CN102219368B - System and method for controlling cutting wheel pressure of TFT-LCD (thin film transitor-liquid crystal display) glass cutting machine - Google Patents

System and method for controlling cutting wheel pressure of TFT-LCD (thin film transitor-liquid crystal display) glass cutting machine Download PDF

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Publication number
CN102219368B
CN102219368B CN2011100908639A CN201110090863A CN102219368B CN 102219368 B CN102219368 B CN 102219368B CN 2011100908639 A CN2011100908639 A CN 2011100908639A CN 201110090863 A CN201110090863 A CN 201110090863A CN 102219368 B CN102219368 B CN 102219368B
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China
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cutting
tft
air pressure
pressure
glass
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CN2011100908639A
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Chinese (zh)
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CN102219368A (en
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安峰
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深圳市晶向科技有限公司
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00Technologies relating to the processing of minerals
    • Y02P40/50Glass production, e.g. reusing waste heat during processing or shaping
    • Y02P40/57Improving the yield, e-g- reduction of reject rates

Abstract

The invention discloses a system and method for controlling cutting wheel pressure of a TFT-LCD glass cutting machine. The system comprises a cutting mechanism, an electric proportioning valve for controlling the cutting wheel pressure of the cutting mechanism and a controller for sending controlling signals to the electric proportioning valve according to preset pressure. The signal input part of the electric proportioning valve is connected with the controller and the signal output part is connected with the cutting mechanism through a pneumatic tube. When the cutting mechanism cuts a first surface of TFT-LCD glass, the controller controls the electric proportioning valve to deliver first air pressure to the cutting mechanism; when the cutting mechanism cuts a second surface of the TFT-LCD glass, the controller controls the electric proportioning valve to deliver second air pressure to the cutting mechanism, and the second air pressure is greater than the first air pressure. According to the invention, during the cutting of the TFT-LCD glass, the controller sends controlling signals to the electric proportioning valve and the electric proportioning valve delivers different pressure according to the controlling signals; therefore, full automatic control of the cutting is realized, and defective products are eliminated.

Description

The break bar pressure control system and the method for TFT-LCD glass cutting machine
Technical field
The present invention relates to the glass cutting technical field, particularly a kind of break bar pressure control system and method for TFT-LCD glass cutting machine.
Background technology
Cutting machine need give break bar a suitable pressure according to the glass of unlike material, different thickness when cutting TFT-LCD glass; If the pressure of break bar is too little, then can't be with severing of glass, and the pressure of break bar is too big; The glass chopping be can cause, thereby defective products and waste product produced.
Particularly TFT-LCD glass all is just to cut after fitting, and what the tangent line of its A surface glass and B surface glass had does not overlap, and therefore need after having cut the A face, cut the B face again.But therefore the required cutting pressure of required cutting pressure and cutting A face and inequality, need regulate cutting pressure when cutting B face when cutting B face.
And the traditional glass cutting machine can only be set a pressure, can only obtain the cutting pressure of an A surface glass like this, and cutting B also uses this pressure during face, thereby makes that the defective products and the waste product of cutting machine cutting are more.
Thereby the cutting technique of existing TFT-LCD glass is still waiting to improve and improve.
Summary of the invention
In view of the weak point of above-mentioned prior art, the object of the present invention is to provide a kind of break bar pressure control system and method for TFT-LCD glass cutting machine, can regulate the pressure of break bar automatically, thereby eliminate the defective products of cutting machine cutting.
In order to achieve the above object, the present invention has taked following technical scheme:
A kind of break bar pressure control system of TFT-LCD glass cutting machine; Wherein, Comprise the cutting mechanism that is used for glass-cutting, be used for the electric Proportion valve and the unit that is used for sending to electric Proportion valve corresponding control signal of the break bar pressure of Cutting Control mechanism according to preset pressure data; The signal input part of said electric Proportion valve is connected with unit, and output terminal is connected with cutting mechanism through pneumatic tube; Wherein, when first of cutting mechanism cutting TFT-LCD glass, unit control electric Proportion valve is carried first air pressure to cutting mechanism; When second of cutting mechanism cutting TFT-LCD glass, unit control electric Proportion valve is carried second air pressure to cutting mechanism, and second air pressure is greater than first air pressure.
The break bar pressure control system of described TFT-LCD glass cutting machine, wherein, the thickness of TFT-LCD glass is 0.4mm, and said first air pressure is 0.04MPa, and second air pressure is 0.045-0.048MPa.
The break bar pressure control system of described TFT-LCD glass cutting machine, wherein, cutting mechanism comprises knife rest, is used to that the cutter shaft of break bar is installed and is used to control the motor that knife rest goes up and down; Motor and cutter shaft all are installed on the knife rest, and motor is connected with unit.
The break bar pressure control system of described TFT-LCD glass cutting machine, wherein, the top above the cutter shaft has cavity portion, and the pneumatic tube of said electric Proportion valve is communicated with this cavity portion.
A kind of method of controlling the break bar pressure of TFT-LCD glass cutting machine wherein, comprising:
Send control signal corresponding according to preset pressure data to electric Proportion valve by unit;
Electric Proportion valve is carried corresponding air pressure according to this wave to cutting mechanism;
By the cutting mechanism glass-cutting;
Wherein, when first of cutting mechanism cutting TFT-LCD glass, unit control electric Proportion valve is carried first air pressure to cutting mechanism; When second of cutting mechanism cutting TFT-LCD glass, unit control electric Proportion valve is carried second air pressure to cutter shaft, and second air pressure is greater than first air pressure.
Described method, wherein, the thickness of every sheet glass is 0.4mm, and said first air pressure is 0.04MPa, and second air pressure is 0.045-0.048MPa.
The break bar pressure control system and the method for TFT-LCD glass cutting machine provided by the invention; Send control signal corresponding according to preset pressure data to electric Proportion valve through unit; Electric Proportion valve is according to the pressure of the corresponding Cutting Control of this wave mechanism; When glass-cutting, realized full-automatic control, eliminated bad product.
The system of TFT-LCD glass cutting machine provided by the invention is adapted to the cutting to TFT-LCD glass especially, and when first of cutting mechanism cutting TFT-LCD glass, electric Proportion valve is carried first air pressure to cutting mechanism; When second of cutting mechanism cutting TFT-LCD glass; Electric Proportion valve is carried second air pressure to cutter shaft, and second air pressure is greater than first air pressure, and these two air pressure produce control signal corresponding automatically by unit; Eliminated and cut bad phenomenon, reduced scrap rate.
Description of drawings
The structural representation of the break bar pressure control system of the TFT-LCD glass cutting machine that Fig. 1 provides for the embodiment of the invention.
Structural representation after the cutting of the TFT-LCD glass that Fig. 2 provides for the embodiment of the invention.
Fig. 3 is the method flow diagram of the break bar pressure of control TFT-LCD glass cutting machine.
Embodiment
The present invention provides a kind of break bar pressure control system and method for TFT-LCD glass cutting machine, and is clearer, clear and definite for making the object of the invention, technical scheme and effect, below with reference to accompanying drawing and give an actual example to further explain of the present invention.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
See also Fig. 1; The TFT-LCD that the embodiment of the invention provides (Thin Film Transistor-Liquid Crystal Display; TFT-liquid-crystal display) the break bar pressure control system of glass cutting machine; This TFT-LCD glass cutting machine is mainly used in TFT-LCD glass is carried out straight cuts, and it comprises cutting mechanism 11, unit 21 and electric Proportion valve 31.The signal input part of said electric Proportion valve 31 is connected with air feeder 41 with unit 21 respectively, and output terminal is connected with cutting mechanism 11 through the pneumatic tube (not shown).
Wherein, Said cutting mechanism 11 is used for the glass of unlike material, different thickness is cut; Unit 21 is an IPC; In this unit, store the pressure data of unlike material, the various glass cuttings of different thickness; Unit 21 is used for carrying a control signal corresponding to give electric Proportion valve 31 according to preset pressure data (being stored in the pressure data of unit) when cutting, and 31 of this electric Proportion valves are controlled air feeder according to this wave and exported corresponding air pressure, thus the air pressure of control electric Proportion valve output.
Please continue to consult Fig. 1, the cutting mechanism 11 of TFT-LCD glass cutting machine comprises knife rest 111, is used to that the cutter shaft 112 of break bar (not shown) is installed and is used to control the motor 113 that knife rest 111 goes up and down.Motor 113 all is installed on the knife rest 111 with cutter shaft 112, and motor 113 is connected with unit 21.When cutting mechanism 11 cuttings; Send a wave drive-motor 113 by unit 21 to motor 113 earlier; Drive knife rest 111 by motor 113 afterwards and descend, and export the pressure that corresponding air pressure is controlled break bar to break bar, afterwards by the break bar glass-cutting by electric Proportion valve 31.
In the present embodiment, the top of cutter shaft 112 has cavity portion (not shown), and the pneumatic tube of said electric Proportion valve 31 is communicated with this cavity portion; After break bar is installed; If the air pressure in the cavity portion changes, the pressure that acts on the cutter shaft will change, and the pressure of break bar also can change thereupon.
The TFT-LCD glass cutting machine that the embodiment of the invention provides can be used for single-glass is cut, and when the thickness of this single-glass was 0.4mm, the air pressure of electric Proportion valve output was 0.04-0.06MPa.Certainly this single-glass can also be other thickness; The cutting pressure value of unlike material, different thickness glass is different; Therefore the air pressure of electric Proportion valve output changes with the variation of the pressure data of setting in the unit, only needs before cutting that the required force value of input glass-cutting get final product in unit 21.
The break bar pressure control system of the TFT-LCD glass cutting machine that the embodiment of the invention provides is mainly used in TFT-LCD glass is cut.As shown in Figure 2; Said TFT-LCD glass 51 is fitted by two sheet glass and is constituted; When cutting TFT-LCD glass 51; Need earlier first 511 to TFT-LCD glass 51 to cut, then 51 upsets of TFT-LCD glass are made second 512 of this TFT-LCD glass 51 up, and second face is cut.
Since first 511 that has cut TFT-LCD glass 51 cut again second of TFT-LCD glass 51 512 o'clock; The cutting part of TFT-LCD glass 51 is in floating dummy status; Second of cutting TFT-LCD glass 51 512 o'clock, the present invention is through changing the air pressure of electric Proportion valve output, the mode that increases break bar pressure is cut; Be step-like in its cut edge, back well in glass cutting, as shown in Figure 2.Certainly, the edge of this two sheet glass also can be at grade.
Wherein, when first of cutting mechanism 11 cutting TFT-LCD glass 51, unit 21 control electric Proportion valves 31 are carried first air pressure to cutting mechanism 11 (being in the cavity portion of cutter shaft); When second of cutting mechanism 11 cutting TFT-LCD glass 51, unit 21 control electric Proportion valves 31 are carried second air pressure to cutting mechanism, and second air pressure is greater than first air pressure.
Wherein, The thickness of every sheet glass is 0.2-2mm; The table of corresponding relation that first air pressure that the TFT-LCD glass cutting of unlike material, different thickness is required and second air pressure can be consulted thickness and the pressure of glass-cutting obtains, also can be before cutting, earlier through manual mode trial cut a slice TFT-LCD glass; Record the value of first air pressure and second air pressure, these two atmospheric pressure values of input get final product in unit then.For example: when the thickness of every sheet glass was 0.4mm, said first air pressure was 0.04MPa, and second air pressure is 0.045-0.048MPa.
The also corresponding method that a kind of break bar pressure of the TFT-LCD of control glass cutting machine is provided of the embodiment of the invention sees also Fig. 3, and described method comprises:
S110, the pressure data of being preset by the unit basis send control signal corresponding to electric Proportion valve;
S120, electric Proportion valve are carried corresponding air pressure according to this wave to cutting mechanism;
S130, by the cutting mechanism glass-cutting.
When the cutting machine cutting thickness was the single-glass of 0.4mm, required air pressure was 0.04-0.06MPa, and the pressure of cutting mechanism changes the air pressure control in the cavity portion on the cutter shaft through electric Proportion valve.
The TFT-LCD glass cutting machine that the embodiment of the invention provides is mainly used in TFT-LCD glass is cut.Wherein, when first of cutting mechanism cutting TFT-LCD glass, unit control electric Proportion valve is carried first air pressure to cutting mechanism; When second of cutting mechanism cutting TFT-LCD glass, unit control electric Proportion valve is carried second air pressure to cutter shaft, and second air pressure through changing the air pressure of cutting mechanism, changes the degree of depth of break bar cutting greater than first air pressure.
In this embodiment, when the thickness of every sheet glass was 0.4mm, said first air pressure was 0.04MPa, and second air pressure is 0.045-0.048MPa.
Below be specific embodiment with the LCD glass (thickness of every sheet glass is 0.4mm) of 0.4mm, the method for the break bar pressure of control TFT-LCD glass cutting machine provided by the invention is described in detail:
Transmit control signal to motor by unit earlier; Electric motor driving control knife rest is descended; The control motor stops when first face of break bar and glass touches; Simultaneously send control signal corresponding to electric Proportion valve, make the air pressure of electric Proportion valve output 0.04MPa, afterwards by first of break bar cutting LCD glass by unit; Send control signal corresponding by unit to motor afterwards, the electric machine control knife rest is resetted; Through switching mechanism or manual mode upset LCD glass, second of glass is faced up afterwards; Transmit control signal to motor by unit afterwards; Electric motor driving control knife rest is descended; The control motor stops when break bar and glass second face touch; Simultaneously send control signal corresponding to electric Proportion valve, make the depth of cut of the air pressure change break bar of electric Proportion valve output 0.045-0.048MPa by unit; Afterwards by second of break bar cutting LCD glass.
In sum; The break bar pressure control system and the method for TFT-LCD glass cutting machine provided by the invention; Send control signal corresponding through unit to electric Proportion valve, electric Proportion valve is according to the pressure of the corresponding Cutting Control of this wave mechanism, when glass-cutting; Realize full-automatic control, eliminated bad product.
The system of TFT-LCD glass cutting machine provided by the invention is adapted to the cutting to TFT-LCD glass especially, and when first of cutting mechanism cutting TFT-LCD glass, electric Proportion valve is carried first air pressure to cutting mechanism; When second of cutting mechanism cutting TFT-LCD glass; Electric Proportion valve is carried second air pressure to cutting mechanism, and second air pressure is greater than first air pressure, and these two air pressure produce control signal corresponding automatically by unit; Eliminated and cut bad phenomenon, reduced scrap rate.
It is understandable that, concerning those of ordinary skills, can be equal to replacement or change according to technical scheme of the present invention and inventive concept thereof, and all these changes or replacement all should belong to the protection domain of the appended claim of the present invention.

Claims (4)

1. the break bar pressure control system of a TFT-LCD glass cutting machine; It is characterized in that; Comprise the cutting mechanism that is used for glass-cutting, be used for the electric Proportion valve and the unit that is used for sending to electric Proportion valve corresponding control signal of the break bar pressure of Cutting Control mechanism according to preset pressure data; The signal input part of said electric Proportion valve is connected with unit, and output terminal is connected with cutting mechanism through pneumatic tube;
Wherein, when first of cutting mechanism cutting TFT-LCD glass, unit control electric Proportion valve is carried first air pressure to cutting mechanism; When second of cutting mechanism cutting TFT-LCD glass, unit control electric Proportion valve is carried second air pressure to cutting mechanism, and second air pressure through changing the air pressure of cutting mechanism, changes the degree of depth of break bar cutting greater than first air pressure; Wherein, the thickness of TFT-LCD glass is 0.4mm, and said first air pressure is 0.04MPa, and second air pressure is 0.045-0.048MPa.
2. the break bar pressure control system of TFT-LCD glass cutting machine according to claim 1 is characterized in that, cutting mechanism comprises knife rest, is used to that the cutter shaft of break bar is installed and is used to control the motor that knife rest goes up and down; Motor and cutter shaft all are installed on the knife rest, and motor is connected with unit.
3. the break bar pressure control system of TFT-LCD glass cutting machine according to claim 3 is characterized in that the top above the cutter shaft has cavity portion, and the pneumatic tube of said electric Proportion valve is communicated with this cavity portion.
4. a method of controlling the break bar pressure of TFT-LCD glass cutting machine is characterized in that, comprising:
Send control signal corresponding according to preset pressure data to electric Proportion valve by unit;
Electric Proportion valve is carried corresponding air pressure according to this wave to cutting mechanism;
By the cutting mechanism glass-cutting;
Wherein, when first of cutting mechanism cutting TFT-LCD glass, unit control electric Proportion valve is carried first air pressure to cutting mechanism; When second of cutting mechanism cutting TFT-LCD glass, unit control electric Proportion valve is carried second air pressure to cutting mechanism, and second air pressure through changing the air pressure of cutting mechanism, changes the degree of depth of break bar cutting greater than first air pressure;
Wherein, the thickness of every sheet glass is 0.4mm, and said first air pressure is 0.04MPa, and second air pressure is 0.045-0.048MPa.
CN2011100908639A 2011-04-12 2011-04-12 System and method for controlling cutting wheel pressure of TFT-LCD (thin film transitor-liquid crystal display) glass cutting machine CN102219368B (en)

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Application Number Priority Date Filing Date Title
CN2011100908639A CN102219368B (en) 2011-04-12 2011-04-12 System and method for controlling cutting wheel pressure of TFT-LCD (thin film transitor-liquid crystal display) glass cutting machine

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CN2011100908639A CN102219368B (en) 2011-04-12 2011-04-12 System and method for controlling cutting wheel pressure of TFT-LCD (thin film transitor-liquid crystal display) glass cutting machine

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CN202054736U (en) * 2011-04-12 2011-11-30 深圳市晶向科技有限公司 Cutter wheel pressure control system of TFT-LCD (Thin Film Transistor Liquid Crystal Display) glass cutting machine

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