CN102910811B - The method of chalker and maintenance chalker press pressure - Google Patents
The method of chalker and maintenance chalker press pressure Download PDFInfo
- Publication number
- CN102910811B CN102910811B CN201210131494.8A CN201210131494A CN102910811B CN 102910811 B CN102910811 B CN 102910811B CN 201210131494 A CN201210131494 A CN 201210131494A CN 102910811 B CN102910811 B CN 102910811B
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- relative displacement
- mobile unit
- unit
- chalker
- axis motor
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Classifications
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B33/00—Severing cooled glass
- C03B33/02—Cutting or splitting sheet glass or ribbons; Apparatus or machines therefor
- C03B33/04—Cutting or splitting in curves, especially for making spectacle lenses
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B33/00—Severing cooled glass
- C03B33/02—Cutting or splitting sheet glass or ribbons; Apparatus or machines therefor
- C03B33/023—Cutting or splitting sheet glass or ribbons; Apparatus or machines therefor the sheet or ribbon being in a horizontal position
- C03B33/027—Scoring tool holders; Driving mechanisms therefor
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B33/00—Severing cooled glass
- C03B33/02—Cutting or splitting sheet glass or ribbons; Apparatus or machines therefor
- C03B33/023—Cutting or splitting sheet glass or ribbons; Apparatus or machines therefor the sheet or ribbon being in a horizontal position
- C03B33/033—Apparatus for opening score lines in glass sheets
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B33/00—Severing cooled glass
- C03B33/02—Cutting or splitting sheet glass or ribbons; Apparatus or machines therefor
- C03B33/023—Cutting or splitting sheet glass or ribbons; Apparatus or machines therefor the sheet or ribbon being in a horizontal position
- C03B33/037—Controlling or regulating
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
The present invention relates to a kind of chalker and a kind of method keeping chalker press pressure.Chalker comprises Z axis motor, mobile unit, pressing unit, pressure control unit, relative displacement sensing cell and controller.Mobile unit is moved by Z axis motor.Cylinder body is connected to mobile unit.Pressing unit can move vertically and comprise the scribe head being connected to cylinder piston bar and the tracing wheel be arranged on scribe head.The internal pressure that pressure control unit controls cylinder body produces press pressure to allow pressing unit.Relative displacement sensing cell measures the relative displacement between pressing unit and mobile unit.Controller receives relative displacement signal from relative displacement sensing cell and actuate signal is transferred to Z axis motor.
Description
Technical field
Present invention relates in general to chalker and keep the method for chalker press pressure, and relate more specifically to a kind of like this chalker and a kind of method keeping chalker press pressure, described chalker is even when ruling to face glass, even if the surface of face glass is bending, the press pressure being applied to face glass also can be kept even.
Background technology
In general, LCD (liquid-crystal display), LED (photodiode) indicating meter, organic EL (electroluminescent) panel, inorganic EL panel, transparent projection instrument panel, episcopic projector panel etc. are widely used as flat-panel monitor.Produce this flat-panel monitor to comprise female face glass of fragility (hereinafter referred to as ' face glass ') is cut into predetermined size.
Glass-cutting panel comprises and moves the tracing wheel be made up of such as adamantine material to form the scratching process of line and pressing face glass on glass panels and apply moment of flexure thereon or use steam and expand the disconnection process of the crackle of line along the suggestion line of cut that formed on glass panels under stress.
Fig. 1 illustrates the typical case of the chalker for carrying out scratching process.The structure of chalker will be described below.
As shown in Figure 1, chalker 1000 comprises pedestal 100, Z axis motor 200, mobile unit 300 and pressing unit 400.Z axis motor 200 is arranged on pedestal 100.Mobile unit 300 is moved vertically by Z axis motor 200.Cylinder body 310 is connected to mobile unit 300.The scribe head 410 that pressing unit 400 comprises the piston rod 311 being connected to cylinder body 310 and the tracing wheel 422 be arranged on scribe head 410 bottom.Pressing unit 400 is configured to move vertically relative to mobile unit 300.
Z axis motor 200 is fixed to pedestal 100.Conveyor screw 210 is connected to Z axis motor 200, and mobile unit 300 is connected to conveyor screw 210, and mobile unit 300 is moved vertically by the operation of Z axis motor 200.
The guide member such as comprising the linear guide 110 of guide rail (not shown) is arranged on pedestal 100, to guide mobile unit 300.
Mobile unit 300 comprises the movable block 320 being connected to conveyor screw 210 and the movable frame 330 being fixed to movable block 320.Movable frame 330 is connected to linear guide 110, makes movable frame 330 can along the to-and-fro movement vertically of the guide rail of pedestal 100.
Cylinder body 310 is fixed to movable block 320, and the bar 311 of cylinder body 310 is connected to pressing unit 400.
Pressing unit 400 comprises the scribe head 410 being connected to piston rod 311 and the wheel unit 420 being connected to scribe head 410 bottom.
Wheel unit 420 comprises and to be arranged on below scribe head 410 so that the wheel keeper that can flatly rotate 421 and be connected to the tracing wheel 422 of wheel keeper 421.
Preferably, scribe head 410 is connected to linear guide 110 or the cross roller arrangement for guiding 120 of pedestal 100, and scribe head 410 can be moved vertically.
The pressure control unit 500 of such as setter etc. is connected to cylinder body 300.The function of pressure control unit 500 keeps the press pressure being applied to face glass (P, see Fig. 2) constant.
Such as, as shown in Figure 2, if there is curved part in face glass, in scratching process, piston rod 311 moves up suddenly.In the case, pressure control unit 500 operates and controls the pressure in cylinder body 310, makes tracing wheel 422 press the maintain constant pressure of face glass P.
But chalker speed of movement in scratching process is actually quickish, setter 500 is made to be difficult to the bending change of responsive glass panel P rapidly and to change the internal pressure of cylinder body 310.As a result, press pressure can not be applied to face glass P surface equably, causes defective product.
Summary of the invention
Therefore, the present invention is directed to the above problem produced in the prior art, and the object of this invention is to provide a kind of chalker and a kind of method keeping chalker press pressure, described chalker can keep the press pressure being applied to face glass even, even if face glass air spots while to face glass line.
In order to realize above object, in one aspect, the invention provides a kind of chalker, comprising: Z axis motor; The mobile unit moved up or down by Z axis motor, cylinder body is connected to mobile unit; Be configured to the pressing unit that can move up or down relative to mobile unit, pressing unit comprises scribe head and tracing wheel, and scribe head is connected to the piston rod of cylinder body at its first end place, and tracing wheel is arranged on the second end of scribe head; Control the internal pressure of cylinder body to allow to press the pressure control unit that unit produces press pressure; Measure the relative displacement sensing cell of the relative displacement between pressing unit and mobile unit; And receive relative displacement signal from relative displacement sensing cell and actuate signal be transferred to the controller of Z axis motor.
Relative displacement sensing cell can be arranged on mobile unit and pressing unit, or can be arranged on mobile unit or pressing unit.
In another aspect, the invention provides a kind of chalker, comprising: Z axis motor; The mobile unit moved up or down by Z axis motor, cylinder body is connected to mobile unit; Be configured to the pressing unit that can move up or down relative to mobile unit, pressing unit comprises scribe head and tracing wheel, and scribe head is connected to the piston rod of cylinder body at its first end place, and tracing wheel is arranged on the second end of scribe head; Control the internal pressure of cylinder body to allow to press the pressure control unit that unit produces press pressure; Measure the relative displacement sensing cell of the relative displacement between mobile unit and face glass surface; And receive relative displacement signal from relative displacement sensing cell and actuate signal be transferred to the controller of Z axis motor.
Relative displacement sensing cell can comprise the gap sensor be arranged in mobile unit.
Gap sensor can be arranged on front side relative to the direction of chalker movement.
In another aspect, the invention provides a kind of method keeping chalker press pressure, described method comprises: use pressure control unit to control the internal pressure of cylinder body, and rule to face glass; The relative displacement between mobile unit and pressing unit is measured while face glass is rule; And transfer signals to Z axis motor when the relative displacement change recorded, and along the displacement of directional compensation mobile unit of relative displacement change.
In another aspect, the invention provides a kind of method keeping chalker press pressure, described method comprises: use pressure control unit to control the internal pressure of cylinder body, and rule to face glass; The gap be fixed between the sensor measurement mobile unit of mobile unit and face glass is used while to face glass line; And transfer signals to Z axis motor when the gap change recorded, and the displacement of the directional compensation mobile unit changed along gap.
The measurement in gap can be carried out in front side relative to the direction of chalker movement.
In addition, the pitch that the compensate for displacement in compensation process is multiplied by by the revolution of Z axis motor the conveyor screw being connected to Z axis motor is determined.
In addition, the velocity of variation of relative displacement may correspond to the flexible speed of piston rod.
Accompanying drawing explanation
By the detailed description below in conjunction with accompanying drawing, aforesaid and other object, the feature and advantage of the present invention more clearly can be understood, wherein:
Fig. 1 is the stereographic map of the chalker illustrated according to routine techniques;
Fig. 2 is the schematic side elevation of the conventional chalker of the curved surface process illustrated along face glass;
Fig. 3 illustrates the stereographic map according to chalker of the present invention;
Fig. 4 is the part amplification stereogram of the installation constitution of the displacement sensor that Fig. 3 is shown;
Fig. 5 is the schematic diagram of the embodiment of the structure illustrated according to the chalker keeping press pressure constant of the present invention;
Fig. 6 is the schematic diagram of another embodiment of the structure illustrated according to the chalker keeping press pressure constant of the present invention; And
Fig. 7 is the schema of the method for the press pressure kept in the structure of Fig. 5.
Embodiment
Hereinafter describe the preferred embodiments of the present invention in detail with reference to Fig. 3 to Fig. 7.Should, with reference to accompanying drawing, use identical Reference numeral to represent same or analogous parts in different drawings now.
As shown in Figure 3 and Figure 4, chalker 1000 according to the present invention comprises pedestal 100, Z axis motor 200, mobile unit 300, pressing unit 400 and pressure control unit 500.Z axis motor 200 is arranged on pedestal 100.Mobile unit 300 is moved vertically by Z axis motor 200.Cylinder body 310 is connected to mobile unit 300.Pressing unit 400 comprises scribe head 410 and tracing wheel 422, and scribe head 410 is connected to the piston rod 311 of cylinder body 310 at its first end place, and tracing wheel 422 is arranged on the second end of scribe head 410.Pressing unit 400 is set to move vertically relative to mobile unit 300.Pressure control unit 500 controls the internal pressure of cylinder body 310.
Particularly, Z axis motor 200 is fixed to pedestal 100.Conveyor screw 210 is connected to Z axis motor 200, and mobile unit 300 is connected to conveyor screw 210, and mobile unit 300 is moved vertically by the operation of Z axis motor 200.
The guide member such as comprising the linear guide 110 of guide rail (not shown) is arranged on pedestal 100, to guide mobile unit 300.
Mobile unit 300 comprises the movable block 320 being connected to conveyor screw 210 and the movable frame 330 being fixed to movable block 320.Movable frame 330 is connected to linear guide 110, makes movable frame 330 can along the to-and-fro movement vertically of the guide rail of pedestal 100.
Cylinder body 310 is fixed to movable block 320, and the bar 311 of cylinder body 310 is connected to pressing unit 400.
Pressing unit 400 comprises the scribe head 410 being connected to piston rod 311 and the wheel unit 420 being connected to scribe head 410 bottom.
Wheel unit 420 comprises and to be arranged on below scribe head 410 so that the wheel keeper that can flatly rotate 421 and be connected to the tracing wheel 422 of wheel keeper 421.
Preferably, scribe head 410 is connected to linear guide 110 or the cross roller guide member 120 of pedestal 100, and scribe head 410 can be moved vertically.
As a result, mobile unit 300 moves vertically by the rotation of Z axis motor 200, and presses unit 400 and can be moved vertically relative to mobile unit 300 by the cylinder body 310 be arranged in mobile unit 300.
Known setters etc. can be used as pressure control unit 500.
As shown in Figure 4, displacement sensor 610 is arranged on mobile unit 300 and/or pressing unit 400.The relative displacement between mobile unit 300 and pressing unit 400 measured by displacement sensor 610.
Tangent displacement sensor and non-contact displacement transducer all can be used as displacement sensor 610.
The such as differential transformer of LVDT (linear variable differential mutual inductor) etc. is the representative illustration of tangent displacement sensor.This differential transformer comprises three coils (main coil and two sw) and a moving iron core, and according to following operate: namely alternating current makes main coil magnetize, induction voltage in each sw is caused by the iron core of mobile tracking target object, and voltage combines in difference mode, thus calculating voltage is poor, and output displacement thus.
If use tangent displacement sensor in the present invention, three coils and moving iron core can be arranged in mobile unit 300 and pressing unit 400 respectively, or are arranged on respectively in pressing unit 400 and mobile unit 300.
Eddy current sensor, optical pickocff, sonac etc. are the representative illustration of non-contact displacement transducer.
Eddy current sensor operates with high frequency magnetic field.Particularly, high-frequency current is applied to the coil be arranged in sensor head, thus produces high frequency magnetic field.If there is target object in this magnetic field, magnetic flux is through the surface of target object, and vertically eddy current flows through target object due to electromagnetic induction, thus changes the impedance of cell winding.This phenomenon causes the change vibrated.Eddy current sensor uses the change of vibration, thus measures the distance of target object.
Particularly, when the distance between target object and sensor head reduces, amplitude reduces, and the phase differential between the waveform recorded and reference waveform increases.Therefore, by measuring amplitude and phase differential can obtain and distance between target object and sensor head is almost completely proportional value.
If use eddy current sensor in the present invention, sensor head or be arranged in mobile unit 300 or be arranged in pressing unit 400, and be configured so that magnetic flux is through another surface.
Optical pickocff comprises luminescence unit and optical element, and they are respectively installed to the object of relative to each other movement.In addition, scale card and mobile scale are arranged between luminescence unit and optical element, and are arranged on respectively on the object of relative to each other movement.The operating method of optical pickocff is, when mobile scale moves relative to scale card, optical element reads the luminance signal of the light between scale card and mobile scale, thus measures the displacement between them.Linear scale is the representative illustration of optical pickocff.
If use optical pickocff in the present invention, as shown in Figure 3 and Figure 4, the present invention can be configured to and luminescence unit and mobile scale 611 are arranged on pressing unit 400, and the scale reader 612 comprising optical element and scale card is arranged in mobile unit 300.
Such as, the mobile scale 611 that is configured to shown in Fig. 4 and Fig. 5 is fixed to scribe head 410, and scale reader 610 is connected to movable frame 330.
The principle of work of sonac is, sensor head produces ultrasonic wave and also receives the echo of being reflected by target object, and then sensor calculates the timed interval sent between signal and reception of echoes, thus determines the distance of target object.
If use sonac in the present invention, sensor head or be arranged in mobile unit 300 or be arranged on pressing unit 400, and reflector can be arranged on the other to improve the reliability of reception of echoes.Due to the characteristic of sonac, measurable distance range is wide.Therefore, sonac can easily be applicable to device of the present invention, and distance no matter between mobile unit 300 and pressing unit 400 how.
In addition, as shown in Figure 6, the present invention can be configured to, and makes gap sensor 620 be arranged in the mobile unit 300 and gap measured between it and face glass P surface.
Especially, if gap sensor 620 is arranged on front side relative to chalker 1000 relative to the direction that face glass P moves forward, gap sensor 620 can detect the bending of face glass P before the Contact of device and bend, thus can make by the controller 700 described at this paper more accurately and easily control chalker, and strengthen the performance of the change that Z axis motor 200 responsive glass panel P bends further below.
For this reason, the present invention can be configured to direction that gap sensor 620 carries relative to face glass P based on tracing wheel 422 respectively in front side, rear side, left side and right side place be arranged in mobile unit 300, and optionally use gap sensor 620 according to face glass P relative to the travel direction of chalker 1000.
If displacement sensor 610 or gap sensor 620 measure relative displacement and produce coherent signal, controller 700 responds relative displacement signal and actuate signal is transferred to Z axis motor 200.
In other words, Z axis motor 200 operates under the control of controller 700, mobile unit 300 moves along pressing unit 400 relative to the direction of the change in displacement of mobile unit 300 or the direction that changes along the gap between mobile unit 300 and face glass P surface is moved thus, thus make the change of the internal pressure of cylinder body 310 minimum, keep press pressure constant thus.
Displacement sensor 610 or gap sensor 620 form relative displacement sensing cell 600.
The embodiment kept according to the method for the press pressure of chalker of the present invention is described with reference to Fig. 5 and Fig. 7 hereinafter.
Fig. 7 illustrates the method for the press pressure keeping chalker, supposes that the displacement sensor 610 that is configured to of chalker is arranged on mobile unit 300 and/or pressing unit 400.
First, after the internal pressure of cylinder body 310 has been adjusted to the value of the predetermined pressure corresponding to pressing face glass P by pressure control unit 500, scribing operation has been carried out.
While carrying out scribing operation, the relative displacement between mobile unit 300 and pressing unit 400 measured by displacement sensor 610.
If it is constant that relative displacement remains on initial value, this means that face glass P does not bend, so continue normal scribing operation.
Meanwhile, if there is the change of the relative displacement recorded in scribing operation process due to the bending of face glass P, the velocity of variation of relative displacement is transferred to controller 700.Such as, the velocity of variation of the relative displacement recorded refers to the speed that piston rod 311 is flexible.
Controller 700 will correspond to the Signal transmissions of relative displacement velocity of variation to Z axis motor 200, thus drives conveyor screw 210, and the direction that mobile unit 300 is changed along relative displacement is moved, and compensates the change of relative displacement thus.
Compensate the pitch that the compensate for displacement in relative displacement conversion step is multiplied by by the revolution of Z axis motor 200 conveyor screw 210 being connected to Z axis motor 200 to determine.
Like this, owing to compensate for the change of relative displacement, the speed that piston rod 311 reality is stretched is constant, thus keeps press pressure default in pressure control unit 500.
That is, responsive glass panel P bending in scribing operation process, mobile unit 300 moves up or down, thus the press pressure being applied to face glass P is remained on preset value.
In the accompanying drawings, although bending the raising up of hypothesis face glass P, even when the bending of face glass P also can apply the present invention in an identical manner to during lower convexity.
As mentioned above, in the present invention, although the face bend of face glass, the press pressure being applied to face glass when ruling to face glass can remain on preset value, thus prevents scribing operation failure.
Although in order to exemplary purpose describes embodiments of the invention, it will be apparent to one skilled in the art that and do not departing under the scope of the invention disclosed in claims and real situation, various different amendment, increase and replacement can be carried out.
Claims (5)
1. a chalker, comprising:
Z axis motor;
The mobile unit moved up or down by described Z axis motor, cylinder body is connected to described mobile unit;
Be configured to the pressing unit that can move up or down relative to described mobile unit, described pressing unit comprises scribe head and tracing wheel, described scribe head is connected to the piston rod of described cylinder body at its first end place, and described tracing wheel is arranged on the second end of described scribe head;
Control the internal pressure of described cylinder body with the pressure control unit allowing described pressing unit to produce press pressure;
Measure the relative displacement sensing cell of the relative displacement between described pressing unit and described mobile unit; And
Receive relative displacement signal from described relative displacement sensing cell and actuate signal be transferred to the controller of described Z axis motor.
2. chalker according to claim 1, wherein, described relative displacement sensing cell is arranged on described mobile unit and described pressing unit, or is arranged on described mobile unit or described pressing unit.
3. keep a method for the press pressure of chalker according to claim 1, described method comprises:
Use pressure control unit to control the internal pressure of cylinder body, and face glass is rule;
The relative displacement between mobile unit and pressing unit is measured while face glass is rule; And
Transfer signals to Z axis motor when the relative displacement change recorded, and along relative displacement change directional compensation described in the displacement of mobile unit.
4. method according to claim 3, wherein, the compensate for displacement in compensation process is multiplied by the conveyor screw being connected to described Z axis motor pitch by the revolution of described Z axis motor is determined.
5. method according to claim 4, wherein, the speed that the corresponding piston rod of the velocity of variation of relative displacement is flexible.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2011-0076538 | 2011-08-01 | ||
| KR1020110076538A KR101807493B1 (en) | 2011-08-01 | 2011-08-01 | A scribing apparatus and a method for maintaining press load thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102910811A CN102910811A (en) | 2013-02-06 |
| CN102910811B true CN102910811B (en) | 2015-07-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210131494.8A Active CN102910811B (en) | 2011-08-01 | 2012-05-02 | The method of chalker and maintenance chalker press pressure |
Country Status (3)
| Country | Link |
|---|---|
| KR (1) | KR101807493B1 (en) |
| CN (1) | CN102910811B (en) |
| TW (1) | TWI577649B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104625721B (en) * | 2015-02-05 | 2017-01-11 | 苏州鸿普精密模具有限公司 | Inductance type air cylinder displacement ejection module of compressor inner core pressing fit machine |
| CN104690367B (en) * | 2015-02-11 | 2017-08-25 | 长春理工大学 | A kind of novel and multifunctional mechanical scratching knife rest |
| KR102605919B1 (en) * | 2016-03-17 | 2023-11-27 | 주식회사 탑 엔지니어링 | Scribing apparatus and scribing method |
| CN106956241A (en) * | 2017-03-23 | 2017-07-18 | 天津比亚迪汽车有限公司 | A kind of equidistant scriber of electronics |
| KR102626399B1 (en) * | 2020-10-19 | 2024-01-18 | 주식회사 탑 엔지니어링 | Scribing apparatus |
| CN113735429B (en) * | 2021-08-24 | 2023-09-08 | 芜湖东旭光电科技有限公司 | Glass scribing and cutting device and cutting method thereof |
| KR20240000723U (en) | 2022-10-26 | 2024-05-03 | 박기범 | Curve shaped dust brush |
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| JP2001139337A (en) * | 1999-11-11 | 2001-05-22 | Toshiba Corp | Working device, glass scribing device and glass cutting method |
| JP2005225730A (en) * | 2004-02-13 | 2005-08-25 | Amagasaki Kosakusho:Kk | Scribe head device for brittle material and method of scribing brittle material |
| WO2008126502A1 (en) * | 2007-03-30 | 2008-10-23 | Thk Co., Ltd. | Scribe device and scribe method |
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2011
- 2011-08-01 KR KR1020110076538A patent/KR101807493B1/en active IP Right Grant
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- 2012-05-02 CN CN201210131494.8A patent/CN102910811B/en active Active
- 2012-08-01 TW TW101127762A patent/TWI577649B/en active
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| US6152003A (en) * | 1996-11-07 | 2000-11-28 | Bullmer Spezialmaschinen Gmbh | Cutting device with elevation regulation |
| CN1431976A (en) * | 2000-03-23 | 2003-07-23 | 坂东机工株式会社 | Method and device for processing glass pane |
| CN1891422A (en) * | 2005-07-08 | 2007-01-10 | 塔工程有限公司 | Apparatus for scribing a substrate in use for a flat panel display |
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Also Published As
| Publication number | Publication date |
|---|---|
| TW201307224A (en) | 2013-02-16 |
| KR20130014837A (en) | 2013-02-12 |
| CN102910811A (en) | 2013-02-06 |
| KR101807493B1 (en) | 2017-12-11 |
| TWI577649B (en) | 2017-04-11 |
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