JP7324419B2 - Glass plate package - Google Patents

Description

The present invention relates to a glass plate package.

As a mode for transporting or storing various glass plates such as glass substrates for flat panel displays and glass substrates for solar cells, glass plates and protective sheets are alternately laminated to form a laminate, and the lamination is performed. A glass plate package is known, which is packed while being loaded on a pallet.

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

JP 2013-052895 A

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

That is, in the same package, there is a problem that the portion of the protective sheet protruding from the upper side of the glass plate (hereinafter referred to as the upper side protruding portion) tends to fall backward. In particular, both ends of the overhanging portion of the upper side (both ends in the direction in which the upper side extends) are likely to collapse. Due to this, in unpacking the same 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 to be taken out, it is often the case that a suction pad provided on a take-out robot or the like is used to suck the overhanging portion of the upper side of the protective sheet from the front side. However, due to the tilting of the upper side protruding portion to the rear side, the suction by the suction pad may fail, or the fallen upper side protruding portion may be caught on the protective sheet or glass plate which is not the target of removal, and thus protected. There was a problem that sheet take-out failure occurred.

The present invention, which has been devised in view of the above circumstances, has a technical problem of avoiding the occurrence of failure to take out the protective sheet when unpacking the glass plate package and taking out the glass plate and the protective sheet from the laminate. do.

In order to solve the above problems, the present invention provides a laminate in which a rectangular glass plate and a protective sheet are laminated in an inclined posture in the front-rear direction, and a pallet on which the laminate is loaded while being supported from the rear side. wherein the protective sheet has a protruding upper edge protruding from the upper edge of the glass plate, and at least both ends of the upper edge of the protruding upper edge are formed in a corrugated shape It is characterized by

In this package, at least both ends of the upper side of the upper edge protruding portion (protective sheet) are formed in a corrugated shape, thereby reducing the weight of both ends. To be more specific, the weight of both ends is lightened by the portion corresponding to the trough of the wave. In addition, since the weight is reduced, it is possible to prevent both ends of the upper-side protruding portion from collapsing backward, thereby preventing the intermediate portion of the upper-side protruding portion from collapsing backward. As a result, it is possible to avoid the occurrence of failure to take out the protective sheet due to the tilting of the overhanging 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.

With this arrangement, the entire length of the protruding portion on the upper side can be reduced in weight, so that the protruding portion on the upper side can be more preferably prevented from collapsing backward. Therefore, it is more advantageous in avoiding the occurrence of failure to take out the protective sheet.

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

In this way, the crease extending from the upper side of the upper-side protruding portion is formed in the upper-side protruding portion. Falling down can be prevented more preferably. This is more advantageous in avoiding the occurrence of failure to take out the protective sheet.

ADVANTAGE OF THE INVENTION According to this invention, when a glass plate package is unpacked and a glass plate and a protective sheet are alternately taken out from a laminated body, generation|occurrence|production of the taking-out failure of a protective sheet can be avoided.

It is a perspective view which shows a glass plate package. It is a front view which shows a glass plate package. It is an enlarged view which expands and shows the A section in FIG. FIG. 4 is a sectional view showing a BB section in FIG. 3; FIG. 2 is a perspective view showing an apparatus used for manufacturing interleaving paper contained in the glass plate package. FIG. 3 is a plan view showing an apparatus used for manufacturing interleaving paper contained in the glass plate package. It is an enlarged view which expands and shows the C section in FIG. FIG. 8(a) is a cross-sectional view showing how the interleaving paper is cut on the DD cross section in FIG. FIG. 8(b) is a cross-sectional view showing how the interleaving paper is cut on the EE cross section in FIG. It is a perspective view which shows the modification of the apparatus used for manufacture of the interleaving paper contained in a glass plate package.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, glass plate packages according to embodiments of the present invention will be described with reference to the accompanying drawings. Here, in each drawing referred to in the description of the embodiments, the direction in which the upper side of the glass plate extends (the width direction of the glass plate) is expressed as the X direction, and the vertical direction is expressed as the Y direction. The X-direction, Y-direction, and Z-direction are directions perpendicular to each other.

As shown in FIG. 1 , a glass plate package 1 (hereinafter simply referred to as package 1 ) includes a pallet 2 and a laminate 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 tilted with respect to the Z direction) in a state of being tilted with respect to the vertical direction (Y direction). An interleaving paper P is arranged at the rear end of the laminate 3 . Although the interleaving paper P is not formed in a rectangular shape, as will be described in detail later, the interleaving paper P is drawn in a rectangular shape in FIG. 1 for the sake of convenience.

Here, to give an example of the specifications of the laminate 3, the number of glass plates G constituting the laminate 3 is 200 to 400, and the size of the glass plate G (length x width) is 1000 mm x 1200 mm to 2900 mm x 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 so-called glass interleaving paper, such as pure pulp paper. The interleaving paper P has a size one size larger than 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 buffer plate 8 and a receiving plate 9 .

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

The X-direction dimension of the buffer plate 8 is smaller than the X-direction dimension of the front surface 5a of the rear surface support portion 5, and the buffer plate 8 is attached to a region of the front surface 5a excluding the upper edge and both side edges. ing. The area of the glass plate G and the interleaving paper P is smaller than the area of the front surface 8 a of the buffer plate 8 , and the peripheral portion of the buffer 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 buffer plate 8 are inclined rearward by a predetermined angle (eg, 5° to 25°) with respect to the vertical direction (Y direction). Both of the front surfaces 5a and 8a form 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).

The buffer plate 8 and the receiving plate 9 are made of a highly elastic material such as foam or rubber. In this embodiment, both the buffer plate 8 and the receiving plate 9 are mainly made of foamed polypropylene.

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

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

A holding plate 15 is arranged on the front side of the laminate 3 , and a frame 16 is arranged further on the front side of the holding plate 15 . A hook 17 is provided on the frame 16, and the pressing bar 11 is placed on the hook 17. - 特許庁As the belt 10 is tightened, the pressing bar 11 presses the frame 16 rearward, and the frame 16 presses the pressing plate 15 rearward. As a result, the laminate 3 is fixed on the pallet 2 while being pressed against the buffer plate 8 .

The presser bar 11 is combined with the belt 10 so that its longitudinal direction is in the X direction. In this embodiment, two pressing bars 11 are arranged with a space therebetween.

Note that the holding portion 7 described above is merely an example, and a holding portion 7 having another configuration may be used as long as the stack 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, Gc of the glass plate G. As shown in FIG. 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. In addition, the lower side Gb of the glass plate G may protrude from the lower side of the interleaving paper P. In the following description, a portion of the interleaving paper P protruding from the upper side Ga of the glass plate G is referred to as an upper side protruding portion Pa. In addition, in FIG. 2 and FIGS. 3 and 4 to be referred later, for convenience of explanation, among the plurality of glass plates G and the plurality of interleaving papers P constituting the laminate 3, the Only the glass plate G and the interleaving paper P are illustrated.

When viewed from the front view direction of the glass plate G (which coincides with the thickness direction of the glass plate G), the entire length of the upper side of the upper edge protruding portion Pa (interleaving paper P) in the X direction is formed in a wavy shape. In the present embodiment, the wavy shape formed by the upper side of the upper side protruding portion Pa is a triangular wave. The valley of the wave 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 edge protrusion Pa of the interleaving paper P may be any wave shape such as a sine wave, a rectangular wave, a sawtooth wave, or a trapezoidal wave. Further, in the present embodiment, the wavy shape formed by the upper edge of the upper edge protrusion Pa is formed periodically, but may be formed aperiodically.

As shown in FIG. 3, the upper side protruding portion Pa is formed with a fold line Pf extending from the upper side of the upper side protruding portion Pa. As shown in FIG. Specifically, the fold line Pf extends from a triangular wave crest formed by the upper side of the upper side protruding portion Pa. Further, when the glass plate G is viewed from the front, the fold line Pf has a triangular wave shape and is formed over the entire length of the upper side of the upper edge protrusion Pa. Moreover, the height (length in the Y direction) of the triangular wave formed by the fold line Pf is higher than the height of the triangular wave formed by the upper side of the upper side protrusion Pa. By forming such a wavy fold line Pf, the stiffness of the upper side protruding portion Pa can be further strengthened over the entire length of the upper side protruding portion Pa. The fold line Pf is positioned above the upper side Ga of the glass plate G as a whole.

As shown in FIG. 4, the portion above the fold line Pf in the upper side protruding portion Pa is bent forward. Although not shown in the drawings, a similar fold line Pf is also formed on the interleaving paper P other than the last interleaving paper P. As shown in FIG.

Here, as a modification of the present embodiment, the fold line Pf of the interleaving paper P may be formed such that the portion of the upper side protruding portion Pa above the fold line Pf is bent rearward. That is, the direction of bending at the fold line Pf may be opposite to that of the present embodiment. Further, in the present embodiment, the fold line Pf is formed extending from the upper side of the upper side protruding portion Pa, but the fold line Pf can be formed in any form as long as a part of the fold line Pf is formed in the upper side protruding portion Pa. It may have been

An example of a method for manufacturing the interleaving paper P will be given below.

The device shown in FIGS. 5 and 6 is used to manufacture the interleaving paper P. FIG. The apparatus can cut out the interleaving paper P from the strip-like interleaving paper MP by cutting the strip-like interleaving paper MP, which is the source of the interleaving paper P, into predetermined lengths.

The above apparatus mainly comprises a cutter 18, a cutter combination member 19, a support member 20, and a pair of holding members 21, 21 (only cutter 18 and cutter combination member 19 are shown in FIG. 6). The strip-shaped interleaving paper MP is sequentially transported in the direction indicated by the arrow F by a transport mechanism (not shown).

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

Here, when the wave shape formed by the upper side of the upper side overhanging portion Pa of the interleaving paper P is not a triangular wave but a sine wave, rectangular wave, sawtooth wave, trapezoidal wave, or the like, the blade 18a of the cutter 18 may be made of these waves. A wave-shaped blade 18a may be employed.

The cutter combination member 19 has an uneven portion 19a. The concave-convex 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 fold line Pf (see FIG. 8) is formed at the cut edge MPa following the outline (concave and convex) of the uneven portion 19a. The cutter combination member 19 supports the strip-shaped interleaving paper MP from below on the upstream side of the cutter 18 in transport. On the other hand, the support member 20 supports the strip-shaped interleaving paper MP from below on the downstream side of the cutter 18 in the transport direction.

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

As shown in FIG. 7, when the blade 18a provided on the cutter 18 and the concave-convex portion 19a provided on the cutter combination member 19 are engaged with each other, a gap 22 forming a V-shape in plan view is formed between the two members 18a and 19a. is formed. The width of the gap 22 (the width along the conveying direction of the strip-shaped interleaving paper MP) is widest at the valley portions of the uneven portions 19a and narrowest at the mountain portions of the uneven portions 19a. In this embodiment, the width of the gap 22 at the crest portion of the uneven portion 19a is substantially zero.

When the strip-shaped interleaving paper MP is cut using the above-described device, the strip-shaped interleaving paper MP is cut between the peaks and valleys of the uneven portion 19a of the cutter combination member 19. , a difference occurs as shown in comparison with FIGS.

As shown in FIG. 8( a ), the crest portion of the concave-convex portion 19 a is positioned upstream of the blade 18 a with respect to the pair of cut ends formed by cutting the strip MP. The cut end MPa is not bent. On the other hand, as shown in FIG. 8B, at the valley portion of the uneven portion 19a, the cut end portion MPa protruding from the uneven portion 19a to the downstream side of the conveying direction by the width of the gap 22 described above is uneven. It is bent along the portion 19a. Along with this, a crease Pf is formed at the cut edge MPa. In the portion between the crest and the valley in the uneven portion 19a, the cut end portion MPa is bent along the uneven portion 19a to form a fold line Pf in the same manner as the valley portion.

From the above, when the band-shaped interleaving paper MP is cut using the above-described device, the cut end portion that will later become the upper side protruding portion Pa of the interleaving paper P follows the wave shape (triangular wave) formed by the blade 18 a of the cutter 18 . MPa is formed in a triangular waveform. Furthermore, a crease Pf is formed at the cut edge MPa along the outline (unevenness) of the uneven portion 19 a of the cutter combination member 19 . Then, every time the band-shaped interleaving paper MP is cut once, a new interleaving paper P is cut out and manufactured.

The main actions and effects of the package 1 will be described below.

In the above-described package 1, the upper side of the upper side protruding portion Pa (inserting paper P) is formed in a corrugated shape, and the weight is lightened by the portion corresponding to the trough of the corrugation. By reducing the weight of the upper side protruding portion Pa in this way, it is possible to prevent both ends of the upper side protruding portion Pa from collapsing rearward. You can also prevent it from falling over. As a result, it is possible to avoid the occurrence of failure to take out the interleaving paper P due to the tilting of the upper edge protrusion Pa toward 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-described embodiment, the entire length of the upper side protruding portion Pa in the X direction is formed in a wavy shape, but this is not the only option. At least both ends of the upper side of the upper edge protruding portion Pa may be formed in a wavy shape. For example, only both ends may be formed in a wavy shape.

In addition, the crease Pf formed in the upper edge protruding portion Pa is not limited to the crease Pf (the crease Pf formed by the uneven portion 19a) described in the above embodiment, and an additional crease Pf may be formed. In the case of forming an additional fold line Pf, as an example, a cutter combination member 19 as shown in FIG. This cutter combination member 19 has a plurality of recessed portions 19b, and each recessed portion 19b has a ridge line 19c and a valley bottom line 19d. According to this cutter combination member 19, it is possible to additionally form fold lines Pf along the ridgeline 19c and the valley bottom line 19d as the band-shaped interleaving paper MP is cut. The crease Pf formed by the ridgeline 19c extends from a triangular wave trough formed by the upper side of the upper edge protrusion Pa, and forms a triangular wave shape when the glass sheet G is viewed from the front. Further, the fold line Pf formed by the ridgeline 19c is formed over the entire length of the upper side of the upper side protruding portion Pa. By additionally forming such a wavy fold line Pf, the stiffness of the upper side protruding portion Pa can be further strengthened over the entire length of the upper side protruding portion Pa. It should be noted that only the fold line Pf may be formed by the ridgeline 19c and/or the valley bottom line 19d without forming the fold line Pf by the uneven portion 19a.

1 glass plate package 2 pallet 3 laminate G glass plate Ga upper side of glass plate P interleaving paper (protective sheet)
Pa Overhang of top edge of interleaving paper Pf Crease of interleaving paper

Claims (3)

A glass plate package comprising 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 supporting the laminate from the rear side,
the protective sheet has a protruding upper edge protruding from the upper edge of the glass plate,
A glass plate package, wherein at least both ends of the upper side of the upper side projecting portion are formed in a corrugated shape. 2. The glass sheet package according to claim 1, wherein the entire length of the upper side of the upper side protruding portion is formed in a corrugated shape. 3. The glass sheet package according to claim 1, wherein a crease extending from the upper side of said upper edge protrusion is formed in said upper edge protrusion.

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