JP2009029472A - Glass plate package - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To decrease damage of a glass plate due to a stress concentration at both ends in a widthwise direction and prevent a load collapse of a stacked glass plates while employing a packaging form of arranging a pressing bar so that it extends over the stacked glass plates in the widthwise direction and fastening both ends of the pressing bar to hold the stacked glass plates on a pallet. <P>SOLUTION: The glass plate package 1 holds the stacked glass plates G on the pallet 2 by arranging the pressing bar 4 so that it extends over the stacked glass plates G on the pallet 2 in the widthwise direction and by fastening both the ends of the pressing bar 4 outward bulging out from both sides in the widthwise direction of the stacked glass plates G by a fastening member 5 so as to draw both ends toward the pallet 2 wherein a pressing plate 6 is placed between the pressing bar 4 and the stacked glass plates G with the pressing plate 6 contacting both of them, and the pressing plate 6 contacts the central part of the stacked glass plates G excluding both ends in the widthwise direction thereof. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a technique for improving a glass plate package in which a glass plate laminate in which a plurality of glass plates are laminated is held on a pallet.

  As is well known, when transporting various glass plates such as glass substrates for flat panel displays (hereinafter simply referred to as FPD) such as liquid crystal displays and plasma displays, a glass plate laminate formed by laminating a plurality of glass plates. Usually, it is performed in the state of the glass plate package which hold | maintained on the pallet.

  As this type of glass plate package, one that holds a plurality of glass plates stacked in a vertical position on a pallet and one that holds a plurality of glass plates stacked in a horizontal posture on a pallet It is roughly divided into

  For the former package, a pallet including a base portion and a back receiving portion standing behind the base portion is used. And after laminating a plurality of glass plates in a vertical position on the base portion so as to lean against the back support portion, by pressing and holding the front surface of the glass plate laminate toward the back support portion side, A package is produced.

  At this time, there are various methods for pressing the glass plate laminate. For example, in Patent Document 1 below, a front frame is separately provided in front of the base portion of the pallet and linked to the front frame. A method is disclosed in which a glass plate laminate is pressed against and held by a back receiving portion side by holding pieces connected via a mechanism. Further, when the posture of the front frame changes, the pressing force by the holding pieces decreases, so that the upper frame is spanned between the upper surface of the front frame and the upper surface of the back support portion, and the front frame is held in an upright state. It is like that.

  However, in such a configuration, in order to hold the glass plate laminate and press it with a piece, it is necessary to combine the front frame and the upper beam in a tower shape, so that the configuration of the package is not only complicated, but also the package This is cumbersome and complicated to manufacture. In particular, it is indispensable to make the front frame larger than the glass plate because of the relationship over the upper rail. Therefore, when the glass plate used as a packing object is large, a front frame will also be enlarged and handling property will deteriorate. In addition, in this case, since it is necessary to perform the work of attaching the upper rail at a high place, it is difficult to smoothly perform the work of attaching.

  Then, what copes with such a problem can press and hold | maintain a glass plate laminated body by the following structures. That is, the presser bar is arranged so as to straddle the width direction of the glass plate laminate laminated on the pallet, and the both ends of the presser bar protruding to the outside on both sides in the width direction of the glass plate laminate are palleted by the fastening members. The glass plate laminate is pressed and held on the pallet by being tightened so as to be pulled to the side (for example, Patent Document 2 below).

  In this way, it is not necessary to separately provide a front frame and an upper crosspiece on the pallet, and the glass plate laminate can be easily held on the pallet only by tightening the both ends of the presser bar with the tightening members. .

JP-A-7-267290 JP 2006-347592 A

  However, if the glass plate laminate is pressed and held on the pallet side by tightening both ends of the presser bar that is placed across the width direction of the glass plate laminate, stress is concentrated on both ends of the glass plate in the width direction. It's easy to do. In addition, since the presser bar itself is bent, stress is more likely to be concentrated at both ends of the glass plate. Since the edge of the glass plate is easily damaged, if it is packed with stress concentrated on the edge of the glass plate as described above due to the pressing force of the presser bar, In addition, the problem that the glass plate breaks may occur.

  Moreover, when the deflection of the presser bar is large, only the both end portions in the width direction of the glass plate laminate are held. When the package is transported in this state, there may arise a problem that the central portion in the width direction of the glass plate is deformed following the curve of the presser bar due to vibration or impact during transportation, causing load collapse. At the transportation destination, the glass plates are usually taken out from the pallet one by one by a robot equipped with a suction pad, but if the glass plate is curved as described above, There is a problem that the glass plate cannot be properly adsorbed by the pad, and the removal operation by the robot becomes substantially impossible.

  Such a problem is not limited to a case where a plurality of glass plates are stacked and packaged in a vertical posture, but can also occur when a plurality of glass plates are stacked and packaged in a horizontal posture.

  In view of the above circumstances, the present invention adopts a packing form in which a press bar is disposed so as to straddle the width direction of the glass plate laminate, and both ends of the press bar are clamped and held on the pallet, It is a technical problem to reduce the breakage of the glass plate due to the stress concentration of the part and to prevent the collapse of the glass body laminate.

  In order to solve the above problems, the present invention is arranged such that a press bar is disposed so as to straddle the width direction of the glass plate laminate laminated on the pallet, and on the outer sides of both sides of the glass plate laminate in the width direction. In the glass plate package in which the glass plate laminate is pressed and held on the pallet by tightening both ends of the clamped bar so as to be pulled toward the pallet by a clamping member, the presser bar and A pressure plate is interposed between the glass plate laminate and the glass plate laminate, and the pressure plate is brought into contact with a center portion in the width direction excluding both ends in the width direction of the glass plate laminate. It is attached.

  According to such a configuration, since the pressing plate is not in contact with both end portions in the width direction of the glass plate laminate, the pressing force by the press bar does not act on both ends in the width direction of the glass plate. For this reason, stress concentration at both ends in the width direction of the glass plate laminate is less likely to occur, and breakage of the glass plate can be effectively reduced.

  Further, since the pressing plate is in contact with the central portion in the width direction excluding both ends in the width direction of the glass plate laminate, the pressing force by the press bar acts on the central portion. Therefore, the displacement of the center part of a glass plate laminated body is controlled. Therefore, even when the package is transported, the collapse of the glass plate laminate can be reliably suppressed.

  Said structure WHEREIN: It is preferable that the part which is contacting the said press bar among the said press plates is continuing in the width direction of the said glass plate laminated body.

  If it does in this way, the width direction center part except the width direction both ends of a glass plate laminated body will be continuously pressed over the width direction. Therefore, the situation where a glass plate deform | transforms so that it may wave in the width direction like the case where the width direction center part of a glass plate laminated body is intermittently pressed to the width direction can be prevented. Therefore, breakage of the glass plate due to deformation and collapse of the load can be more reliably suppressed.

  Said structure WHEREIN: It is preferable that the said press plate has a dimension of the direction orthogonal to the width direction of the said glass plate laminated body larger than the said press bar.

  In this way, since the dimension of the press bar in the direction perpendicular to the width direction of the glass plate laminate is smaller than that of the press plate, the glass plate is more than the case where the glass plate laminate is pressed directly by the press bar. The pressing force acting on the laminate can be dispersed over a wide range in the direction orthogonal to the width direction. Therefore, deformation in the direction orthogonal to the width direction of the glass plate is suppressed, which is advantageous in preventing breakage of the glass plate and collapse of the load.

  In the above configuration, the glass plate laminate is formed by laminating a plurality of glass plates in a vertical posture, and the pallet supports a base portion that supports a lower side portion of the glass plate and a back portion of the glass plate. And a back support portion. In this case, the width direction of the glass plate laminate means a direction orthogonal to the vertical direction (height direction) of the glass plate laminate.

  Said structure WHEREIN: It is preferable that the lower end part of the said press plate is spaced apart from the base part of the said pallet.

  Generally, in a glass plate laminate in which a plurality of glass plates are laminated in a vertical posture, the lower side portion is supported by the base portion of the pallet, and the lower side portion has a small degree of freedom of deformation and movement. . For this reason, when the pressing plate is brought into contact with the lower side portion and the pressing force by the pressing bar is applied, the stress concentration due to the pressing force cannot be relieved by the deformation of the glass plate and the glass plate is likely to be damaged. Therefore, as described above, it is also possible to prevent the pressing force from acting on the lower side portion of the glass plate by separating the lower end portion of the pressing plate from the base portion from the viewpoint of preventing the glass plate from being damaged. preferable.

  In this case, on both sides of the pressing plate in the width direction, arms extending to the outside on both sides in the width direction of the glass plate laminate are provided, and the glass plate laminate is laminated on both sides of the back portion of the pallet in the width direction. A guide member that extends in the direction and supports the arm in a slidable manner may be provided, and the lower end of the pressing plate may be separated from the base of the pallet by supporting the arm with the guide member. .

  If it does in this way, it will become possible to position a press plate easily in the proper position according to the lamination number of glass plates by sliding a press plate along a guide member.

  In the above configuration, a plurality of the presser bars are arranged in the vertical direction of the glass plate laminate, and the pressing force per unit area acting on the glass plate laminate by the uppermost presser bar is set to the lowermost presser bar. Therefore, it is preferable that the pressing force per unit area acting on the glass plate laminate is smaller.

  In general, in a glass plate laminate in which a plurality of glass plates are laminated in a vertical posture, the lower side is in a state of being difficult to move because it is in contact with the base part of the pallet, whereas the upper side can move relatively freely. Is in a state. Therefore, the laminated thickness of the upper part of the glass plate laminate is more likely to change than the laminated thickness of the lower part. Therefore, when the same pressing force is applied to the upper part and the lower part of the glass plate laminate, the laminated thickness of the upper part becomes thinner than the laminated thickness of the lower part, and the laminated state becomes uneven. Cheap. And when the nonuniformity of such a lamination | stacking state arises, the upper part of a glass plate laminated body will be hold | maintained in the state pressed rather than the lower part. Therefore, if an impact that pushes up from below is applied to the package during transportation, there is no room for the glass plate to move upward, and the impact may directly act on the lower side of the glass plate and be damaged. Therefore, in order to cope with such a problem, as described above, the pressing force per unit area acting on the glass plate laminate by the uppermost presser bar is reduced by the glass plate lamination by the lowermost presser bar. It is preferable to make it smaller than the pressing force per unit area acting on the body. In this way, it is possible to reduce the situation in which the upper part of the glass plate laminate is held in a compressed state compared to the lower part, and prevent the situation in which the laminated state of the glass plate laminate is not uniform. can do. In addition, since the compressed state of the upper and lower parts of the glass plate laminate can be maintained at the same level, the glass plate temporarily escapes upward even when an impact that pushes upward during transportation is applied. The glass plate is less likely to break.

  In the above configuration, the pressing plate includes an upper pressing plate that presses the glass plate laminate by the uppermost pressing bar and a lower pressing plate that presses the glass plate stack by the lowermost pressing bar. It is preferable that the contact area between the upper pressing plate and the glass plate laminate is larger than the contact area between the lower pressing plate and the glass plate laminate.

  In this way, the contact area between the upper pressing plate and the glass plate laminate is larger than the contact area between the lower pressing plate and the glass plate laminate, so that the upper pressing plate acts on the glass plate laminate. The force is dispersed and weakened in a wider range than the pressing force acting on the glass plate laminate by the lower pressing plate. Therefore, the pressing force per unit area acting on the glass plate laminate by the uppermost pressing bar can be made smaller than the pressing force per unit area acting on the glass plate stack by the lowermost pressing bar.

  In the above configuration, the pressing plate is a single member disposed so as to straddle between the uppermost presser bar and the lowermost presser bar, and the uppermost presser of the upper part thereof. It is preferable that the protruding dimension above the bar is larger than the protruding dimension below the lowermost presser bar at the lower part. Note that the dimension of the lower part of the pressing plate that protrudes below the lowermost presser bar includes the case where the lowermost part of the pressing plate does not protrude below the presser bar, that is, when the value is zero. It is.

  If it does in this way, the pressing force which acts on a glass plate laminated body by the uppermost presser bar will spread more widely than the pressing force which acts on a glass plate laminated body by the lowest presser bar. Therefore, the pressing force per unit area acting on the glass plate laminate by the uppermost pressing bar can be made smaller than the pressing force per unit area acting on the glass plate stack by the lowermost pressing bar.

  Said structure WHEREIN: The said glass plate laminated body may laminate | stack a several glass plate in a horizontal attitude | position, and the said pallet may have a base part which supports the lower surface part of a glass plate. In this case, the width direction of the glass plate laminate means a direction orthogonal to the front-rear direction of the glass plate laminate.

  In the above configuration, the pallet is provided with a reference wall that abuts on one side located behind the glass plate, and a plurality of the press bars are arranged in the front-rear direction of the glass plate laminate, It is preferable that the pressing force per unit area acting on the glass plate laminate is made smaller than the pressing force per unit area acting on the glass plate laminate by the foremost presser bar.

  In general, when a reference wall that is in contact with one side located behind the glass plate is formed on the pallet, the side located behind the glass plate before and after transportation is also used from the viewpoint of preventing the glass plate from collapsing. It is required to be in contact with the reference wall. And according to said structure, this request | requirement can be satisfy | filled. In other words, when an impact is applied to the package during transportation, each glass plate is guided to the rear side where the pressing force per unit area is small, so one side located behind the glass plate contacts the reference wall. It becomes possible to transport in the state which made it go.

  In the above configuration, the pressing plate includes a front pressing plate that presses the glass plate laminate by the frontmost pressing bar, and a rear pressing plate that presses the glass plate stack by the last pressing bar. It is preferable that the contact area of the rear pressing plate with the glass plate laminate is larger than the contact area of the front pressing plate with the glass plate laminate.

  If it does in this way, since the contact area with the glass plate laminated body of a rear press plate becomes larger than the contact area with the glass plate laminated body of a front press plate, it acts on a glass plate laminated body with a rear press plate. The pressing force is dispersed and weakened in a wider range than the pressing force acting on the glass plate laminate by the front pressing plate. Therefore, the pressing force per unit area that acts on the glass plate laminate by the last presser bar can be made smaller than the pressing force per unit area that acts on the glass plate laminate by the frontmost presser bar.

  In the above configuration, the pressing plate is a single member arranged so as to straddle between the foremost presser bar and the rearmost presser bar, and the rearmost presser of the rear part thereof. It is preferable that the protruding dimension to the rear of the bar is larger than the protruding dimension to the front of the foremost presser bar at the front part. It should be noted that the front projecting dimension of the front part of the pressing plate to the front of the presser bar is the case where the front part of the pressing plate does not project out of the front of the presser bar, that is, the value is zero. It is also included.

  If it does in this way, the pressing force which acts on a glass plate laminated body by the last presser bar will spread over a wider range than the pressing force which acts on a glass plate laminated body by the foremost presser bar. Therefore, the pressing force per unit area that acts on the glass plate laminate by the last presser bar can be made smaller than the pressing force per unit area that acts on the glass plate laminate by the frontmost presser bar.

  Said structure WHEREIN: It is preferable that the said glass plate laminated body arrange | positions a buffer plate on the surface of the side pressed by the said press member.

  As described above, according to the present invention, since the pressing plate is not in contact with both ends in the width direction of the glass plate laminate, the pressing force by the pressing bar does not act on both ends in the width direction of the glass plate. Therefore, stress concentration at both ends in the width direction of the glass plate laminate is unlikely to occur, and damage to the glass plate can be effectively reduced. On the other hand, since the pressing plate is in contact with the central portion in the width direction excluding both ends in the width direction of the glass plate laminate, the pressing force by the presser bar concentrates on the central portion in the width direction of the glass plate laminate. To do. Therefore, as a result of the displacement of the central portion in the width direction of the glass plate laminate being restricted, it is possible to reliably suppress a situation in which a load collapse occurs in the glass plate laminate.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a perspective view schematically showing a glass plate package according to the first embodiment of the present invention, and FIG. 2 is a plan view thereof. As shown in these drawings, the glass plate package 1 is obtained by laminating a plurality of glass plates in a vertical posture on a pallet 2 and holding the glass plate laminate G on the pallet 2.

  The pallet 2 includes a base portion 2a that supports the lower side portion of the glass plate, and a back support portion 2b that stands up behind the base portion 2a and supports the back surface of the glass plate. Then, the lower side portions of the plurality of glass plates are placed on the base portion 2a, and the rear surface portion of the rearmost glass plate is leaned against the back support portion 2b, whereby the plurality of glass plates are placed in the pallet 2 in a vertical posture. Laminated on top. In the glass plate laminate G, a foamed resin sheet is interposed between the glass plates, and a buffer plate 3 formed of, for example, plastic corrugated cardboard is leaned on the front surface of the leading glass plate. Although not shown, a buffer material is laid on the portion where the glass plate laminate G is in contact with the pallet 2.

  And on the forefront surface (buffer plate 3) of the glass plate laminate G, two presser bars 4 are arranged at intervals in the vertical direction so as to straddle the width direction. In this state, both end portions of each presser bar 4 protruding to the outside on both sides in the width direction of the glass plate laminate G are tightened by the tightening member 5 so as to be drawn toward the back support portion 2b.

  Although the configuration of the fastening member 5 is not particularly limited, in this embodiment, as shown in FIG. 3, the rack 5 a extending in the glass plate stacking direction from both sides of the back support portion 2 b and the presser bar 4 A pinion 5b built in both ends is provided as a main configuration. The presser bar 4 is fixed to the rack 5a by engaging the pinion 5b with the rack 5a. Further, in a state where the engagement between the pinion 5b and the rack 5a is released, the presser bar 4 is slidably supported with respect to the rack 5a. The pinion 5b is connected to the first crankshaft 5c. The first crankshaft 5c is urged in the left direction in the figure by a spring 5e attached to the second crankshaft 5d whose movement is restricted when the pinion 5b and the rack 5a are engaged with each other. Thereby, in a state where the pinion 5b and the rack 5a are engaged with each other, the pinion 5b is biased by the spring 5e in a direction in which the engagement with the rack 5a proceeds (counterclockwise in the drawing).

  As shown in FIGS. 1 and 2, a pressing plate 6 is interposed between the presser bar 4 and the glass plate laminate G. The pressing plate 6 is in contact with both the presser bar 4 and the glass plate laminate G, and the contact area is continuous at the center in the width direction excluding both ends in the width direction of the glass plate laminate G. That is, the center portion in the width direction of the presser bar 4 is in a state of protruding to the glass plate laminate G side by the press plate 6. Therefore, a gap corresponding to the thickness of the press plate 6 is formed between the press bar 4 and both ends in the width direction of the glass plate laminate G, and the pressing force by the press bar 4 is applied to the glass plate laminate. It does not act on both ends in the width direction of the body G. On the other hand, since the pressing plate 6 is continuously in contact with the width direction center portion of the glass plate laminate G in the width direction, the pressing force by the presser bar 4 is applied to the width direction center portion of the glass plate stack G. It is designed to work intensively.

  Thereby, it becomes possible to hold | maintain the glass plate laminated body G on the pallet 2 without concentrating stress on the both ends of the glass plate laminated body G in the width direction. Therefore, it is possible to effectively reduce the situation where stress concentrates on both ends in the width direction of the glass plate laminate G and the glass plate is broken. Moreover, since the pressing force by the presser bar 4 continuously acts on the central portion in the width direction of the glass plate laminate G via the pressing plate 6, such as bending in the central portion in the width direction of the glass plate laminate G. Deformation is regulated. For this reason, it is possible to effectively reduce the situation in which the glass plate laminate G collapses due to vibration during transportation or the like.

  The thickness of the pressing plate 6 is preferably 5 mm or more and 40 mm or less, and more preferably 10 mm or more and 30 mm or less. Moreover, the width direction dimension of the pressing plate 6 is at least 1/3 of the width direction dimension of the glass plate laminate G, and at the maximum, both ends in the width direction of the pressing plate 6 are 50 mm inside from both ends in the width direction of the glass plate stack G. It is preferable to set to the range located in the range, more preferably 1/2 or more and 2/3 or less of the width-direction dimension of the glass plate laminate G. Further, the pressing plate 6 may be a separate body from the presser bar 4, but is integrated with the presser bar 4 in this embodiment.

  FIG. 4 is a perspective view showing a glass plate package according to the second embodiment of the present invention, and FIG. 5 is a side view thereof. As shown in these figures, the glass plate package 1 according to the second embodiment is different from the glass plate package 1 according to the first embodiment described above, of the two upper and lower presser bars 4. The pressing force per unit area acting on the glass plate laminate G by the upper presser bar 4 is smaller than the pressing force per unit area acting on the glass plate laminate G by the lower presser bar 4.

  In general, in the glass plate laminate G in which a plurality of glass plates are laminated in a vertical posture, the lower side portion is in a state of being difficult to move because it is in contact with the base portion 2a of the pallet 2, whereas the upper side portion is relatively It is in a state where it can move freely. Therefore, the laminated thickness of the upper part of the glass plate laminate G is more likely to change than the laminated thickness of the lower part. Therefore, when the same pressing force is applied to the upper part and the lower part of the glass plate laminate G, the upper part is thinner than the lower part, and the laminated state is not uniform. Prone. And when such a nonuniformity of a lamination state arises, the upper part of the glass plate laminated body G will be hold | maintained in the state pressed rather than the lower part. Therefore, if an impact that pushes up from below is applied to the glass plate package 1 during transportation, there is no room for the glass plate to move upward, and the impact may directly act on the lower side of the glass plate and be damaged.

  Therefore, in order to cope with such a problem, the pressing force per unit area acting on the glass plate laminate G by the upper presser bar 4 of the upper and lower presser bars 4 is reduced by the lower presser bar 4. It is preferable to make it smaller than the pressing force per unit area that acts on the glass plate laminate G. If it does in this way, the situation where the upper part of glass board laminated body G is held in the state where it was pressed compared with the lower part can be reduced, and the situation where the lamination state of glass board laminated body G becomes uneven Can be prevented. In addition, since the compressed state of the upper part and the lower part of the glass plate laminate G can be maintained at the same level, even if an impact that pushes up from below is applied to the package 1 during transportation, the glass plate Temporarily escapes upward, making it difficult to break the glass plate.

  More specifically, in this embodiment, as shown in FIGS. 4 and 5, the contact area of the pressing plate 6 that presses the glass plate stack G with the upper presser bar 4 with the glass plate stack G is lower. The pressing plate 6 that presses the glass plate laminate G by the presser bar 4 is larger than the contact area with the glass plate laminate G. Therefore, the pressing force acting on the glass plate laminate G by the upper presser bar 4 is dispersed in a wider range than the pressing force acting on the glass plate laminate G by the lower presser bar 4. As a result, the pressing force per unit area acting on the glass plate laminate G by the upper presser bar 4 is made smaller than the pressing force per unit area acting on the glass plate laminate G by the lower presser bar 4. It is possible to enjoy the above-described effects.

  In addition, as shown in FIG. 2, the force of the spring 5e that urges the pinion 5b in the direction in which the engagement with the rack 5a proceeds is increased by the presser bar 4 below the presser bar 4 above. You may make it provide the above difference in the pressing force per unit area which acts on the glass plate laminated body G by the presser bar 4. FIG.

  FIG. 6 is a perspective view showing a glass plate package according to a third embodiment of the present invention. As shown in the figure, the glass plate package 1 according to the third embodiment is different from the glass plate package 1 according to the first and second embodiments described above by the upper and lower presser bars 4. The point is that a single pressing plate 6 is pressed.

  More specifically, the pressing plate 6 is constituted by a flat plate that is continuous without a gap, and is arranged so as to straddle the lower pressing bar 4 from the upper pressing bar 4. The pressing plate 6 is smaller than the glass plate and is not in contact with the peripheral edge of the glass plate. In this way, the pressing force by the presser bar 4 acts not only in the width direction of the glass plate laminate G but also in the vertical direction perpendicular to the width direction. Therefore, the glass plate becomes more difficult to be deformed, which is advantageous in suppressing breakage and load collapse.

  From the viewpoint of weight reduction, the pressing plate 6 may be constituted by a lattice plate as shown in FIGS. 7 (a) and 7 (b). In this case, as shown in FIG. 7 (b), the lattice bone 6a is arranged in the width direction at the place where the presser bar 4 is arranged in the presser plate 6, and the pressing force by the presser bar 4 is the glass plate. It acts continuously in the width direction of the laminate G.

  Further, as described in the second embodiment, the pressing force per unit area acting on the glass plate laminate G by the upper presser bar 4 of the upper and lower presser bars 4 is reduced by the lower presser bar 4. From the viewpoint of reducing the pressing force per unit area acting on the plate laminate G, it is preferable to do the following. That is, as shown in FIG. 6 and FIG. 7B, by deviating the vertical center position of the pressing plate 6 from the vertical center position between the two upper and lower pressing bars 4, It is preferable that the dimension in which the upper part protrudes upward from the upper presser bar 4 is larger than the dimension in which the lower part of the pressing plate 6 protrudes downward from the lower presser bar 4.

  If it does in this way, the pressing force which acts on the glass plate laminated body G by the upper presser bar 4 will be distributed and weakened more widely than the pressing force which acts on the glass plate laminated body G by the lower presser bar 4. Therefore, the pressing force per unit area acting on the glass plate laminate G by the upper presser bar 4 may be made smaller than the pressing force per unit area acting on the glass plate laminate G by the lower presser bar 4. it can.

  8 (a) and 8 (b) are perspective views showing a glass plate package according to the fourth embodiment of the present invention. As shown in the figure, the glass plate package 1 according to the fourth embodiment is different from the glass plate package 1 according to the first to third embodiments described above in that the outer sides of the pressing plate 6 on both sides in the width direction. The pressing plate 6 is supported in a state of being separated from the base portion 2 a of the pallet 2 by hooking the arm 7 extending to the rack 5 a provided on the pallet 2. In this embodiment, the rack 5 a that supports the presser bar 4 also serves as a guide member that supports the pressing plate 6.

  In this manner, the pressing plate 6 is placed at an appropriate position according to the number of laminated glass plates by sliding the arm 7 of the pressing plate 6 on the rack 5a along the longitudinal direction of the rack 5a. Positioning can be easily performed.

  Further, a claw 7a extending downward is provided at the tip of the arm 7, and this claw 7a engages with the outer surface of the rack 5a so that displacement of the pressing plate 6 in the width direction is restricted. It has become.

  In the illustrated example, of the upper and lower presser bars 4, the arm 7 of the presser plate 6 is hooked on the rack 5a that supports the lower presser bar 4, and the presser plate 6 is supported. The pressing plate 6 may be supported by hooking the arm 7 of the pressing plate 6 on the rack 5 a that supports the bar 4. Alternatively, the pressing plate 6 may be supported by hooking the arms 7 on the upper and lower racks 5a.

  In this case, it is preferable that the arm 7 is not in contact with both end portions in the width direction of the glass plate laminate G. This is to prevent a pressing force from acting on both ends in the width direction of the glass plate laminate G by the arm 7. Specifically, for example, as shown in FIG. 9A, the thickness of the arm 7 is made thinner than the thickness of the pressing plate 6 to be separated from the glass plate laminate G, or as shown in FIG. 9B. As described above, the arm 7 is attached to the front side of the pressing plate 6 and is separated from the glass plate laminate G.

  Further, as shown in FIGS. 10A and 10B, a leg portion 8 extending downward is attached to the lower end portion of the pressing plate 6, and the lower end portion of the pressing plate 6 is separated from the base portion 2 a of the pallet 2. You may do it. Also in this case, it is preferable that the leg portion 8 is not in contact with the glass plate laminate G. Specifically, for example, as shown in FIG. 11 (a), the thickness of the leg portion 8 is made thinner than the thickness of the pressing plate 6 to be separated from the glass plate laminate G, or FIG. As shown in FIG. 4, the leg portion 8 is attached to the front side of the pressing plate 6 and is separated from the glass plate laminate G.

  FIG. 12 is a perspective view showing a glass plate package according to the fifth embodiment of the present invention. The glass plate package 1 according to the fifth embodiment is different from the glass plate package 1 according to the first to fourth embodiments described above in that the fastening member 5 is constituted by a belt.

  More specifically, an intermediate portion of the belt 5 having both ends fixed to the back support portion 2b is stretched over the presser bar 4 disposed so as to straddle the width direction of the glass plate laminate G. In this state, the belt 5, both ends of the presser bar 4 are tightened so as to be pulled toward the back support 2b. As the belt 5, a ratchet type lashing belt can be preferably used.

  Further, as shown in FIG. 13, the belt 5 is stretched between both ends of the presser bar 4 and the back support 2b, and the both ends of the presser bar 4 are tightened so as to be pulled toward the back support 2b. It may be.

  Further, as shown in FIG. 14, the belt 5 is spanned from the both ends of the presser bar 4 to the back surface of the back support portion 2 b and tightened on the back surface of the back support portion 2, whereby the both ends of the presser bar 4 are received by the back support. You may make it draw in to the part 2b side.

  FIG. 15: is a perspective view which shows the glass plate package which concerns on 6th Embodiment of this invention, and FIG. 16 is the top view. As shown in these drawings, the glass plate package 1 according to the sixth embodiment is different from the glass plate package 1 according to the first to fifth embodiments described above. A plurality of glass plates are laminated on the base portion 2a of the pallet 2 in a horizontal posture.

  That is, the matters described in the first to fifth embodiments can be similarly applied to a case where a plurality of glass plates are stacked in a horizontal posture and packed. However, in this case, it is necessary to consider the vibration during transportation and the lateral displacement of the glass plate due to shaking. Therefore, when packing the glass plate laminate G laminated in the horizontal posture, as shown in FIGS. 15 and 16, the reference wall 2c that comes into contact with one side located behind the glass plates laminated in the horizontal posture. May be provided on the pallet 2. In this case, also from the viewpoint of preventing the collapse of the glass plate laminate G, it is necessary to make the side on the rear side of the glass plate contact the reference wall 2c before and after transportation. .

  So, in the glass plate package 1 which concerns on this embodiment, the pressing per unit area which acts on a glass plate laminated body by the back presser bar 4 among the two presser bars 4 arrange | positioned at intervals in the front-back direction. The force is smaller than the pressing force per unit area acting on the glass plate laminate G by the front presser bar 4. Specifically, the contact area of the pressing plate 6 that presses the glass plate stack G with the rear presser bar 4 with the glass plate stack G is the pressing plate that presses the glass plate stack G with the front presser bar 4. 6 is larger than the contact area with the glass plate laminate G.

  If it does in this way, even if it is a case where an impact is added to the glass plate package 1 at the time of transportation, each glass plate is guided to the rear side where the pressing force per unit area is small. Therefore, it becomes possible to transport in a state where one side located behind the glass plate is in contact with the reference wall 2c.

  As shown in FIGS. 17 and 18, when the single pressing plate 6 is pressed by the two front and rear press bars 4, the center position of the pressing plate 6 in the front and rear direction is set between the two front and rear press bars 4. By biasing backward from the center position in the front-rear direction, the dimension in which the rear part of the pressing plate 6 protrudes rearward from the rear presser bar 4, and the front part of the pressing plate 6 eats forward from the front presser bar 4. It may be made larger than the protruding dimension. And when the press plate 6 is comprised with a lattice plate like the example of illustration, the lattice bone 6a is arrange | positioned in the location where the press bar 4 is arrange | positioned, and the pressing force by the press bar 4 is the glass plate laminated body G. It is designed to act continuously in the width direction.

  In this way, the pressing force acting on the glass plate laminate G by the rear presser bar 4 is more widely dispersed than the pressing force acting on the glass plate laminate G by the front presser bar 4, so The pressing force per unit area acting on the glass plate laminate by the presser bar 4 can be made smaller than the pressing force per unit area acting on the glass plate laminate G by the front presser bar 4.

  Further, as shown in FIG. 2, the force of the spring 5 e that urges the pinion 5 b in the direction in which the engagement with the rack 5 a advances is increased by the front presser bar 4 rather than the rear presser bar 4. You may make it provide the above difference in the pressing force per unit area which acts on the glass-plate laminated body G by the presser bar 4 of this.

  In order to recognize whether or not the present invention achieves the intended purpose, the following tests and examinations were conducted.

  As Example 1 of the form which packs a glass plate with the vertical attitude | position of this invention, while producing 50 glass plate packing bodies 1 of the form shown in the above-mentioned FIG.1 and FIG.2, about 100 km of highways of about 300 km each way It went back and forth at / h, and confirmed the breakage of the glass plate after transportation and the change in the laminated thickness of the glass plate before and after transportation. In addition, the glass substrate for liquid crystal displays whose width direction dimension is 2250 mm, the vertical direction dimension is 1950 mm, and thickness is 0.7 mm was used as a glass plate. And 200 sheets of this glass plate were laminated | stacked by the vertical attitude | position, and each glass plate package 1 was manufactured. Further, as the presser bar 4, a stainless steel square pipe having a width dimension of 2538 mm, a vertical dimension of 80 mm, and a thickness of 40 mm was used. Furthermore, a stainless steel square pipe having a width dimension of 1500 mm, a vertical dimension of 80 mm, and a thickness of 20 mm was used as the pressing plate 6, and the pressing plate 6 was joined to the presser bar 4 and integrated.

  As a result, the number of broken sheets after transportation of 10,000 (50 × 200) glass plates was zero, and a very good result was obtained. In addition, the maximum drop change amount of the laminated thickness of the glass plate was 6 mm on average, and the maximum drop was 9 mm (drop 2 mm before transportation + 7 mm drop change after transportation). Here, the maximum drop means a stacking thickness difference (difference between the maximum thickness dimension and the minimum thickness dimension) from the foremost part to the rearmost part in the stacking direction of one glass sheet laminate G, and generally the glass sheet collapses. If the maximum drop of the laminated thickness exceeds 15 mm, the robot having the suction pad cannot automatically take out the glass plate from the pallet 2. Therefore, the result that the maximum drop is 9 mm is satisfactory without any practical problem.

  As Example 2 of the present invention, 50 glass plate packages 1 having the form shown in FIGS. 4 and 5 were manufactured. A stainless steel square pipe having a width dimension of 1500 mm, a vertical dimension of 80 mm, and a thickness of 20 mm was joined to the lower presser bar 4 as the pressing plate 6. Further, a stainless steel square pipe having a width dimension of 2150 mm, a vertical dimension of 160 mm, and a thickness of 20 mm was joined to the upper presser bar 4 as the pressing plate 6. The other conditions are the same as in the first embodiment.

  As a result, the number of broken sheets after transportation of 10,000 (50 × 200) glass plates was zero, and a very good result was obtained. Further, the maximum drop change amount of the laminated thickness of the glass plates was 4 mm on average, and the maximum drop was 7 mm (drop 2 mm before transportation + 5 mm drop change after transportation). Therefore, the maximum head was 15 mm or less, which is an allowable range, and the results were even better than Example 1.

  As Example 3 of the present invention, 50 glass plate packages 1 having the form shown in FIG. The pressing plate 6 is a square pipe having a cross section of 40 mm × 20 mm, combined in a lattice shape with a framework, the thickness is 20 mm, the width direction dimension is 1500 mm which is 2/3 of the width direction dimension of the glass plate, and the upper presser bar 4 The upper part protruded 350 mm. Further, in the frame of the pressing plate 6, a lattice bone 6 a having the same vertical dimension 80 mm as the pressing bar 4 is disposed at a position where the pressing bar 4 is disposed, and the pressing bar 4 and the pressing plate 6 are arranged in the width direction. The contact was made continuously. Other conditions are the same as those in the first embodiment.

  As a result, the number of broken sheets after transportation of 10,000 (50 × 200) glass plates was zero, and a very good result was obtained. In addition, the maximum drop change amount of the laminated thickness of the glass plate was 2 mm on average, and the maximum drop was 5 mm (drop 2 mm before transport + drop change 3 mm after transport). Therefore, the maximum drop was 15 mm or less, which is an allowable range, and the result was better than that of Example 2.

  As Example 4 of the present invention, 50 glass plate packages 1 having the form shown in FIG. 10B were manufactured. As the pressing plate 6, the same one as in Example 4 described above was used, and a leg portion 8 was attached instead of the arm 7. Other conditions are the same as in the first embodiment.

  As a result, the number of broken sheets after transportation of 10,000 (50 × 200) glass plates was zero, and a very good result was obtained. In addition, the maximum drop change amount of the laminated thickness of the glass plates after transportation was 2 mm on average, and the maximum drop was 6 mm (head drop 2 mm before transport + head drop change 4 mm after transport). Therefore, the maximum drop was 15 mm or less, which is an allowable range, and the result was better than that of Example 2.

  As Comparative Example 1 of Examples 1 to 4, the pressure plate 6 in Example 1 was removed, and 50 glass plate packages in which the glass plate laminate was directly pressed by the presser bar 4 were manufactured. Other conditions are the same as in the first embodiment.

  As a result, the number of damaged sheets after transportation of 10,000 (50 × 200) glass plates was generated. In detail, two were damaged starting from the lower side of the glass plate, and two were damaged starting from both ends in the width direction of the glass plate. On the other hand, the maximum drop change amount of the laminated thickness of the glass plate after transportation was 17 mm on average, and the maximum drop was 20 mm (head drop 2 mm before transport + head drop change after transport 18 mm). Therefore, the maximum head exceeded the allowable range of 15 mm.

  As Example 5 of the form which packs a glass plate with the horizontal attitude | position of this invention, 50 glass plate packing bodies 1 of the form shown in the above-mentioned FIG.17 and FIG.18 were manufactured. Each glass plate package 1 was manufactured by laminating 200 glass plates similar to the above in a horizontal posture. As the pressing plate 6, the same one as in Examples 3 and 4 was used, and the rear part thereof protruded 350 mm from the rear pressing bar 4 to the reference wall 2 c side. The other conditions are the same as in Example 1.

  As a result, the number of broken sheets after transportation of 10,000 (50 × 200) glass plates was zero, and a very good result was obtained. In addition, the maximum drop change amount of the laminated thickness of the glass plates after transportation was 2 mm on average, and the maximum drop was 4 mm (head drop 2 mm before transport + head drop change 2 mm after transport). Therefore, a satisfactory result was obtained in which the maximum head was 15 mm or less, which is an allowable range.

  As Comparative Example 2 of Example 5, the pressure plate 6 was removed in Example 5, and 50 glass plate packages in which the glass plate laminate G was directly pressed by the presser bar 4 were manufactured. The other conditions are the same as in Example 5.

  As a result, the number of damaged glass plates after transportation of 10,000 (50 × 200) glass plates was two. Specifically, the two damaged glass plates were both damaged starting from both ends in the width direction of the glass plate. On the other hand, the maximum drop change amount of the laminated thickness of the glass plates after transport was 13 mm on average, and the maximum drop was 16 mm (head drop before transport + head drop change after transport of 14 mm). Regarding the lateral displacement of the glass plate, the entire glass plate after transportation moved in a direction away from the reference wall 2c by about 20 mm. Therefore, the maximum head exceeded the allowable range of 15 mm, and the glass plate was laterally displaced and damaged.

It is a perspective view which shows the glass plate package which concerns on 1st Embodiment of this invention. It is a top view of the glass plate package shown in FIG. It is sectional drawing of the clamping member shown in FIG. It is a perspective view which shows the glass plate package which concerns on 2nd Embodiment of this invention. It is a side view of the glass plate package shown in FIG. It is a perspective view which shows the glass plate package which concerns on 3rd Embodiment of this invention. (A) is a perspective view which shows the modification of the glass plate package which concerns on 3rd Embodiment, (b) is the components disassembled arrangement perspective view. (A) is a perspective view which shows the glass plate package which concerns on 4th Embodiment of this invention, Comprising: (b) is the components decomposition | disassembly arrangement | sequence perspective view. (A) is an enlarged view which shows the connection part of a press plate and an arm shown in FIG. 8, Comprising: (b) is an enlarged view which shows the modification. It is a perspective view which shows the modification of the glass plate package which concerns on 4th Embodiment. (A) is an enlarged view which shows the connection part of a press plate and a leg part shown in FIG. 10, (b) is an enlarged view which shows the modification. It is a perspective view which shows the glass plate package which concerns on 5th Embodiment of this invention. It is a perspective view which shows the modification of the glass plate package which concerns on 5th Embodiment. It is a perspective view which shows the modification of the glass plate package which concerns on 5th Embodiment. It is a perspective view which shows the glass plate package which concerns on 6th Embodiment of this invention. It is a top view of the glass plate package shown in FIG. It is a perspective view which shows the modification of the glass plate package which concerns on 6th Embodiment. It is a top view of the glass plate package shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Glass plate package 2 Pallet 2a Base 2b Back support 2c Reference wall 3 Buffer plate 4 Presser bar 5 Fastening member 6 Press plate 7 Arm 8 Leg G Glass plate laminate

Claims (14)

The presser bar is arranged so as to straddle the width direction of the glass plate laminate laminated on the pallet, and both ends of the presser bar protruding to the outside on both sides in the width direction of the glass plate laminate are clamped By tightening the pallet so as to pull it in, the glass plate package that holds the glass plate laminate pressed against the pallet,
A pressure plate is interposed between the presser bar and the glass plate laminate in contact with both, and the pressure plate is in contact with the center in the width direction excluding both widthwise ends of the glass plate laminate. A glass plate package characterized by having been made.   The glass plate package according to claim 1, wherein a portion of the pressing plate that is in contact with the presser bar is continuous in the width direction of the glass plate laminate.   3. The glass plate package according to claim 1, wherein the pressing plate has a size in a direction orthogonal to the width direction of the glass plate laminate, which is larger than the presser bar.   The glass plate laminate is formed by laminating a plurality of glass plates in a vertical posture, and the pallet includes a base portion that supports a lower side portion of the glass plate, and a back support portion that supports a back surface portion of the glass plate. The glass plate package according to any one of claims 1 to 3, wherein   The lower end part of the said press plate is spaced apart from the base part of the said pallet, The glass plate package of Claim 4 characterized by the above-mentioned.   Arms that extend outward on both sides in the width direction of the glass plate laminate are provided on both sides in the width direction of the pressing plate, and extend in the stacking direction of the glass plate laminate on both sides in the width direction of the back portion of the pallet. A guide member that slidably supports the arm is provided, and the lower end portion of the pressing plate is separated from the base portion of the pallet by supporting the arm with the guide member. 5. The glass plate package according to 5.   A plurality of the presser bars are arranged in the vertical direction of the glass plate laminate, and the pressing force per unit area that acts on the glass plate laminate by the uppermost presser bar is reduced by the lowermost presser bar. The glass plate package according to any one of claims 4 to 6, wherein the pressing force per unit area acting on the body is smaller.   The pressing plate is at least separated into an upper pressing plate that presses the glass plate laminate by the uppermost pressing bar and a lower pressing plate that presses the glass plate stack by the lowermost pressing bar. The glass plate package according to claim 7, wherein a contact area between the upper pressing plate and the glass plate laminate is larger than a contact area between the lower pressing plate and the glass plate laminate.   The pressing plate is a single member arranged so as to straddle between the uppermost presser bar and the lowermost presser bar, and an upper portion of the upper pressing bar above the uppermost presser bar. 8. The glass plate package according to claim 7, wherein a protruding dimension is larger than a protruding dimension of the lower part below the lowermost presser bar.   The glass plate laminate is formed by laminating a plurality of glass plates in a horizontal posture, and the pallet has a base portion that supports a lower surface portion of the glass plate. The glass plate package of crab.   The pallet is provided with a reference wall that comes into contact with one side located behind the glass plate, and a plurality of the press bars are arranged in the front-rear direction of the glass plate laminate, and the glass plate laminate is formed by the last press bar. 11. The glass plate package according to claim 10, wherein the pressing force per unit area to be applied is smaller than the pressing force per unit area that is applied to the glass plate laminate by the front-most presser bar.   The pressing plate is at least separated into a front pressing plate that presses the glass plate laminate by the front-most pressing bar and a rear pressing plate that presses the glass plate stack by the rearmost pressing bar. The contact area with the said glass plate laminated body of the said rear part press plate is larger than the contact area with the said glass plate laminated body of the said front press plate, The glass plate packing of Claim 11 characterized by the above-mentioned. body.   The pressing plate is a single member arranged so as to straddle between the foremost presser bar and the rearmost presser bar. 12. The glass plate package according to claim 11, wherein a protruding dimension is larger than a protruding dimension of the front part to the front of the foremost presser bar.   The said glass plate laminated body has arrange | positioned a buffer plate on the surface of the side pressed by the said press member, The glass plate package in any one of Claims 1-13 characterized by the above-mentioned.

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