JP2021046239A - Glass plate packing body - Google Patents

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: In a glass plate packing body 1 including a laminate 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 in a state supported 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 at least both ends of the upper side of the upper side protrusion part Pa are formed in a wave shape.SELECTED DRAWING: Figure 2

Description

The present invention relates to a glass plate package.

As a form for transporting or storing various glass plates such as a glass substrate for a flat panel display and a glass substrate for a solar cell, glass plates and protective sheets are alternately laminated to form a laminate, and the lamination is performed. There is known a glass plate packing body that packs a body in a state of being loaded on a pallet.

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

Japanese Unexamined Patent Publication No. 2013-052895

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

That is, the same package has a drawback that the portion of the protective sheet that protrudes from the upper side of the glass plate (hereinafter, referred to as the upper side protrusion portion) easily falls to the rear side. In particular, both ends of the upper side eclipse (both ends in the direction in which the upper side extends) are prone to fall. Due to this, when unpacking the package, a problem occurs when the glass plate and the protective sheet are alternately taken out from the laminate. More specifically, when the protective sheet is taken out, the upper side protrusion portion of the protective sheet is often sucked from the front side by the suction pad provided on the taking-out robot or the like. However, due to the fall of the upper side protrusion to the rear side, suction by the suction pad fails, or the fallen upper side protrusion is caught on a protective sheet or glass plate that is not the target of removal, and is protected. There was a problem that a sheet removal failure occurred.

In view of the above circumstances, the present invention has a technical problem of avoiding the occurrence of defective removal of the protective sheet when the glass plate package is unpacked and the glass plate and the protective sheet are taken out from the laminated body. To do.

The present invention for solving the above problems includes a laminate in which a rectangular glass plate and a protective sheet are laminated in a front-rear direction in an inclined posture, and a pallet in which the laminate is supported from the rear side. The protective sheet has an upper side protrusion protruding from the upper side of the glass plate, and at least both ends of the upper side of the upper side protrusion are formed in a wavy shape. It is characterized by that.

In this package, at least both ends of the upper side of the upper side protrusion (protective sheet) are formed in a wavy shape, so that the weight of both ends is reduced. In detail, the weight at both ends is lightened by the presence of the part corresponding to the valley of the wave. Further, by reducing the weight, it is possible to prevent both ends of the upper side protrusion portion from falling to the rear side, and it is also possible to prevent the middle portion of the upper side protrusion portion from falling to the rear side accordingly. As a result, it is possible to avoid the occurrence of defective removal of the protective sheet due to the tilting of the upper side protruding portion to the rear side.

In the above configuration, it is preferable that the entire length of the upper side of the upper side protruding portion is formed in a wavy shape.

By doing so, the overall length of the upper side protrusion portion can be reduced, so that the upper side protrusion portion can be more preferably prevented from falling to the rear side. Therefore, it is further advantageous in avoiding the occurrence of defective removal of the protective sheet.

In the above configuration, it is preferable that a crease extending from the upper side of the upper side protrusion portion is formed in the upper side protrusion portion.

In this way, as the crease extending from the upper side of the upper side eclipse portion is formed in the upper side eclipse portion, the stiffness of the upper side eclipse portion becomes stronger. The fall can be prevented more preferably. This is even more advantageous in avoiding the occurrence of defective removal of the protective sheet.

According to the present invention, when the glass plate package is unpacked and the glass plate and the protective sheet are alternately taken out from the laminated body, it is possible to avoid the occurrence of defective removal of the protective sheet.

It is a perspective view which shows the glass plate packing body. It is a front view which shows the glass plate packing body. It is an enlarged view which shows the part A in FIG. 2 enlarged. It is sectional drawing which shows the BB cross section in FIG. It is a perspective view which shows the apparatus used for manufacturing the interleaving paper contained in a glass plate packing body. It is a top view which shows the apparatus used for manufacturing the interleaving paper contained in a glass plate packing body. It is an enlarged view which shows the part C in FIG. 6 enlarged. FIG. 8A is a cross-sectional view showing a mode in which the interleaving paper is cut on the DD cross section in FIG. 7. FIG. 8B is a cross-sectional view showing a mode in which the interleaving paper is cut on the EE cross section in FIG. 7. It is a perspective view which shows the modification of the apparatus used for manufacturing the interleaving paper contained in a glass plate packing body.

Hereinafter, the glass plate package according to the embodiment of the present invention will be described with reference to the attached drawings. Here, in each drawing 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 by the X direction, and the vertical direction is represented by the Y direction. The X, Y, and Z directions are orthogonal to each other.

As shown in FIG. 1, the glass plate packing body 1 (hereinafter, simply referred to as the packing body 1) includes a pallet 2 and a laminated body 3 loaded on the pallet 2.

The laminate 3 is composed of a rectangular glass plate G and a substantially 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 being inclined with respect to the vertical direction (Y direction). The interleaving paper P is arranged at the rearmost part of the laminated body 3. As will be described in detail later, the interleaving paper P is not formed in a rectangular shape, but in FIG. 1, the interleaving paper P is drawn in a rectangular shape for convenience.

Here, to give an example of the specifications of the laminated body 3, the number of glass plates G constituting the laminated body 3 is 200 to 400, and the size (length x width) of the glass plate G is 1000 mm x 1200 mm to 2900 mm x. The thickness of the glass plate G is 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 one size larger than that of the glass plate G (see FIG. 2). A foamed resin sheet may be used as the protective sheet.

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 cushioning plate 8, and a receiving plate 9.

A hole 4a for inserting a fork such as a forklift is formed in the base portion 4. The rear surface support portion 5 stands up from the base portion 4 and supports the rear surface of the laminated body 3 via the cushioning plate 8. As a result, the front surface 8a of the cushioning plate 8 functions as a support surface that supports the laminated body 3 from the rear side. The bottom surface support portion 6 supports the bottom surface of the laminated body 3 (lower side Gb of each glass plate G) on the base portion 4 via the receiving plate 9.

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

The front surface 5a of the rear surface support portion 5 and the front surface 8a of the cushioning plate 8 are tilted rearward 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 surface support portion 6 (upper surface 9a of the receiving plate 9).

The cushioning plate 8 and the receiving plate 9 are made of a highly elastic material such as a foam or rubber. In the present embodiment, both the cushioning plate 8 and the receiving plate 9 are made of expanded polypropylene as a main material.

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

The belt 10 is a ratchet belt provided with a ratchet portion 13. The belt 10 is hooked on a hook 14 arranged behind the rear support portion 5, doubled, and then tightened by the ratchet portion 13 on the front surface of the presser bar 11.

A pressing plate 15 is arranged on the front side of the laminated body 3, and a frame 16 is arranged on the front side of the pressing plate 15. A hook 17 is provided on the frame 16, and a holding bar 11 is placed on the hook 17. As the belt 10 is tightened, the presser bar 11 presses the frame 16 rearward, and the frame 16 further presses the presser plate 15 rearward. As a result, the laminated body 3 is fixed on the pallet 2 in a state of being pressed against the cushioning plate 8.

The presser bar 11 is combined with the belt 10 so that its longitudinal direction is the X direction. In the present embodiment, the two presser bars 11 are arranged vertically at intervals.

The above-mentioned holding portion 7 is an example, and a holding portion 7 having another configuration may be used as long as the laminated body 3 can be fixed to the pallet 2.

As shown in FIG. 2, the interleaving paper P protrudes from each of the upper side Ga and both side sides Gc and Gc of the glass plate G. On the other hand, the interleaving 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 interleaving paper P are at the same position. The lower side Gb of the glass plate G may protrude from the lower side of the interleaving paper P. In the following description, the portion of the interleaving paper P that protrudes from the upper side Ga of the glass plate G is referred to as the upper side protrusion Pa. In addition, in FIG. 2 and FIGS. 3 and 4 which will be referred to later, for convenience of explanation, the plurality of glass plates G and the plurality of interleaving papers P constituting the laminated body 3 are arranged on the rearmost side. Only the glass plate G and the interleaving paper P are shown.

When viewed from the direction in which the glass plate G is viewed from the front (corresponding to the thickness direction of the glass plate G), the entire length of the upper side of the upper side protruding portion Pa (interleaving paper P) in the X direction is formed in a wavy shape. In the present embodiment, the wave shape formed by the upper side of the upper side eclipse portion Pa is a triangular wave. The wave valley is located above the upper side Ga of the glass plate G.

Here, as a modification of the present embodiment, the wave shape formed by the upper side of the upper side of the interleaving paper P, the protrusion Pa, may be an arbitrary wave shape such as a sine wave, a square wave, a sawtooth wave, or a trapezoidal wave. Further, in the present embodiment, the wave shape formed by the upper side of the upper side eclipse portion Pa is formed periodically, but it may be formed aperiodically.

As shown in FIG. 3, a crease Pf extending from the upper side of the upper side eclipse portion Pa is formed in the upper side eclipse portion Pa. Specifically, the crease Pf extends from the peak of the triangular wave formed by the upper side of the upper side eclipse portion Pa. Further, when the glass plate G is viewed from the front, the crease Pf has a triangular wave shape and is formed over the entire length of the upper side of the upper side protrusion Pa. Further, the height of the triangular wave formed by the crease Pf (the length in the Y direction) is higher than the height of the triangular wave formed by the upper side of the upper side eclipse portion Pa. By forming the crease Pf forming such a wave shape, the stiffness of the upper side eclipse portion Pa can be further strengthened over the entire length of the upper side eclipse portion Pa. The entire crease Pf is located above the upper side Ga of the glass plate G.

As shown in FIG. 4, the portion above the crease Pf in the upper side eclipse portion Pa is in a state of being bent forward. Although not shown, creases Pf having the same shape are formed in the interleaving paper P other than the interleaving paper P arranged at the rearmost position.

Here, as a modification of the present embodiment, the crease Pf of the interleaving paper P may be formed so that the portion of the upper side eclipse portion Pa above the crease Pf is bent rearward. That is, the direction of bending due to the crease Pf may be opposite to that of the present embodiment. Further, in the present embodiment, the crease Pf extending from the upper side of the upper side eclipse portion Pa is formed, but the crease Pf is formed in any form as long as a part thereof is formed on the upper side eclipse portion Pa. It may be the one that has been done.

Hereinafter, an example of a method for manufacturing the above-mentioned interleaving paper P will be given.

The apparatus shown in FIGS. 5 and 6 is used for manufacturing the interleaving paper P. The apparatus can cut out the interleaving paper P from the strip-shaped interleaving paper MP by cutting the strip-shaped interleaving paper MP, which is the source of the interleaving paper P, at predetermined lengths.

The above device mainly includes a cutter 18, a cutter combination member 19, a support member 20, and a pair of pressing members 21 and 21 (FIG. 6 shows only the cutter 18 and the cutter combination member 19). The strip-shaped interleaving paper MP is sequentially conveyed in the direction indicated by the arrow F by a transfer mechanism (not shown).

The blade 18a provided on the cutter 18 is formed in the shape of a triangular wave. The blade 18a cuts into the strip-shaped interleaving paper MP from above, and cuts the strip-shaped interleaving paper MP along the width direction. The cut end formed by cutting is formed in the shape of a triangular wave. A pair of cut ends is formed with the blade 18a interposed therebetween. Of these paired cutting ends, the cutting end MPa (see FIG. 8) located on the upstream side of the transfer with respect to the blade 18a later becomes the upper side protrusion Pa of the interleaving paper P. On the other hand, the cut end portion located on the downstream side of the transport with respect to the blade 18a later becomes the lower edge portion of the interleaving paper P.

Here, when the wave shape formed by the upper side of the upper side of the interleaving paper P is not a triangular wave but a sine wave, a square wave, a sawtooth wave, a trapezoidal wave, or the like, the blade 18a of the cutter 18 is used. The blade 18a formed in a wavy shape may be adopted.

The cutter combination member 19 has an uneven portion 19a. The uneven portion 19a meshes with the wavy shape formed by the blade 18a of the cutter 18 when cutting the strip-shaped interleaving paper MP. As will be described in detail later, a crease Pf (see FIG. 8) is formed at the cut end portion MPa following the contour (concavo-convex) of the uneven portion 19a. The cutter combination member 19 supports the strip-shaped interleaving paper MP from below on the transport upstream side of the cutter 18. On the other hand, the support member 20 supports the strip-shaped interleaving paper MP from below on the transport downstream side of the cutter 18.

One of the pair of pressing members 21 and 21 holds the strip-shaped interleaving paper MP from above in order to sandwich the strip-shaped interleaving paper MP from the front and back in cooperation with the cutter combination member 19 when the strip-shaped interleaving paper MP is cut by the cutter 18. suppress. On the other hand, the other of the pair of pressing members 21 and 21 is used to sandwich the strip-shaped interleaving paper MP from the front and back in cooperation with the support member 20 when the strip-shaped interleaving paper MP is cut by the cutter 18. From above.

As shown in FIG. 7, when the blade 18a provided on the cutter 18 and the uneven portion 19a of the cutter combination member 19 mesh with each other, a V-shaped gap 22 in a plan view is formed between the blades 18a and 19a. Is formed. The width of the gap 22 (width along the transport direction of the strip-shaped interleaving paper MP) is widest in the valley portion of the uneven portion 19a and narrowest in the mountain portion of the uneven portion 19a. In the present embodiment, the width of the gap 22 in the mountain portion of the uneven portion 19a is substantially zero.

When the strip-shaped interleaving paper MP is cut using the above device, the strip-shaped interleaving paper MP is cut between the peak portion and the valley portion of the uneven portion 19a of the cutter combination member 19. , The difference as shown in comparison with FIGS. 8 (a) and 8 (b) occurs.

As shown in FIG. 8A, the mountain portion of the uneven portion 19a is located on the upstream side of the transport with respect to the blade 18a among the pair of cutting ends formed by cutting the strip-shaped interleaving paper MP. The cut end MPa does not become bent. On the other hand, in the valley portion of the uneven portion 19a, as shown in FIG. 8B, the cut end portion MPa protruding from the uneven portion 19a to the downstream side of the transport by the width of the gap 22 described above is uneven. It is in a bent state along the portion 19a. Along with this, a crease Pf is formed at the cut end MPa. In the portion of the uneven portion 19a between the peak and the valley, the cut end portion MPa is in a bent state along the uneven portion 19a in the same manner as the valley portion, and a crease Pf is formed.

From the above, when the strip-shaped interleaving paper MP is cut using the above device, the cut end portion that later becomes the upper side protrusion Pa of the interleaving paper P following the wave shape (triangle wave) formed by the blade 18a of the cutter 18. MPa is formed in the shape of a triangular wave. Further, a crease Pf is formed at the cut end portion MPa following the contour (concavo-convex) of the uneven portion 19a of the cutter combination member 19. Then, each time the strip-shaped interleaving paper MP is cut once, a new interleaving paper P is cut out and manufactured.

Hereinafter, the main actions / effects of the above-mentioned packaging body 1 will be described.

In the above-mentioned packing body 1, the upper side of the upper side eclipse portion Pa (interval sheet P) is formed in a wavy shape, and the weight is reduced by the amount of a portion corresponding to the valley of the wave. By reducing the weight of the upper side eclipse part Pa in this way, it is possible to prevent both ends of the upper side eclipse part Pa from falling to the rear side, and accordingly, the middle part of the upper side eclipse part Pa is on the rear side. It is also possible to prevent it from falling over. As a result, it is possible to avoid the occurrence of poor removal of the interleaving paper P due to the fall of the upper side protrusion Pa to the rear side.

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 total length of the upper side protrusion Pa in the X direction is formed in a wavy shape, but this is not the case. At least both ends of the upper side of the upper side protrusion Pa may be formed in a wavy shape, for example, only both ends may be formed in a wavy shape.

Further, the crease Pf formed on the upper side eclipse portion Pa may be not limited to the crease Pf described in the above embodiment (crease Pf due to the uneven portion 19a), but may further form an additional crease Pf. When forming the additional crease Pf, as an example, the cutter combination member 19 as shown in FIG. 9 may be adopted as the apparatus for manufacturing the interleaving paper P. The cutter combination member 19 has a plurality of recessed portions 19b, and the recessed portion 19b has a ridge line 19c and a valley bottom line 19d. According to the cutter combination member 19, a crease Pf can be additionally formed along the ridge line 19c and the valley bottom line 19d with the cutting of the strip-shaped interleaving paper MP. The crease Pf formed by the ridge line 19c extends from the valley of the triangular wave formed by the upper side of the upper side eclipse portion Pa, and has a triangular wave shape when viewed from the front view of the glass plate G. Further, the crease Pf formed by the ridge line 19c is formed over the entire length of the upper side of the upper side protrusion Pa. If the crease Pf forming such a wave shape is additionally formed, the stiffness of the upper side eclipse portion Pa can be further strengthened over the entire length of the upper side eclipse portion Pa. It should be noted that the crease Pf formed by the ridge line 19c and / or the valley bottom line 19d may be formed without forming the crease Pf by the uneven portion 19a.

1 Glass plate packing body 2 Pallet 3 Laminated body G Glass plate Ga Glass plate upper side P interleaving paper (protective sheet)
Pa creases on the top side of the interleaving paper Pf interleaving paper

Claims (3)

A glass plate packing body including a laminated body in which a rectangular glass plate and a protective sheet are laminated in a front-rear direction in an inclined posture, and a pallet in which the laminated body is loaded while being supported from the rear side.
The protective sheet has an upper side protrusion portion that protrudes from the upper side of the glass plate.
A glass plate packing body characterized in that at least both ends of the upper side of the upper side protruding portion are formed in a wavy shape. The glass plate packing body according to claim 1, wherein the entire length of the upper side of the upper side protruding portion is formed in a wavy shape. The glass plate packaging body according to claim 1 or 2, wherein a crease extending from the upper side of the upper side protrusion portion is formed in the upper side protrusion portion.

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