Glass plate package

Abstract

To avoid occurrence of defective takeout of a protective sheet, when unpacking a glass plate packing body and taking out a glass plate and the protective sheet from a laminate.SOLUTION: A glass plate packing body 1 includes a laminate 3 formed by laminating a rectangular glass plate G and insert paper P which is a protective sheet in a tilted attitude in a cross direction, and a pallet 2 loaded with the laminate 3 in a state supported by a front face 8a of a buffer plate 8 which is a support face from the rear side. The insert paper P has an upper side protrusion part Pa protruded from an upper side Ga of the glass plate G, and the pallet 2 has a projection part 18 facing a rear surface Paa of the upper side protrusion part Pa and projecting to the furthermore front side than the front face 8a.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present invention relates to a glass plate package.

Background Art

[0002] As a form of transporting or storing various glass plates such as glass substrates for flat panel displays and glass substrates for solar cells, a glass plate and a protective sheet are alternately laminated to form a laminate, and the laminate is packed in a state of being loaded on a pallet. A glass plate package is known.

[0003] Here, Patent Document 1 discloses an example of a glass plate package. In the package disclosed in the document, a rectangular glass plate and a protective sheet constituting the laminate are laminated in the front-rear direction in an inclined posture, and the laminate is loaded on a pallet while being supported from the rear side. The protective sheet has an area slightly larger than that of the glass plate, and the protective sheet protrudes from each of the four sides of the glass plate.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] By the way, in the glass plate package disclosed in Patent Document 1, the following problems to be solved have occurred.

[0006] That is, in the package, there is a problem that the part protruding from the upper side of the glass plate in the protective sheet (hereinafter referred to as the upper-side protruding part) is likely to fall backward. Due to this, when unpacking the package, problems occur when taking out the glass plate and the protective sheet alternately from the laminate. Specifically, when taking out the protective sheet, in many cases, the upper-side protruding part of the protective sheet is adsorbed from the front side by a suction pad provided on a robot for taking out or the like. However, due to the backward fall of the upper-side protruding part, the adsorption by the suction pad fails, or the fallen upper-side protruding part gets caught on the protective sheet or the glass plate that is not the object to be taken out, resulting in problems such as poor removal of the protective sheet.

[0007] In view of the above circumstances, the present invention aims to solve the technical problem of avoiding the occurrence of poor removal of the protective sheet when unpacking a glass plate package and taking out the glass plate and the protective sheet from the laminate.

Means for Solving the Problem

[0008] The present invention for solving the above problems is a glass plate package including a laminate in which a rectangular glass plate and a protective sheet are laminated in the front-rear direction in an inclined posture, and a pallet on which the laminate is loaded while being supported by a support surface from the rear side, wherein the protective sheet has an upper-side protruding part protruding from the upper side of the glass plate, and the pallet has a protruding part facing the rear surface of the upper-side protruding part and protruding forward from the support surface.

[0009] In this package, the protruding part of the pallet protrudes forward from the support surface that supports the laminate from the rear side. As a result, even if the upper-side protruding part of the protective sheet is likely to fall backward, the protruding part can push the upper-side protruding part from the rear surface side to forcibly raise the upper-side protruding part and / or forcibly fall the upper-side protruding part forward. Therefore, it is possible to prevent the backward fall of the upper-side protruding part. As a result, it is possible to avoid the occurrence of poor removal of the protective sheet due to the backward fall of the upper-side protruding part.

[0010] In the above configuration, it is preferable that, with the direction in which the upper side of the glass plate extends being the width direction, the protruding portions are arranged so as to face the rear surface at both ends in the width direction of the upper-side overhang portion.

[0011] In this way, since the protruding portions are arranged at both ends in the width direction of the upper-side overhang portion, when unpacking the glass plate package, the risk of interference between the device for taking out the glass plate from the laminate and the device for taking out the protective sheet, and the protruding portions can be eliminated.

[0012] In the above configuration, it is preferable that the protruding portions are configured to be attachable to and detachable from the support surface, and a plurality of positions where the protruding portions can be attached are provided on the support surface, and the plurality of positions are provided at intervals in the vertical direction and / or at intervals in the width direction.

[0013] In this way, even when the sizes (dimensions in the vertical direction and width direction) of the glass plate and the protective sheet constituting the laminate are changed, the arrangement of the protruding portions can be changed in the vertical direction and the width direction in accordance with this to prevent the backward fall of the upper-side overhang portion.

Advantages of the Invention

[0014] According to the present invention, when unpacking the glass plate package and taking out the glass plate and the protective sheet from the laminate, the occurrence of defective removal of the protective sheet can be avoided.

Brief Description of the Drawings

[0015]

Figure 1

Figure 2

Figure 3

Figure 4

Embodiments for Carrying Out the Invention

[0016] Hereinafter, the glass plate package according to the embodiment of the present invention will be described with reference to the accompanying drawings. Here, in each of the drawings referred to in the description of the embodiment, the direction in which the upper side of the glass plate extends (the width direction of the glass plate) is represented as the X direction, and the vertical direction is represented as the Y direction. The X direction, Y direction, and Z direction are directions orthogonal to each other.

[0017] As shown in FIG. 1, the glass plate package 1 (hereinafter simply referred to as the package 1) includes a pallet 2 and a laminate 3 stacked on the pallet 2.

[0018] The laminate 3 is composed of a rectangular glass plate G and a rectangular interleaving paper P as a protective sheet. The glass plate G and the interleaving paper P are alternately laminated in the front-rear direction (the direction inclined with respect to the Z direction) in a state of taking an inclined posture inclined with respect to the vertical direction (Y direction). The interleaving paper P is arranged at the rearmost part of the laminate 3.

[0019] Here, as an example of the specifications of the laminate 3, the number of glass plates G constituting the laminate 3 is 100 to 400, the size (length × width) of the glass plate G is 1000 mm × 1200 mm to 2900 mm × 3200 mm, and the thickness of the glass plate G is 0.2 mm to 2 mm. The interleaving paper P constituting the laminate 3 is a so-called glass interleaving paper, for example, pure pulp paper. The interleaving paper P has a size slightly larger than that of the glass plate G (see FIG. 2). Note that a foamed resin sheet may be used as the protective sheet.

[0020] The pallet 2 mainly includes a base portion 4, a rear surface support portion 5, a bottom surface support portion 6, a holding portion 7, a buffer plate 8, and a receiving plate 9.

[0021] The base portion 4 is formed with a hole 4a for inserting a fork of a forklift or the like. The rear support portion 5 stands up from the base portion 4 and supports the rear surface of the laminate 3 via a buffer plate 8. Thereby, the front surface 8a of the buffer plate 8 functions as a support surface for supporting the laminate 3 from the rear side. The bottom support portion 6 supports the bottom surface of the laminate 3 (the lower side Gb of each glass plate G) on the base portion 4 via a receiving plate 9.

[0022] The dimension of the buffer plate 8 in the X direction is smaller than the dimension of the front surface 5a of the rear support portion 5 in the X direction, and the buffer plate 8 is attached to a region of the front surface 5a excluding the upper edge portion and both side edge portions. The areas of the glass plate G and the interleaving paper P are smaller than the area of the front surface 8a of the buffer plate 8, and the peripheral edge portion of the buffer plate 8 protrudes from the laminate 3.

[0023] The front surface 5a of the rear support portion 5 and the front surface 8a of the buffer plate 8 are inclined backward by a predetermined angle (for example, 5° to 25°) with respect to the vertical direction (Y direction). Both front surfaces 5a and 8a form, for example, a substantially right angle (for example, 90° ± 10°) with the upper surface 6a of the bottom support portion 6 (the upper surface 9a of the receiving plate 9).

[0024] The buffer plate 8 and the receiving plate 9 are made of a material rich in elasticity such as foam or rubber. In the present embodiment, both the buffer plate 8 and the receiving plate 9 are made of foamed polypropylene as the main material.

[0025] The holding portion 7 mainly includes a belt 10, a pressing bar 11, and a side stopper 12.

[0026] The belt 10 is a ratchet belt provided with a ratchet portion 13. The belt 10 is hooked on a hook 14 disposed behind the rear support portion 5, and after being doubled, it is tightened by the ratchet portion 13 on the front surface of the pressing bar 11.

[0027] A pressing plate 15 is arranged on the front side of the laminate 3, and a frame 16 is arranged on the further front side of the pressing plate 15. A hook 17 is provided on the frame 16, and the pressing bar 11 is placed on the hook 17. As the belt 10 is tightened, the pressing bar 11 presses the frame 16 backward, and further the frame 16 presses the pressing plate 15 backward. Thereby, the laminate 3 is fixed on the pallet 2 in a state of being pressed against the buffer plate 8.

[0028] The pressing bar 11 is combined with the belt 10 such that its longitudinal direction is the X direction. In the present embodiment, two pressing bars 11 are arranged at intervals vertically.

[0029] Note that the above-described holding portion 7 is an example, and as long as the laminate 3 can be fixed to the pallet 2, a holding portion 7 having another configuration may be used.

[0030] As shown in FIG. 2, the pasted paper P protrudes from each of the upper side Ga and both side sides Gc, Gc of the glass plate G. On the other hand, the pasted paper P does not protrude from the lower side Gb of the glass plate G, and the lower side Gb of the glass plate G and the pasted paper P are at the same position. Note that the lower side Gb of the glass plate G may protrude from the lower side of the pasted paper P. In the following description, the portion of the pasted paper P that protrudes from the upper side Ga of the glass plate G is referred to as the upper side protruding portion Pa. In FIG. 2, for convenience of explanation, only the glass plate G and the pasted paper P arranged on the rearmost side among the plurality of glass plates G and the plurality of pasted papers P constituting the laminate 3 are illustrated.

[0031] As shown in FIGS. 2 and 3, a protrusion 18 protrudes forward from the front surface 8a of the buffer plate 8. The protrusion 18 is disposed above the upper side Ga of the glass plate G on the rearmost side, and faces the rear surface Paa of the upper side protruding portion Pa of each sheet P constituting the laminate 3. In the present embodiment, the protrusions 18 are paired in the X direction, and both paired protrusions 18, 18 face the rear surface Paa at both ends in the X direction of the upper side protruding portion Pa. That is, both paired protrusions 18, 18 are disposed corresponding to the upper corner portions of the rectangular shape formed by the sheet P. In the present embodiment, the outer shape of the protrusion 18 is formed in a rectangular parallelepiped shape.

[0032] Here, regarding the protrusion 18, the length L protruding from the front surface 8a of the buffer plate 8 is preferably 10 mm or more from the viewpoint of facilitating the attachment and detachment operations described later. From the viewpoint of reliably preventing the upper side protruding portion Pa from falling backward, when the thickness of the laminate 3 is t (mm), the length L (mm) is preferably 0.2t to 0.8t. The protrusion 18 can be made of a material such as rubber, resin, or foam. However, the present invention is not limited thereto, and the protrusion 18 may be made of other materials as long as the material does not damage the glass plate G when contacting it. Further, the outer shape of the protrusion 18 does not have to be a rectangular parallelepiped shape, and for example, it may be a cylindrical shape, a triangular prism shape, a polygonal prism shape, a hemispherical shape, a semi-elliptical spherical shape, a conical shape, a triangular pyramid shape, a polygonal pyramid shape, or a strip shape extending in the X direction.

[0033] In addition, when the package 1 is unpacked and the glass plate G and the sheets P are alternately taken out from the laminate 3, when taking out the sheet P, a robot equipped with a suction pad is often used. Then, the region inside the corner portion (the region located between the paired protrusions 18, 18) of the upper side protruding portion Pa of the sheet P is sucked from the front side by the suction pad provided on the robot.

[0034] The protruding portion 18 is configured to be attachable and detachable with respect to the front surface 8a of the buffer plate 8. The locations indicated by the cross marks in FIG. 4 are positions where the protruding portion 18 can be attached, and a plurality of positions where the protruding portion 18 can be attached are provided on the front surface 8a. These plurality of positions are provided at intervals in the vertical direction and the X direction. Thereby, even when the sizes of the glass plate G and the interleaving paper P constituting the laminate 3 are changed, by changing the arrangement of the protruding portion 18 accordingly, it is possible to arrange the protruding portion 18 corresponding to the upper corner portion of the rectangular shape formed by the interleaving paper P.

[0035] Here, an example of a configuration that enables attachment and detachment of the protruding portion 18 with respect to the front surface 8a of the buffer plate 8 will be illustrated. As one configuration example, the protruding portion 18 is formed as a rod-shaped member, and a part of the rod-shaped member is embedded in a hole formed in the buffer plate 8 in a fitted state, and the other part is exposed from the buffer plate 8 so as to protrude from the front surface 8a.

[0036] Hereinafter, the main actions and effects of the above-described package 1 will be described.

[0037] In the above-described package 1, the protruding portion 18 protrudes to the front side of the front surface 8a of the buffer plate 8 that supports the laminate 3 from the rear side. Thereby, even when the upper edge protruding portion Pa of the interleaving paper P is about to fall backward, as shown in FIG. 3, the protruding portion 18 pushes the upper edge protruding portion Pa from the rear surface Paa side, and can force the upper edge protruding portion Pa to stand up and / or force the upper edge protruding portion Pa to fall forward. Therefore, it is possible to prevent the upper edge protruding portion Pa from falling backward. As a result, it is possible to avoid the occurrence of a defective take-out of the interleaving paper P due to the backward fall of the upper edge protruding portion Pa. In addition, when the protruding portion 18 does not exist, the upper edge protruding portion Pa of the interleaving paper P existing on the front side of the laminate 3 is more likely to fall backward.

[0038] Here, the glass plate package according to the present invention is not limited to the configuration described in the above embodiment. For example, in the above embodiment, the pair of protruding portions 18, 18 are respectively arranged corresponding to the upper corner portions of the rectangular shape formed by the interleaving paper P, but this is not the only case. Instead of being arranged corresponding to the upper corner portions, the protruding portions 18 may be arranged corresponding to the space between the upper corner portions on both sides. Or, in addition to being arranged corresponding to the upper corner portions, the protruding portions 18 may also be arranged corresponding to the space between the upper corner portions on both sides.

[0039] Furthermore, in the above embodiment, the protruding portion 18 is attached to the front surface 8a of the buffer plate 8, but it is not limited thereto. The conditions required for the protruding portion 18 are that it faces the rear surface Paa of the upper edge protruding portion Pa and protrudes forward of the support surface (the front surface 8a of the buffer plate 8 in the above embodiment) that supports the laminate 3 from the rear side. Therefore, as long as this condition is satisfied, for example, the protruding portion 18 may be attached to a member different from the front surface 8a of the buffer plate 8 and be independent of the front surface 8a.

Explanation of Reference Numerals

[0040] 1 Glass plate package 2 Pallet 3 Laminate 8a Front surface of the buffer plate (support surface) 18 Protruding portion G Glass plate Ga Upper edge of the glass plate P Interleaving paper (protective sheet) Pa Upper surface protruding portion Paa Rear surface of the upper surface protruding portion

Claims

1. A glass plate package comprising a laminate in which a rectangular glass plate and a protective sheet are laminated in a tilted posture in the front-rear direction, and a pallet on which the laminate is loaded while being supported by a support surface from the rear side, wherein the protective sheet has an upper side protruding portion protruding from the upper side of the glass plate, the pallet has a protruding portion that faces the rear surface of the upper side protruding portion and is disposed on the support surface and protrudes forward from the support surface, and the protruding portion is arranged so as to push the upper side protruding portion from the rear surface side at least when the glass plate and the protective sheet are taken out of the laminate. The glass plate package is characterized by this.

2. With the direction in which the upper side of the glass plate extends as the width direction, the glass plate package according to claim 1, wherein the protruding portions are arranged so as to face the rear surface at both ends in the width direction of the upper side protruding portion.

3. the protruding portion is configured to be attachable and detachable to and from the support surface, a plurality of positions where the protruding portion can be attached are provided on the support surface, and the plurality of positions are provided at intervals in the vertical direction and / or at intervals in the width direction. The glass plate package according to claim 2 is characterized by this.

Images