JP5510832B2 - Glass plate transport state reproduction device - Google Patents

Description

  The present invention relates to a transport state reproduction device for simulating the occurrence of scratches on a glass plate due to a buffer material used when packaging the glass plate.

  A glass substrate for a flat panel display (FPD) such as a glass substrate for plasma display and a glass substrate for liquid crystal is likely to be defective due to scratches on the surface during storage and / or transportation. In particular, when an electric circuit such as a thin film transistor (TFT) is formed on the surface, such as a non-alkali glass substrate used in a liquid crystal display panel, even if there is a fine scratch on the surface, disconnection or patterning Defects occur. Therefore, such a glass substrate is required to have extremely high surface characteristics.

  Conventionally, in order to prevent scratches during storage or transportation of glass substrates, a method of interposing a so-called interleaving buffer or the like that sandwiches paper between laminated glass substrates and separates adjacent glass substrate surfaces It is adopted from.

In order to reduce scratches caused by interleaving paper, for example, Patent Document 1 discloses interleaving paper for glass mainly composed of a pulp raw material, having a basis weight of 30 to 60 g / m ² , and JIS P8118. The maximum thickness difference between adjacent measurement points is 8 μm or less and the difference between the maximum value and the minimum value is 16 μm or less. A slip sheet for glass is disclosed.

JP 2009-184704 A

  However, in evaluating the scratches caused by the slip sheet, there is only a method of simply measuring the subsequent change by bringing the slip sheet into contact with the glass. As a method for evaluating the scratchability on glass, a method for counting the average number of scratches by observing the state of the glass surface with a magnifying microscope after dividing and washing the glass is disclosed. An evaluation method is not disclosed.

  Therefore, in order to evaluate the occurrence of scratches on the glass surface in the actual storage / conveyance state, a large number of glass substrates packed with interleaving paper and loaded in containers are actually transported by a vehicle such as a truck. I had to do it. However, in the case of such evaluation by truck transportation, there are problems that the result is not reproducible, the evaluation cannot be performed at a desired timing, and it takes time and cost.

  An object of the present invention is to provide a glass plate transport state reproduction device for solving the above-described problems. Specifically, a load similar to a situation during actual transportation is applied to the glass plate and An object of the present invention is to provide a transport state reproduction device for reproducing the occurrence of scratches on a glass plate caused by a buffer material such as a slip sheet accurately and simply by giving it to the buffer material.

In order to achieve the above object, the present invention provides:
It is a device that reproduces the occurrence of scratches on the glass plate due to the cushioning material when transporting the glass plate,
A buffer material supply section for supplying the buffer material continuously or intermittently;
A first glass plate holding unit for holding the glass plate;
A flat portion having a flat surface facing the first glass holding portion with the cushioning material in between,
The glass plate holding part and / or the flat part is moved in the direction approaching the buffer material, and the buffer plate is pressed between the glass plate holding part and the flat part, and the state of transport of the glass plate is reproduced. Providing equipment.

The planar portion is preferably a second glass holding portion that holds glass.
Further, the buffer material supply unit moves the gap between the delivery unit that unwinds and sends out the roll-shaped buffer material, and the buffer material between the first glass plate holding unit and the plane unit horizontally or substantially horizontally. It is preferable to include one or more guide members and a collection unit that collects the buffer material.

  Furthermore, it is preferable that the first glass holding part is located below the buffer material and the second glass holding part is located above the buffer material.

  The first glass holding section includes a plate on which glass is placed and a table on which the plate is placed, and the plate can be floated by a fluid blown out from a hole provided on the upper surface of the table. Is preferred.

  Moreover, it is preferable that the said 1st glass holding | maintenance part and / or the said 2nd glass holding | maintenance part have a porous sheet affixed on the contact part with a glass plate.

  ADVANTAGE OF THE INVENTION According to this invention, the state at the time of conveying with a transport machine, such as a truck, the container which laminated | stacked and mounted the several glass plate through the interleaving paper can be reproduced correctly and easily.

The schematic explanatory drawing of the conveyance state reproduction apparatus of the glass plate concerning one Embodiment of this invention. The schematic explanatory drawing of the conveyance state reproduction apparatus of the glass plate concerning other embodiment of this invention. The schematic explanatory drawing of the conveyance state reproduction apparatus concerning the aspect which comprised the glass plate holding | maintenance part so that pressurization was possible from the downward direction. The schematic model explanatory drawing which expanded the periphery of the glass plate holding | maintenance part in the schematic explanatory drawing of FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, the following description is a representative example of the embodiment of the present invention, and the present invention is not limited thereto. First, based on FIG. 1, the structure of the conveyance state reproduction apparatus 1 (henceforth only a reproduction apparatus) of the glass plate of this invention is demonstrated.

  The reproduction apparatus 1 includes a buffer material supply unit 2, a glass plate holding unit 3, and a plane unit 4. The buffer material supply unit 2 supplies the buffer material 5 continuously or intermittently. As the buffer material 5, paper (interleaf) is widely used, and is interposed between a glass plate and used to prevent scratches from being generated due to contact between the glass plates. . As the paper, glassine paper compressed and smoothed by a calendar machine can be used.

  In addition to the interleaving paper, the buffer material 5 includes an ionomer film, a polyethylene film, a polypropylene film, a polyvinyl chloride film, a polyvinylidene chloride film, a polyvinyl alcohol film, a polypropylene film, a polyester film, a polycarbonate film, and a polystyrene film. Polyacrylonitrile film, ethylene vinyl acetate copolymer film, ethylene-vinyl alcohol copolymer film, ethylene-methacrylic acid copolymer film, polyamide film, polyethylene foam resin sheet, and the like can also be used.

  Examples of the glass plate include glass substrates for flat panel displays (FPD) such as liquid crystal displays (LCD), plasma display panels (PDP), and organic electroluminescence (EL) displays, glass plates for construction, and glass plates for transportation equipment. And a flat glass plate.

  When packaging and transporting a glass plate, the cushioning material 5 is generally a rectangular shape that is roughly similar to the glass plate to be packaged by cutting a roll provided by a paper manufacturer or the like into a desired size. Although used, in the reproduction apparatus of the present invention, it is supplied in the form of a continuous sheet that has been unwound from the state of the roll before cutting.

  The glass plate holding portion 3 holds the glass plate 6 and is disposed in the vicinity of the buffer material 5. In order to hold the glass plate 6, the glass plate holding portion 3 preferably has a form in which a porous sheet or the like is attached to a highly rigid plate such as metal. And the plane part 4 is arrange | positioned in the position which opposes the said 1st glass holding part 3 on both sides of the said buffer material 5. As shown in FIG.

  The glass holding surface of the glass holding part 3, the cushioning material 5, and the plane of the flat part 4 are arranged in parallel. The moving direction of the cushioning material is not particularly limited, but is preferably set so as to move horizontally. Therefore, it is preferable that the glass holding surface of the glass holding part 3 and the plane of the flat part 4 are also horizontal. FIG. 1 shows a mode in which the three members are horizontally arranged.

  Further, it is preferable that one or more guide members 7 are disposed at appropriate positions so that the cushioning material 5 moves along a desired path.

  The above is the configuration of the main part of the reproduction apparatus 1 of the present invention. At least one of the glass plate holding part 3 and the flat part 4 is connected to a driving means (not shown) and is in a direction approaching and separating from the buffer material 5, that is, in a normal direction of the surface of the buffer material 5. It is comprised so that it can reciprocate, and the load near the time of actual transportation can be reproduced by pressing the glass plate 6 against the buffer material 5 with a desired force.

  In the above description, an example of a reproduction device configured to sandwich the buffer material 5 between the first glass plate holding unit 3 and the plane unit 4 has been shown. However, as illustrated in FIG. It is more preferable that the second glass plate holding portion 8 that holds the glass plate 6 is also configured. By setting it as such a structure, since a glass plate can be pressed from both surfaces of the buffer material 5, the load closer at the time of actual transportation can be reproduced.

  Furthermore, it is preferable that the glass plate holding part 3 has a structure that is placed on a table 9 and that can supply and pressurize a fluid from a hole 10 provided on the upper surface of the table 9. With such a structure, the glass plate holding part 3 is pressurized by the fluid supplied from the hole 10. A plurality of the holes 10 are provided and can be arranged in a lattice pattern or in a radial pattern. Then, a fluid is supplied from a pump (not shown) connected to the hole 10. At this time, by appropriately controlling the flow rate and flow velocity distribution of the fluid, the glass plate 6 can be uniformly pressed against the buffer material 5 and the uneven distribution of the applied pressure can be eliminated.

  The fluid is preferably a gas. This is because, when a liquid is used as the fluid, the buffer material 5 may be in a wet state, thereby causing damage or embrittlement. The gas is not particularly limited, and usually air is used.

  According to the apparatus of the present invention, by giving a load similar to the actual transportation situation to the glass plate and the slip sheet, it is possible to easily and accurately generate the scratches on the glass plate due to the cushioning material such as the slip sheet. Can be reproduced. In particular, by adopting a structure in which the glass plate is pressed against the buffer material by pressurization using a fluid such as air, uniform pressurization is possible, so that more accurate reproduction is possible.

1: Conveyance state reproduction device 2: Buffer material supply unit 3: (First) glass plate holding unit 4: Plane portion 5: Buffer material 6: Glass plate 7: Guide member 8: Second glass plate holding unit 9: Table 10: Hole

Claims (7)

It is a device that reproduces the occurrence of scratches on the glass plate due to the cushioning material when transporting the glass plate,
A buffer material supply section for supplying the buffer material continuously or intermittently;
A first glass plate holding unit for holding the glass plate;
A flat portion having a flat surface facing the first glass holding portion with the cushioning material in between,
The glass plate holding part and / or the flat part is moved in the direction approaching the buffer material, and the buffer plate is pressed between the glass plate holding part and the flat part, and the state of transport of the glass plate is reproduced. apparatus.   The said flat part is a 2nd glass holding part holding glass, The conveyance state reproduction apparatus of the glass plate of Claim 1. The cushioning material supply unit
A delivery section that unwinds and delivers the roll-shaped cushioning material;
One or more guide members that move the gap between the first glass plate holding portion and the flat portion horizontally or substantially horizontally with the buffer material;
A collection unit for collecting the buffer material;
The conveyance state reproduction apparatus of the glass plate of Claim 1 or 2 provided with these.   The said 1st glass holding | maintenance part is located below a buffer material, The said 2nd glass holding part is a conveyance state reproduction apparatus of the glass plate of Claim 2 or 3 located above a buffer material.   The first glass holding unit includes a plate on which glass is placed and a table on which the plate is placed, and the plate can be floated by a fluid blown out from a hole provided on the upper surface of the table. The conveyance state reproduction apparatus of the glass plate of any one of claim | item 1-4.   The said 1st glass holding | maintenance part is a conveyance state reproduction apparatus of the glass plate of any one of Claims 1-5 by which the porous sheet is affixed on the contact part with a glass plate.   The said 2nd glass holding | maintenance part is a conveyance state reproduction apparatus of the glass plate of any one of Claims 2-6 by which the porous sheet is affixed on the contact part with a glass plate.

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