TWI358383B

TWI358383B - Protecting sheet separation method and protecting

Info

Publication number: TWI358383B
Application number: TW095122230A
Authority: TW
Inventors: Naoki Nishimura; Masaru Jinno
Original assignee: Nippon Electric Glass Co
Priority date: 2005-06-21
Filing date: 2006-06-21
Publication date: 2012-02-21
Also published as: KR101152221B1; JP2007001682A; TW200704576A; CN100587558C; CN1885113A; KR20060133889A; JP4692924B2

Description

1358383 2l003pif IX. DESCRIPTION OF THE INVENTION: 1. Field of the Invention The present invention relates to a method and apparatus for separating a protective sheet, and more particularly to a separation and protection of a glass substrate that is transported from a state of being carried on a protective plate. A protective sheet separation method and apparatus for removing a sheet and removing it. [Prior Art] 4 people are well known 'in liquid crystal display (LCD), piasma display panel (PDP), electroluminescence display (ED), field emission display (Field Emission Display) In the production of glass panels for various image display devices such as FED, a method of producing a plurality of glass panels from a single glass substrate (roughened glass plate) is used. In addition, in recent years, the size of the above-mentioned glass substrate manufactured by a glass manufacturer or the like has been promoted as the size of the image display device has increased. These glass substrates are transferred to a processing stage at the final stage of the manufacturing process, and each side (in detail, the end faces of the respective sides) of the glass substrate cut into a rectangular shape and having a predetermined size is applied to the processing position. Prescribed processing such as chamfering. The steps before the execution of such processing, specifically, the steps performed as described below are conventional. In other words, as shown in FIG. 7(a), in a standby position such as a cutting step, a plurality of glass substrates (original plates) 2 are bundled in a longitudinal direction on a pallet P. Moreover, the paper folding function as the protective sheet is interposed between the respective substrates 2, and the glass substrate 2G is not directly contacted by the paper 2G, thereby preventing damage or adhesion of the different 6 1358383 21003 pif. Further, as the protective sheet, another protective sheet such as a polyethylene sheet or a foamed resin sheet may be used instead of the paper sheet 21'.

Then, 'one glass substrate 20 and one sheet of paper 21' are taken out together from the package body as described above. As shown in Fig. 7 (b), a piece of glass substrate 2 is placed in such a manner that the paper 21 is placed under the glass substrate 20. And a piece of paper 21 is placed on the conveyor or on the console. Thereafter, while the glass substrate 2 is held on the paper 21, as shown in FIG. 7(c), the scribing s is engraved on the surface of the glass substrate 2 by the scribing mechanism 22, such as As shown in FIG. 7(d), the outer peripheral portion 20a of the glass substrate 20 is cut along the scribe line S. Further, after the D-Hay step, as shown in FIG. 7(e), after separating and removing the & paper 21 from the glass substrate 20, the glass substrate 2 is placed on a processing position W1 where the chamfered end face force 1 is performed. For example, on the belt conveyor C1.

In this way, in the above-described manner, the operation of separating and removing the paper 2 from the glass substrate and disposing the glass substrate 20 to the processing position W1 is as shown in the schematic plan view of FIGS. 8(4) and (1). :> 〇ϋ 〇ϋ 合合合 , , , , , , , , 。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。 In other words, when the operator M wants to lift only the glass substrate 2G as shown in FIG. 9, the slamming paper 21_ of the static rotation is lifted in the glass substrate resistance state, and therefore, There is a need for an operation for preventing the adhesion of the 5th paper 21 . In order to replace the manual operation of such an operator, an automatic loading/removing/using Japanese Patent Document 1 discloses a method in which a glass substrate and a glass substrate are alternately laminated in a laterally placed posture on a stage from 1538383 2l〇〇3pif. In the state of the paper, the glass substrate of the uppermost layer is adsorbed and held by the adsorption pad, and the glass substrate is moved in the lateral direction together with the paper which is tightly bonded under the glass substrate, and then only the paper is dropped on the second glass substrate. The pressing portion of the jig pushes the paper in the lateral direction, and the paper is removed from the glass substrate of the second sheet. In addition, according to the following Patent Document 2 and Patent Document 3, there is disclosed a method in which a glass substrate and a paper are alternately laminated from a posture placed in a longitudinal direction on a pallet, and are adsorbed and held by the adsorption pad. At the same time as the glass substrate, the edge of the paper which is exposed from the lower end or the side end of the glass substrate is adsorbed and held by an adsorption member that operates independently of the adsorption pad, and is joined by the synergistic action of the adsorption pad and the adsorption member. The paper is detached from the glass substrate. Japanese Patent Laid-Open Publication No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. The glass substrate used is representative, and the enlargement of the glass substrate is particularly remarkable. Therefore, it is inevitable that the paper size needs to be increased in size. For this reason, in the above conventional method, the glass substrate and the paper are appropriately formed. The aspect of separation can create obstacles. In other words, the method of the operator's operation in the above-described conventional method is as shown in Fig. 8 (〇), when the person is old, the slab is lifted and raised (for example, the length of one side is about 1500 mm or more). It is extremely _ or actually becomes impossible, which leads to a significant decrease in productivity and productivity. Therefore, the actual situation has become that it can no longer be used 8 ^ 58383 2l 〇〇 3pif to adopt such a method. In the method disclosed in Patent Document 1, it is necessary to adsorb and hold the glass substrate of the uppermost layer by the adsorption pad, and to move in the lateral direction, and to sweep the paper which has fallen on the second glass substrate. Knowing the fixture: the action of pushing the pressure part in the lateral direction, the two movements can be combined with the good operation in order. Therefore, there is a control or installation required for this, Aide's complicated concerns, and waste in operation time. Further, in the X method, after the paper is placed on the second glass substrate, the paper is pushed in the lateral direction by the pressing portion of the cleaning jig, and the operation becomes larger as the area of the paper is increased. Difficult to make Further, even if the method disclosed in the above-mentioned Patent Documents 2 and 3 is employed, it is difficult to adsorb and hold the glass substrate by the adsorption pad, and the adsorption is maintained by the adsorption member. The operation of separating and moving the paper from the glass substrate in the edge of the paper is appropriately coordinated. Therefore, similarly to the above, there is a concern that the control or the device is complicated, the operation time is wasted, the operation is wrong, and the like. In the method disclosed in any one of the patent documents 1 to 3, since the surface of the glass substrate is held by the adsorption pad (there is a surface to be placed), the surface of the glass substrate is damaged or caused by contact with the adsorption pad. There is a fundamental problem of the adhesion of the foreign matter on the surface. Moreover, since the method of the above-mentioned one of the methods of the glass substrate has a concern that the surface of the glass substrate and the paper are in contact with each other, the direct sliding of the two substrates or the foreign matter is mixed into the sliding portion. Therefore, as described above, the surface of the glass substrate is damaged or foreign matter adheres to the surface. For some reason, the quality of the glass substrate as the product 9 is lowered, and the yield of the product is deteriorated. [Invention] The present invention has been made in view of the above problems, and an object thereof is to provide a technique of providing as much as possible In addition to suppressing the waste of the operation time or the operation error, the surface of the glass substrate is not damaged or foreign matter is not adhered to the surface, and the protective sheet such as the paper is appropriately separated from the glass substrate in such a state. To achieve the above object, the present invention provides a method for separating a protective sheet from a state in which a glass substrate to be conveyed is placed on a protective sheet to a processing position on the migration side, and the sheet is separated from the glass substrate. The protective plate dividing method includes the following steps: changing the conveying direction of the conveyor belt from the horizontal direction to the downward direction at the end on the downstream side of the conveyor belt and at least at the conveying side (four) of the conveyor belt, The glass substrate is transported in the direction of being displaced to the processing position, and at the same time, the suction force under the glass substrate is attached by using the negative pressure attraction force, and the board is placed. Turn. To the downward direction.笙A method in which the glass substrate is transported by the bearing 6 in a state where the paper-making, polyethylene-plate or foamed resin sheet is under the glass substrate, and is conveyed in the horizontal direction, and the conveyor belt is downstream The conveying direction of the side changes from the horizontal direction to the downward direction. Therefore, and the protective plate is changed in the conveying direction (portion from the horizontal direction) to the temple, the conveyor belt is displaced to the glass substrate without the influence of the force on the glass substrate. In the direction of the processing position on the downstream side, the protective plate of the pad 2I0Q3pif under the glass substrate is adsorbed and held by the negative pressure attraction and is turned from the horizontal direction to the downward direction. Thereby, the transport direction of the glass substrate and the transfer direction of the protective sheet are different, and as a result, the protective sheet can be separated and removed from the glass substrate. Further, when the protective sheet is separated from the glass substrate in such a state, no slippage can be caused between the two, and damage due to the bone movement with respect to the surface of the glass substrate or adhesion of foreign matter can be avoided. Moreover, due to such a 5, the separation operation of the plate and the displacement of the glass substrate to the garnish position are performed at the same time, the operation can be eliminated, the waste is consumed, and the moxibustion of the protective plate is transferred through the conveyor belt. The change direction of the conveying direction utilizes a negative pressure. Because of gravity, it is possible to suppress the occurrence of operational errors as much as possible. In this case, the conveyor belt may be conveyed from the horizontal direction conveyance tank ir% to the direction change portion, and the suction force is sucked and held by the suction force of the suction force, and the conveyor belt is passed through the conveyor belt. The direction of the change is the part; the sheet part of the square will sag, even if the protective board is about to fall due to the weight of the protective plate, but the plate part of the protective plate is still in the horizontal conveying position of the conveyor belt. The negative pressure attraction is held by the soil, so it prevents the protection board from falling. Thereby, it is possible to prevent the damage between the glass substrate and the protective plate caused by the falling of the protective sheet, and the damage to the surface of the glass substrate and the attachment of the foreign matter by the other. The protective plate is adsorbed and held by the negative pressure attraction from the portion where the conveying direction changes to the lower portion. In this way, in the protective plate, the plate portion facing downward by the direction change portion 153883 2l003pif of the conveyor belt is surely held by the negative pressure attraction in the lower direction of the conveyor belt, so the protection plate does not fall. Further, in a state where there is no sliding between the substrate and the glass substrate (preferably, the speed of the protective plate and the conveying speed of the glass substrate are the same), the protective plate is smoothly separated from the broken substrate. On the other hand, in order to achieve the above object, the present invention provides a protective sheet separating apparatus which removes a protective sheet from the broken sheet before the step of transferring the glass substrate conveyed on the protective sheet to the processing position on the downstream side. The glass substrate separation device comprises: a conveyor belt disposed on the positive upstream side of the processing position, the conveyor belt shifting the glass substrate in a state of being carried on the protection plate to the processing position, and the conveyor belt The conveying direction changes from the horizontal direction to the downward direction at the end portion on the downstream side thereof, and a negative pressure attraction force is generated on the conveying belt at least in a portion where the conveying direction of the conveying belt changes. According to such a device 'the glass substrate is in a state in which the protective sheet is placed under the same as described above, the glass substrate is carried on the conveyor belt provided on the immediately upstream side of the processing position and conveyed in the horizontal direction, and the conveyance is performed. The end portion of the belt on the downstream side changes in the conveying direction of the conveyor belt from the horizontal direction to the downward direction, and at the portion where the conveying direction of the conveyor belt changes, a negative pressure attraction force is generated on the conveyor belt to adsorb at the portion. Keep the protection board. Therefore, when the glass substrate and the protective sheet are changed in the transport direction, the transport belt transports the glass substrate to the downstream processing position without affecting the suction attraction of the glass substrate. In contrast, 'the protective plate below the glass substrate passes the negative pressure attraction from the water 21003pif

Git goes down. Thus the direction and protection of the glass substrate

^ Finding the effect of performing such an action is the same as the above-mentioned effect.

In the case of a portion, the embodiment 1 has a hollow rotation report of the wheel belt in the middle of the change in the conveying direction. The rotation change portion is generated for the conveying direction of the conveyor belt. The belt is conveyed and the conveyance UP of the belt is conveyed to the down direction, so that it is possible to effectively use the i-like redness as a constituent element of the negative pressure generating skirt which generates a negative pressure attraction force on the belt. Therefore, the rotating parent is used in combination to achieve the reduction of the number of the structure and the use space, and the miniaturization and the simple implementation of the package, forming a plurality of holes on the conveyor belt and A plurality of circumferential grooves are formed in the peripheral wall portion of the rotating parent, and a through hole communicating with the hollow portion is formed in a bottom wall portion of each of the grooves, and an arrangement pitch and a width of the through holes in the conveyor belt in the width direction are described. The circumferential grooves on the winding roller are arranged in the same axial direction. τ In this way, the through hole of the conveyor belt can be sucked by the through hole formed in the circumferential sample of the rotating parent and the bottom wall portion of the circumferential groove, and is sucked by the hollow portion (air suction portion) of the rotation. Thereby, a negative pressure attraction force is generated on the outer peripheral surface of the belt-changing portion of the conveyor belt. At this time, since the arrangement pitch of the through holes on the carrier belt in the width direction and the circumferential groove on the rotary roller = t 13 1358383 21003 pif are set to be the same in the arrangement pitch, it is possible to pass through the conveyor belt without causing waste. The hole is subjected to a negative pressure suction bow (the air suction is changed from the conveyor belt to the protective plate in the direction of the change in the direction of the transfer + good car, and the appropriate negative pressure attraction is possible.) In addition, in one embodiment, A box-shaped body is disposed below the horizontal wheel of the conveyor belt, and an internal space of the box-shaped body generates a suction portion for suction in a horizontal direction of the conveyor belt. Rolling - such as - through the air suction portion of the box body to produce a negative pressure attraction at the conveying direction of the conveying direction, by which the protective plate under the glass substrate is adsorbed and held at the level of the conveyor belt Directional conveying position. Therefore, in the protective plate, the portion of the plate that is directed downward by the direction change portion of the belt will sag, even if the protective plate itself is heavy due to the weight of the protective plate itself It is to be dropped, but because of the other plate portion of the protective plate: as described above, the horizontal amount of the conveying portion of the conveyor belt is sucked and held by the holder, so that the falling of the protective plate is prevented as described. As a result, the corresponding structure can be obtained. The above-mentioned contents have the same effects. In a preferred embodiment, a plurality of two through holes are formed in the conveyor belt, and a plurality of second through holes are formed in the upper wall portion of the box body along the conveying direction. The strip-shaped slits have the same arrangement pitch in the width direction of the through-holes on the conveyor belt and the same width as the width of the slits on the box-shaped body. The through hole can be transported in the horizontal direction of the conveyor belt by means of a slit formed in the upper surface of the box-shaped body and by using the inner space of the box-shaped body (air suction 2l003pif. P) and air introduction. Negative pressure attraction force is generated on the upper surface of the portion. At this time, since the widthwise arrangement pitch of the through holes on the conveyor belt and the arrangement pitch of the slits in the box-like body in the width direction are set to be the same, it is possible to generate no waste and In the disconnected state, vacuum suction (air suction) is performed from the through hole of the conveyor belt, so that it is possible to efficiently and continuously apply an appropriate negative pressure attraction force to the protective plate from the horizontal direction of the conveyor belt. In one embodiment, a box-shaped body is disposed on an inner side of a lower conveying portion of the belt, and an inner space of the box-shaped body is formed to generate a vacuum suction at a lower conveying portion of the conveyor belt. The air suction portion of the force. In this way, a vacuum suction force is generated in the lower direction of the conveyor belt by the air suction portion of the box-shaped body, and the protective plate on the underside of the glass substrate is caused by the negative pressure attraction force. The adsorption is held in the lower direction conveying position of the conveyor belt. Thereby, in the protective plate, the plate portion facing downward by the direction change portion of the conveyor belt is reliably absorbed by the negative pressure attraction portion in the lower direction of the conveyor belt. Maintained on the outer side of the conveyor belt, so that the protective plate does not fall and there is no sliding between the glass substrate (the preferred speed of the slab The same as the conveying speed of the glass substrate) is suitably conveyed downward by 'smoothly separating the glass substrate from the protective plate. In addition, in one embodiment, a plurality of through holes ' are formed in the conveyor belt and a plurality of elongated slits are formed side by side in the conveying direction on the outer side wall portion of the box-shaped body, and the conveying is performed The arrangement pitch of the through holes in the width direction of the tape is the same as the arrangement of the slits 183583 2l003pif in the width direction of the slits on the box-shaped body. The XI-like-through hole from the wheel belt can be surfaced on the outside of the box-shaped body. The slit formed by P attracts air by the internal space (air suction portion) of the box-shaped body, thereby generating a negative pressure attraction force on the outer surface of the conveying portion in the downward direction of the conveyor belt. At this time, since the arrangement pitch of the width direction of the chest on the conveyor belt and the arrangement pitch of the slits in the width direction of the box-shaped body are set to be the same, it is possible to pass through the conveyor belt without causing waste or interruption. Negative pressure suction (air suction) of the holes makes it possible to efficiently and continuously apply an appropriate negative pressure attraction force to the protective plate from the lower direction of the conveyor belt. In the apparatus having the above configuration, it is preferable that the conveying speed of the conveyor belt is variable. According to the requirements of the rapid increase of the input cost of the glass substrate and the sinfulness of the adsorption holding of the protective sheet, the transport speed of the conveyor belt can be appropriately changed, and the improvement of the operational efficiency and the productivity can be improved. The aspect is favorable. • In an example of A, at the processing position, a transfer device that removes the glass plate from the conveyor belt is provided, and before the protection plate passes through the conveying direction of the conveying V, The conveyor belt is driven at a lower speed than the conveyor, and the conveyor and the conveyor belt are driven at the same speed after a set time after the passage of the protection panel. In this way, the front end portion of the protective plate that has passed through the transport direction change portion of the transport belt is turned downward in the transport direction change portion, and the protective plate is in a state in which the protective plate can be surely separated from the glass substrate by the period 153883 2l003pif. 'The conveyor belt conveys the protective plate and the glass substrate at a low speed. After this state is reached, the conveyor belt conveys the protective plate and the glass substrate at a high speed (the same speed as the conveying device at the processing position). Thereby, the operation for separating the protective sheets from the glass substrate can be avoided, and the time required for a series of operations can be unreasonably lengthened, and the production efficiency can be effectively prevented from being deteriorated. (Effect of the Invention) According to the invention as described above, when the glass substrate and the protective sheet having the underside of the protective sheet pass through the transport direction changing portion, the transport belt transports the glass substrate to the processing position of the downstream side, and In contrast, since the reading plate is turned downward from the horizontal direction by the suction force of the negative pressure, the conveying direction of the glass substrate is different from the conveying direction of the protective plate. As a result, the green sheet can be separated from the glass substrate and the protective sheet can be removed. Further, when the protective plate is separated from such a magnetic substrate, sliding does not occur between the two, so that damage due to sliding with respect to the surface of the glass substrate or adhesion of foreign matter can be avoided. Moreover, due to the separation action of such a protective plate and the addition

Since the positional displacement of the glass substrate is performed at the same time, it is possible to waste time, and since the change of the conveying direction of the protective plate is performed on the conveying belt and the suction force is applied to the changing portion, it is possible to: An operation error occurred. The above and other objects, features, and advantages of the present invention will become more apparent from the aspects of the preferred embodiments of the invention. The way to explain. 17 1358383 2l003pif First, a protective plate separating apparatus according to an embodiment of the present invention will be described based on a schematic plan view shown in Fig. 1 and a schematic side view shown in Fig. 2 . The guard plate separating device 1 has a jointless belt 2 (belt) as a conveyor belt on the upstream side of the transport device C disposed at the processing position W and transporting the glass substrate in the direction of the arrow a. The belt 2 is composed of a resin or a rubber or the like (the surface portion is preferably rubber), and is driven by a roll of "3", 4, 5, and is driven in the direction of the arrow A:

The above-described processing position W is a position at which the glass substrate is subjected to chamfering processing. The surface of the belt 2 has a horizontal conveying portion 2a, a conveying direction changing portion 2b, and a lower conveying portion 2e. These parts are in the horizontal direction of the towel = the portion 2a is located substantially the same as the conveying device c at the processing position w.

^ ' and ' _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Therefore, after the conveyance direction of the belt 2 transitions from the upper side to the lower side (four), the end portion on the downstream side is changed to the lower side. Moreover, the wheeling of the belt 2 can be changed by the speed other than the illustration. Among the three rotating parents 3, 4, and 5 in which the belt 2 is wound, the rotating roller 3 located at the axial position of the wheel 2 is hollow, and the hollow portion of the rotating roller 3 is a hollow rotating wheel. 'It forms an air suction portion for generating a negative pressure attraction force to the change portion 2b at the belt 2. On the lower side of the horizontal conveyance portion 2a of the belt 2, the first phase body 6' is disposed close to each other and the inner space of the first box-shaped body 6 is formed on the upper surface of the conveyance portion 2a in the horizontal direction of the belt 2 1358383 2l 3pjf An air suction portion that generates a vacuum attractive force. Further, the second box-shaped body 7 is disposed close to the inner side of the lower-direction conveying portion 2c of the belt 2, and the inner space of the second box-shaped body 7 is formed for the outer portion of the belt 2 in the downward direction. An air suction portion that generates a negative pressure attraction on the surface. Further, the intermediate portion of the hollow rotating roller 3, the internal space of the first box-like body 6, and the internal space of the second box-like body 7 communicate with each other via the suction manifold 8 to the vacuum generating source. As will be described in detail, the structure shown in Figs. 3 and 4 is such that a plurality of through holes 9 are formed over the entire circumference of the ▼ 2, and the through hole 9 generates a negative pressure attraction force. In other words, a plurality of circumferential grooves 3b' are formed in the peripheral wall portion 3a of the hollow rotating roller 3, and a plurality of through holes 1B communicating with the hollow portions are formed in the bottom wall portions 3c of the circumferential grooves 3b. Further, the arrangement pitch of the plurality of circumferential grooves 3b formed in the hollow rotating roller 3 in the axial direction is set to be the same as the arrangement pitch in the width direction of the plurality of through holes 9 formed in the second. Further, a plurality of first slits 11 are formed in parallel on the upper wall portion 6a of the first box-shaped body 6, and the first slits n are elongated in the conveying direction and communicate with the internal space. Further, a plurality of second slits 12 are formed in parallel on the outer side wall portion 7a of the second box-shaped body <7, and the second slits I2 are elongated in the conveying direction and communicate with the internal space. Further, the arrangement pitch of the plurality of first slits η formed on the first box-shaped body 6 in the width direction and the width direction of the plurality of second slits 12 formed on the second box-shaped body 7 The arrangement pitch is set to be an arrangement pitch in the width direction of the plurality of through holes 9 formed in the tape 2, and an arrangement pitch in the axial direction of the plurality of circumferential grooves 3b formed on the hollow rotating roller 3. the same. Therefore, the 19th 1358383 2'〇〇3pif one slit 11 and the circumferential groove 3b and the second slit 12 are respectively arranged on one column, that is, they are integrally arranged on a plurality of columns, and they are along the belt 2 The movement trajectories of the through holes 9 of the plurality of rows formed are arranged. According to the protective sheet separating apparatus 1 having the above configuration (see FIGS. 5 and 6), first, after the scribe line step and the dicing step are completed, the glass substrate 14 is placed in the state of being loaded on the paper 13, which is The horizontal posture 'breaks into the belt 2. This displacement operation is automatically performed by manual operation by an operator or by a conveying device disposed on the more upstream side of the belt 2. Then, after the end of the displacement operation, the leading ends of the paper 13 and the glass substrate 14 are located on the upstream side of the horizontal conveying portion 2a of the belt 2. In this state, the paper stack 13 and the glass substrate 14 are conveyed to the downstream side by the tape 2, and the plurality of through holes 9 on the portion 2a are conveyed from the horizontal direction of the tape 2 through the upper surface of the first box-shaped body 6. The plurality of first slits 11' formed on the wall portion 6a always attract air in the inner space (air suction portion). Thereby, the paper 13 on the lower surface of the glass substrate 14 is adsorbed and held on the belt 2 by the suction force of the negative pressure. In this state, the glass substrate 14 is conveyed in the horizontal direction by the belt 2. Thereafter, when the leading end of the paper 13 reaches the downstream end of the horizontal conveying portion 2a of the belt 2, here, a plurality of through holes 9 in the conveying direction changing portion 2b from the belt 2 are passed through the plurality of hollow rotating rollers 3 The circumferential groove 3b and the through hole 10 of the bottom wall portion 3c thereof always attract air in the hollow portion (air suction. P). Thereby, the front end portion of the paper 13 is held by the conveyance direction changing portion 2b of the belt 2 due to the suction force of the negative pressure. In this state, the direction of the paper 13 is shifted downward, but the glass substrate 14 is 20 Continue to transport in the horizontal direction. Further, when the leading end of the paper 13 passes through the conveying direction changing portion 2b of the belt 2, the plurality of through holes 9' on the conveying portion 2c from the lower direction of the belt 2 are also passed outside the second box-shaped body 7. The plurality of second slits 12' formed in the face wall portion 7a are always bowed toward the air in the internal space (air suction portion). Thus, as shown in FIG. 5 and FIG. 6, the front end portion of the paper stack 13 is sucked and held by the lower-direction conveyance portion 2C of the belt 2 by the suction of the negative pressure, and the paper 13 is conveyed downward in this state. The glass substrate Η is conveyed by the horizontal direction conveying portion 2a of the belt 2 and is transferred to the conveying device C at the processing position W. Then, at the stage where the rear end portion of the paper 13 passes the lower-direction conveying portion 2c of the belt 2, the paper 13 is dropped by its own weight and stored in a collecting box or the like, and the glass substrate 14 is completely displaced to the conveying device. C is continuously conveyed by the action of the conveying device C. Thereby, the paper 13 is completely separated from the glass substrate 14 and removed. At this time, the conveyance speed of the belt 2 is low in the period in which the leading end portion of the paper 13 passes through the rotation direction changing portion 2b of the belt 2 and is sucked and held by the lower conveying portion 2C, and thereafter becomes high speed. It becomes the same speed as the conveying speed of the conveying device C. Further, while the glass substrate 14 is being transported by the transport device C at a high speed, processing such as chamfering is performed by a polishing tool or the like provided on both sides thereof. Further, in the above embodiment, the present invention is used in the case where the paper 13 is used as the protective sheet. However, the present invention can also be used in the same manner as in the case of using a polyethylene sheet or a foamed resin sheet instead of the paper. (Industrial Applicability) 1358383 21003pif The use of ^Fei (4) to protect the separate wealth and cutting device can effectively 2 = in the liquid crystal display, electric paddle display, electroluminescent display, the glass substrate used in the work, the protection of the second panel The glass substrate used for the bonding material of the board is separated and removed. The application of the protective plate separating device and the view of the embodiment of the present invention are shown in FIG. Fig. 3 is a perspective view of the protective plate separating device. Fig. 3 is a perspective view of the protective plate separating device. The center of the heart =:: = = component _ box _ Fig. 5 is a state in which the protective plate is separated and placed in a (four) state. (4) Top view FIG. 6 is a view showing the schematic side separation of the protective plate separating device in the (10) state. The second t-sequence 7 white &~. (1) respectively shows the conventional protective plate 22 1358383 2l003 pif in Fig. 8 (a) ~ (c) is a schematic plan view showing a separation order of a conventional protective plate. Fig. 9 is a schematic side view showing a problem of the prior art. [Description of main component symbols] 1: Protective plate separating device 2: belt (conveying band)

2a: horizontal conveying position 2b: conveying direction changing portion 2c: lower conveying position 3, 4, 5: rotating roller 3b: circumferential groove 3c: bottom wall portion of the circumferential groove 6: first box-shaped body

6a: upper wall portion 7: second box-shaped body 7a: outer side wall portion 8: suction hose 9, 10: through hole 11: first slit 12: second slit 13, 21: paper (protection plate) 14, 20: glass substrate 20a: outer peripheral portion 22: scribe mechanism 23 1358383 21003pif

c: conveying device Cl: belt conveying device Μ, Ml, M2: operator P: pallet S: scribe line W, W1: machining position 24

Claims

1358383 2l003pif X. Patent Application Range: 1 . A method for separating a protective plate from which a protective glass is transferred from a glass substrate conveyed on a protective plate to a processing position on a downstream side Separation, the protection panel separation method includes:

The conveying direction of the conveying f is changed from the outer flat direction to the downward direction at the end on the downstream side of the conveying belt, and the glass substrate is displaced to the processing position at least in a portion where the conveying direction of the conveying belt is changed. The direction is conveyed while the negative pressure attraction is used to adsorb and hold the reading plate under the glass substrate, and the protective plate is turned from the horizontal direction to the downward direction. 2 As stated in the patent scope! In the method for separating the protective sheets described in the section, it is preferable that the transfer portion is moved from the horizontal direction to the transport direction portion Ϊ by the negative pressure.

3. If the application of the third item or the method is applied, wherein the feeding belt changes from the conveying direction to the miscellaneous part: using the negative pressure attractive force to adsorb and hold the J-plate direction for transporting and being transported to the state before the fine amount is made, The protective plate is disposed two; = includes: the earth proud knife is separated, the 泫 protective plate separating device is covered by the conveyor belt, and is disposed in the state where the processing position is carried on the protective plate _ the edge feeding belt is disposed, and the conveying direction of the conveying belt is In the second, the u processing position changes to the downward direction, and at least in the wheel: the horizontal direction of the drying direction change portion 25 1358383 2l003pif position, a negative pressure attraction force is generated on the conveyor belt. The protective plate separating device according to the fourth aspect of the invention, wherein the hollow rotating roller that winds the conveyor belt is provided in the conveying direction changing portion, and the hollow portion of the rotating roller has an air suction portion. It is used to generate a negative pressure attraction at a portion of the conveying direction of the conveying belt. [6] The protective sheet separating device according to Item 5, wherein a plurality of through holes are formed in the conveying belt, and a plurality of circumferential grooves are formed in a peripheral wall portion of the rotating roller, in each of the circumferential grooves The bottom wall portions respectively form a through hole communicating with the hollow portion, and the arrangement pitch of the widths of the through holes on the conveyor belt and the arrangement pitch of the circumferential grooves on the rotating roller are the same as In the fourth to sixth items of the patent range, the board is separated and assembled, wherein a box-shaped body is disposed in the horizontal direction of the conveying (four), and the inner space of the box body is formed. "The horizontal conveying position produces (4) the attraction of the transmission, the protection plate separation device 1 of the scope item 7 wherein a plurality of through holes are formed in the sputum and can be formed in the box; == juxtaposed A strip-shaped slit, a two-two-two=:=r distance, and a slat on the _ on the slate == the sixth item--the protection side is configured with a box-shaped body, cough box two:: The downward direction of the inner side of the direction of the delivery portion is "for the wheel". Patent Application No. 26 1358383 21003pif wherein a plurality of through holes are formed in the conveyor belt, and a plurality of elongated slits are formed in parallel along the conveying direction on the outer side wall portion of the box-shaped body, and The arrangement pitch of the through holes in the conveyor belt in the width direction is the same as the arrangement pitch of the slits in the box-like body in the width direction. The protective sheet separating device according to any one of claims 4 to 6, wherein the conveying speed of the conveying belt is variable. The protective plate separating device according to any one of the items 4 to 6, wherein the processing device is provided with a conveying device for displacing the glass substrate from the conveying belt, and the protective plate is disposed at the processing position The conveyor belt is driven at a lower speed than the conveyor before the conveyance direction of the conveyor belt changes, and the conveyor and the conveyor belt are driven at the same speed after a set time after the passage of the protection panel.

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