JP2008247485A - Production method of cushioning body for packaging - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a production method for a cushioning body for packaging which is automatically assembled by a machine and is completely recycled. <P>SOLUTION: A plurality of cutting lines 11-21 are formed almost in parallel with each other in a direction orthogonal to the extending direction of the corrugation of a corrugated cardboard 10 and a plurality of connecting parts 25 are respectively intermittently formed at the cutting lines 11-21, and accordingly a plurality of cardboard plates 41-52 are made to be foldable with each other. Such corrugated cardboard 10 is inserted between upper and lower folding plates 77, 78, and one of these folding plates 77, 78 is moved to approach the other, and the corrugated cardboard 10 is alternately mountain folded and valley folded at the cutting lines 11-21. Glue paste is coated on the joining faces of the cardboard plates 41-52 with gluing nozzles 82, 83, and the cardboard plates 41-52 are superposed by pressing the cardboard plates 41-52 with a pressing cylinder 87 so that the cushioning body for packing formed of the corrugated cardboard is assembled by joining them with each other. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a method for manufacturing a packaging buffer, and more particularly to a method for manufacturing a packaging buffer suitable for automatically assembling a packaging buffer used to protect an article to be distributed from impact. .

  When delivering goods that are easily damaged by external impacts, such as precision equipment, to store the precision equipment in a cardboard case, a foamed polystyrene resin buffer is placed between the precision equipment and the cardboard case. I try to arrange my body. When an impact is applied from the outside, the impact is absorbed by the foamed resin cushion interposed between the corrugated cardboard case and the precision instrument, so that the impact may be directly transmitted to the precision instrument. This protects the precision instrument from impact.

  Although the foamed polystyrene buffer has a high impact absorption capability, it requires a mold for foam molding, and it is necessary to prepare a mold corresponding to each shape in advance. Accordingly, the cost of the molded body increases due to the mold. In addition, the shock absorber made of the expanded polystyrene resin is not only bulky, but also generates black smoke when discarded and incinerated, and may generate high heat and damage the furnace.

Therefore, a shock absorber using cardboard has been proposed. For example, while assembling a cylinder with corrugated cardboard punched into a predetermined shape, the joint of this cylinder is locked with a wire. Then, a feather core and a pad punched by the corrugated cardboard are assembled in the cylinder assembled by the corrugated cardboard, thereby assembling a cushioning body having a predetermined buffering effect.
Japanese Patent Application Laid-Open No. 08-034477 Japanese Patent Laid-Open No. 08-252879 CD-ROM of Japanese Utility Model Publication No. 07-040537

  A conventional cushioning body using such cardboard requires a plurality of members each punched with cardboard, and is configured by combining them with each other. Here, since the structure is complicated, automatic assembly cannot be performed, and there is a problem that assembly must be performed manually, which increases the processing cost. In addition, since the joint portion of the outer cylindrical body is locked by a steel wire, it is necessary to separate this wire when it is recycled. Therefore, the structure is inappropriate for recycling. .

  The present invention has been made in view of such a problem, and is assembled by a single member without using a plurality of members separated from each other, and has a simple structure and enables automatic assembly. Another object of the present invention is to provide a manufacturing method for assembling a packaging buffer that can be recycled without using any metal or the like.

The main invention of the present application is to divide a single continuous corrugated cardboard into a plurality of corrugated board boards through a cutting line by die cutting, and intermittently connecting portions are formed in the cutting line,
The single continuous cardboard is inserted between the upper folding plate and the lower folding plate, and one of the upper folding plate and the lower folding plate is close to the other. Thus, the single continuous corrugated board is alternately folded into a mountain fold and a valley fold at the cutting line, and the corrugated board is alternately folded in the opposite direction with the width of the corrugated board. The present invention relates to a method for manufacturing a packaging shock absorber.

  Here, the width | variety of the several cardboard board divided | segmented by a cutting line may be the same. The cutting line may be formed extending in a direction perpendicular to the direction of the corrugated board. A pair of short cuts may be formed in parallel to each other in a direction perpendicular to the cutting line, and the connecting portion may be formed so as to divide the cutting line in a region between the pair of cuts.

  In addition, before the plurality of corrugated cardboard plates bent alternately in opposite directions are superposed, an adhesive paste may be applied to the joining surfaces of the corrugated cardboard plates. Further, after the cardboard is folded by the upper folding plate and the lower folding plate, the upper folding plate and the lower folding plate are opened, and the folded cardboard Is pushed in the direction of the cutting line and moved to the overlapping position, adhesive glue is supplied from the gluing nozzles arranged above and below, and the adhesive glue is applied to the joining surfaces of the plurality of cardboard plates It's okay. The adhesive paste may be a glue paste.

  Further, when the corrugated board which is bent and the adhesive paste is applied to each corrugated board is moved to the overlapping position, it is pressed by the pressing means in a direction perpendicular to the moving direction and perpendicular to the cutting line. The plurality of cardboard plates may be joined to each other. The folded cardboard may be pressed against a closed shutter plate when pressed by the pressing means. A corrugated board in which the plurality of corrugated boards are joined to each other is supplied to the lower side of the presser cylinder, and the end face along the cutting line of the corrugated board is formed by the presser plate attached to the tip of the piston rod of the presser cylinder. You may shape so that it may be pressed and the unevenness | corrugation of this end surface may be eliminated. Further, the folded corrugated cardboard may be supplied to the lower side of the presser cylinder by operating the pressing means after the shutter plate is opened.

  In a preferred embodiment of the present invention, a die-cut single cardboard is automatically folded by a machine and bonded by glue glue or the like to assemble a buffer body. It is divided into a plurality of cardboards by a plurality of cutting lines, and a connecting part is intermittently formed in the cutting line, and the part of the cutting line in which such a connecting part is formed is alternately mountain-folded and valley-folded. The shock absorber is assembled by performing the above steps, and is a shock absorber characterized by being assembled by a single cardboard.

  The main invention of the present application is to divide a single continuous corrugated cardboard into a plurality of corrugated board boards through a cutting line by die cutting, and a connecting portion is intermittently formed in the cutting line, and a single continuous The corrugated cardboard is inserted between the upper folding plate and the lower folding plate, and one of the upper folding plate and the lower folding plate moves closer to the other, thereby A single continuous corrugated cardboard is alternately folded into a mountain fold and a valley fold at the cutting line so that the corrugated cardboard is alternately folded in the opposite direction with the width of the corrugated board.

  Therefore, according to such a manufacturing method for packaging shock absorbers, it is possible to assemble the shock absorbers simply by folding a single continuous cardboard, and automatic assembly by a machine becomes possible, thereby greatly saving labor. And reducing costs. Further, according to the structure in which a plurality of cardboard plates are alternately bent and joined in the opposite direction, the buffer body is constituted only by the cardboard, and the buffer body can be assembled without using metal or the like. Therefore, a packaging buffer that can be completely recycled is provided.

  1 and 2 show a cardboard 10 for assembling a shock absorber according to an embodiment of the present invention. In this cardboard 10, eleven cutting lines 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, and 21 are formed substantially parallel to each other in a direction perpendicular to the direction of the steps. The corrugated board 10 is divided into twelve corrugated boards 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52 by these cutting lines 11-21.

  Five connecting portions 25 are intermittently formed on the cutting lines 11 to 14. Further, three connecting portions 25 are formed on the cutting lines 15, 17, 19, and 21, respectively. Further, four connecting portions 25 are formed on the cutting lines 16, 18, and 20, respectively. These connecting portions 25 are formed so as to form a pair of short cuts 26 parallel to the direction perpendicular to the cutting lines 11 to 21 and to cut the cutting lines 11 to 21 in the region between the cuts 26. Yes. Accordingly, the connecting portion 25 connects the corrugated board plates 41 to 52 in a direction in which the steps of the corrugated board 10 extend so that the corrugated boards 41 to 52 can be bent.

  An opening 30 is formed in the corrugated board 46. One side of the opening 30 coincides with the cutting line 15. Further, another opening 31 is formed in the cardboard plates 47 and 48 so as to extend over both. An opening 32 is formed in the cardboard plates 49 and 50 so as to extend over both. An opening 33 is formed in the cardboard plates 51 and 52 so as to extend over both. A receiving plate 34 is formed so as to protrude into the opening 33. The receiving plate 34 is connected to the portion of the corrugated board 52 through eight intermittent connecting portions 35.

  Next, the operation of assembling the buffer body 57 with such a corrugated board 10 will be described. As shown in FIG. 2, the corrugated cardboard 10 having a flat shape is alternately folded and valley-folded along the cutting lines 11 to 21. That is, here, the cutting lines 11, 13, 15, 17, 19, and 21 of the cardboard 10 are folded in a mountain, and the cutting lines 12, 14, 16, 18, and 20 are folded in a valley. Although these cutting lines 11 to 21 divide the corrugated board plates 41 to 52 from each other, since the plurality of connecting portions 25 are formed on these cutting lines 11 to 21 respectively, the corrugated board 10 is separated. The corrugated cardboard 10 is bent in a state where the corrugated boards 41 to 52 are connected to each other at the connecting portion 25.

  When the corrugated cardboard 10 is bent in this way, an adhesive means such as glue paste is applied in advance to the joining surfaces of the corrugated cardboard plates 41 to 52 to be joined together. In such a state, the corrugated cardboard 10 is bent as shown in FIG. 3, and the bent corrugated cardboard plates 41 to 52 are pressure-bonded to each other, so that the state shown in FIG. In other words, these corrugated board plates 41 to 52 have a substantially quadrangular prism shape in a state where they are joined to each other.

  Moreover, the recesses 55 constituting the receiving part are formed by the openings 30, 31, 32, 33 formed in advance on the cardboard 10. In the recessed portion 55, the receiving plate 34 is recessed at the intermittent connecting portion 35 so as to cover the upper end surfaces of the corrugated board 46, 47, 48, 49, 50, 51, 52 as shown in FIGS. 5 and 6. Fold in 55. At this time as well, glue glue may be applied in advance to the inner surface of the receiving plate 34 and bonded by this glue.

  By such an operation, the buffer body 57 is assembled as shown in FIGS. As shown in FIG. 6, in the buffer body 57, the lower surface of the concave portion 55 is constituted by the receiving plate 34, and the upper surface of the receiving plate 34 receives the bottom surface of the corner of the article. Here, since the cardboard plates 46 to 52 are arranged upright on the lower side of the receiving plate 34 that receives the bottom surface, the load of the corner portion of the article is received by the seven cardboard plates 46 to 52 standing upright. Become. Moreover, 46 to 51 stand upright in the direction of the corrugated cardboard, and the article is supported by using the corrugated cardboard 10 in the vertical direction. This will generate greater strength.

  Further, the portion where the connecting portion 25 is formed is as shown in FIG. 7, and the cardboards 41 to 52 are connected to each other by the connecting portion 25 at their end portions. That is, it becomes possible to use a structure in which the corrugated boards 41 to 52 are connected to each other using the connecting portion 25 formed in advance on the corrugated board 10 forming the corrugated boards 41 to 52 as they are. That is, the shock absorber 57 is assembled by alternately folding and truncating the corrugated cardboard 10 at the cutting lines 11 to 21, and the shock absorber 57 is assembled by the single corrugated cardboard 10. Assembled.

  The feature of the buffer body by such a cardboard 10 is that a buffer body 58 symmetrical to the buffer body 57 can be assembled using the cardboard 10 having the same structure as shown in FIG. That is, the shock absorber 58 as shown in FIG. 8 is assembled only by reversing the folding method of the cutting lines 11 to 21 of the cardboard 10 between the mountain fold and the valley fold.

  More specifically, when the corrugated cardboard 10 is folded, the cutting lines 12, 14, 16, 18, and 20 are folded in a mountain, and the cutting lines 11, 13, 15, 17, 19, and 21 between them are valleys. Folded and twelve cardboard plates 41 to 52 are joined together. Then, the buffer body 58 as shown in FIG. 8 is obtained by turning the buffer body 58 upside down. Such a shock absorber 58 has a shape symmetrical to that of the shock absorber shown in FIGS. 4 and 5, and is a portion of the article opposite to the receiving portion received by the shock absorber 57 shown in FIG. 4 and FIG. Will receive.

  When actually storing an article such as the precision instrument 61 in the cardboard case 62, four shock absorbers 57, 58, 59, and 60 as shown in FIGS. 9 and 10 are used. Here, the buffer body 57 has a shape as shown in FIGS. On the other hand, the buffer body 58 has a shape as shown in FIG. Further, upper buffer bodies 59 and 60 having substantially the same structure are further prepared.

  The shock absorbers 57 and 58 receive the two opposite corner portions on the lower side of the precision device 61, respectively, and the upper shock absorbers 59 and 60 receive the two opposite corner portions of the precision device 61. Try to receive. In such a state, the precision device 61 may be stored in the cardboard case 62 as shown in FIG. After that, the lid of the corrugated cardboard case 62 is closed and packed, whereby the precision instrument 61 is provided for physical distribution.

  According to such packaging, the impact from the outside is absorbed by the buffer bodies 57 to 60 made of corrugated cardboard interposed between the precision instrument 61 and the corrugated cardboard case 62, and the impact is transmitted to the precision instrument 61. This prevents the precision instrument 61 from being damaged at the physical distribution stage.

  FIG. 11 shows an outline of an apparatus for assembling the shock absorbers 57 and 58 using the corrugated cardboard 10. This apparatus includes a cylinder 71, and a pressing plate 73 is attached to a piston rod 72 of the cylinder 71. The pressing plate 73 presses the lowermost cardboard 10 among the cardboards 10 stacked in a plurality of stages by the operation of the cylinder 71.

  The cardboard 10 pressed by the cylinder 71 is inserted between the upper folding plate 77 and the lower folding plate 78. The lower folding plate 78 moves up and down by the link 79, and the upper folding plate 77 holds the corrugated cardboard 10 from above, so that the cutting lines 11 to 21 of the corrugated cardboard 10 are shown in FIG. Bent as shown.

  Thereafter, the upper and lower bent plates 77 and 78 are opened and further pressed forward by the pressing plate 73 of the cylinder 71. At this time, glue glue is respectively supplied from the glue nozzles 82 and 83 arranged above and below, and glue glue is applied to the joining surfaces of the corrugated boards 41 to 52, respectively. Then, the corrugated cardboard 10 to which the glue paste is applied is moved in front of the pressing plate 89 of the piston rod 88 of the cylinder 87.

  Thereafter, the cylinder 87 is operated, the piston rod 88 is pushed out, and the corrugated cardboard 10 bent as shown in FIG. 3 is pressed against the shutter 90 by the pressing plate 89, and is bent as shown in FIG. As shown, the cardboard plates 41 to 52 of the cardboard 10 are joined to each other.

  Thereafter, the shutter 90 is opened, and the buffer body 57 is supplied to the lower side of the presser cylinder 92. The buffer body 57 is pressed by a presser plate 94 attached to the tip of the piston rod 93 of the presser cylinder 92, and is pressed from above so as to eliminate irregularities on the upper surface, and is correctly formed. In this way, the buffer body 57 is assembled.

  As described above, the packaging buffer according to the present embodiment automatically folds the corrugated cardboard 10 that has been die-cut as shown in FIGS. 1 and 2 with an assembly machine as shown in FIG. It can be assembled fully automatically. Here, the buffer body 57 is assembled by alternately performing mountain folds and valley folds at the cutting lines 11 to 21 of the cardboard 10. Further, by reversing the relationship between the mountain fold and the valley fold along the cutting lines 11 to 21, a symmetrical buffer can be assembled. According to such a structure, it is possible to assemble the buffer body with a single cardboard 10, and it is sufficient to prepare a single punching die as the punching die, and it is sufficient to punch through the cardboard 10 only with such a punching die. .

  According to the shock absorbers 57 and 58 according to the present embodiment, as described above, the shock absorbers 57 and 58 can be assembled completely by mechanization without human intervention, thereby enabling a significant cost reduction. Incidentally, the assembly can be achieved with 1 / 10th the number of the shock absorbers having the same structure as in the prior art, and a significant labor saving can be achieved.

  Further, since the corrugated board is used in such a way that the direction of the corrugation is vertical, it is possible to exhibit higher strength than before. That is, the strength about 10 times that when the step is used sideways is exhibited. Here, the corrugated cardboard 10 is simply folded and assembled, and no other materials are used. In particular, the assembly is performed without using any metal. Become a body.

  When used for short-distance transportation or packaging of goods in short-term inventory, the cardboard case 62 as shown in FIGS. Logistics with bare packaging in the state of being applied is also possible. In addition, by assembling a plurality of shock absorbers together with sufficiently long lengths of the corrugated cardboard cutting lines 11 to 21 shown in FIG. 1, the plurality of shock absorbers are assembled at a predetermined position. Is possible. Such a buffer can also be used as the core material of the cardboard pallet.

  The present invention can be widely used for the manufacture of packaging cushions made of cardboard for protecting articles to be distributed from impact.

It is an expansion | deployment top view of the cardboard which assembles a buffer body. FIG. It is a perspective view of the state which bent the corrugated cardboard alternately at the cutting line. It is a perspective view of a buffer in a state where corrugated cardboard plates are joined together. It is a perspective view of the shock absorber in a state where the receiving plate is bent inward. It is a longitudinal cross-sectional view of the part in which the receiving part is formed. It is a longitudinal cross-sectional view of the part in which the connection part is formed. It is an assembly perspective view of a symmetrical shock absorber. It is a disassembled perspective view which shows the state of the packaging of the articles | goods by a buffer. It is a longitudinal cross-sectional view of the cardboard case of the packaged state. It is a perspective view which shows the outline of the apparatus which assembles a buffer body.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Corrugated cardboard 11-21 Cutting line 25 Connecting part 26 Cutting 30-33 Opening 34 Receptacle 35 Intermittent coupling part 41-52 Corrugated board 55 Recessed part (receiving part)
57 Buffer (bottom)
58 Buffer (bottom)
59 Buffer (top)
60 shock absorbers (top)
61 Precision equipment 62 Corrugated cardboard case 71 Cylinder 72 Piston rod 73 Press plate 77 Bending plate (upper)
78 Folded plate (bottom)
79 Link 82 Glue nozzle (top)
83 Glue nozzle (bottom)
87 Cylinder 88 Piston rod 89 Press plate 90 Shutter 92 Presser cylinder 93 Piston rod 94 Presser plate

Claims (11)

A single continuous corrugated cardboard is divided into a plurality of cardboard boards via a cutting line by die cutting, and a connecting portion is intermittently formed in the cutting line,
The single continuous cardboard is inserted between the upper folding plate and the lower folding plate, and one of the upper folding plate and the lower folding plate is close to the other. Thus, the single continuous corrugated board is alternately folded into a mountain fold and a valley fold at the cutting line, and the corrugated board is alternately folded in the opposite direction by the width of the corrugated board. A method for producing a cushioning body for packaging.   The manufacturing method of the packaging buffer according to claim 1, wherein the width of the plurality of corrugated board divided by the cutting line is the same.   2. The method of manufacturing a cushioning body for packaging according to claim 1, wherein the cutting line extends in a direction perpendicular to the direction of the corrugated cardboard.   The pair of short cuts are formed in parallel to each other in a direction orthogonal to the cutting line, and the connecting portion is formed so as to divide the cutting line in a region between the pair of cuts. The manufacturing method of the buffer for packaging as described in any one of.   The packaging according to claim 1, wherein adhesive paste is applied to the joint surfaces of the corrugated board plates before the plurality of corrugated board folded alternately in opposite directions are superposed. Method for manufacturing a shock absorber. After folding the cardboard with the upper folding plate and the lower folding plate, the upper folding plate and the lower folding plate are opened,
When the bent corrugated cardboard is pushed out in the direction of the cutting line and moved to the overlapping position, adhesive glue is supplied from the gluing nozzles arranged above and below, and the bonding surfaces of the plurality of corrugated cardboard plates are supplied. The method for producing a packaging buffer according to claim 5, wherein the adhesive paste is applied.   The method for producing a packaging cushion according to claim 5 or 6, wherein the adhesive paste is glue paste.   When the corrugated board which is bent and the adhesive paste is applied to each corrugated board is moved to the overlapping position, it is pressed by the pressing means in a direction perpendicular to the moving direction and perpendicular to the cutting line, The manufacturing method of the packaging buffer according to claim 6, wherein the plurality of cardboard plates are joined to each other.   9. The method for manufacturing a packaging shock absorber according to claim 8, wherein the folded corrugated cardboard is pressed against a closed shutter plate when pressed by the pressing means.   The corrugated board in which the plurality of corrugated boards are joined to each other is supplied to the lower side of the presser cylinder, and the end face along the cutting line of the corrugated board is pressed by the presser plate attached to the tip of the piston rod of the presser cylinder. 10. The method for manufacturing a cushioning body for packaging according to claim 9, wherein the packaging body is shaped so that the unevenness of the end face is eliminated.   The packaging buffer according to claim 10, wherein the folded corrugated cardboard is supplied to the lower side of the presser cylinder by operating the pressing means after the shutter plate is opened. Production method.

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