KR20230146531A - Glass plate package, and method of opening the glass plate package - Google Patents

Abstract

A glass plate laminate (3) formed by stacking a plurality of glass plates (G) and a plurality of packaging cushioning sheets (S) alternately in a vertical position, and a bottom surface portion of the glass plate laminate (3) A bottom plate 21 supporting the glass plate laminated body 3, a back plate 22 supporting the back portion of the glass plate laminate 3, and the bottom plate 21 and the back plate 22. A glass plate package having a pallet (2) having a base portion (24) for fixing and a buffer plate (23) disposed between the glass plate laminate (3) and the back plate (22). , package) (1), characterized in that in the direction along the longitudinal side of the glass plate (G), the upper end of the back plate 22 is lower than the upper end of the buffer plate 23. do. As a result, the height and width of the glass plate package 1 packaging the large glass plate G is suppressed, the gap between the glass plate package 1 and the inner wall of the container 4 is widened, and the glass plate package 1 is placed in the container. (4) Workability can be improved when carrying in and out of the interior.

Description

Glass plate package, and method of opening the glass plate package

[0001] The present invention relates to improvements in glass plate packages to improve work efficiency when carrying in and out of containers.

[0002] Glass plates used for glass substrates for displays, etc. are laminated on a pallet at the time of shipment, and a pressing plate is placed on the frontmost part of the laminated glass plate, and these are connected to a binding belt. By binding, it is packed into pallets. Typical forms of stacking glass plates on a pallet include a horizontal laying form in which the glass plates are stacked flat on a pallet placed on a horizontal floor, or a vertical laying form in which they are stacked so as to lean against a roughly vertical or inclined pallet. From the viewpoint of ease of placing/carrying out the glass plate and efficiency of the pallet installation area, the vertical arrangement is advantageous (see Patent Document 1).

[0003] 1. Japanese Patent Publication No. 2009-57051

[0004] When transporting a glass plate package, it is customary to accommodate it in a general container manufactured based on international unified standards. Recently, glass plates have been enlarged for the purpose of improving the efficiency of the glass substrate manufacturing process, but the size of containers is limited, so the gap between the glass plate package stored in the container and the inner wall of the container is narrowing. When the gap between the glass plate package and the inner wall of the container narrows, workers are forced to carry out the loading and unloading operations more carefully when carrying the glass plate package into and out of the container, and workability deteriorates. The method of widening the gap by enlarging the container in accordance with the enlargement of the glass plate has problems such as a decrease in transportation efficiency due to the use of containers outside the standard and an increase in container manufacturing costs, so it is not practical.

[0005] The present invention aims to suppress the height and width of a glass plate package packaging a large glass plate, widen the gap between the glass plate package and the inner wall of the container, and improve workability when carrying the glass plate package into and out of the container. Do this.

[0006] The present invention, created to solve the above problems, includes a glass plate laminate formed by stacking a plurality of glass plates and a plurality of packaging cushioning sheets alternately in a vertical position, and a bottom surface portion of the glass plate laminate. A bottom plate supporting the back portion of the glass plate laminate, a base portion for fixing the bottom plate and the back plate, the glass plate laminate, and the A glass plate package provided with a pallet having a buffer plate disposed between back plates, characterized in that in the direction along the longitudinal side of the glass plate, the top of the back plate is lower than the top of the buffer plate. do. According to this configuration, the height and width of the glass plate package can be suppressed, and the gap between the glass plate package and the inner wall of the container can be widened. As a result, workability during loading and unloading can be improved.

[0007] In the above configuration, the base portion preferably has a groove portion in the bottom portion into which a claw of a hand lift can be inserted. Generally, a forklift is used to transport glass plate packages. However, forklifts are not suitable for precise work, so it is desirable to use a hand lift with better operability. Because the claws of a hand lift are provided with a lifting mechanism, they are thicker than the claws of a forklift. By forming a groove at the bottom of the pallet deep enough to insert the claws of the hand lift, it becomes possible to transport the glass plate package using the hand lift.

[0008] In the above configuration, the size of the glass plate is preferably 2900 mm x 3300 mm or more. According to this configuration, even a large glass plate can be accommodated in a container.

[0009] In the above configuration, the thickness of the glass plate is preferably 0.2 mm or more and 2 mm or less. Since the thickness of the glass plate is 0.2 mm or more, handling becomes easy. On the other hand, since the thickness of the glass plate is 2 mm or less, the height and width of the glass plate package can be suppressed even if a large number of glass plates are packaged.

[0010] In the above configuration, the upper end of the back plate is preferably lower than the upper end of the glass plate in the direction along the longitudinal side of the glass plate. According to this configuration, the gap between the glass plate package and the inner wall of the container can be more reliably widened.

[0011] In the above configuration, the upper end of the buffer plate is higher than the upper end of the glass plate located on the rearmost surface of the glass plate laminate in the vertical direction, and the frontmost surface of the glass plate laminate It is preferable that it is lower than the top of the glass plate located in the front. According to such a structure, the glass plate laminated body can be stably supported, and at the same time, the buffer plate does not protrude beyond the glass plate laminated body in the vertical direction, and the height and width of the glass plate package can be suppressed.

[0012] In the above configuration, it is preferable that the packaging cushioning sheet protrudes upward from the cushioning plate, and the packaging cushioning sheet is lowered toward the back side. In order to use the packaging cushioning sheet as a grip portion when taking out the packaging cushioning sheet in the unpacking process, the packaging cushioning sheet is laminated in a state that protrudes upward from the glass plate. By loading the protruding packaging cushioning sheet toward the back side, the height of the glass plate package can be suppressed.

[0013] In the above configuration, a method of opening a glass plate package in which the glass plates are taken out one by one, wherein the packaging cushioning sheet loaded on the back side is supported by a packaging cushioning sheet support jig and then the glass plates are taken out one by one. It is desirable. When opening the glass plates one by one, the packaging cushioning sheets are also taken out one by one and discarded. When the packaging cushioning sheet located at the front is taken out while the packaging cushioning sheet is loaded on the back side, the packaging cushioning sheet may get caught on the edge of the glass plate and the packaging cushioning sheet may fail to be taken out. By supporting the packaging cushioning sheet loaded on the back side using a packaging cushioning sheet support jig, it is possible to prevent the packaging cushioning sheet from being caught on the edge of the glass plate and failing to take out the packaging cushioning sheet.

[0014] According to the present invention, the height and width of the glass plate package packaging a large glass plate is suppressed, the gap between the glass plate package and the inner wall of the container is widened, and workability when carrying the glass plate package into and out of the container can be improved. there is.

[0015] Figure 1 is a front view of a glass plate package.
Figure 2 is a side view of a glass plate package.
Figure 3 is an enlarged front view of the upper part of the glass plate package.
Figure 4 is a front cross-sectional view of the glass plate package housed in a container.
Figure 5 is a side cross-sectional view of a glass plate package housed in a container.
Figure 6 is a front view of a glass plate package with a packaging cushioning sheet support jig attached to a pallet.

[0016] Below, one embodiment of the glass plate package 1 according to the present invention will be described according to the accompanying drawings.

[0017] As shown in FIGS. 1 and 2, the glass plate package 1 includes a pallet 2 and a glass plate laminate 3. The glass plate laminate 3 is placed in a vertical position on the inclined pallet 2. Here, the X-direction, Y-direction, and Z-direction shown in each figure are directions orthogonal to each other. And, the X and Y directions are horizontal directions, and the Z direction is an up and down direction. The dimension of the glass plate package 1 in the

[0018] The pallet 2 includes a bottom plate 21 supporting the bottom portion of the glass plate laminate 3, a back plate 22 supporting the rear portion of the glass plate laminate 3, and a back plate 22. ) and a buffer plate 23 sandwiched between the glass plate laminate 3 and a base portion 24 for fixing the bottom plate 21 and the back plate 22. The contact surface (bottom support surface 211) of the bottom plate 21 with the glass plate laminate 3 and the contact surface (back support surface 221) of the back plate 22 with the glass plate laminate 3 form approximately a right angle. , the bottom support surface 211 and the horizontal surface, and the back support surface 221 and the vertical surface are fixed to the base portion 24 so as to form a predetermined inclination angle.

[0019] The bottom plate 21 is formed of, for example, stainless steel, but the contact surface with the glass plate laminate 3 is preferably formed of a material that has appropriate cushioning properties and mechanical strength and has a high coefficient of friction with respect to the glass plate G. do. As such a material, for example, expanded polypropylene can be used. The back plate 22 is made of stainless steel, for example. The base portion 24 is made of stainless steel, for example. By forming the bottom plate 21, the back plate 22, and the base portion 24 from biphasic stainless steel with excellent specific strength, the pallet 2 can be made lighter. By reducing the weight of the pallet 2, the weight of the glass plate package 1 can be reduced, and workability when transporting the glass plate package 1 using a hand lift can be improved. Additionally, in this embodiment, the mass of the glass plate package 1 is at most about 5500 kg.

[0020] At the bottom of the base portion 24, two groove portions 241 for inserting claws of a hand lift, not shown, are formed along the X direction. The depth of the groove 241 is preferably 150 mm or more and 200 mm or less, more preferably 170 mm or more and 190 mm or less, and even more preferably 185 mm or more and 190 mm or less. In general, the thickness of the claws of a forklift used to transport the glass plate package (1) is about 50 mm, but the thickness of the claws of a hand lift is about 150 mm, so the pallet (2) optimized for transportation using a forklift can be transported with a hand lift. cannot be transported. The spacing and width between the groove portions 241 are determined according to the dimensions of the hand lift being used, for example, the spacing is 1050 mm and the width is 350 mm. The groove portion 241 is formed on the entire surface of the base portion 24 along the The package 1 can be transported, improving workability.

[0021] As shown in FIG. 3, the glass plate laminate 3 is formed by laminating a plurality of packaging cushioning sheets (S) between a plurality of glass plates (G). A packaging cushioning sheet S is laminated on the rearmost side and the frontmost side of the glass plate laminate 3. The glass plate G is rectangular or square, and the dimensions of the vertical and horizontal sides are preferably 2200 mm x 2500 mm or more, more preferably 2600 mm x 3000 mm or more, and even more preferably 2900 mm x 3300 mm. That's it. Moreover, the thickness dimension of the glass plate G is preferably 0.2 mm or more and 2 mm or less, more preferably 0.2 mm or more and 1 mm or less, and even more preferably 0.3 mm or more and 0.7 mm or less. The number of glass plates G constituting the glass plate laminate 3 is preferably 100 or more and 500 or less, more preferably 200 or more and 450 or less, and even more preferably 300. It is less than 400 pieces.

[0022] The upper end of the back plate 22 is lower than the upper end of the buffer plate 23 in the direction along the longitudinal side of the glass plate G. The height difference L1 between the upper end of the back plate 22 and the upper end of the buffer plate 23 in the direction along the longitudinal side of the glass plate G is preferably 5 mm or more and 20 mm or less, and more preferably 10 mm or more. It is less than 15mm. Thereby, the height (H) and width (W) of the glass plate package can be suppressed. Additionally, the buffer plate 23 is preferably made of a material rich in elasticity, such as foamed resin. As such a material, for example, a plate-shaped body of expanded polypropylene or polyethylene can be used.

[0023] The upper end of the back plate 22 is preferably lower than the upper end of the glass plate G in the direction along the longitudinal side of the glass plate G. The height difference L2 between the upper end of the back plate 22 and the upper end of the glass plate G in the direction along the longitudinal side of the glass plate G is preferably 3 mm or more and 15 mm or less, and more preferably 5 mm or more. It is less than 10mm. Thereby, the height H and width W of the glass plate package 1 can be suppressed.

[0024] With respect to the vertical direction, the upper end of the buffer plate 23 is higher than the upper end of the glass plate G located on the rearmost surface of the glass plate laminate 3, and the glass plate located on the frontmost surface of the glass plate laminate 3 It is preferable to be lower than the top of (G). Accordingly, the glass plate laminate 3 can be stably supported by the buffer plate 23, and at the same time, the buffer plate 23 does not protrude vertically upward from the glass plate laminate 3, so that the glass plate package 1 The height and width can be suppressed.

[0025] The packaging cushioning sheets (S) are alternately laminated with the glass plates (G) in order to prevent damage to the glass plates (G) due to contact between the glass plates (G). In addition, by forming the packaging cushioning sheet S using a material having appropriate elasticity, it becomes difficult for the glass plate G to be scratched even if foreign substances such as glass powder remain on the surface of the glass plate G. As such a material, for example, laminated paper or a foamed resin sheet can be used. Additionally, in this embodiment, laminated paper is used.

[0026] The upper part of the packaging cushioning sheet (S) protrudes upward from the glass plate (G) in order to use it as a grip portion when taking out the packaging cushioning sheet (S) in the opening process. The dimension L3 of the protruding portion in the direction along the longitudinal side of the glass plate is preferably 30 mm or more and 70 mm or less, and more preferably 40 mm or more and 60 mm or less. If the size of the protruding portion is smaller than this, the grip portion for suction-holding the packaging cushioning sheet S in the opening process is small, and stable suction-holding with a vacuum suction pad is not possible. On the other hand, if the size of the protruding portion is larger than this, the amount loaded toward the back side becomes large, and the loaded portion of the packaging cushioning sheet S cannot be sufficiently supported during the opening process. Since the top of the back plate 22 is lower than the top of the glass plate (G), and the top of the buffer plate 23 is higher than the top of the glass plate (G), among these protruding parts, one protrudes upward from the top of the buffer plate 23. The portion is lowered to the back side by its own weight. In FIG. 3, the state in which the packaging cushioning sheet S is supported using the back plate 22 and the cushioning plate 23 is shown by a two-dot chain line. Compared to the case where the protruding portion of the packaging cushioning sheet S is supported, the height H and width W of the glass plate package 1 can be suppressed by loading the packaging cushioning sheet S toward the back side. .

[0027] As shown in FIGS. 4 and 5, the glass plate package 1 is accommodated inside the container 4 so that the horizontal direction of the glass plate G coincides with the long direction of the container 4. The interior of the container 4 includes a floor surface 41, a ceiling surface 42, a first side 43, a second side 44, a third side 45, and a door portion 46. is provided. The internal height of the container 4 (distance between the floor surface 41 and the ceiling surface 42) is about 2700 mm, and the internal width of the container 4 (the first side 43 and the second side 44 ) The distance between them is about 2300mm. The internal depth (distance between the third side surface 45 and the door portion 46) of the container 4 is determined by a plurality of dimensions according to various standards, and is, for example, 12000 mm. Depending on the depth D of the glass plate package 1 and the interior depth of the container 4, the number of glass plate packages 1 accommodated may be one or multiple rentals.

[0028] The vertical side of the glass plate G extends along the rectangular diagonal formed by the cross section perpendicular to the X-axis direction of the container 4. Here, the angle formed by the vertical side of the glass plate G and the diagonal is preferably 10° or less, and more preferably 5° or less. As a result, the space inside the container 4 can be used efficiently. In this embodiment, the internal height of the container 4 is approximately 2700 mm, and the internal width of the container 4 is approximately 2300 mm, so the glass plate G is inclined at approximately 40° from the Z direction. When manufacturing the glass plate package 1 at this inclination angle, workability and stability during lamination of the glass plates G are good.

[0029] Figure 6 shows a front view of the glass plate package (1) when the packaging cushioning sheet support jig (5) is attached. The packaging cushioning sheet support jig 5 sandwiches the support portion 51 between the packaging cushioning sheet S and the back plate 22, and attaches the fixing portion 52 to the back plate 22 and the base portion 24. By fixing, the loaded packaging cushioning sheet S is lifted and supported. The depth D of the glass plate package 1 is determined according to the size of the glass plate G to be packaged, and is 3 m or more in some cases. For this reason, the packaging cushioning sheet support jig 5 may be divided into multiple pieces along the X direction so that only one operator can attach it. In the case where multiple workers attach the packaging cushioning sheet support jig 5, they may be provided as one unit instead of being divided.

[0030] Next, a method of opening the glass plate package 1 and taking out the glass plates G one by one will be described. A support portion 51 is inserted between the packaging cushioning sheet S loaded on the back side of the glass plate package 1 and the back plate 22 to support the loaded packaging cushioning sheet S. In that state, the fixing part 52 is fixed to the back plate 22 and the base part 24. The vacuum suction pad of the packaging cushion sheet disposal device (not shown) adsorbs and holds the packaging cushion sheet (S) located at the front of the glass plate package (1) and transports it to the packaging cushion sheet disposal location (not shown), Discard. Next, the vacuum suction pad of the glass plate transport device, not shown, adsorbs and holds the glass sheet G located on the frontmost surface of the glass sheet package 1, and transports it to the next step. Hereinafter, the discarding of the packaging cushioning sheet S and the transportation of the glass plates G are repeated until a predetermined number of glass plates G are taken out. When all the glass plates constituting the glass plate package 1 have been transported, the packaging cushioning sheet S located on the rearmost surface is discarded, and the packaging cushioning sheet support jig 5 is removed.

[0031] According to the above method, the height (H) and width (W) of the glass plate package (1) packaging the large glass plate (G) are suppressed, and the inner walls of the glass plate package (1) and the container (4) are formed. By widening the gap between them, workability when carrying the glass plate package 1 into and out of the container can be improved.

[0032] In addition, the present invention is not limited to the configuration of the above-mentioned embodiment, nor is it limited to the above-mentioned effects. The present invention can be modified in various ways without departing from the gist of the invention.

[0033] In the above embodiment, laminated paper was used as the material of the packaging cushioning sheet (S), but it is not limited to this. A foamed resin sheet or a non-foamed resin sheet may be used.

[0034] In the above embodiment, the packaging cushioning sheet support jig 5 is detachable from the pallet 2, but the present invention is not limited to this. The packaging cushioning sheet support jig 5 may be integrated with the pallet 2. In this case, the packaging cushioning sheet support jig 5 is movable on the pallet 2, and the height (H) and width (W) of the glass plate package 1 are maintained when being carried in and out of the container 4 and accommodated therein. Retreat to a position where it does not expand.

[0035] In the above embodiment, after opening the glass plate package 1, the glass plate G is adsorbed with a vacuum suction pad and transported, but the present invention is not limited to this. The glass plate G may be conveyed by being clamped by a mechanical chuck.

[0036] In the above embodiment, after opening the glass plate package 1, the packaging cushioning sheet S is adsorbed with a vacuum suction pad and transported, but the present invention is not limited to this. The packaging cushioning sheet S may be conveyed by being clamped by a mechanical chuck.

[0037] In the above embodiment, the upper end of the back plate 22 is lower than the upper end of the glass plate G in the direction along the longitudinal side of the glass plate G, but the present invention is not limited to this. The top of the glass plate G may be at the same height as the top of the back plate 22, or may be lower than the top of the back plate 22.

[0038] The present invention can be suitably used to improve work efficiency when transporting a glass plate package containing a large glass plate into and out of a container.

[0039] 1: Glass plate package
2: Pallet
21: Bottom plate
22: back plate
23: buffer plate
24: Expectation part
241: Home Department
3: Glass plate laminate
4: container
5: Packaging cushioning sheet support jig
G: glass plate
S: Packaging cushioning sheet

Claims (8)

A glass plate laminate formed by stacking a plurality of glass plates and a plurality of packaging cushioning sheets alternately in a vertical position,
A bottom plate supporting the bottom portion of the glass plate laminate, a back plate supporting the back portion of the glass plate laminate, and a base portion fixing the bottom plate and the back plate. A glass plate package including a pallet having a base portion and a buffer plate disposed between the glass plate laminate and the back plate,
A glass plate package, wherein in the direction along the longitudinal side of the glass plate, the upper end of the back plate is lower than the upper end of the buffer plate. According to paragraph 1,
A glass plate package, wherein the base portion has a groove portion in the bottom portion into which a claw of a hand lift can be inserted. According to claim 1 or 2,
A glass plate package, characterized in that the dimensions of the glass plate are 2900 mm x 3300 mm or more. According to any one of claims 1 to 3,
A glass plate package, characterized in that the thickness of the glass plate is 0.2 mm or more and 2 mm or less. According to any one of claims 1 to 4,
A glass plate package, characterized in that the top of the back plate is lower than the top of the glass plate in the direction along the longitudinal side of the glass plate. According to any one of claims 1 to 5,
The upper end of the buffer plate is higher than the upper end of the glass plate located on the rearmost surface of the glass plate laminate in the vertical direction, and the upper end of the glass plate located on the frontmost surface of the glass plate laminate A glass plate package characterized by a lower According to any one of claims 1 to 6,
The packaging cushioning sheet protrudes upward beyond the cushioning plate,
A glass plate package characterized in that the packaging cushioning sheet is loaded on the back side. An unpacking method of a glass plate package in which the glass plates are taken out one by one from the glass plate package according to claim 7,
A method of opening a glass plate package, characterized in that the packaging cushioning sheet loaded on the back side is supported by a packaging cushioning sheet support jig, and then the glass plates are taken out one by one.