller 450a and second draw roller 450b and rotated with corresponding predetermined angular speed.For example, using the initial One and second draw roller when, control device 446 can form feedback system, to adjust driving current so that draw roller 450a, 450b can be rotated with identical angular speed.

With the lasting use for drawing roller 450a, 450b, drawing roller 450a, 450b becomes to wear.Specifically, roller is drawn 450a, 450b may occur to wear (as shown in Figure 8 A) in different amounts, this causes even if when drawing roller 450a, 450b tool When having identical angular speed, the mobile linear velocity of circumferential surface is different.Therefore, this drawing roller for leading to that there is lower linear velocity (that is, wearing more severe drawing roller) is slided on glass tape, causes to have a negative impact to forming quality, and adds The abrasion of the more severe drawing roller of abrasion of the speed with lower linear velocity.

Fig. 8 B shows the method for evaluation abrasion loss in a manner of conceptual.The monitoring of control device 446 is supplied to driving the First driving current of the first driving device of one drawing roller and it is supplied to driving second draws the second driving device of roller the Two driving currents.Later, control device 446 can be based on the comparison between the first driving current and the second driving current, to comment The second abrasion loss that the first abrasion loss and the second drawing roller that fixed first drawing roller is worn are worn.Specifically, may be used Driven by lower driving current drawing roller to be assessed as to wear another drawing than being driven by higher drive current Roller wears more severe.Even if being applied to when drawing roller 450a, 450b are rotated with same angular velocity and wearing more severe drawing The torque degree of roller is lower, to consume lower amount of drive current.Therefore, can based on the comparison between driving current, More severe drawing roller is worn to determine.

The flow chart of Fig. 9 shows the difference for the abrasion loss evaluated to the method for having passed through Fig. 8 B in a manner of conceptual The method compensated.

As shown in figure 9, operation drawing roller arrangement, so that the first drawing roller 450a is rotated with the first rotation condition, to draw One surface of glass tape 305, and the second drawing roller 450b is rotated with the second rotation condition, with drawing glassribbons 305 Another surface.In the operational process of drawing roller arrangement, control device 446 is supplied to first driving device 454a by comparison Driving current and be applied to the driving current of the second driving device 454b, come evaluate that the first drawing roller 450a is worn away first Whether abrasion loss is significantly different with second the second abrasion loss for wearing away of drawing roller 450b.Later, when the first abrasion loss of evaluation When significantly different with the second abrasion loss, control device 446 changes at least one of first and second rotation conditions, to compensate the Difference between one abrasion loss and the second abrasion loss.

In some embodiments, the first and second rotation conditions can be first and second drawing roller 450a, 450b's First and second predetermined angular speed.

In some embodiments, control device 446, which monitors, is supplied to the first driving dress that driving first draws roller 450a It sets the first driving current of 454a and is supplied to the second driving electricity that driving second draws the second driving device 454b of roller 450b Stream.It later, can be by the first abrasion loss when the difference between the first driving current and the second driving current is more than preset range It is assessed as with the second abrasion loss mutually significantly different.In this case, control device 446 can will be driven by lower driving current The angular speed of dynamic drawing roller increases to the predetermined angular speed being greater than immediately before.

In some embodiments, when the first abrasion loss and the second abrasion loss are rated as significantly different, control device 446 will be decreased below in first and second drawing roller 450a, 450b by the predetermined diameter of that lower driving current drives Its predetermined diameter immediately before.Here, predetermined diameter indicates control device 446 to approve as the first or second and draws roller The diameter of the electric current diameter of 450a, 450b.In most cases, the value of predetermined diameter can be different with its practical diameter value. After in first and second drawing roller 450a, 450b, through a long time is used but update in control device 446 so that it is predetermined Before diameter value reduces, predetermined diameter value can be greater than its practical diameter value.It can be initially manually entered by operator pre- Determine diameter value, and as the difference between the first and second driving currents as a result, updated manually by operator or It automatically updates.Later, the reduction of the diameter of the drawing roller driven by lower driving current is responded, control device 446 can increase The predetermined angular speed for the drawing roller of function as predetermined diameter driven by lower driving current.Due to drawing the linear velocity of roller (that is, the speed for drawing roller drawing glassribbons) is proportional to the product of angular speed and diameter, and the increase for drawing the angular speed of roller is led The linear velocity for wearing more severe drawing roller is caused to increase.

In some cases, as update so that the predetermined diameter value for wearing more severe drawing roller reduces and then changes it The substitution of predetermined angular speed is greater than the new drawing roller of the actual diameter of the more severe drawing roller of abrasion with diameter to substitute abrasion More severe drawing roller may be the option in practice.

The flow chart of Figure 10 shows that drawing roller 450a, 450b draws according to some embodiments in a manner of conceptual The assessment method of the draw conditions difference of glass tape 305.

Operation drawing roller arrangement, so that first draws roller 450a with a table of the first draw conditions drawing glassribbons 305 Face, and make the second drawing roller 450b with another surface of the second draw conditions drawing glassribbons 305.Later, control device 446 monitorings, which are supplied to the first driving current of the first driving device of driving the first drawing roller and are supplied to driving second, draws roller The second driving device the second driving current.Later, control device 446 can be based on the first electric current and the second electric current, evaluation First draw conditions and the second draw conditions.

When the difference between the first driving current and the second driving current is more than preset range, control device 446 can be with First draw conditions and the second draw conditions are assessed as mutually significantly different.

First and second draw conditions can be with respectively include: i) the first and second corresponding drawing for drawing roller 450a, 450b The drawing effect power that roller processed draws glass tape 305；And ii) first and second draw roller 450a, 450b corresponding drawing The draw rate that roller processed draws glass tape 305.

In some embodiments, control device 446 can be drawn first and second in roller 450a, 450b by lower drive That possessed drawing effect power of streaming current driving is assessed as being less than what another drawing roller drew sheet glass 305 Drawing effect power.

It is driven alternatively, control device 446 can be drawn first and second in roller 450a, 450b by lower driving current That draw rate drawn to glass tape 305 is assessed as being less than what another drawing roller drew glass tape 305 Draw rate.

The flow chart of Figure 11 shows that reduction is commented by the method for Figure 10 according to some embodiments in a manner of conceptual The method of fixed draw conditions difference.

As shown in figure 11, operation drawing roller arrangement, so that the first drawing roller 450a is rotated with the first rotation condition, thus with One surface of the first draw conditions drawing glassribbons 305, and the second drawing roller 450b is rotated with the second rotation condition, from And with another surface of the second draw conditions drawing glassribbons 305.In the operational process of drawing roller arrangement, control device Whether 446 the first draw conditions of evaluation and the second draw conditions are mutually significantly different.Later, when the first draw conditions and second are drawn When condition processed is rated as mutually significantly different, control device 446 be can change in the first draw conditions and the second draw conditions One, to reduce the difference between the first draw conditions and the second draw conditions.

In some embodiments, control device 446 can draw first and second in roller and be driven by lower driving current The angular speed of that dynamic increases to the predetermined angular speed being greater than immediately before.

Alternatively, control device 446 can draw the straight of that driven in roller by lower driving current for first and second Diameter decreases below predetermined diameter immediately before.Later, the reduction of diameter is responded, control device 446 can increase as pre- Determine the predetermined angular speed for the drawing roller of the function of diameter driven by lower driving current.

The flow chart of Figure 12 shows the specific example of the method for Fig. 9 and Figure 11.

Since the engagement operations that the scribing operation and sheet material of scribing line sub-component 921 remove sub-component 915 play influence driving The effect of the interference factor of electric current may be recommended to use when there is no the driving current values obtained when any interference.Specifically, (in the exemplary embodiment, sheet material removal sub-component 915 is being indicated when sheet separation device 900 and glass tape 305 contact The signal that starts of engagement operations be input into the time point of control device 446 and indicate that the scribing line of scribing line sub-component 921 is transmitted Device 927 return operation start signal be input between the time point of control device 446) disengaging time section during obtain And/or obtainable driving current value be not applied to evaluate abrasion loss and evaluate draw conditions.Alternatively, control device 446 can monitor the driving current during the time section that sheet separation device 900 is not contacted with glass tape 305, so It is evaluated afterwards only with the driving current obtained during time section.

In some embodiments, be supplied to the driving current value of driving device acquisition can be it is as follows: i) control dress Set 446 can monitor be fed separately to first driving device 454a and the second driving device 454b the first driving current sequence and Second driving current sequence, this was carried out at regular intervals in each period for producing single sheet glass.When having collected First driving current sequence and the second driving current sequence are (that is, have collected predetermined quantity (such as 60) driving current value and pre- Fixed number amount (such as 60) driving current value), control device 446 can calculate its average movement, then in the evaluation of abrasion loss With the average driving current value for using acquisition in the evaluation of draw conditions.

Control device 446 can calculate the difference of driving current value (that is, be supplied to first driving device 454a first drives Streaming current (average value of the first driving current sequence described in embodiment above) and it is supplied to the second driving device 454b The second driving current (average value of the second driving current sequence described in embodiment above) difference), then first It is compared with the second driving current, to determine whether the difference of driving current value has been more than predetermined difference range.Control device 446, which can draw that driven in roller 450a, 450b compared with low driving voltage for two, is assessed as abrasion than another drawing Roller processed is more severe.When the difference between corresponding driving current value is less than or equal to predetermined difference range, control device 446 can To wait next time point to compare.On the contrary, when the difference between driving current value be greater than predetermined difference range when, by compared with The predetermined diameter of the drawing roller of high driving current driving remains unchanged, while control device 446 can will be by lower driving current That of driving draws roller, and to be accredited as abrasion more severe, and its predetermined diameter is reduced predetermined amount (for example, 0.0005 ").

In some embodiments, glass manufacturing equipment 300 can be configured to be repeated in evaluation operation, be evaluated by it Draw conditions, abrasion loss, and/or driving current, and repeat change operation, by its in the first and second rotation conditions extremely Few one is changed, as described above.Herein, when following situation, control device 446 can terminate the repetition and without It is operated to changing: although the change operation of pre-determined number has been repeated, still determining that the first driving current is driven with second Difference between streaming current continues growing, and the change operates so that at least one of described first and second rotation condition is sent out It is raw to change.

In an exemplary embodiment, when by the predetermined diameter of change operation change immediately before, control is filled Set 446 variations for observing driving current value difference.When new difference is less than or equal to difference immediately before, control device 446 will count initialization to zero (0).On the contrary, control device 446 makes to count when new difference is greater than difference immediately before Number plus 1.When counting reaches predetermined value (for example, 5), the difference of driving current value is read as gradually increasing.In such case Under, control device 446 can be terminated for compensating abrasion and reducing the control technique of the difference in draw conditions.

The chart of Figure 13 A and 13B are shown in front of and after the method for executing Figure 12, the period institute shorter for one section Difference between the driving current value of acquisition.

As illustrated in figures 13 a and 13b, before executing illustrative methods, the first driving current value DC1 (be up to 0.075 with And minimum -0.15) be significantly less than the second driving current value DC2 and (be up to 0.275 and minimum 0.075).On the contrary, After executing illustrative methods, the first driving current value DC1 (being up to 0.15 and minimum -0.08) becomes and the second driving Current value DC2 (be up to 0.275 and minimum 0.075) it is essentially identical.

The chart of Figure 14 A and 14B are shown in front of and after the method for executing Figure 12, for one section of longer time section institute Difference between the driving effect force value of acquisition.

As shown in figs. 14 a-b, before executing illustrative methods, the first drawing effect power DF1 is significantly less than the second drawing Make the DF2 that exerts oneself.On the contrary, the first drawing effect power DF1 becomes and the second drawing effect power after executing illustrative methods DF2 is essentially identical.

According to the disclosure, the drive of driving device is supplied within a period of time for producing single sheet glass by repetition monitoring The variation of streaming current can draw the abrasion loss difference between roller with real-time compensation.Thereby it can be assured that reducing due to drawing roller The difference of operating parameter caused by abrasion loss difference, even the actual diameter of the first drawing roller differs markedly from the second drawing It is also such when the diameter of roller.

In addition, draw roller by long-term use after, forming quality becomes worse and finds between drawing effect power Difference increase.After compensating for the difference of abrasion loss, the difference between drawing effect power can be continually maintained in replacement and draw The level directly measured after roller processed, to increase the expected service life for drawing roller.

Foregoing description presents the specific illustrative embodiment of the disclosure with reference to the accompanying drawings.They are not intended to exhaustive Or be intended to for the disclosure being restricted to precise forms disclosed herein, and based on introduction above, those skilled in the art Many improvements and changes can obviously be carried out.

Therefore, the scope of the present disclosure is not limited to aforementioned embodiments, but is limited by appended claims and its equivalent form It is fixed.

Claims (34)

1. a kind of method for manufacturing glass tape, this method comprises:

A) glass tape with width is formed；

B) operation includes at least a pair of drawing roller arrangement for drawing roller, and at least a pair of roller that draws includes first drawing roller and the Two draw roller, so that the drawing path is in be laterally extended with the width, so that first along path drawing glassribbons are drawn It draws roller to rotate with the first rotation condition, with a surface of the first draw conditions drawing glassribbons, and makes the second drawing roller With the rotation of the second rotation condition, with another surface of the second draw conditions drawing glassribbons；

C) whether the first and second draw conditions of evaluation mutually have significantly different；And

D) when the first and second draw conditions of evaluation are mutually significantly different, change in the first and second rotation conditions at least One, to reduce the difference between the first and second draw conditions.

2. the method as described in claim 1,

Wherein, the drawing roller arrangement further include: first driving device and the second driving device, the first driving device are used for Driving described first to draw, roller is rotated with the first rotation condition and second driving device is for driving described second to draw Roller is rotated with the second rotation condition,

Wherein, first draw conditions include first drawing on the described first one surface for drawing roller drawing glassribbons Active force and second draw conditions include the second of the described second another surface for drawing roller drawing glassribbons Drawing effect power,

Wherein, the first and second rotation conditions respectively include the predetermined angular speed of the first and second drawing rollers,

Wherein, step c) includes:

C1) monitoring is supplied to the first driving current of the first driving device for driving the first drawing roller and is supplied to drive Move the second driving current of second driving device that described second draws roller；And

C2) when the difference between first driving current and second driving current is more than preset range, by described the One drawing effect power and the second drawing effect power be assessed as it is mutually significantly different, and

Wherein, step d) includes increasing by first and second to draw the predetermined of that the drawing roller driven in roller by smaller driving current Angular speed.

3. the method as described in claim 1,

Wherein, the drawing roller arrangement further include: first driving device and the second driving device, the first driving device are used for Driving described first to draw, roller is rotated with the first rotation condition and second driving device is for driving described second to draw Roller is rotated with the second rotation condition,

Wherein, first draw conditions include first drawing on the described first one surface for drawing roller drawing glassribbons Active force and second draw conditions include the second of the described second another surface for drawing roller drawing glassribbons Drawing effect power,

Wherein, the first and second rotation conditions respectively include the predetermined angular speed of the first and second drawing rollers,

Wherein, step c) includes:

C1) monitoring is supplied to the first driving current of the first driving device for driving the first drawing roller and is supplied to drive Move the second driving current of second driving device that described second draws roller；And

C2) when the difference between first driving current and second driving current is more than preset range, by described the One drawing effect power and the second drawing effect power be assessed as it is mutually significantly different, and

Wherein, step d) includes:

D1) reduce by the first and second predetermined diameters for drawing that the drawing roller driven in roller by smaller driving current；And

D2 it) responds the predetermined diameter that draws roller to reduce, increases the pre- of the function as its predetermined diameter that draws roller Fixed angular speed.

4. the method as described in claim 1,

Wherein, the drawing roller arrangement further include: first driving device and the second driving device, the first driving device are used for Driving described first to draw, roller is rotated with the first rotation condition and second driving device is for driving described second to draw Roller is rotated with the second rotation condition,

Wherein, first draw conditions include first drawing on the described first one surface for drawing roller drawing glassribbons Speed and second draw conditions include second drawing on the described second another surface for drawing roller drawing glassribbons Speed processed,

Wherein, the first and second rotation conditions respectively include the predetermined angular speed of the first and second drawing rollers,

Wherein, step c) includes:

C1) monitoring is supplied to the first driving current of the first driving device for driving the first drawing roller and is supplied to drive Move the second driving current of second driving device that described second draws roller；And

C2) when the difference between first driving current and second driving current is more than preset range, by described the One draw rate and second draw rate be assessed as it is mutually significantly different, and

Wherein, step d) includes increasing by first and second to draw the predetermined of that the drawing roller driven in roller by smaller driving current Angular speed.

5. the method as described in claim 1,

Wherein, the drawing roller arrangement further include: first driving device and the second driving device, the first driving device are used for Driving described first to draw, roller is rotated with the first rotation condition and second driving device is for driving described second to draw Roller is rotated with the second rotation condition,

Wherein, first draw conditions include first drawing on the described first one surface for drawing roller drawing glassribbons Speed and second draw conditions include second drawing on the described second another surface for drawing roller drawing glassribbons Speed processed,

Wherein, the first and second rotation conditions respectively include the predetermined angular speed of the first and second drawing rollers,

Wherein, step c) includes:

C1) monitoring is supplied to the first driving current of the first driving device for driving the first drawing roller and is supplied to drive Move the second driving current of second driving device that described second draws roller；And

C2) when the difference between first driving current and second driving current is more than preset range, by described the One draw rate and second draw rate be assessed as it is mutually significantly different, and

Wherein, step d) includes:

D1) reduce by the first and second predetermined diameters for drawing that the drawing roller driven in roller by smaller driving current；And

D2 it) responds the predetermined diameter that draws roller to reduce, increases the pre- of the function as its predetermined diameter that draws roller Fixed angular speed.

6. a kind of method for manufacturing glass tape, this method comprises:

A) glass tape with width is formed；

B) operation includes at least a pair of drawing roller arrangement for drawing roller, and at least a pair of roller that draws includes first drawing roller and the Two draw roller, so that the drawing path is in be laterally extended with the width, so that first along path drawing glassribbons are drawn It draws roller to rotate with the first rotation condition, with a surface of drawing glassribbons, and makes the second drawing roller with the second rotation strip Part rotation, with another surface of drawing glassribbons；

C) the first abrasion loss of the first drawing roller that the first drawing of evaluation roller is worn away whether worn away with the second drawing roller the Second abrasion loss of two drawing rollers is significantly different, and

D) when the first abrasion loss of evaluation and mutually significantly different the second abrasion loss, change in the first and second rotation conditions At least one, to compensate the difference between the first abrasion loss and the second abrasion loss.

7. method as claimed in claim 6,

Wherein, the drawing roller arrangement further include: first driving device and the second driving device, the first driving device are used for Driving described first to draw, roller is rotated with the first rotation condition and second driving device is for driving described second to draw Roller is rotated with the second rotation condition,

Wherein, the first and second rotation conditions respectively include the predetermined angular speed of the first and second drawing rollers,

Wherein, step c) includes:

C1) monitoring is supplied to the first driving current of the first driving device for driving the first drawing roller and is supplied to drive Move the second driving current of second driving device that described second draws roller；And

C2) when the difference between first driving current and second driving current is more than preset range, by described the One abrasion loss and second abrasion loss be assessed as it is mutually significantly different, and

Wherein, step d) includes increasing by first and second to draw the predetermined of that the drawing roller driven in roller by smaller driving current Angular speed.

8. method as claimed in claim 6,

Wherein, the drawing roller arrangement further include: first driving device and the second driving device, the first driving device are used for Driving described first to draw, roller is rotated with the first rotation condition and second driving device is for driving described second to draw Roller is rotated with the second rotation condition,

Wherein, the first and second rotation conditions respectively include the predetermined angular speed of the first and second drawing rollers,

Wherein, step c) includes:

C1) monitoring is supplied to the first driving current of the first driving device for driving the first drawing roller and is supplied to drive Move the second driving current of second driving device that described second draws roller；And

C2) when the difference between first driving current and second driving current is more than preset range, by described the One abrasion loss and second abrasion loss be assessed as it is mutually significantly different, and

Wherein, step d) includes:

D1) reduce by the first and second predetermined diameters for drawing that the drawing roller driven in roller by smaller driving current；And

D2 it) responds the predetermined diameter that draws roller to reduce, increases the pre- of the function as its predetermined diameter that draws roller Fixed angular speed.

9. a kind of method for evaluating draw conditions comprising:

A) operation includes at least a pair of drawing roller arrangement for drawing roller and at least a pair of of driving device, at least a pair of of drawing roller Roller and second is drawn including first and draws roller, and at least a pair of of driving device includes driving described first to draw the first of roller to drive Dynamic device and the second driving device for driving the second drawing roller, so that the sheet material with width is drawn along path is drawn, The drawing path is in be laterally extended with the width, so that the first drawing roller is rotated with the first rotation condition, to draw sheet material A surface, and the second drawing roller is rotated, with the second rotation condition to draw another surface of sheet material；

B) monitoring is supplied to the first driving current of the first driving device for driving the first drawing roller and is supplied to drive Move the second driving current of second driving device that described second draws roller；And

C) the first and second driving currents are based on, the first and second draw conditions are evaluated.

10. method as claimed in claim 9,

Wherein, the first and second draw conditions respectively include the corresponding drawing for drawing roller and drawing sheet material in the first and second drawing rollers Production is exerted oneself；And

Wherein, step c) includes: and draws that driven in roller by smaller driving current by first and second to draw roller to sheet material The drawing effect power drawn is assessed as being less than the drawing effect power that another drawing roller draws sheet material.

11. method as claimed in claim 9,

Wherein, the first and second draw conditions respectively include the corresponding drawing for drawing roller and drawing sheet material in the first and second drawing rollers Speed processed；And

Step c) includes: to draw a drawing roller in roller for first and second to be assessed as the draw rate that sheet material is drawn The draw rate that roller draws sheet material is drawn less than another.

12. a kind of method evaluated to the abrasion loss for drawing roller comprising:

A) operation includes at least a pair of drawing roller arrangement for drawing roller and at least a pair of of driving device, at least a pair of of drawing roller Roller and second is drawn including first and draws roller, and at least a pair of of driving device includes driving described first to draw the first of roller to drive Dynamic device and the second driving device for driving the second drawing roller, so that the sheet material with width is drawn along path is drawn, The drawing path, in being laterally extended, so that first draws roller rotation to draw a surface of sheet material, and makes with the width The second drawing roller rotation is obtained to draw another surface of sheet material；

B) monitoring is supplied to the first driving current of the first driving device for driving the first drawing roller and is supplied to drive Move the second driving current of second driving device that described second draws roller；And

C) be based on the first and second driving currents, evaluation first drawing roller wear away first draw roller the first abrasion loss and Second abrasion loss of the second drawing roller that the second drawing roller is worn away.

13. method as claimed in claim 12,

Wherein, step d) includes: and draws that driven in roller by smaller driving current by first and second to draw the abrasion of roller Amount is assessed as being greater than another abrasion loss for drawing roller.

14. a kind of method for manufacturing glass tape, this method comprises:

A) glass tape with width is formed；

B) operation includes at least a pair of drawing roller arrangement for drawing roller and at least a pair of of driving device, at least a pair of of drawing roller Roller and second is drawn including first and draws roller, and at least a pair of of driving device includes driving described first to draw the first of roller to drive Dynamic device and the second driving device for driving the second drawing roller, thus along path drawing glassribbons, the drawing is drawn Path is in be laterally extended with the width, so that first draws roller with the rotation of the first rotation condition with a table of drawing glassribbons Face, and the rotation of the second drawing roller is rotated with the second rotation condition with another surface of drawing glassribbons；

C) determine the first driving device for being supplied to driving the first drawing roller the first driving current whether be supplied to driving the Second driving current of the second driving device of two drawing rollers is mutually significantly different；And

D) when determining that the first and second driving currents are mutually significantly different, change at least one in the first and second rotation conditions It is a.

15. method as claimed in claim 14,

Wherein, when the difference between first driving current and second driving current is more than preset range, step c) First driving current and second driving current are determined as mutually significantly different.

16. method as claimed in claim 14,

Wherein, step c) includes:

C1) monitoring is supplied to the first driving current sequence of first driving device and is supplied to the second driving at regular intervals respectively Second driving current sequence of device；

C2) the first driving current sequence and the second driving current sequence are averaged；And

C3 the average value that the first driving current sequence) is respectively adopted and the second driving current sequence are as described first Driving current and second driving current, to carry out the determination.

17. method as claimed in claim 14,

Wherein, the first and second rotation conditions respectively include the predetermined angular speed of the first and second drawing rollers, and

Step d) includes increasing by first and second to draw the predetermined angle speed that driven in roller by smaller driving current draws roller Degree.

18. method as claimed in claim 14,

Wherein, step d) includes:

D1 it) reduces that driven in the first and second drawing rollers by lower driving current and draws the predetermined diameter of roller.

19. method as claimed in claim 18,

Wherein, in step d1), so that described predetermined diameter for drawing roller reduces predetermined amount.

20. method as claimed in claim 18,

Wherein, the first and second rotation conditions respectively include the predetermined angular speed of the first and second drawing rollers, and

Wherein, step d) further includes the d2 after step d1)): it responds the predetermined diameter that draws roller and reduces, increase that Draw the predetermined angular speed of the function as its predetermined diameter of roller.

21. method as claimed in claim 14,

Its further include: at least one block of sheet glass is separated from glass tape using sheet separation device,

The sheet separation device includes: the disengaging time section when sheet separation device is contacted with glass tape, and when sheet material point Time section when being detached from from device and glass tape, and

Wherein, step c) includes:

C1) during the time section of sheet separation device, the first and second driving currents are monitored, and

C2) during the time section of sheet separation device, the determination is carried out using the first and second driving currents.

22. method as claimed in claim 14,

Its further include: step c) and d) is repeated,

Wherein, step c) include when following situation, termination repeat and without to step d): although being repeated predetermined time Several step d), but still determine that the difference between the first driving current and the second driving current continues growing, the step D) at least one of described first and second rotation condition is made to change.

23. a kind of glass manufacturing equipment comprising:

Forming device, configuration are shaped to the glass tape with width；

Roller arrangement is pulled, is configured to from forming device along drawing path drawing glassribbons, the drawing path and the width For degree in being laterally extended, the drawing roller arrangement includes that at least a pair draws roller and at least a pair of of driving device, described at least a pair of Drawing roller includes that the first drawing roller and second draw roller, and at least a pair of of driving device includes that driving described first draws roller First driving device and the second driving device for driving the second drawing roller；And

Control device is configured to:

The drawing roller arrangement is run, so that the first drawing roller is rotated with the first rotation condition, draws glass with the first draw conditions One surface of glass band, and the second drawing roller is rotated with the second rotation condition, with the second draw conditions drawing glassribbons Another surface；

Determine be supplied to driving first drawing roller first driving device the first driving current whether be supplied to driving second The second driving current for drawing the second driving device of roller is mutually significantly different；And

When determining that the first driving current and the second driving current are mutually significantly different, change in the first and second rotation conditions At least one.

24. glass manufacturing equipment as claimed in claim 23,

Wherein, the control device is configured to: when the difference between first and second driving current is more than preset range, by the One and second draw conditions be assessed as mutually it is significantly different.

25. glass manufacturing equipment as claimed in claim 23,

Wherein, the control device is configured to:

Monitoring is supplied to the first driving current sequence of first driving device and is supplied to the second driving dress at regular intervals respectively The the second driving current sequence set；

The first driving current sequence and the second driving current sequence are averaged；And

The average value of the first driving current sequence and the average value of the second driving current sequence is respectively adopted as institute The first driving current and second driving current are stated, to carry out the determination.

26. glass manufacturing equipment as claimed in claim 23,

Wherein, the first and second rotation conditions respectively include the predetermined angular speed of the first and second drawing rollers, and

Wherein, control device is configured to: being increased that driven in the first and second drawing rollers by lower driving current and is drawn roller Predetermined angular speed.

27. glass manufacturing equipment as claimed in claim 23,

Wherein, control device is configured to: being reduced that driven in the first and second drawing rollers by lower driving current and is drawn roller Predetermined diameter.

28. glass manufacturing equipment as claimed in claim 27,

Wherein, control device is arranged so that that described predetermined diameter for drawing roller reduces predetermined amount.

29. glass manufacturing equipment as claimed in claim 27,

Wherein, the first and second rotation conditions respectively include the angular speed of the first and second drawing rollers, and

Wherein, control device is configured to: being responded the predetermined diameter that draws roller and is reduced, increasing the conduct that draws roller, its is pre- Determine the predetermined angular speed of the function of diameter.

30. glass manufacturing equipment as claimed in claim 23,

Its further include: sheet separation device, the sheet separation device are configured to separate at least one block of sheet glass, institute from glass tape Stating sheet separation device includes: the disengaging time section when sheet separation device is contacted with glass tape, and works as sheet separation device Time section when being detached from glass tape,

Wherein, the control device is configured to:

During the time section of sheet separation device, the first and second driving currents are monitored；And

During the time section of sheet separation device, the determination is carried out using the first and second driving currents.

31. glass manufacturing equipment as claimed in claim 23,

Wherein, control unit is configured to:

Repeat the determination and change；And

Terminated when following situation repeat and without to the change: although pre-determined number has been repeated in the change, It is that difference between the first driving current and the second driving current continues to increase.

32. glass manufacturing equipment as claimed in claim 23,

Wherein, the first and second drawing rollers are arranged on one in two marginal portions of glass tape, and the width is described Extend between two marginal portions, so that drawing drawing glassribbons between roller first and second.

33. glass manufacturing equipment as claimed in claim 23,

Wherein, it includes that an at least row draws roller pair that described at least a pair, which draws roller, and an at least row draws roller to including difference Two pairs of drawing rollers being arranged on two marginal portions of glass tape.

34. a kind of drawing roller apparatus comprising:

Roller arrangement is pulled, the glass tape that there is width along path drawing is drawn, the drawing path and the width are configured to For degree in being laterally extended, the drawing roller arrangement includes that at least a pair draws roller and at least a pair of of driving device, described at least a pair of Drawing roller includes that the first drawing roller and second draw roller, and at least a pair of of driving device includes that driving described first draws roller First driving device and the second driving device for driving the second drawing roller；And

Control device is configured to:

The drawing roller arrangement is run, so that the first drawing roller is rotated with the first rotation condition, draws glass with the first draw conditions One surface of glass band, and the second drawing roller is rotated with the second rotation condition, with the second draw conditions drawing glassribbons Another surface；

Determine be supplied to driving first drawing roller first driving device the first driving current whether be supplied to driving second The second driving current for drawing the second driving device of roller is mutually significantly different；And

When determining that the first driving current and the second driving current are mutually significantly different, change in the first and second rotation conditions At least one.