TWI333937B - Scriber for controlling pressure using magnetic force - Google Patents

Description

1333937 IX. INSTRUCTIONS: CROSS REFERENCE TO RELATED APPLICATIONS This application claims the following priority: Korean Patent Application No. 10-2005-0133742, filed on Dec. 29, 2005, the disclosure of which is incorporated herein by reference. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a scribe device for using a magnetic force control pressure, in particular, for a scribe device for using a magnetic force control pressure, which allows a pressurizing force to be subjected to optimal conditions, rules Apply to the substrate. [Prior Art] In general, a glass substrate for a flat panel display (such as a liquid crystal display) is cut and processed from a large mother board according to the size of the display. The process of cutting a brittle material such as a glass substrate is performed by a tool consisting of a diamond material to form a cutting line on a surface of the glass substrate, wherein the material of the drill has a glass substrate The hardness of the large; and the breaking process 'by focusing on the formation. Adding a plate to the cutting line on the glass substrate to cut the #*] glass substrate.

4TOP-8N/06021TW : HP02006-KI40050TW 1333937 The scribing process forms cracks on the surface of the glass substrate, using a diamond cutter or a wheel cutter made of hard metal. The breaking process cuts the glass substrate, and along the crack formed on the glass substrate, the crack develops into the glass by applying a bending moment or a sh〇ck power. Change & 'When the cutter presses the surface of the glass substrate to form a crack on the glass substrate, if the pressure of the pressure cutter is greater than the critical value of the stress distortion of the glass, one of the pressures The direction is cracked, that is, in the direction perpendicular to the surface of the glass substrate. This is called a vertical crack. When the vertical crack develops and reaches the opposite surface of the glass substrate, the glass substrate is naturally cut. However, the pressure of the Dang Cutter is too high, and the crack is formed in the horizontal direction of the surface of the glass substrate, which is called a horizontal crack. When a horizontal crack begins to occur, the pressure applied to the wheel does not act to form a vertical crack, and the effect is to develop a horizontal crack. Therefore, when the surface of the glass substrate is scribed by the cutter, it is important that horizontal cracks do not occur.

4TOP-EN/0602ITW ; HP02006-KI40050TW The typical factors affecting the scribe on the substrate are as follows. Angle of the cutter end, wheel (1) cutter: type, material, diameter (in the case of a wheel cutter); characteristics of the residual (two: =::) part, composition of the broken glass (4) Environment: environment Temperature and fishing, cutter oil ^utter〇ii) presence or absence. To accurately cut a thick glass substrate, deep vertical cracks need to be formed. Therefore, the angle of the cutter end can be large and the load of the cutter can be large. In the wheel cutter, it is effective to make the diameter of the wheel larger. When the glass substrate is scribed using a cutter, the load from the start point to the end point should be sufficient and uniform so that the vertical crack is formed at a uniform depth. The cut surface of the glass substrate can be clearly formed only when the depth of the uniform vertical crack is uniformly formed. For this purpose, conventional techniques use a pneumatic cylinder to press the wheel, as illustrated in FIG. Scratch device, disclosed in the Korean Patent Early Disclosure Case

4TOP-HN/06021TW; HP02006-K140050TW 1333937 «2005-0032834, entitled "Apparatus for cutting substrate and method for driving the same", comprising a support portion 15 with a wheel tip The wheel bracket 16 of the 17 is mounted thereon by a bearing 18; and a head 10 for applying the pressure required to form the scribe line when the support portion 15 is moved. The head unit 10 includes an air cylinder 12' that pressurizes the piston (pistGn) 13 by a compressed gas supplied through a pneumatic line 14 formed in a head unit 11. However, due to the nature of the gas path, the pneumatic type has a slower reaction characteristic, so no precise load control is performed and an additional • gas path is required. In the gas path, the consistent pressure maintained is relatively lower than that of the other parties. Therefore, it is necessary to use a gas path having a very precise pressure control function for a glass substrate which is greatly affected by the scribing process. Therefore, maintaining a consistently low pressure gas path reduces productivity. To solve the aforementioned problems using the pneumatic load control method, a motor control method can be used. As illustrated in Fig. 2, the motor control method includes a wheel bracket 26 having a wheel 28 to be mounted, and a mounting head 24' such that the harrow shaft 27 of the wheel bracket 26 is pivoted with the bearing 25; The motor 2 is located at the upper end of the head unit % to pressurize the head unit 24.

4TOP-EN/06021TW ; HP02006-K140050TW 1333937 Motor 20 is a voice coil motor (VCM), and includes a stator (status) 21 fixed to the head unit of the scoring device, and vertically movable relative to the stator 21. The prime mover (m〇ver) 22. However, in the conventional scribing apparatus using the voice coil motor, since the torque (t〇rque) set to limit the action applied to the glass substrate is limited, it is impossible to apply a sufficient load to the wheel. Furthermore, there is also a method of using a rotary motor (r〇tary m〇t〇r), but it has a very complicated structure due to the characteristics of the rotary motor. The use of air pressure and spring load control method is described in Korean Patent Publication No. 2002-13400, which was published on Feb. 20, 2002, entitled "Cutter for cutting brittle materials, scribing device and method of use (Cutter for Cutting brittle material, scriber and scribing method using the same)". A representative embodiment of many embodiments disclosed in Korean Patent Laid-Open Publication No. 2002-13400 is illustrated in Fig. 3. Referring to Figure 3, a stopper 31 is attached to the middle of a shaft 38a extending upward from a wheel bracket 38 having a wheel 39, a bobbin composed of an iron paramagnetic substance. 33 Sliding ground (sHdingly) is inserted into the cylindrical body 30, 4TOP-EN/0602ITW; HP02006-KI40050TW (S) and one end of the shaft 38a is fixed to the bottom of the magnet 34 by screws. The bottom of the plug 31 contacts a lower step 37a formed at the lower inner end of the frame support portion 37, and the frame support portion 37 is formed at a lower portion of the cylindrical body 30. The bottom of the bobbin 33 contacts the upper step 37b formed at the upper end of the bobbin support portion 37. The bottom contact of the magnet 34 is formed in the inner circumference (circular) and flange-like connecting portion 30a of the cylinder 30. The spring 35 is inserted between the projection 33a and the bottom of the connecting portion 30a, and the projection 33a is formed at the lower end of the bobbin 33 in the diameter direction. An upper restriction plug 36 formed on the upper portion of the cylinder 30 is used to restrict the upward movement of the magnet 34. In the aforementioned conventional scribing device, when on standby, the bobbin 33 receives the spring 35 to elastically move downward, and the bobbin 38a and the wheel bracket 38 receive the downward elastic action because these elements are attracted to the magnet 34 together. Therefore, when facing the glass substrate pressing wheel 39, the magnet 34 moves upward together with the bobbin 33, and the spring 35 is compressed by the movement of the bobbin 33. The downward force (i.e., the force provided by the separation of the bobbin 33 from the magnet 34) acts on the bobbin 33 by the reaction of the spring 35. When the glass substrate is further pressed against the wheel 39, the repulsive force of the spring 35 increases in proportion to the degree of movement of the magnet 34. When the repulsive force is greater than the magnetic -10-

4TOP-EN/06021TW: HP02006-K140050TW 1333937 When the body 34 and the suction force between the tubes 33, only the bobbin 33 is momentarily moved downward by the elasticity of the spring 35 and hits the upper surface of the plug 31 downward. Therefore, the downward steep shock force is applied to the wheel 39 of the wheel bracket 38 through the frame shaft 38a, thereby forming an effective crack from the starting point of the scribing. Next, the squeezing pressure applied to the wheel 39 can be set by applying a gas pressure to the magnet 34 through the upper portion of the cylinder 30. However, the conventional scribing apparatus in the above configuration forms an effective vertical crack only on the glass substrate from the scribing starting point. That is, in the conventional scribing apparatus, it is impossible to control the load of the rule during the entire scribing process. In some cases, the pressure applied to the magnet 34 can be used to control the pressure. However, this conventional scoring apparatus has problems similar to the pneumatic scribing apparatus of the other conventional techniques described above. SUMMARY OF THE INVENTION Accordingly, the present invention is directed to providing a scribing device for controlling pressure using a magnetic force to regularly load a wheel on a glass substrate by a press scribing device to form a uniform crack. Another object of the present invention is to provide a scoring device for controlling the pressure, which uses a magnetic force to uniformly press the wheel of the scoring device in a uniform configuration.

4TOP-EN/06021TW; HP02006-JCI40050TW 1333937 on a glass substrate. An exemplary embodiment of the present invention provides a scribing device for controlling pressure, which uses a magnetic force, comprising: a first magnet coupled to the wheel for forming a crack on the fragile substrate; and a second magnet generating a predetermined repulsive force relative to the first magnet; a head unit in which the first magnet is movably positioned relative to the second magnet. The first magnetic system electromagnet (electromagnet). The electromagnet as the first magnet further includes a power supply device that varies the amount of current and the polarity of the switching current. The second magnetic system electromagnet. The electromagnet as the second magnet further includes a power supply device that varies the amount of current and the polarity of the switching current. The electromagnetic system as the second magnet is fixed in the head unit. The first magnetic system is a permanent magnet. The second magnetic system is a permanent magnet. -12-

4TOP^EN/06021TW; HP02006-K140050TW permanent magnets are movably positioned in the head unit as a second magnetic system. [Embodiment] The present invention is more fully described with reference to the following drawings, which show a comparison of the present invention. A good example. The invention may be embodied in different forms and should not be construed as being limited by the embodiments herein. Moreover, this noisy embodiment merely provides an exemplary embodiment of the present invention. The same number indicates the phase component. Figure 4 is a cross-sectional view for explaining the configuration of a magnetically controlled pressure scribing apparatus according to a first embodiment of the present invention; and Figure 5 is a second embodiment of the present invention for explaining the use of a magnetic control system according to the second embodiment of the present invention. The construction of the device. The work force is used to scribe the pressure-controlled pressure, the first embodiment of the long-lasting magnet, and the use of the electromagnet. <Second embodiment> First embodiment&gt; As exemplified in Fig. 4, in the first embodiment of the present invention, the embossing of the control pressure includes: the head unit 4 〇, the spoon = magnetically applied magnet 46, this is a permanent magnet; the movable shaft contains a pressure receiving magnet 52, which is a permanent magnet, a second 50, and a movable head unit-13-

4TOP-EN/0602ITW : HP02006-K140050TW Therefore, when the magnet 46 and the pressure 戍 crack are applied to the glass substrate by the wheel, the pressure is maintained by the pressure, and the repulsive force generated between the spliced bodies 52 is regular. 3 This is one of the cracks formed on the glass substrate. The pressure device 44 can be! ~ The self-pressure receiving portion 51 is placed at a predetermined position of the case 42, that is, placed. However, the more versatile A, the positional change of the distance of the predetermined repulsive force is taken to take into account the mechanical properties of the wheel 58 of the shell 42 or the glass substrate W. And change the pressure. &lt;Different embodiment&gt; As illustrated in Fig. 5, it is too poor to be _ imaginary, force,: T set 'including: head single =: containing = force accepting bow: element 60 contains: shell end 63, _ pressure Shocking materials and Xin 62. The salty end portion 63 is formed under the head unit 6〇, the unit 7〇, so that the movable head h7Q is movable within a certain range. The pressure device 64 has a hollow portion such that the pressure applying magnet is located therein. The housing 62 has a "holding pressure device 64." 4TOP-EN/0602ITW; HP〇2〇〇6-KI40050TW 15- 1333937 Therefore, when the borrowing wheel 78 is formed The crack is on the glass substrate, and the urging force generated between the magnet 66 and the pressure receiving can 72 maintains the pressing force, thereby maintaining (4) the uniform depth of the crack on the glass substrate. It is formed by an electromagnet, and it is not necessary to adjust the position of the pressure applying magnet 66, which is different from the pressure applying magnet 46 of the first real. The amount of current supplied to the electromagnet by the change can be controlled to be repelled in the first implementation, and the pressure receiving magnet is clamped. Described as a permanent magnet 'but it can also be an electromagnet as a pressure applied magnet %. As described above, the present invention provides the effect of maintaining a consistent depth of cracks', positioning the magnet between the sculpt|head unit and the wheel bracket The twisting applied to the frame is regularly maintained by the repulsive force generated between the magnets. ~ Furthermore, the present invention provides an effect of reducing the operating cost because the pressing force of the device is set by the magnet The invention has been described in terms of a preferred embodiment of the invention. However, it should be understood that the invention is not limited to the disclosed embodiments. Conversely, the invention is intended to encompass the use of current or future technologies. And both

4TOP-EN/0602ITW; HP02006-K140050TW 1333937 and other examples, and modifications and alternative arrangements within the capabilities of those skilled in the art. Therefore, the scope of the scope of the patent application should be given the broadest interpretation to cover all such modifications and similar arrangements. BRIEF DESCRIPTION OF THE DRAWINGS The foregoing features and other features and advantages of the present invention will become apparent to those skilled in the <RTIgt; A conventional scribing device for cylinder control pressure; Fig. 2 is a schematic view of a conventional scribing device for explaining the use of a voice coil motor control pressure; Fig. 3 is a schematic view for explaining the use of a conventional scribing device; Fig. 4 A cross-sectional view for explaining a configuration for sculling a magnetically controlled pressure according to a first embodiment of the present invention; and FIG. 5 is a cross-sectional view for explaining the second embodiment of the present invention for use of magnetic control The structure of the pressure scribe. [Main component symbol description] 10 head unit 11 head unit 12 gas red 13 piston 14 gas path -18-

4TOP-EN/06021TW ; HP02006-K140050TW 1333937 Support wheel bracket wheel tip bearing motor stator prime mover head unit bearing wheel bracket frame shaft wheel cylinder connection plug tube protrusion magnet spring upper limit plug shaft support lower stage upper step wheel Bracket -19-

4TOP-EN/06021TW ; HP02006-KI40050TW 1333937 Shaft head unit Shell end pressure device Pressure application magnet Movable head unit Pressure receiving part Pressure receiving magnet Pressure receiving part Shaft wheel bracket Connection part Bearing wheel bracket Wheel head unit Shell End pressure device pressure application magnet movable head unit pressure receiving portion pressure receiving magnet pressure receiving portion shaft -20-

4TOP-EN/06021TW : HP02006-K140050TW 1333937 74 wheel bracket connection 75 bearing 76 wheel bracket 78 wheels

4TOP-EN/0602ITW : HP02006-K140050TW -21

Claims (1)

1333937 is in the head unit. 7. The scribing device of claim 1, wherein the first magnetic system is a permanent magnet. 8. The scoring device of claim 1, wherein the second magnetic system is a permanent magnet. 9. The scribe device of claim 8, wherein the permanent magnetic system is movably located in the head unit. -23- 4TOP-EN/0602ITW : HP02006-K140050TW