JP2013100116A - Layered plate-like body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide layered plate-like bodies in which plate-like bodies such as glass plates are layered and conveyed without being damaged.SOLUTION: In layered glass plate-like bodies 12, interleaving sheets 10 are placed between glass plates G without protruding lower parts 11 of the interleaving sheets 10 from the lower sides G1 of the glass plates G. Accordingly, the layered glass plate-like bodies 12 layer and convey the glass plates G without damaging the glass plates.

Description

  The present invention relates to a plate-like laminate, and more particularly to a plate-like laminate in which a plurality of plate-like bodies such as glass plates are laminated via sheets such as slip sheets.

  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 the glass plate G is placed on the interleaving paper 2 having the folding portion 2a as shown in FIG. 5A, the lower side portion of the glass plate G is slightly placed on the fold line of the folding portion 2a of the interleaving paper 2. Overlay to cover. As a result, the angle between the folded surface of the interleaving paper 2 and the surface of the interleaving paper 2 that overlaps the glass plate G spreads to 90 degrees or more and becomes an obtuse angle, so as shown in FIG. The portion 2 a bent when the transfer is performed is pressed against the floor rail 6 b side of the pallet 6. Therefore, when the next glass plate G is transferred, it is possible to prevent the lower edge portion of the interleaving paper 2 from being caught in the next glass plate G.

JP 2001-139138 A

  However, the glass plate laminate of Patent Document 1 has a problem that the vicinity of the lower side of the glass plate may be damaged during the lamination of the glass plate and during the conveyance.

  This invention is made | formed in view of such a situation, and it aims at providing the plate-shaped body laminated body which can be laminated | stacked without damaging plate-shaped bodies, such as a glass plate, and can be conveyed. And

  In the present invention, in order to achieve the above object, a plurality of plate-like bodies are stacked via sheets, and a lower side portion of the plate-like body is placed on a bottom plate of a pallet that houses the plurality of plate-like bodies. In the plate-like laminate, the sheet is interposed between the plate-like bodies without protruding from the lower side portion of the plate-like body.

  The inventor confirmed the cause of damage during the glass plate lamination using the glass plate laminate of Patent Document 1 and during the experiment, and as a result of earnestly examining the measures for improving the damage, the following knowledge was obtained.

  That is, as in Patent Document 1, if the lower edge portion of the slip sheet is protruded from the lower edge portion of the glass plate, the lower edge portion of the projected slip sheet may interfere with the stacking, and the glass plate is placed in the pallet. It was difficult to load. In this state, when the next glass plate is laminated so as to be pressed against the already laminated glass plate, the pressing force is applied to the laminated glass plate, and this force causes the glass plate to be bent near the lower side of the glass plate. Since a moment was generated, it was experimentally determined that the vicinity of the lower side of the glass plate was damaged by this bending moment. In addition, since it is difficult to load the glass plate on the pallet without any gaps, the vicinity of the lower side of the glass plate vibrates greatly due to the vibration during the pallet transport, and this vibration breaks the vicinity of the lower side of the glass plate. This was determined through experiments.

  Therefore, in order to solve the problem of Patent Document 1, the present invention provides a plate-like body laminate in which a sheet is interposed between the plate-like body without protruding from the lower side of the plate-like body. To do. Thereby, according to the plate-shaped body laminated body of this invention, while being able to laminate | stack without damaging a plate-shaped body, it can convey.

  In this invention, it is preferable that the plate | board thickness of the said plate-shaped object is 0.2-0.7 mm.

  Moreover, in this invention, it is preferable that the size of the said plate-shaped object is 1950 mm x 2250 mm or less.

  According to the plate-like body laminate of the present invention, since the sheet is interposed between the plate-like body and the plate-like body without protruding from the lower side portion of the plate-like body, the plate-like body is laminated without damaging it. And can be transported.

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 Enlarged explanatory diagram showing the laminated relationship between the glass plate and the slip sheet Explanatory drawing which showed the lamination | stacking state of the conventional glass plate and a slip sheet

  Hereinafter, preferred embodiments of a plate-like 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. In the embodiment, the slip sheet 10 is exemplified as the sheet, but the present invention is not limited to this. For example, a resin film, a resin sheet, and a foamed resin sheet can also be applied as a sheet.

  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 sheet G and the interleaf sheet 10 are taken out, the upper side pressing members 17A and 17B shown in FIG. 2 are removed from the pallet 14, and part of the lower side pressing members 15A and 15B are removed from the pallet 14. This part will be described later.

  As shown in FIG. 2, the pallet 14 includes a pedestal 18 having a flat mounting surface 16 formed on the upper surface. Further, the pallet 14 is provided with a flat bottom plate 20 provided to be inclined with respect to the mounting surface 16 at an angle (θ1) of about 18 ° and on which the bottom side portion of the glass plate is placed. 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 ° (θ2). A flat resin back plate 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 pallet 14 also supports the bottom plate receiving member 26 that supports the bottom plate 20 on the mounting surface 16 at an angle (θ1) of about 18 °, and the rear surface of the inclined base 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. The elongated upper edge portion 10c of the interleaving paper 10 projecting from the upper side portion of the glass plate G is adsorbed and held by an unillustrated suction pad of an unpacker, and the interleaving paper 10 is pallet 14. Taken from. The amount of protrusion of the slip sheet 10 from the upper side of the glass plate G is preferably 50 mm or more and 200 mm or less. When the protruding amount of the upper edge portion of the slip sheet 10 is 50 mm or less, the gripping area by the slip sheet gripping portion is too small, and the protruding amount is preferably 50 mm or more. Further, if the protruding amount exceeds 200 mm, the upper edge portion may hang down due to the weight of the protruding upper edge portion, and therefore the protruding amount is preferably 200 mm or less.

  Further, when the glass plates G are vertically stacked like the pallet 14, when the slip sheet 10 protrudes from the lower side of the glass plate G, a large number of glass plates G, G. Otherwise, the vicinity of the lower side of the glass plate G may be damaged during packaging or transport. Therefore, the slip sheet 10 does not protrude from the lower side portion of the glass plate G, and protrudes only from the upper side portion and the left and right side portions of the glass plate G. This will be described later.

  The raw material of the interleaf 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 becomes rigid so that it does not hang down, so that the interleaf paper 10 can be satisfactorily taken out from the pallet 14. The protruding amount of the interleaf paper 10 protruding laterally from both side portions of the glass plate G is preferably 15 mm to 35 mm, and more preferably 20 mm to 30 mm.

  The lower lateral pressing members 15A and 15B are composed of a main body 32 formed in a plate shape, and a pressing unit 37 provided with a handle 34, a pressing plate 36, and the like. The holding unit 37 is configured to be detachable from the main body 32. That is, a part of the lower lateral pressing members 15 </ b> A and 15 </ b> B removed from the pallet 14 when the glass sheet G and the interleaf sheet 10 are taken out is the pressing unit 37.

  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 pressing unit 37 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 pressing unit 37 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. . And it is preferable that the both side edge parts 10a and 10b of the interleaving paper 10 projected from the both sides of the glass plate G are bent toward the inclined base 22 by the respective pressing plates 36 and 36. As a result, the upper edge portion of the slip sheet protruding from the upper side portion of the glass plate generates a drag force in the sagging direction. Due to this drag, the upper edge portion of the interleaving paper becomes difficult to sag because of its increased rigidity. Thus, according to the present invention, the upper edge portion of the slip sheet can be more reliably gripped by the slip sheet gripping portion, and therefore the slip sheet can be satisfactorily taken out from the pallet.

  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. The lower end portion of the front frame 44 is engaged with the pedestal 18, is tilted about the lower end portion as a fulcrum, and is in contact with the surface of the buffer plate 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.

  By the way, the inventor confirmed the problem of the glass plate laminate of Patent Document 1, that is, the cause of damage in the vicinity of the lower side of the glass plate due to the lamination of the glass plate and the conveyance of the pallet, and the damage As a result of earnest examination of improvement measures, the following knowledge was obtained.

  The glass plate laminate of Patent Document 1 is characterized in that the lower edge portion of the slip sheet is projected from the lower side portion of the glass plate. In such a glass plate laminate, the protruding lower edge portion of the interleaving paper becomes an obstacle during lamination, and it is difficult to load the glass plate on the pallet without any gaps. When the next glass plate is laminated so that it is pressed against the laminated glass plate with a gap, the pressing force is applied to the laminated glass plate, and this force causes the glass plate to be bent near the lower side of the glass plate. A moment is generated. It was experimentally determined that the vicinity of the lower side of the glass plate was damaged by this bending moment. In addition, since there is the gap, the vicinity of the lower side of the glass plate vibrates greatly due to vibration during conveyance of the pallet. It was ascertained by experiment that the vicinity of the lower side of the glass plate was damaged by this vibration. In particular, when the thickness of the glass plate G is 0.2 to 0.5 mm, it has been found that damage near the lower side portion of the glass plate G due to vibration is significant.

  Therefore, as an improvement measure of Patent Document 1, the glass plate laminate 12 according to the embodiment is configured so that the lower side portion 11 of the interleaf paper 10 does not protrude from the lower side portion G1 of the glass plate G. An interleaf paper 10 was interposed therebetween. Thereby, according to the glass plate laminated body 12 of embodiment, while being able to laminate | stack without damaging the glass plate G, it can convey.

  In addition, it is preferable to interpose the lower side portion 11 of the interleaf paper 10 with the lower side portion G1 of the glass plate G, but this is very difficult due to mechanical errors of the interleaf paper supply device. . For this reason, when supplying the slip sheet 10 to the glass sheet G, the lower side portion 11 of the slip sheet 10 is in relation to the lower side portion G1 of the glass sheet G in view of mechanical errors of the slip sheet supply device. The supply position is preferably set so as to be positioned inside the glass plate G by a (for example, a = 0 to 10 mm) dimension, and more preferably set to be a = 2 to 10 mm. If it is 0-10 mm, the quality of the glass plate G will not be affected.

  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 suitable when the thickness of the slip sheet is 0.06 mm to 0.2 mm. Moreover, the thickness of the slip sheet is 0.06 mm to 0.2 mm below the slip sheet size corresponding to the size of the 7.5th generation FPD glass substrate (1950 mm × 2250 mm, thickness 0.2 to 0.7 mm). It is suitable for the case. Moreover, when the thickness of the glass substrate is 0.2 to 0.5 mm, breakage in the vicinity of the lower side portion of the glass plate due to vibration can be prevented, which is particularly preferable. In this size, the width dimension of both side edge portions 10a and 10b of the slip sheet 10 projecting from both side portions of the glass substrate is 50 to 100 mm, and the top edge portion 10c of the slip sheet 10 projecting from the top side portion of the glass substrate. The width dimension (height dimension) is 50 to 200 mm.

  Moreover, although the glass plate was illustrated as a plate-shaped body in embodiment, it is not limited to this, A plastic plate-shaped body may be sufficient.

  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)

In the plate-like laminate in which a plurality of plate-like bodies are laminated via sheets and the lower side of the plate-like body is placed and laminated on the bottom plate of the pallet that houses the plurality of plate-like bodies,
The said sheet | seat is interposed between each plate-shaped body, without protruding from the lower side part of the said plate-shaped body, The plate-shaped body laminated body characterized by the above-mentioned.   The plate-like laminate according to claim 1, wherein the plate-like body has a thickness of 0.2 to 0.7 mm.   The plate-like laminate according to claim 1 or 2, wherein the size of the plate-like body is 1950 mm x 2250 mm or less.

Images