JP2011143946A - Overlapped glass plate - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an overlapped glass plate for preferably taking out a slip sheet protruding from the top side of a glass plate. <P>SOLUTION: For the overlapped glass plate 12, both side edges 10a, 10b of a slip sheet projecting sideways from both sides of a glass plate G of all slip sheets 10, 10, ... for the overlapped glass plate 12 are folded toward an inclining table 22 along both sides of the glass plate G. This configuration generates a drag in the hanging down direction at the top edge 10c of the slip sheet projecting from the top side of the glass plate G. The drag increases the rigidity of the top edge 10c of the sheet 10 and the edge 10c does not hang down. Thus, the top edge 10c of the sheet 10 of the plate 12 is surely held by a suction pad whose suction position is memorized in advance, and the sheet 10 is preferably taken out from a pallet 14. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a glass plate laminate, and more particularly to a glass plate laminate in which a plurality of glass plates are laminated via interleaving paper.

  Glass plates for FPD (Flat Panel Display) such as architectural glass plates, automotive glass plates, glass substrates for plasma displays and liquid crystal glass substrates are not covered on the surface during storage or transportation. Contaminated and prone to product defects. In particular, when used as a glass substrate that incorporates an electrical circuit on its surface, such as a non-alkali glass substrate used for liquid crystal displays, disconnection and patterning defects may occur even if there is slight wrinkles or contamination on the surface. To do. Therefore, such a glass substrate is required to have extremely high surface characteristics.

  The wrinkles on the surface of a glass plate are often generated by rubbing between adjacent glass plates when the glass plates are stacked and stored or transported. Moreover, the contamination of the surface of the glass plate often occurs when organic substances (contaminants) in the transport atmosphere adhere to the surface of the glass plate. This organic matter is difficult to remove from the surface of the glass plate only by washing with water. Moreover, this organic substance needs to be washed using, for example, an acid or an alkali. However, such cleaning deteriorates the working environment during cleaning and increases cleaning and waste liquid treatment costs. Moreover, even if such washing is performed, it is difficult to completely remove the organic matter from the surface of the glass plate.

  Therefore, as a method for preventing wrinkles and contamination during storage and transportation of glass plates, so-called slip sheets that separate the surfaces of adjacent glass plates by interposing paper between the glass plates to be laminated. The glass plate laminated body which interposed is disclosed by patent document 1. FIG.

  Patent Document 1 discloses a transfer device that adsorbs a glass plate and a slip sheet in a horizontal posture and simultaneously transfers them to a pallet in a vertical posture.

  This transfer device is provided with a glass plate suction means and a slip sheet suction means in a robot hand, and transfers the glass plate and the slip sheet as described above by the operation of the robot. The hand is provided with an air nozzle. The air sprayed from the air nozzle is blown onto the upper edge portion of the slip sheet protruding from the upper side portion of the glass plate leaning on the pallet, and the upper edge portion is prevented from being bent and drooping to the glass plate side.

  Further, Patent Document 1 discloses that the lower edge portion of the slip sheet that protrudes from the lower side portion of the glass plate is bent. This bending prevents the lower edge portion from being caught in the next glass plate when the next glass plate is transferred to the pallet. That is, when placing the glass plate on the interleaving paper having the bent portion, the glass plate is overlapped so that the lower side portion of the glass plate is slightly covered on the fold line of the bent portion of the interleaving paper. As a result, the angle between the folded surface and the slip sheet surface overlapping the glass plate spreads to 90 degrees or more and becomes an obtuse angle, so that the folded portion is pressed against the floor rail side of the pallet when transferred to the pallet. Therefore, when the next glass plate is transferred, the lower edge portion of the slip sheet can be prevented from being caught in the next glass plate.

  By the way, the glass plate laminated body in which the interleaving paper is interposed is packed in a pallet of Patent Document 1 and conveyed from the glass plate manufacturer to a glass plate using manufacturer that processes and assembles the glass plate. Then, the glass plates are taken out one by one from the pallet by the glass plate manufacturer using the take-out device. At this time, the operation of sucking and holding the glass plate by the glass plate holding portion of the take-out device and then taking out the slip sheet by the slip sheet holding portion is repeatedly performed. When taking out the interleaving paper, the upper edge portion of the interleaving paper protruding from the upper side of the glass plate is often held and taken out by an interleaving paper gripping portion such as suction or chucking.

JP 2001-139138 A

  However, when the rigidity of the slip sheet is weak, the slip sheet at the edge portion projected from the side of the glass plate may hang down, and the slip sheet may not be gripped satisfactorily by the slip sheet gripping part. . The suction position of the slip sheet gripping portion is taught in advance by a robot and is moved toward the suction position. Therefore, when there is no slip sheet at the suction position, that is, when the slip sheet hangs down, the slip sheet cannot be satisfactorily gripped by the slip sheet gripping portion.

  In the case of a vertically stacked form in which the glass plate is stacked on the pallet in a state where the glass plate is slanted diagonally as in Patent Document 1, the upper edge portion of the slip sheet protruding from the upper side portion of the glass plate (also referred to as the slip sheet margin portion). ) Hangs down to the back side, and when taking out the slip sheet, the slip sheet gripping part may not be able to grip the slip sheet well.

  In particular, the size of the glass substrate for FPD tends to be increased, and accordingly, the slip sheet is about the same size as the glass substrate for FPD. From this, for example, the size of the slip sheet used for packing the glass substrate for 6th generation FPD is about 1600 mm × 1900 mm. When the slip sheet size is increased in this way, there is a problem that the frequency of occurrence of trouble that the slip sheet cannot be taken out due to a gripping error of the slip sheet increases.

  In Patent Document 1, the lower edge portion of the slip sheet is projected from the lower side portion of the glass plate. However, if the lower edge part of the slip sheet is protruded from the lower edge of the glass plate, the slip sheet at the lower edge part becomes an obstacle, and the glass sheet cannot be stacked on the pallet without any gaps. May be damaged. Therefore, it is preferable not to project the slip sheet from the lower side of the glass plate.

  The present invention has been made in view of such circumstances. The upper edge portion of the slip sheet protruding from the upper side of the glass plate is securely gripped by the slip sheet gripping portion, and the slip sheet is satisfactorily taken out from the pallet. An object of the present invention is to provide a glass plate laminate that can be used.

  In order to achieve the above object, the present invention provides a pallet including a mounting table on which a bottom side portion of a plate-like body is placed and a back support that supports the back surface of the plate-like body. Are stacked with interleaving paper interposed between the respective plate-like bodies, and above and on the upper side and both side sides in a state where the interleaving paper is placed on the pallet of the plate-like body. A glass plate laminate having a predetermined amount protruding toward the side, wherein at least a part of both side edge portions of the slip sheet protruding sideways from both side portions of the glass plate is bent. Provide the body.

  According to the glass plate laminate of the present invention, since at least a part of both side edge portions of the interleaving paper protruding sideways from the both side portions of the glass plate is bent, it is possible to protrude from the upper side portion of the glass plate. The upper edge portion of the paper generates drag in the direction of drooping. Due to this drag, the upper edge portion of the interleaving paper becomes stiff and does not hang down. Therefore, according to the present invention, the upper edge portion of the slip sheet can be reliably gripped by the slip sheet gripping portion, and therefore the slip sheet can be satisfactorily taken out from the pallet.

  Moreover, as for the glass plate laminated body of this invention, it is preferable that the both-sides edge part of the said slip is bend | folded toward the said inclination stand.

  According to the present invention, the glass plate laminate is stood and stored obliquely on the tilting table of the pallet, and both side edge portions of the slip sheet are bent toward the tilting table. For this reason, when taking out a glass plate from a pallet by a glass plate holding part, the both-sides edge part of the folded interleaving paper does not get in the way of a glass plate holding part. Therefore, according to this invention, a glass plate can be stably taken out by a glass plate holding part.

  Further, according to the present invention, it is preferable that the folding angle of both side edge portions of the slip sheet is about 10 ° to 90 ° with respect to the surface of the slip sheet excluding the both side edge portions.

  When the bending angle of both side edge portions of the slip sheet is less than 10 °, a drag force in the sag direction cannot be sufficiently applied to the upper edge portion of the slip sheet. Also, if the bending angle exceeds 90 °, the bent side edges are sandwiched between the previously laminated glass plates, so that the glass plates cannot be stacked without gaps, and during packing and transporting Since there exists a possibility that the glass plate G may be damaged, it is not preferable. Therefore, the folding angle of the slip sheet is preferably in the range of about 10 ° to 90 °. When a plurality of glass plates and a plurality of interleaving papers are laminated and then both side edge portions of all interleaving papers are folded at once, the upper limit of the folding angle is 90 °. In order to simplify the folding man-hours of both side edge portions of the interleaving paper, it is preferable to bend the both side edge portions of the plurality of interleaving papers laminated as described above.

  According to the present invention, in the interleaving paper interposed between the glass plates, the upper side of the glass plate is bent by bending both side edge portions of the interleaving paper protruding sideways from the both side portions of the glass plate. Since the rigidity of the upper edge portion of the slip sheet protruding from the portion is strengthened, the upper edge portion does not hang down. Therefore, since the upper edge part of the slip sheet is securely gripped by the slip sheet gripping portion, the slip sheet can be satisfactorily taken out from the pallet.

The perspective view of the pallet in which the glass plate laminated body of embodiment of this invention was mounted. The perspective view which showed the whole structure of the pallet shown in FIG. Side view of pallet packed with glass plate laminate Explanatory drawing showing the bending jig for glass sheet laminate

  Hereinafter, preferred embodiments of a glass plate laminate according to the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 shows a glass plate laminate 12 according to an embodiment in which a plurality of rectangular glass plates G are vertically stacked via rectangular interleaving papers 10, 10. Moreover, the state by which this glass plate laminated body 12 was mounted in the pallet 14 for glass plate packing is shown.

  FIG. 2 is a perspective view showing the overall configuration of the pallet 14 and shows the lower lateral pressing members 15A and 15B and the upper lateral pressing members 17A and 17B. FIG. 3 is a right side view of the pallet 14 in which the glass plate laminate 12 is packed. Further, FIG. 3 shows a state in which the side portion of the glass plate laminate 12 is pressed by the lower lateral pressing member 15B and the upper lateral pressing member 17B and the glass plate laminated body 12 is packed on the pallet 14. Yes. That is, the packaging form of the glass plate laminated body 12 is shown in FIG. 3, and the taking-out form of the glass plate G and the interleaf paper 10 is shown in FIG. That is, when the glass plate G and the interleaf sheet 10 are taken out, the lower lateral pressing members 15A and 15B and the upper lateral pressing members 17A and 17B shown in FIG.

As shown in FIG. 2, the pallet 14 includes a pedestal 18 having a flat mounting surface 16 formed on the upper surface. In addition, the pallet 14 is provided with a flat bottom plate (mounting table) 20 on which the bottom side portion of the glass plate is placed while being inclined with respect to the mounting surface 16 at an angle (θ ₁ ) of about 18 °. Further, the pallet 14 is provided with an inclined table 22 that is inclined with respect to the bottom plate 20 at an angle of about 90 ° (θ ₂ ). A flat resin back plate (back support) 24 is fixed to the front surface of the inclined base 22 with an adhesive. The back plate 24 receives the back surface of the glass plate G, and the glass plate laminate 12 is mounted on the pallet 14 in a vertical position. The number of glass plates G and interleaf sheets 10 mounted on the pallet 14 is, for example, 300 or more in the case of a sixth generation glass substrate and 250 or more in the case of a seventh generation glass substrate.

The pallet 14 also supports the bottom plate receiving member 26 that supports the bottom plate 20 on the mounting surface 16 at an angle (θ ₁ ) of about 18 °, and the rear surface of the tilting table 22 that is erected on the mounting surface 16 as shown in FIG. And a frame-shaped receiving member 28.

  The pedestal 18 is formed by welding a large number of short and long steel materials in the vertical and horizontal directions and in the height direction, and the mounting surface 16 is processed to a predetermined flatness by grinding after the welding assembly. Further, the front and rear surfaces of the pedestal 18 are provided with openings 30 and 30 through which forklift claws (not shown) are inserted and removed.

  The interleaf paper 10 is a sheet interposed between the glass plates G in order to prevent the glass plates G from coming into direct contact with each other. The slip paper 10 has a smoothness of the paper of 20 seconds or less, preferably 18 in order to prevent the resin content contained in the slip paper 10 from being transferred to the surface of the glass plate G and causing paper texture, burns, and dirt. The rough surface is less than a second. Thereby, since a contact area with the surface of the glass plate G reduces, transfer of a resin part can be prevented. Further, by setting the resin content of the paper to 0.1% or less, preferably 0.05% or less, the quality of the glass plate G can be maintained by the combined action with the rough surface. Therefore, even if particles or the like are generated on the interleaf paper 10, the particles or the like do not adhere to the surface of the glass plate G in combination with the glass plate G leaning on the pallet 14 and packing.

  In order to protect the glass plate G, the interleaf paper 10 is a paper having a size larger than that of the glass plate G, and a part of the interleaf paper 10 protrudes from the side portion of the glass plate G. Of the protruding portion of the slip sheet 10, the elongated upper edge portion 10c protruding from the upper side of the glass plate G is sucked and gripped by a suction pad (slip paper gripping portion) of an unillustrated unpacker, The slip sheet 10 is taken out from the pallet 14. In addition, when making the glass plate G into a vertical stack like the pallet 14, if the slip sheet 10 protrudes from the lower side portion of the glass plate G, the glass plate G cannot be stacked without any gaps, and the glass plate G is damaged during packing and transportation. There is a risk of doing. Therefore, the slip sheet 10 protrudes only from the upper side of the glass plate G and the left and right sides. The raw material of the interleaving paper 10 may be waste paper, virgin pulp, or a mixture thereof. Furthermore, a raw material containing cellulose or the like may be used.

  As shown in FIG. 1, all the interleaf sheets 10, 10... Is bent to the back plate 24 side along both sides.

  In the glass plate laminate 12, when the side edge portions 10a and 10b of the slip sheet 10 projecting laterally from both side portions of the glass plate G are bent, the upper edge of the slip sheet projecting from the top side portion of the glass plate G In the portion 10c, a drag force is generated in the sag direction. Due to this drag, the upper edge portion 10c of the interleaf paper 10 has a high rigidity so that it does not hang down.

  Therefore, according to the glass plate laminate 12 of the embodiment, the upper edge portion 10c of the interleaf paper 10 is securely held by the suction pad in which the suction position is stored in advance. Therefore, the slip sheet 10 can be taken out from the pallet 14 satisfactorily.

  Further, the side edge portions 10 a and 10 b of the interleaf paper 10 are preferably bent toward the inclined base 22 of the pallet 14. When the side edge portions 10a and 10b are bent in such a direction, the side edge portions 10a of the folded interleaf paper 10 are taken out when the glass plate G is taken out from the pallet 14 by a glass plate suction pad (not shown: glass plate gripping portion). 10b does not interfere with the glass plate suction pad. Therefore, the glass plate G can be stably taken out by the glass plate suction pad. Note that the side edge portions 10 a and 10 b may be bent to the side opposite to the inclined base 22. In this case, a bending angle that does not interfere with the glass plate suction pad may be set.

  Moreover, it is preferable that the bending angle of the both side edge portions 10a and 10b of the interleaving paper 10 is about 10 ° to 90 ° with respect to the surface of the interleaving paper 10 excluding the both side edge portions 10a and 10b. If the bending angle of the side edge portions 10a and 10b is less than 10 °, the upper edge portion 10c of the interleaf paper 10 cannot be given sufficient drag in the direction of drooping, and the upper edge portion 10c may hang down. Further, when the bending angle exceeds 90 °, the bent side edge portions 10a and 10b are sandwiched between the glass plates G that have been previously laminated, so that the glass plates G are loaded on the pallet 14 without any gaps. There is a possibility that the glass plate G may be damaged during packing or transportation. Therefore, the bending angle of the side edge portions 10a and 10b is preferably in the range of about 10 ° to 90 °.

  Next, a bending member that bends both side edge portions 10a and 10b of the interleaf paper 10 will be described.

  This bending member is comprised by lower side pressing member 15A, 15B and upper side pressing member 17A, 17B shown in FIG.

  The lower lateral pressing members 15A and 15B are composed of a main body 32 formed in a plate shape, a handle 34, a pressing plate 36, and the like.

  The main body 32 has a shape obtained by bending a metal plate having a predetermined shape by press molding, and is detachably fixed to the mounting surface 16 of the pedestal 18 by a bolt (not shown). A screw rod 38 is fixed to the center portion of the handle 34, and the screw rod 38 is screwed to the main body 32 in the horizontal direction. A pressing plate 36 is in contact with the tip of the screw rod 38. The pressing plate 36 is engaged with the main body 32 through a pair of guide bars 40, 40 so as to be movable in the horizontal direction. Therefore, when the handle 34 is rotated in the tightening direction, the pressing plate 36 is pushed by the screw rod 38 of the handle 34 and moves in the direction in which the lower side surface of the glass plate laminate 12 is pressed. By this operation, the lower side surface of the glass plate laminate 12 is sandwiched between the press plates 36 and 36 of the pair of lower lateral press members 15A and 15B shown in FIG. 1, and the glass plate laminate 12 is fixed to the pallet 14. . Then, both side edge portions 10 a and 10 b of the slip sheet 10 protruding from both side portions of the glass plate G are bent toward the inclined base 22 by the respective pressing plates 36 and 36.

  Next, the upper lateral holding members 17A and 17B will be described.

  As shown in FIG. 3, a rectangular buffer plate 42 having a predetermined thickness is placed on the surface of the glass plate laminate 12 loaded on the pallet 14, and a front frame 44 is put on the surface. A lower end portion of the front frame 44 is engaged with the pedestal 18, and is tilted about the lower end portion as a fulcrum and is in contact with the surface of the cushioning material 42.

  The upper lateral pressing member 17B is in contact with the side surface of the glass plate laminate 12 with its base end engaged with the inclined base 22 and cantilevered. The upper side pressing member 17 </ b> B folds the right edge portion 10 b of the slip sheet 10 protruding from the right side portion of the glass plate G in FIG.

  Further, a hook 46 is provided on the upper side portion of the front frame 44, and a belt 48 is hung on the hook 46. The belt 48 is arranged so as to cross the upper lateral pressing member 17 </ b> B, and an end portion of the belt 48 is connected to the inclined base 22 via a ratchet type winding device 50. Therefore, by driving the ratchet type hoisting device 50 and winding up the belt 48, the front frame 44 is fixed to the inclined base 22 by the tension of the belt 48. At the same time, the upper side pressing member 17B is pressed against the right side surface of the glass plate laminate 12 by the stretched belt 48, so that the right edge of the slip sheet 10 protruding from the right side portion of the glass plate G is obtained. The portion 10 b is strongly bent toward the inclined base 22.

  Note that the upper lateral pressing member 17A has the same configuration as the upper lateral pressing member 17B. Therefore, the left side edge portion 10a of the slip sheet 10 protruding from the left side portion of the glass plate G is strongly bent toward the inclined table 22 by the upper lateral pressing member 17A.

  As described above, the side edge portions 10a and 10b of the interleaf sheet 10 are bent toward the inclined base 22 by the lower lateral pressing members 15A and 15B and the upper lateral pressing members 17A and 17B.

  Note that the side edge portions 10a and 10b of the interleaf paper 10 are not all bent by the lower lateral pressing members 15A and 15B and the upper lateral pressing members 17A and 17B. That is, a part in contact with the lower lateral pressing members 15A and 15B and the upper lateral pressing members 17A and 17B is strongly bent. In this way, even when part of both side edge portions 10a and 10b of the slip sheet 10 is bent, a drag force is applied to the upper edge portion 10c of the slip sheet 10 in the drooping direction, so that the upper edge portion 10c hangs down. There is no.

  On the other hand, after laminating a plurality of glass sheets G and a plurality of interleaving papers 10, the bending jig 52 shown in FIG. 4 is used to remove all the side edge portions 10a, 10b of all interleaving papers 10. You may bend at once. The bending jig 52 has an L-shaped cross section, a first flat portion 52A that comes into contact with the front surface of the glass plate laminate 12, and a second flat piece that comes into contact with the side surface of the glass plate laminate 12. It consists of a flat part 52B. While the first flat portion 52A is in contact with the front surface of the glass plate laminate 12, and the second flat portion 52B is in contact with the side surface of the glass plate laminate 12, both side edge portions of all the interleaf sheets 10 are obtained. 10a and 10b are bent at a time. When the bending jig 52 is used, the bending angle of the side edge portions 10a and 10b is 90 °. In order to simplify the folding man-hours of the side edge portions 10a and 10b of the interleaf paper 10, the bending jig 52 is used for the side edge portions 10a and 10b of the plurality of interleaving papers 10 stacked as described above. It is preferable to bend at once.

  In the glass plate laminate 12 of the embodiment, the size and thickness of the interleaf paper 10 are not limited, but corresponds to the size of the glass substrate for sixth generation FPD (1500 mm × 1850 mm, thickness 0.2 to 0.7 mm). It is particularly suitable when the size is larger than the size of the slip sheet to be used and when the thickness is 0.06 mm to 0.2 mm. In this size, the width dimension of both side edge portions 10a and 10b of the slip sheet 10 protruding from both side portions of the glass plate substrate is 50 to 100 mm, and the top edge of the slip sheet 10 protruding from the top side portion of the glass substrate. The width dimension (height dimension) of the portion 10c is 50 to 200 mm.

  G ... Glass plate, 10 ... Interleaving paper, 10a, 10b ... Side edge portion, 10c ... Upper edge portion, 12 ... Glass plate laminate, 14 ... Glass plate packing pallet, 15A, 15B ... Lower lateral pressing member, 16 ... Mounting surface, 17A, 17B ... Upper lateral holding member, 18 ... Base, 20 ... Bottom plate, 22 ... Inclined base, 24 ... Back plate, 26 ... Bottom plate receiving member, 28 ... Receiving member, 30 ... Opening, 32 ... Main body, 34 ... Handle, 36 ... Holding plate 36 ... Screw bar, 40 ... Guide bar, 42 ... Buffer plate, 44 ... Front frame, 46 ... Hook, 48 ... Belt, 50 ... Ratchet type hoisting device, 52 ... Bending jig

Claims (3)

A plurality of plate-like bodies are placed on a pallet having a mounting table on which the bottom of the plate-like body is placed and a back support that supports the back of the plate-like body, and a slip sheet is placed between each plate-like body. In the glass plate laminate in which the interleaving paper is laminated by intervening and protruded by a predetermined amount upward and laterally from the upper side and both side sides in a state of being placed on the pallet of the plate-like body, respectively ,
A glass plate laminate, wherein at least a part of both side edge portions of the interleaving paper protruding sideways from both side portions of the glass plate is bent.   The glass plate laminate according to claim 1, wherein both side edge portions of the slip sheet are bent toward the inclined base.   The glass plate laminate according to claim 1 or 2, wherein a bending angle of both side edge portions of the slip sheet is about 10 ° to 90 ° with respect to a surface of the slip sheet excluding the both side edge portions.

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