JP5553183B2 - Glass plate laminate and method for taking out glass plate - Google Patents

Description

  The present invention relates to a glass plate laminate and a method for taking out a glass plate.

  When used as a glass plate that incorporates an electric circuit or the like on its surface, particularly a non-alkali glass plate used for liquid crystal displays, even if there are slight scratches or contamination on the surface Disconnection or patterning failure occurs. Therefore, such glass plates are required to have extremely high surface characteristics.

  Therefore, as a method for preventing scratches or contamination during storage or transportation of glass plates, a method of sandwiching sheets such as paper between laminated glass plates and separating adjacent glass plate surfaces has been conventionally employed. In addition, the form which interposed the sheet | seat between glass plates is called a glass plate laminated body.

  Patent Document 1 discloses a form in which glass plate laminates are slanted and stacked vertically on a packing pallet, and Patent Document 2 discloses a form in which glass plate laminates are stacked horizontally. ing.

  The glass plate on which the sheet is interposed is conveyed from the glass manufacturing factory to the glass plate use factory for processing and assembling the glass plate in a state of being stacked on the packing pallet, and 1 is removed from the packing pallet at the glass plate use factory. One by one is taken out. At this time, an operation of adsorbing and taking out the glass plate by the glass adsorbing unit of the taking-out apparatus and then taking out the sheet by the sheet adsorbing unit is repeatedly performed.

  In particular, in the glass plate laminated body 2 packed in a flat manner on the tray 1A of the packaging pallet 1 of Patent Document 2 shown in FIG. 11, the sheet presser provided on the side of the opposite side surfaces of the glass plate laminated body 2 is used. By moving the tool 4 in the direction of the arrow, a portion of the sheet 3 A that protrudes from the edge of the glass plate G is pressed against the end surface of the glass plate G, and the uppermost glass plate G is moved to the glass adsorption portion ( Take it out (not shown). That is, only the glass plate G is taken out from the sheet 3 electrostatically attracted to the glass plate G. In addition, the sheet 3 is discharged with static electricity using a static eliminator (not shown), and air is injected between the sheet 3 and the glass plate G below the sheet 3, so that the sheet 3 and the glass plate are discharged. G is peeled off, and thereafter, only the sheet 3 is taken out from the glass plate G by a sheet adsorbing portion (not shown).

International Publication No. 2009/008413 International Publication No. 2008/105190

  However, when the sheet 3 is strong (the Gurley stiffness described later is high), the sheet presser that bent and pressed a part of the sheet 3A protruding from the edge of the glass plate G when the packing pallet 1 is conveyed. When a member (not shown) is removed from the packing pallet 1, the sheet 3A has a characteristic of returning to its original shape (the shape before bending) with the passage of time. When the sheet pressing jig 4 shown in FIG. 11 is moved toward the end face of the glass plate G in this state, the sheet 3A of the uppermost sheet 3 is moved to the end face of the glass plate G as shown in FIG. The uppermost sheet 3 is taken out together with the uppermost glass plate G.

  This invention is made | formed in view of such a situation, and it aims at providing the taking-out method of the glass plate laminated body which can take out only a glass plate favorably, and a glass plate.

In order to achieve the object, the present invention is a glass plate laminate in which at least two or more glass plates are laminated substantially horizontally and vertically between sheets of the glass plates, wherein said glass plate from at least a portion of the edge of the glass plate so that the sheet protrudes is laminated Gurley stiffness of the sheet Ri der less 1.0 mN, the sheet is a slip sheet having the streaks, the The direction of the streaks of the slip sheet that protrudes from at least a part of the edge of the glass plate and hangs downward is the direction in which the slip direction of the slip sheet pressing jig of the glass plate take-out device proceeds toward the end surface of the glass plate. A glass plate laminate that is orthogonal to each other is provided.

  JAPAN TAPPI Paper Pulp Test Method 2000 Edition When the Gurley stiffness (hereinafter referred to as Gurley stiffness) of a sheet conforming to No. 40 is high, that is, when the sheet is stiff, the above-described problems occur.

  The present inventor has confirmed through experiments that the Gurley stiffness of the sheet should be 1.0 mN or less in order to prevent such problems. Therefore, according to the glass plate laminate of the present invention, the sheet that protrudes from the edge of the glass plate hangs down due to its softness, and is reliably pressed against the end surface of the glass plate by the sheet pressing jig. From this, only the glass plate can be taken out well.

  According to the present invention, the length from the edge of the glass plate to the edge of the sheet is preferably 15 mm or more.

  According to the present invention, by setting the protruding length to 15 mm or more, the part of the sheet hangs well together with the weight of the part of the protruding sheet.

Further, at least a part of the edge of the glass plate, wherein at least two or more glass plates are laminated in a vertical direction through a sheet between the glass plates in a horizontal direction. the sheet is the glass plate laminated so as to protrude, the seat of the Gurley stiffness is Ri der less 1.0 mN, partially pressing member of the sheet hanging in the lower protrudes from the edge of the glass plate from in the glass plate laminate is pressed against the end face of the glass plate by using a slip sheet having streaks as the sheet, the glass sheet take-out apparatus, the glass plate of the slip sheet holding jig of the glass plate take-out device positioning the traveling direction toward the end face, the glass plate stacked body so that the direction is perpendicular to the streaks of the interleaving paper, protrude from the edge of the glass plate of the glass plate laminate Are, and the slip sheet has been pressed by the pressing member, after pressing the end face of the glass plate by the interleaving paper pressing jig, the glass plate of the uppermost of the glass plate laminate, the glass plate take-out Provided is a method for taking out a glass plate taken out by a glass adsorbing portion of the apparatus.

  According to the method for taking out a glass plate of the present invention, when using interleaving paper as a sheet, in the glass plate taking-out device, the direction of traveling toward the end face of the glass plate of the interleaving paper holding jig, The glass plate laminate is positioned so that the direction of the line of the interleaving paper is orthogonal. Next, the slip sheet protruding from the edge of the glass plate of the glass plate laminate is pressed against the end surface of the glass plate by a slip sheet pressing jig. Thereafter, the uppermost glass plate of the glass plate laminate is taken out by the glass adsorption unit. Thereby, only the glass plate can be taken out more smoothly.

  According to the glass plate laminate and the glass plate take-out method according to the present invention, since the Gurley stiffness of the sheet is 1.0 mN or less, the sheet protruding from the edge of the glass plate hangs down and is securely pressed by the sheet pressing jig. Therefore, only the glass plate can be taken out from the glass plate laminate. Also, when using interleaving paper as a sheet, by taking out the glass plate so that the interleaving line is orthogonal to the direction of progress toward the end surface of the glass plate of the interleaf pressing jig, Only the glass plate can be taken out more smoothly.

FIG. 1 is an external view of a packing pallet packed with a glass plate laminate according to an embodiment. FIG. 2 is a schematic diagram illustrating a procedure for taking out a glass plate and a slip sheet of a glass plate laminate packaged in a packing pallet. Drawing 3 is a mimetic diagram explaining the taking-out procedure of the glass plate of a glass plate laminated body packed in a packing pallet, and a slip sheet. FIG. 4 is a schematic diagram illustrating a procedure for taking out a glass plate and a slip sheet of a glass plate laminate packaged in a packing pallet. FIG. 5 is a schematic diagram illustrating a procedure for taking out a glass plate and a slip sheet of a glass plate laminate packaged in a packing pallet. FIG. 6 is a schematic diagram illustrating a procedure for taking out the glass plate and the slip sheet of the glass plate laminated body packed in the packing pallet. FIG. 7 is a schematic diagram illustrating a procedure for taking out the glass plate and the slip sheet of the glass plate laminate packed in the packing pallet. FIG. 8 is a schematic diagram illustrating a procedure for taking out a glass plate and a slip sheet of a glass plate laminated body packed in a packing pallet. FIG. 9 is an explanatory diagram showing a form of a glass plate take-out device that advances the slip sheet pressing jig in a direction orthogonal to the direction of the lines. FIG. 10 is an explanatory view showing a form of a glass sheet take-out device for advancing the slip sheet holding jig in parallel to the direction of the lines. FIG. 11 is a schematic diagram showing the configuration of a conventional glass plate laminate. FIG. 12 is a schematic diagram illustrating a problem in taking out a glass plate from the glass plate laminate shown in FIG. 11.

  Hereinafter, preferred embodiments of a glass plate laminate and a method for taking out a glass plate according to the present invention will be described in detail with reference to the accompanying drawings. In this specification, “upward” means vertically upward, and “downward” means vertically downward.

  In the following embodiment, the slip sheet 14 is illustrated as a sheet.

  FIG. 1 is an external view of a packing pallet 12 in which glass plate laminates 10 according to an embodiment are packed in a flat stack. 2 to 8 are schematic diagrams illustrating a time series of procedures for taking out the glass plate G of the glass plate laminate 10 and the interleaf paper 14 packed on the packing pallet 12.

  In the packing pallet 12 shown in FIG. 1, a plurality of (for example, 80 to 150) rectangular glass plates G, G... (See FIG. 2) are substantially horizontal and larger than the glass plate G between the glass plates. The sheets are stacked and accommodated via the interleaf papers 14, 14. The glass plate G is a thin large glass plate used for FPD. For example, the plate thickness is 0.2 mm to 2.8 mm, and the vertical and horizontal sizes are about 2400 mm × 2100 mm to 3200 mm × 3000 mm. .

  The slip sheet 14 has a rough surface with a smoothness of 18 seconds or less (JIS P 8119, 1976), for example, and the contact area with the surface of the glass plate G is reduced so that the resin content contained in the slip sheet 14 is reduced. A paper quality that is transferred to the glass plate G and does not cause paper texture, burns, dirt, etc. on the surface of the glass plate G is selected and used. Furthermore, the resin content contained in the interleaf paper 14 is 0.05% by mass or less (JIS P 8205, 1976), and the paper quality that does not adversely affect the quality of the glass plate G itself due to the combined effect with the paper surface roughness described above. Is selected and used.

  The packing pallet 12 mainly includes a receiving base 16, a mounting plate 18, and a receiving tray 19 having a rectangular shape in plan view, and a plurality of slip sheet pressing members 20, 20. Further, since guide members 22, 22... That are pallet stacking members are erected at the four corners of the mounting plate 18, it is advantageous when the packing pallet 12 is transported in a plurality of layers stacked vertically. is there.

  The cradle 16 is configured in a frame shape by a plurality of steel materials. As the material of the cradle 16, any metal, resin, or the like can be used as long as it has a desired rigidity and does not generate particles, but aluminum or an aluminum alloy is preferable in terms of weight, rigidity, and cost. Further, forklift openings 24 into which forks of a forklift (not shown) are inserted are formed at two positions on one side surface of the cradle 16 on all side surfaces of the cradle 16. As a result, the fork of the forklift can be inserted into the packing pallet 12 from any of the longitudinal and lateral sides of the cradle 16, thereby enabling efficient transportation work.

  The mounting plate 18 is mounted on the cradle 16 via a vibration absorbing member, an inclination angle setting member, and the like (not shown), and a tray 19 is fixed to the mounting plate 18.

  For example, two slip sheet pressing members 20 are arranged on the side surfaces of the four sides of the tray 19 with a predetermined interval, and are detachably fixed to the tray 19 with screws 26 and 26. When the slip sheet pressing member 20 is fastened to each side surface of the tray 19 by the screws 26, the glass sheet G is pressed from the end surface by the slip sheet pressing member 20, and the slip sheet pressing members 20, 20 on each side surface of the tray 19. The end surface of the glass plate G is clamped by. Further, the slip sheet 14A (see FIG. 2) protruding from the edge of the glass plate G is pressed by the slip sheet pressing member 20, and the slip sheet 14 is fixed to the tray 19 by the slip sheet pressing members 20, 20. . Thereby, the laminated glass plates G, G... Are fixed to the tray 19 via the interleaf paper 14.

  In this embodiment, the two slip sheet holding members 20 and 20 are arranged on each side surface of the tray 19, but the present invention is not limited to this, and the length of each side surface is set on each side surface of the tray 19. Only one corresponding one may be provided, or three or more short slip sheet pressing members may be provided along each side surface.

  Further, the slip sheet pressing member 20 presses the slip sheet 14 </ b> A that protrudes from the edge of the glass plate G and hangs downward to the end surface of the glass plate G (side surface of the glass plate laminate 10). At this time, since the overlapping portion of the end portion of the slip sheet 14A is pressed by the slip sheet pressing member 20, the slip sheet pressing member 20 does not directly contact the end surface of the glass plate G, and the flexibility of the slip sheet 14 is achieved. Thus, it is possible to reliably press the glass plate laminate 10 from the side surfaces of the four sides while protecting the glass plate G. Further, when the glass plate G tries to move up and down by vibration during conveyance of the packing pallet 12 in which the glass plate laminate 10 is packed, the interleaf paper 14A is interposed between the interleaf pressing member 20 and the end surface of the glass plate G. Since the slip sheet 14 is held and fixed to the tray 19, the vertical movement of the glass plate G can be suppressed. In addition, the lateral displacement of the glass plate G can be prevented. Therefore, it is preferable that the uppermost layer of the glass plate laminate 10 is the slip sheet 14.

  The interleaving paper 14 of the embodiment has a Gurley stiffness of 1.0 mN or less, preferably 0.5 mN or less. When the Gurley stiffness of the slip sheet 14 exceeds 1.0 mN, that is, when the slip sheet 14 is strong, the slip sheet 14A that protrudes from the edge of the glass plate G returns to its original shape over time. Therefore, it does not sag and cannot be pressed against the end face of the glass sheet G by the slip sheet pressing jig 30 (see FIG. 2 and the like), and the slip sheet 14 may be taken out together with the glass sheet G. In order to prevent such handling troubles of the glass plate G, the inventor of the present application confirmed that the Gurley stiffness of the interleaf paper 14 was set to 1.0 mN or less.

  Hereinafter, with reference to the schematic diagrams shown in FIGS. 2 to 8, a procedure for taking out the glass sheet G of the glass sheet laminate 10 packed in the packing pallet 12 and the interleaf paper 14 will be described.

  FIG. 2 is a glass plate laminate in which the slip sheet pressing member 20, the guide member 22, and the uppermost slip sheet 14 are removed from the packing pallet 12 shown in FIG. 1 by an operator or a slip sheet removing device (not shown). 10 is a side view of FIG.

  As shown in FIG. 2, the slip sheet 14 </ b> A protruding from the edge of the glass plate G hangs down along the end surface of the glass plate G because the Gurley stiffness is 1.0 mN or less. In this state, when the slip sheet pressing jigs 30 and 30 provided on the opposite side surfaces of the glass plate laminated body 10 are moved toward the end surface of the glass plate G by a driving unit such as a cylinder device, it is shown in FIG. In this way, all the slip sheets 14A, 14A... Are pressed against the end face of the glass plate G by the slip sheet pressing jigs 30, 30.

  In this state, as shown in FIG. 4, the uppermost glass plate G is adsorbed by the plurality of adsorbing pads 34, 34... Of the glass adsorbing portion 32 constituting the glass plate extracting device. Thereafter, air is ejected from the nozzle 36 into the gap between the adsorbed glass plate G and the interleaving paper 14 below the adsorbed glass plate G, and the neutralizing process of the interleaving paper 14 is performed by the neutralizing device 38. However, the glass adsorption | suction part 32 is raised at low speed. At this time, since the uppermost interleaf 14A in FIG. 4 is pressed against the end surface of the glass plate G along the end surface of the glass plate G by the interleaf pressing jig 30, the uppermost (first) glass sheet is pressed. Only the plate G is taken out from the glass plate laminate 10.

  Next, when the first glass plate G is taken out, the slip sheet holding jigs 30 and 30 are retracted sideways from the end surface of the glass plate G as shown in FIG.

  Next, as shown in FIG. 6, the slip sheet adsorbing section 40 constituting the glass plate take-out device is moved above the slip sheet 14 located at the uppermost position and is moved downward toward the slip sheet 14, thereby The slip sheet 14 is sucked by the suction pads 42 and 42 of the paper suction unit 40.

  Then, as shown in FIG. 7, air is ejected from the nozzle 36 into the gap between the adsorbed interleaf paper 14 and the glass plate G below the adsorbed interleaf paper 14, and the neutralization process is performed by the neutralization device 38. Then, the slip sheet 14 is raised at a low speed. Thereby, only the slip sheet 14 can be taken out from the glass plate laminate 10. FIG. 8 is a side view of the interleaf paper 14 taken out from the glass plate laminate 10. Thereafter, when the second and subsequent glass sheets G and the second and subsequent slip sheets 14 are subsequently taken out, the procedure shown in FIGS. 2 to 7 is repeatedly performed.

  Incidentally, as shown in the plan views of FIGS. 9 and 10, the interleaf 14 has a plurality of streaks 14B, 14B,... Formed in parallel on the surface of the interleaving paper 14 and is aligned depending on the direction of the streaks 14B, 14B. The Gurley stiffness of the paper 14 is different.

  That is, the Gurley stiffness (for example, 0.24 mN) when the slip sheet 14 is pressed by moving the slip sheet pressing jig 30 in a direction orthogonal to the direction of the lines 14B, 14B. ) And the slip sheet holding jig 30 is advanced in parallel to the direction of the lines 14B, 14B... As shown in FIG. 10, and the Gurley stiffness (for example, 0.5 mN) when the slip sheet 14 is pressed (the latter). ) Is lower in the former Gurley stiffness. That is, compared to the latter, the former has a characteristic that the slip sheet 14A (see FIG. 2 and the like) that protrudes from the edge of the glass plate G is likely to hang down and is difficult to return to the original shape.

  The method of taking out the glass plate G of the embodiment pays attention to such characteristics of the slip sheet 14. Even when the same slip sheet 14 is used, the slip sheet pressing jig 30 is advanced in a direction orthogonal to the direction of the lines 14B, 14B... As shown in FIG. The laminated body 10 is positioned on the glass plate take-out device. If the glass plate laminate 10 is positioned in this manner, the slip sheet 14 protruding from the edge of the glass plate of the glass plate laminate 10 can be easily pressed against the end surface of the glass plate G by the slip sheet pressing jig 30. . Thereafter, the uppermost glass plate G of the glass plate laminate 10 is taken out by the glass adsorbing portion 32 as shown in FIG. Thereby, the taking-out method of the glass plate G of embodiment can take out only the glass plate G smoothly.

  In the embodiment, the slip sheet 14 is exemplified as the sheet, but the sheet is not limited to this, and examples thereof include a resin film, a resin sheet, and a foamed resin sheet. Alternatively, a sheet in which at least two of these sheets are stacked and integrated may be used. Moreover, a glass plate shall include the glass plate by which the film is previously affixed on the surface. In order to further suppress the vertical movement of the glass plate G during conveyance while preventing the sheet from being soiled or damaged due to the influence from the outside of the packing pallet 12, a protective sheet that is stronger than the sheet and is not easily damaged is made of glass. It is preferable to cover the plate laminate 10 and fix the protective sheet to the tray 19 by the slip sheet pressing member 20. For example, when the sheet is a slip sheet, the protective sheet is preferably a resin sheet that is stronger than the slip sheet.

  Although the thickness of the said sheet | seat is not limited, 0.01 mm-0.2 mm are suitable for thickness when it is more than the sheet size corresponding to the glass plate for 6th generation FPD (for example, 1500 mm x 1800 mm).

  Further, it is particularly preferable that the protruding margin from the edge of the glass sheet G of the protruding slip sheet 14A (the length from the edge of the glass sheet G to the edge of the slip sheet 14A) is 15 mm or more. That is, by setting the length of the protruding interleaving paper 14A to 15 mm or more, the interleaving paper 14A hangs well in combination with its own weight.

  When the interleaving paper 14 is used as a sheet, the raw material of the interleaving paper may be waste paper, virgin pulp, and a mixture thereof. Furthermore, a raw material containing cellulose or the like may be used.

  In the embodiment, it is preferable that the interleaf paper 14 does not contain foreign matters larger than 200 μm. When the size of the foreign matter is 200 μm or less, there is no possibility that the glass plate G is damaged during storage and transportation of the glass plate G. In addition, since the size of the foreign matter serving as the threshold differs depending on the thickness of the slip sheet 14 and the material of the glass plate G, the size of the foreign matter is determined each time depending on the material of the target glass plate G and the thickness of the slip sheet 14. is necessary.

  In the present embodiment, the interleaf paper 14 has a size of 1550 × 1850 mm and a thickness of 0.06 to 0.1 mm, and the glass plate G is a glass plate for FPD (trade name AN100, manufactured by Asahi Glass Co., Ltd.). It was. The size of the interleaf paper 14 does not need to be larger than the area of the surface (main surface) of the glass plate G. That is, even when the area of the interleaf paper 14 is smaller than the main surface of the glass plate G, it is only necessary that a part 14A of the interleaf paper 14 protrudes from the edge of the glass plate G. However, a form in which a part of the interleaf paper 14 protrudes from the entire edge of the glass plate G is preferable.

  Further, the position where the interleaf sheet 14 is pressed against the end surface of the glass plate G by the interleaf sheet pressing jig 30 is preferably the position where it is pressed by the interleaf sheet pressing member 20 shown in FIG. Since this position is a position where the bending wrinkles are strongly applied by the interleaf sheet pressing member 20 rather than other positions, the pressing by the interleaf sheet pressing jig 30 is performed well.

Although the present invention has been described in detail and with reference to specific embodiments, it will be apparent to those skilled in the art that various modifications and variations can be made without departing from the scope and spirit of the invention.
This application is based on Japanese Patent Application No. 2011-040508 filed on Feb. 25, 2011, the contents of which are incorporated herein by reference.

  DESCRIPTION OF SYMBOLS 10 ... Glass plate laminated body, 12 ... Packing pallet, 14 ... Interleaving paper, 14A ... Overhanging interleaving paper, 16 ... Stand, 18 ... Mounting plate, 19 ... Receptacle, 20 ... Interleaf presser member, 22 ... Guide member , 24 ... Forklift opening, 26 ... Screw, 30 ... Interleaf holding jig, 32 ... Glass suction portion, 34 ... Suction pad, 36 ... Nozzle, 38 ... Static elimination device, 40 ... Interleaf suction portion, 42 ... Suction pad

Claims (3)

It is a glass plate laminate in which at least two or more glass plates are laminated in a vertical direction through a sheet between the glass plates in a substantially horizontal direction, from at least a part of the edge of the glass plate The glass plates are laminated so that the sheet protrudes,
Gurley stiffness of the sheet is Ri der following 1.0mN,
The sheet is a slip sheet having lines,
The direction of the interleaving line that protrudes from the edge of the glass plate and hangs downward is in a direction to advance toward the end surface of the glass plate of the interleaf pressing jig of the glass plate taking-out device. A glass plate laminate perpendicular to the substrate. It is a glass plate laminate in which at least two or more glass plates are laminated in a vertical direction through a sheet between the glass plates in a substantially horizontal direction, from at least a part of the edge of the glass plate The glass plates are laminated so that the sheet protrudes,
Gurley stiffness of the sheet Ri der less 1.0 mN, a glass plate laminate is pressed against the end face of the glass sheet by partially pressing member of the sheet hanging in the lower protrudes from the edge of the glass plate In
In the glass plate take-out device, using a slip sheet having a line as the sheet, the direction of progress toward the end surface of the glass plate of the slip sheet holding jig of the glass plate take-out device, and the direction of the line of the interleaf Doo is positioning the glass plate stacked body so as to orthogonally, are protruding from the edge of the glass plate of the glass plate laminate, and the slip sheet has been pressed by the pressing member, wherein the interleaf sheet presser jig The glass plate taking-out method of taking out the uppermost glass plate of the glass plate laminated body by the glass adsorbing part of the glass plate taking-out device after pressing against the end face of the glass plate with a tool. The method for removing a glass plate according to claim 2 , wherein a length from the edge of the glass plate to the edge of the sheet is 15 mm or more.

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