KR101849817B1 - Glass plate stack, and method of extracting glass plate - Google Patents

Abstract

The present invention relates to a glass sheet laminate comprising at least two glass sheets substantially horizontally stacked in a vertical direction with a sheet interposed therebetween and arranged so that the sheet is discharged from at least a part of the edge of the glass sheet, And the sheet has a Gurley Strength of 1.0 mN or less.

Description

TECHNICAL FIELD [0001] The present invention relates to a glass plate laminate and a method of taking out the glass plate.

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

In the case of using as a glass plate in which an electric circuit or the like is embedded in the surface thereof, such as a non-alkali glass plate used for a liquid crystal display in particular, defects such as disconnection and patterning occur even if there is some scratch or contamination on its surface. Therefore, such a glass plate requires very high surface properties.

Therefore, as a method of preventing scratches and contamination during storage of the glass plate or during transportation, a method of separating the adjacent glass plate surfaces by sandwiching a sheet of paper or the like between the glass plates to be laminated has been conventionally employed. The form in which a sheet is sandwiched between glass plates is referred to as a glass plate laminate.

Patent Document 1 discloses a configuration in which a glass sheet laminate is erectly piled up on a wrapping pallet and piled up vertically. Patent Document 2 discloses a configuration in which a glass sheet laminate is horizontally piled up in a horizontal direction.

A glass plate having a sheet interposed thereon is conveyed from a glass manufacturing plant to a glass plate use factory for processing and assembling a glass plate in a state of being laminated on a packing pallet and taken out one by one by a takeout device from a packing pallet in a glass plate use factory. At this time, the glass sheet is sucked and taken out by the glass suction part of the take-out device, and then the sheet is taken out by the sheet suction part repeatedly.

Particularly, in the glass sheet laminate 2 wrapped with the horizontal stacking on the receiving tray 1A of the wrapping pallet 1 of Patent Document 2 shown in Fig. 11, the glass sheet laminate 2 is provided on both sides of the opposed opposite sides A part of the sheet 3A out of the sheet 3 out of the edge of the glass sheet G is pressed against the end surface of the glass sheet G by moving the sheet pressing jig 4 in the direction of the arrow, And the glass plate G is taken out by a glass absorption unit (not shown). That is, only the glass sheet G is taken out from the sheet 3 electrostatically attracted to the glass sheet G. The static electricity is discharged from the sheet 3 by using a static eliminator (not shown), and air is sprayed between the sheet 3 and the glass plate G below the sheet 3, And the glass sheet G are peeled off and then only the sheet 3 is taken out of the glass sheet G by the sheet suction portion (not shown).

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

However, when the sheet 3 is stiff (high gluing strength described later), at the time of conveyance of the packing pallet 1, a part of the sheet 3A emerging from the rim of the glass plate G is bent downward When the sheet pressing member (not shown) being held is removed from the wrapping pallet 1, there is a characteristic that the sheet 3A is returned to its original shape (shape before bending) with the lapse of time. In this state, when the sheet pressing jig 4 shown in Fig. 11 is moved toward the end face of the glass plate G, as shown in Fig. 12, the sheet 3A of the sheet 3 positioned at the highest position, There is a problem in that the uppermost sheet 3 can not be pressed against the end face of the uppermost sheet G and the uppermost sheet 3 is taken out together with the uppermost glass sheet G.

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and it is an object of the present invention to provide a glass plate laminate and a glass plate taking out method capable of satisfactorily taking out only a glass plate.

In order to achieve the above object, the present invention provides a glass sheet laminate comprising at least two glass sheets substantially horizontally stacked in a vertical direction with a sheet interposed between the glass sheets, And the sheet has a Gurley strength of 1.0 mN or less.

JAPAN TAPPI The problem described above arises when the ghuling strength (hereinafter referred to as gelling strength) of a sheet conforming to No40 of the 2000 paper pulp test method is high, that is, when the sheet is stiff.

In order to prevent such a problem, the inventor of the present invention confirmed by experiments that the Gurley strength of the sheet can be set to 1.0 mN or less. Therefore, according to the glass sheet laminate of the present invention, the sheet emerging from the rim of the glass sheet is downwardly pulled down due to its ductility and is surely pressed against the end surface of the glass sheet by the sheet pressing jig. Can be taken out well.

According to the present invention, it is preferable that the length from the rim of the glass plate to the rim of the sheet emerging from the rim of the glass plate is 15 mm or more.

According to the present invention, by making the length of the hollow portion 15 mm or more, the part of the sheet is satisfactorily stretched due to the weight of the part of the hollowed-out sheet.

In the glass sheet laminate according to the present invention, a laminate having stripes is used as a sheet, and in the glass sheet taking-out apparatus, the direction in which the lamination pushing jig of the glass sheet taking- out device advances toward the end face of the glass sheet, Positioning the glass sheet laminate so that the direction of the glass sheet laminate is perpendicular to the direction of the glass plate laminate and pressing the laminate out of the edge of the glass sheet of the glass sheet laminate to the end face of the glass sheet by the joint pressing jig, In which the glass plate at the uppermost position of the glass plate is taken out by the glass suction unit of the glass plate taking-out apparatus.

According to the method for taking out a glass sheet of the present invention, when a laminated sheet having stripes is used as a sheet, in the glass sheet taking-out apparatus, the glass plate is moved so that the direction of the strip- The laminate is positioned. Subsequently, the laminated paper out of the glass plate of the laminated glass sheet is pressed against the end face of the glass plate by a joint pressing jig. Thereafter, the uppermost glass plate of the glass plate laminate is taken out by the glass absorption unit. As a result, only the glass plate can be taken out more smoothly.

According to the glass sheet laminate and the glass sheet taking-out method according to the present invention, since the sheet has a gluing strength of 1.0 mN or less, the sheet emerging from the rim of the glass sheet is stretched and reliably pressed by the sheet pressing jig, Only the glass plate can be well taken out from the laminate. When a laminate having stripes is used as a sheet, only the glass sheet can be taken out more smoothly by taking out the glass sheet so that the stripes of the laminate are orthogonal to the direction in which the lamination pressing jig advances toward the end surface of the glass sheet.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is an external view of a wrapping pallet in which a laminated glass sheet according to an embodiment is packed.
2 is a schematic view for explaining a taking-out procedure of a glass sheet and a laminated sheet of a glass sheet laminate packed in a packing pallet.
Fig. 3 is a schematic view for explaining a taking-out procedure of a glass sheet and a laminated sheet of a glass sheet laminate packed in a packing pallet.
Fig. 4 is a schematic view for explaining a taking-out procedure of a glass sheet and a laminated sheet of a glass sheet laminate packed in a wrapping pallet.
Fig. 5 is a schematic view for explaining a taking-out procedure of a glass sheet and a laminated sheet of a glass sheet laminate packed in a wrapping pallet.
Fig. 6 is a schematic view for explaining a taking-out procedure of a glass sheet and a laminated sheet of a glass sheet laminate packed in a wrapping pallet.
Fig. 7 is a schematic view for explaining a taking-out procedure of a glass sheet and a laminated sheet of a glass sheet laminate packed in a wrapping pallet.
Fig. 8 is a schematic view for explaining a taking-out procedure of a glass sheet and a laminated sheet of a glass sheet laminate packed in a packing pallet.
Fig. 9 is an explanatory diagram showing a form of a glass plate taking-out apparatus for advancing a joint pressing jig in a direction orthogonal to the direction of stripes.
Fig. 10 is an explanatory diagram showing a form of a glass plate taking-out apparatus for advancing a joint pressing jig in parallel to the direction of a stripe.
11 is a schematic diagram showing the structure of a conventional glass plate laminate.
Fig. 12 is a schematic view for explaining a problem when the glass sheet is taken out from the glass sheet laminate shown in Fig. 11;

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, preferred embodiments of a glass sheet laminate and a glass sheet taking-out method according to the present invention will be described in detail with reference to the accompanying drawings. In the present specification, the term " upward " means vertically upward, and " downward " means vertically downward.

In the following embodiments, the laminate 14 is exemplified as a sheet.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is an external view of a wrapping pallet 12 in which a laminated glass sheet 10 according to an embodiment is packed horizontally. 2 to 8 are schematic views for explaining the taking out procedure of the glass plate G and the laminated paper 14 of the glass plate laminate 10 packed in the packing pallet 12 in a time-wise manner.

(See FIG. 2) of a plurality of (for example, 80 to 150) rectangular glass plates G (see FIG. 2) are arranged substantially horizontally, and glass plates G are arranged between the glass plates, Are stacked and housed with a larger area than the rectangular laminates 14, 14 .... The glass plate G is a large-sized glass plate used for an FPD, for example, a plate thickness of 0.2 mm to 2.8 mm, and a longitudinal and lateral size of about 2400 mm x 2100 mm to 3200 mm x 3000 mm.

The lumber 14 has a roughened surface of, for example, a flatness of 18 seconds or less (JIS P 8119, 1976) and has a reduced contact area with the surface of the glass plate G, (G), and a lipid that does not cause paper texture, burning, or contamination on the surface of the glass plate (G) is selected and used. In addition, the resin content of the lumber 14 is 0.05 mass% or less (JIS P 8205, 1976), and a lipid which does not adversely affect the quality of the glass plate G itself is selected by the combined effect with the above- .

The wrapping pallet 12 has a rectangular base 16, a redistribution plate 18 and a base plate 19 as viewed in a plan view and a plurality of joint pressing members 20, 20 ... 20 arranged on the periphery of the base plate 19. ). Further, since the guide members 22, 22 ... which are pallet lamination members are provided at the four corners of the redistriver 18, it is advantageous when the pallet 12 is stacked vertically and transported.

The pedestal 16 is formed in a frame shape by a plurality of steel members. The material of the pedestal 16 may have any desired rigidity, and any material that does not generate particles may be used, but aluminum or an aluminum alloy is preferable in terms of weight, rigidity, and cost. Two openings 24 for forklifts, in which a fork of a forklift (not shown) is inserted, are formed on one side of the pedestal 16 on all sides of the pedestal 16. Thereby, the fork of the forklift can be inserted from any one of the longitudinal and transverse sides of the support pallet (12) with respect to the pallet (12), and a highly efficient transportation operation becomes possible.

The mounting plate 18 is mounted on the pedestal 16 via a vibration absorbing member and a tilt angle setting member (not shown), and the pedestal plate 19 is fixed to the mounting plate 18. [

The joint pressing members 20 are disposed on the side surfaces of four sides of the base plate 19 at predetermined intervals, for example, two at a predetermined distance, and are detachably fixed to the base plate 19 by screws 26, 26 . The glass plate G is pressed from the end face by the joint pressing member 20 so that the support plate 19 is pressed against the end face of the support plate 19 by the screw 26, The end face of the glass plate G is fitted and held by the joint pressing members 20, 20. 2) pressed out from the rim of the glass plate G is pressed by the joint pressing member 20 and the joint 14 is pressed against the joint pressing members 20, And is fixed to the receiving tray 19 by the above- Thus, the stacked glass plates G, G, ... are fixed to the receiving tray 19 via the laminated paper 14.

In the present embodiment, two joint pressing members 20 and 20 are disposed on each side surface of the receiving tray 19. However, the present invention is not limited to this, Only one piece corresponding to the length may be formed, or three or more short joint pressing members may be provided along each side.

The joint pressing member 20 presses the end portion 14A of the glass plate G out of the edge of the glass plate G and downward to the end face of the glass plate G (the side surface of the glass plate laminate 10). At this time, since the overlapping portion of the end portion of the lumber 14A is pressed by the lumber pressing member 20, the lumber pressing member 20 does not directly contact the end face of the glass plate G, It is possible to securely pressurize the glass plate laminate 10 from four side surfaces while protecting the glass plate G by flexibility. Even if the glass plate G tries to move up and down by vibration during transportation of the wrapping pallet 12 wrapped with the glass plate laminate 10, the laminated paper 14A is pressed against the joint pressing member 20 and the glass plate G So that the glass sheet G can be prevented from moving up and down. As shown in Fig. It is also possible to prevent the positional deviation of the glass plate G in the horizontal direction. Therefore, it is preferable that the topmost portion of the glass sheet laminate 10 is the laminate 14.

The laminate 14 of the embodiment has a Gurley strength of 1.0 mN or less, preferably 0.5 mN or less. When the gluing strength of the lumber 14 is more than 1.0 mN, that is, when the lumber 14 is stiff, the lumber 14A emerging from the rim of the glass plate G is formed into the original shape with the lapse of time It is not possible to press the end surface of the glass plate G by the joint pressing jig 30 (see Fig. 2, etc.) without pulling it, and the laminated paper 14 is taken out together with the glass plate G have. In order to prevent the trouble of handling of the glass plate G, the inventor of the present invention confirmed by experiment that the gluing strength of the laminated paper 14 is 1.0 mN or less.

The taking out procedure of the glass plate G and the laminated paper 14 of the laminated glass sheet 10 packed in the packing pallet 12 will be described below with reference to the schematic diagrams shown in Figs.

2 is a view showing a glass plate laminate 10 obtained by removing the joint pressing member 20, the guide member 22 and the uppermost joint 14 from the wrapping pallet 12 shown in Fig. 1 by a worker or a joint- Fig.

As shown in Fig. 2, the laminated paper 14A which is discharged from the edge of the glass plate G is stretched along the end face of the glass plate G because the gluing strength is 1.0 mN or less. In this state, when the joint pressing jigs 30, 30 provided on both opposite sides of the glass sheet laminate 10 are moved toward the end face of the glass plate G by a driving unit such as a cylinder device, All the joints 14A, 14A ... are pressed against the end face of the glass plate G by the joint press jigs 30,

In this state, as shown in Fig. 4, the uppermost glass sheet G is adsorbed by the plurality of adsorption pads 34, 34 ... of the glass adsorption section 32 constituting the glass sheet take-out apparatus. Air is jetted from the nozzle 36 to the gap between the adsorbed glass plate G and the laminated paper 14 below the adsorbed glass plate G and the air is discharged from the nozzle 36 by the discharge device 38 The glass adsorption section 32 is raised at a low speed while the elimination treatment is performed. 4 is pressed against the end face of the glass plate G along the end face of the glass plate G by the lamination pressing jig 30 so that the uppermost (first) glass plate (first) G) is taken out from the glass plate laminate 10.

Subsequently, when the first glass plate G is taken out, the joint pressing jigs 30, 30 are retracted laterally from the end face of the glass plate G as shown in Fig.

Subsequently, as shown in Fig. 6, the lint absorbing portion 40 constituting the glass plate taking-out device is moved upward to the uppermost joint 14 and moved downward toward the lint 14, The lumber 14 is adsorbed by the adsorption pads 42, 42 of the adsorption section 40.

7, air is jetted from the nozzle 36 to the gap between the adsorbed lumps 14 and the glass plate G below the adsorbed lumps 14, and the air is jetted to the static eliminator 38 The static elimination process is carried out, and the laminated paper 14 is raised at a low speed. Thereby, only the laminated paper 14 can be taken out from the glass sheet laminate 10. 8 is a side view of the laminate 14 taken out of the glass plate laminate 10. Subsequently, in the case of taking out the second and subsequent glass sheets G and the second and subsequent laminated sheets 14, the procedure shown in Figs. 2 to 7 is repeated.

9 and 10, a plurality of stripes 14B, 14B, ... are formed in parallel on the surface of the laminate 14 in the manufacturing process, and the direction of the stripes 14B, 14B ... The gluing strength of the laminate 14 is different.

That is, as shown in Fig. 9, when the lapping paper 14 is pressed by advancing the lapping press jig 30 in a direction orthogonal to the direction of the stripes 14B, 14B ..., the elongation strength (for example, 0.24 mN (For example, 0.5 mN) when the laminated paper 14 is pressed by advancing the laminated paper pressing jig 30 in parallel with the direction of the stripes 14B, 14B ... as shown in Fig. 10, , The electron gelling strength is low. That is, as compared with the latter, there is a tendency that the former side 14A (refer to FIG. 2 and the like) which is projected from the edge of the glass plate G tends to be elongated, and is not easily returned to its original shape.

The method of taking out the glass plate G according to the embodiment is based on the characteristics of such a laminated paper 14. The laminated paper pressing jig 30 is advanced in the direction orthogonal to the direction of the stripes 14B, 14B ... as shown in Fig. 9 so that the laminated paper 14 is pressed so that the laminated paper 14 10) is positioned in the glass plate taking-out apparatus. When the glass sheet laminate 10 is positioned as described above, the laminated paper 14 discharged from the edge of the glass sheet of the glass sheet laminate 10 is pressed against the end face of the glass sheet G by the joint pressing jig 30 . Thereafter, the uppermost glass plate G of the glass plate laminate 10 is taken out by the glass absorption unit 32 as shown in Fig. As a result, in the method of taking out the glass plate G of the embodiment, only the glass plate G can be taken out smoothly.

In the embodiment, the laminate 14 is exemplified as a sheet. However, the laminate 14 is not limited to the laminate 14, and examples thereof include a resin film, a resin sheet and a foamed resin sheet. Alternatively, a sheet formed by laminating at least two sheets of these sheets may be used. The glass plate includes a glass plate on which a film is preliminarily adhered. In order to further suppress the upward and downward movement of the glass sheet G during transportation while preventing the sheet from becoming dirty or damaged by the influence of the outside of the packing pallet 12 from the outside, the protective sheet, which is stronger than the sheet, It is preferable that the protective sheet is put on the laminate 10 and the protective sheet is fixed to the backing plate 19 by the joint pressing member 20. For example, when the sheet is a laminate, the protective sheet is preferably a resin sheet that is more durable than the laminate.

Though the thickness of the sheet is not limited, in the case of a sheet size corresponding to a sixth-generation FPD glass plate (for example, 1500 mm x 1800 mm), the thickness is preferably 0.01 mm to 0.2 mm.

The length of the projected blank 14A from the rim of the glass plate G to the rim of the laminating paper 14A that has been vacated from the rim of the glass plate G is 15 mm or more Is particularly suitable. That is, when the length of the blank 14A is 15 mm or more, the lumber 14A is satisfactorily stretched due to the weight of the lumber 14A.

When the laminate 14 is used as the sheet, the raw material of the laminate may be paper stock, virgin pulp, or a mixture thereof. A raw material containing cellulose or the like may also be used.

In an embodiment, it is preferred that the laminate 14 does not include foreign matter greater than 200 占 퐉. When the size of the foreign object is 200 mu m or less, there is no risk of scratching the glass plate G during storage and transportation of the glass plate G. [ The size of the foreign object depends on the material of the glass plate G and the thickness of the laminated paper 14 because the size of the foreign object to be a threshold value differs depending on the thickness of the laminated paper 14 and the material of the glass plate G. Therefore, I need to decide every time.

In this embodiment, the laminated paper 14 has a size of 1550 x 1850 mm and a thickness of 0.06 to 0.1 mm. A glass plate for FPD (trade name AN100, manufactured by Asahi Glass Co., Ltd.) was used as the glass plate G. The size of the laminate 14 need not be larger than the area of the surface (main surface) of the glass plate G. [ That is, even if the area of the laminated paper 14 is smaller than the area of the main surface of the glass plate G, a part 14A of the laminated paper 14 may be ejected from the rim of the glass plate G. However, it is preferable that a part of the laminated paper 14 is projected from the entire edge of the glass sheet G.

The position at which the laminated paper 14 is pressed against the end face of the glass plate G by the laminated pressing jig 30 is preferably a position pressed by the laminated pressing member 20 shown in Fig. This position is a position that has a strong tendency to bend by the joint pressing member 20 than other positions, so that the pressing by the joint pressing jig 30 is performed well.

While the invention has been described in detail and with reference to specific embodiments thereof, it is evident to those skilled in the art that various modifications and changes may be made thereto without departing from the scope and spirit of the invention.

This application is based on Japanese Patent Application No. 2011-040508 filed on February 25, 2011, the contents of which are incorporated herein by reference.

10 ... Glass plate laminate
12 ... Packing pallet
14 ... Lyo
14A ... Empty lobe
16 ... Pedestal
18 ... An enemy trial
19 ... saucer
20 ... Joint press member
22 ... The guide member
24 ... Opening for forklift
26 ... screw
30 ... Jig Pressing Jig
32 ... The glass-
34 ... Absorption pad
36 ... Nozzle
38 ... Static eliminator
40 ... The lint adsorption part
42 ... Absorption pad

Claims (3)

A glass sheet laminate comprising at least two glass sheets stacked horizontally and vertically with a sheet interposed therebetween, wherein the glass sheets are laminated so that the sheet is discharged from at least a part of the edge of the glass sheet,
Wherein the sheet has a Gurley strength of 1.0 mN or less,
Wherein the sheet is a laminate having stripes,
Wherein a direction of a stripe of the laminated paper which is projected out from at least a part of the rim of the glass plate and which is pulled downward is orthogonal to a direction of progressing toward the end face of the glass plate of the laminated paper pressing jig of the glass plate taking- A glass sheet laminate comprising at least two glass sheets stacked horizontally and vertically with a sheet interposed therebetween, wherein the glass sheets are laminated so that the sheet is discharged from at least a part of the edge of the glass sheet,
Wherein the sheet has a Gurley strength of 1.0 mN or less and a part of the sheet which is pushed out from the rim of the glass sheet and which is pulled downward is pressed against the end face of the glass sheet by a pressing member,
Wherein a sheet having stripes is used as the sheet and the glass plate laminate body is stacked such that the direction in which the direction of the stripe of the laminate is orthogonal to the direction in which the direction of the jig pushing jig of the glass sheet taking- And after pressing the laminated paper that has been pushed out from the rim of the glass plate of the laminated glass plate and pressed by the pressing member against the end face of the glass plate by the laminated press jig, And the uppermost glass sheet is taken out by the glass suction part of the glass sheet taking-out device. The take-out method of a glass sheet according to claim 2, wherein the length from the rim of the glass sheet to the rim of the sheet emerging from the rim of the glass sheet is 15 mm or more.

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